CN102590610A - Intelligent integral multifunctional electric energy meter and method for controlling load by same - Google Patents
Intelligent integral multifunctional electric energy meter and method for controlling load by same Download PDFInfo
- Publication number
- CN102590610A CN102590610A CN2012100451327A CN201210045132A CN102590610A CN 102590610 A CN102590610 A CN 102590610A CN 2012100451327 A CN2012100451327 A CN 2012100451327A CN 201210045132 A CN201210045132 A CN 201210045132A CN 102590610 A CN102590610 A CN 102590610A
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- microprocessor
- current
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses an intelligent integral multifunctional electric energy meter, which comprises an electric energy meter body; an input interface and a load monitoring end are arranged on the electric energy meter body; the input interface and the load monitoring end are respectively limited on two different surfaces of the electric energy meter body; a grid null line and a live wire are accessed into the input interface; a plurality of user loads are accessed into the load monitoring end; and a plurality of transmission connection configurations, a metering module, a circuit breaking module, a transmission port, a display and a control panel are arranged on the electric energy meter body between the input interface and the load monitoring end. According to the electric energy meter provided by the invention, the functions of metering and charging can be realized, and the control of user load can also be realized synchronously; as a plurality of output ports are arranged, the data transmission way is flexible, the user or maintenance staff can conveniently obtain the data information and solve the problems in time. In addition, the invention further discloses a method for controlling a load by the intelligent integral multifunctional electric energy meter.
Description
Technical field
The present invention relates to the electric energy metrical field, more particular it, the present invention relates to a kind of integral multifunctional intelligent electric energy meter, be used for that the electrical network user is carried out power consumption metering and control with load.
Background technology
On the ordinary meaning, electric energy meter is a kind of electrical measuring device that is connected between grid power transmission line and the electrical network user load.For example, three-phase electric energy meter is the electric energy that is used for measuring output of three-phase circuit electric network source or load consumption.Its principle of work is identical with single-phase electric energy meter, just structurally adopts many group driver parts and the mode that is fixed on a plurality of aluminium dishes in the rotating shaft, to realize the measurement to three-phase electric energy.It is made up of three driving elements and three aluminium dishes that are contained in the same rotating shaft, and its reading has directly reflected the electric energy that three phase network consumed.Also some three-phase electric energy meter adopts three groups of driver parts to act on the structure of same aluminium dish, and it is little, in light weight that this structure has a volume, reduced advantages such as moment of friction, helps improving sensitivity and increases the service life etc.But because the plurality of electromagnetic element acts on same disk, the mutual interference mutually of its magnetic flux and eddy current has strengthened inevitably.For this reason, must take indemnifying measure, strengthen the distance between every group of electromagnetic component as far as possible, therefore, it is big that the diameter of rotating disk is wanted accordingly.Along with continuous advancement in technology, electric energy meter changes current electronic type metering method into from original this mechanical register metering system, multiple intellectual electronic electric energy meter more occurred.
But; Current techniques is through constantly making great efforts to solve the measuring accuracy and the real-time of intelligent electric energy meter; And the defective of communication function aspect, but there is not a kind of electric energy meter rationally to monitor and effectively control to user load, promptly the functional of electric energy meter itself only is in the electrical measurement envelop of function, to update; This strictness has limited the function expansion of electric energy meter; Electrical measuring instrument if desired---be electric energy meter with load between effectively be connected, certainly will need other equipment to realize monitoring, particularly enriching constantly and electrical network constantly complicated for active user's loadtype to load; The improvement of electric energy meter can not be timely and effective, and is functional so be restricted.
On the other hand, electrical network user, especially domestic power grid user, the direct current metering in its load does not still have efficient apparatus and method.Because direct current is different from many phase alternating current, do not produce the electromagnetism alternating quantity, therefore can't utilize the induction installation of conventional electric energy meter to measure, more can't realize monitoring.Especially for big direct current, prior art often adopts shunting mode to measure, but effect is unsatisfactory, and has potential safety hazard.
Summary of the invention
The present invention is intended to solve the defective that prior art exists, and proposes a kind of intelligent integral multifunctional electric energy meter, and it can carry out power consumption metering and load control to the electrical network user.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme, a kind of intelligent integral multifunctional electric energy meter; Its technical characterictic is: it comprises an electric energy meter body; Said electric energy meter body is provided with input interface, load monitoring end, and input interface and load monitoring end are defined to respectively on two different surfaces of electric energy meter body, and electrical network zero line and live wire insert input interface; Several user loads insert said load monitoring end, also are provided with on the said electric energy meter body:
1) several transmission of being located between input interface and the load monitoring end are connected configuration;
2) metering module, it comprises sampling switching circuit, computation chip, detecting information output unit, at least one mutual inductor, microprocessor and storage unit.Wherein the auxiliary winding of mutual inductor is connected to sampling switching circuit, and computation chip and sampling switching circuit are of coupled connections and are connected to microprocessor through the detecting information output unit, and microprocessor communication link respectively is connected to display and control panel;
3) turn-off module, it comprises switch, switch control unit, control sluice and current information dispensing unit, switch control unit is connected with microprocessor communication;
4) transmit port, it is connected the data message that produces with the transmission microprocessor with microprocessor communication;
5) display, it is connected with microprocessor communication to show said data message; And
6) control panel, it is connected with microprocessor communication, in order to inputting function control information.
As preferably, the current information dispensing unit comprises current sensor, electric current comparison means and data processor, and electric network power line inserts current sensor and electric current comparison means respectively.Current sensor, electric current comparison means are connected with data processor successively, and said data processor is connected to microprocessor.
As preferably, transmit port comprises infrared communications ports, RS485 COM1, ZIGBEE COM1 and GPRS COM1.
As preferably, several transmission connect configuration and comprise that input interface is connected to input interface through the main winding of switch, mutual inductor.
As preferably, several transmission connect configuration and comprise between current information dispensing unit, first contact jaw, second contact jaw and the 3rd contact jaw and being of coupled connections.
As preferably, several transmission connect configuration and comprise between switch, switch control unit and the control sluice and being of coupled connections.
As preferably, integral multifunctional intelligent electric energy meter of the present invention comprises step to the control method of load:
1) closed control sluice is to connect electrical network and load;
2) said sampling switching circuit is gathered current signal and voltage signal through the mutual inductor and first contact jaw, and said current information dispensing unit obtains current signal through the 3rd terminals.Said mutual inductor is taken a sample to the current signal and the voltage signal of electric network power line, and the gained sample intelligence is transferred to sampling switching circuit and computation chip subsequently.The current information dispensing unit obtains current signal through the 3rd terminals simultaneously;
3) said sampling switching circuit carries out analog to digital conversion and is transferred to computation chip carrying out data processing to current signal and the voltage signal that collects; The detecting information output unit is stored and transmitted it to computation chip to the data message that draws; To take a sample gained electric current and voltage analog of sampling switching circuit converts amount of digital information into, is transferred to computation chip then and carries out continuous data and calculate and handle.Said computation chip calculates energy value and phase angle to the gained amount of digital information.The detecting information output unit is stored and transmitted it to said computation chip to the data message that draws, and said detecting information output unit extracts the current acquisition information in the data message and transmits it to microprocessor;
4) said current information dispensing unit is current arrangements information with the current signal conversion process that is obtained and transfers to microprocessor;
5) said microprocessor is measured output impedance value and power attenuation value according to current arrangements information and current acquisition information;
6) said microprocessor compares output impedance value and a preset impedance threshold; If said output impedance value exceeds preset impedance threshold; Then said microprocessor breaks off turn-off module through switch control unit; If said output impedance value does not exceed preset impedance threshold, then said microprocessor judges further whether the power attenuation value exceeds a preset power threshold;
7) if said power attenuation value exceeds preset power threshold, then said microprocessor is judged loadtype and is warned.This brings in realization through microprocessor and load monitoring.Said monitoring side comprises a plurality of load cells and tap switch, and these load cells can judge that which bar circuit exists overload to connect or improper connection information according to said output impedance value.Said tap switch breaks off so that line load is cut off the electricity supply; Sensor is given microprocessor with information feedback simultaneously; Then said microprocessor is transferred to far-end main website server with this information recording storage in a storage unit that self is coupled and through transmission ends, on said display, show these information warnings simultaneously.If said power attenuation value does not exceed preset power threshold, then said micro processor controls metering module carries out electric energy metrical.
As preferably, in step 5), said output impedance value is according to formula Δ R=U/ (I
C-I
S) draw, wherein U is the line voltage variable that metering module draws, I
CBe current arrangements information, I
SBe current acquisition information.
As preferably, in step 5), said power attenuation value is according to formula ∑ Δ P=U
XI
C-U
XI
SDraw.U wherein
XBe the line voltage variable that metering module draws, I
CBe current arrangements information, I
SBe current acquisition information.
In a preferred embodiment of the invention, in step 6), when output impedance value during greater than preset impedance threshold, said display will demonstrate the visual information of reflection second state.
Further say it, in a preferred embodiment of the invention, in step 6); When the output impedance value is not more than preset impedance threshold; Said display will demonstrate the visual information of a reflection third state, and will be of previous embodiment, and turn-off module does not break off fully.
Further say it, in a preferred embodiment of the invention, in step 7), when the power attenuation value is not more than preset power threshold, said display will demonstrate the visual information of reflection first state.
The invention has the beneficial effects as follows conspicuous:
1, propose a kind of electric power meter of novel structure, this device can be realized the control to user load when realizing the metering and billing function;
2, have a plurality of output ports, data transfer mode is flexible;
3, through record and prompting, can make user or maintainer conveniently obtain these data messages to electrical network user power utilization state, and the timely queueing problem of ability;
4, safe in utilization, reduce application risk through Based Intelligent Control to switch.
Description of drawings
Below will come detailed description the preferred embodiments of the present invention and embodiment with reference to accompanying drawing, and describe for ease, and only show necessary module of main composition or device, the same or similar mark among the figure is represented equal modules or assembly, wherein:
Fig. 1 is the structural representation of integral multifunctional single-phase electric energy meter of the present invention;
Fig. 2 forms synoptic diagram for the principle of integral multifunctional single-phase electric energy meter of the present invention;
Fig. 3 is the theory structure synoptic diagram that is connected configuration as the input interface of the preferred embodiment of the present invention with a transmission between the load monitoring end;
Fig. 4 is the composition synoptic diagram as the current information dispensing unit main functional modules of the preferred embodiment of the present invention;
Fig. 5 is the circuit theory diagrams of electric current comparison means of the current information dispensing unit of the further shows in detail preferred embodiment of the present invention.
Embodiment
With reference to Fig. 1; Wherein shown perspective view based on a kind of single-phase electric energy meter body 100 of technical scheme of the present invention; Can embody the partial interior limiting structure of electric energy meter among the figure; In order to express easily, only embody the limiting structure of input interface 80, load monitoring end 90 and the turn-off module 10 of electric energy meter body 100.In Fig. 1, further embody a control sluice 12 of turn-off module 10.The structure of electric energy meter body 100, composition or shape can be diversified, and for example cylindrical or rectangle, electric energy meter body 100 are used to protect the electric energy meter intraware to avoid external interference, thus make electric energy meter can be out of doors, use under the condition such as industry spot.
As can be seen from Figure 1; First preferred embodiment as single-phase electric energy meter body 100 of the present invention; Input interface 80 is set in the bottom of phase turn-off module 10, i.e. electric energy meter body 100 lower surfaces, and load monitoring end 90 is set in the upper surface of electric energy meter body 100.The inlet wire N of electrical network zero line N and live wire L
In, L
InWith outlet N
Out, L
OutBe electrically connected through input interface 80, and leading-out terminal connects different user loads through load monitoring end 90.
Certainly; As second preferred embodiment, further with reference to Fig. 1, electric energy meter body 100 of the present invention also can be a kind of three-phase electric energy meter; Can the input interface 80 of electric energy meter body 100 all be set at the end of incoming cables, and load monitoring end 90 all is set at leading-out terminal to connect user load.Said first preferred embodiment only is a convenient metering purpose under general situation, and second preferred embodiment then can be used for three-phase three-wire electric energy meter or three-phase and four-line electric energy meter.Should be appreciated that, be same being suitable for if input interface 80 and load monitoring end 90 are defined in respectively on left surface and the right flank.As preferably, consider internal wiring setting and space practicality intention, preferably input interface 80 and load monitoring end 90 are set on two different surfaces of body 100.
Further; Control sluice 12 can be the big electric current switch of operating a switch; Be used for when the user load overload, cutting off electric network power line; Said cut-out mode will be with in addition detailed description of the preferred embodiment of the present invention, and the mechanical engagement mode between the switch 10a that set in it and the turn-off module 10,10b, the 10c can be switch configuration general in the prior art, will not give unnecessary details among this paper.
Existing with reference to Fig. 2, integral multifunctional three-phase electric energy meter body 100 of the present invention further defines following technical characterictic:
1) transmission of several between input interface 80 and the load monitoring end 90 is connected configuration;
2) metering module 20, and it comprises sampling switching circuit 21, computation chip 22, detecting information output unit 23, mutual inductor 27a, 27b, 27c, microprocessor 30 and storage unit 40.Wherein the auxiliary winding of mutual inductor 27a, 27b, 27c is connected to sampling switching circuit 21; Computation chip 22 is of coupled connections with sampling switching circuit 21 and is connected to microprocessor 30 through detecting information output unit 23, and microprocessor 30 communication link respectively is connected to display 50 and control panel 70;
3) turn-off module 10, and it comprises switch 10a, 10b, 10c, switch control unit 11 and current information dispensing unit 24.Wherein switch control unit 11 is connected with microprocessor 30 communications;
4) transmit port 60, and it is connected the data message that produces with transmission microprocessor 30 with microprocessor 30 communications;
5) display 50, and it is connected to show these data messages with microprocessor 30 communications; And
6) control panel 70, and it is connected with microprocessor 30 communications, in order to inputting function control information.
As preferably, transmit port 60 comprises the combination of at least one or they in infrared communications ports, RS485 COM1, ZIGBEE COM1 and the GPRS COM1.
As preferably, technical characterictic 1) several transmission connect configuration and comprise that input interface 80 is connected to input interface 80 through the main winding of switch 10a, 10b, 10c, mutual inductor 27a, 27b, 27c.Be three-phase power line IN
a, IN
bAnd IN
cInsert input interface 80 and also directly pick out from load monitoring end 90, this embodiment is saved the internal structure and the wiring of electric energy meter body 100 the most, can be used as first-selection.Certainly, it is suitable equally to limit other embodiment of technical scheme based on the present invention.
In a preferred embodiment of the invention, technical characterictic 1) several transmission connect configuration and comprise between current information dispensing unit 24, the first contact jaw 25a, 25b, 25c and the second contact jaw 26a, 26b, the 26c and being of coupled connections.Fig. 3 has shown the cut-open view that this transmission connects a preferred embodiment of configuration.As shown in the figure, be example with a line of electric force, this transmission connects configuration and mainly is made up of the first contact jaw 25a, the second contact jaw 26a and the 3rd contact jaw 28a.Wherein, the first contact jaw 25a is connected to turn-off module 10, the three contact jaw 28a and is connected to current information dispensing unit 24, the first contact jaw 25a and the 3rd contact jaw 28a and connects, and extends among the second contact jaw 26a.In order to reach effective electrical isolation, preferred between embeds an electrical isolation layer 29.According to the preferred embodiment of the present invention, the second contact jaw 26a connects electric network power line IN
a, the first contact jaw 25a is attached thereto, to be connected to metering module 20 through turn-off module 10, in order to obtain current acquisition information I
S, and the 3rd contact jaw 28a is connected with the second contact jaw 26a, with so that current information dispensing unit 24 collects current arrangements information I
C
When control sluice 12 closures, the current acquisition information I that metering module 20 draws
SThe current arrangements information I that draws with current information dispensing unit 24
CBe used to produce an impedance Δ R value, its coincidence formula (1):
ΔR＝U/(I
C-I
S)(1)
Wherein U is a metering module 20, especially the voltmeter value of the electrical network circuit that draws of DSP 22.Subsequently, microprocessor 30 is with this resistance value R and a predetermined threshold value R
THEDCompare.If gained R value is greater than this threshold value R
THED, then microprocessor 30 is discerned this as an incident.
The power attenuation of turn-off module 10 following formula capable of using calculates:
∑ΔP＝U
X·I
C-U
X·I
S(2)
X={A wherein, B, C, A, B ..}
The Δ P value that draws will with a predetermined threshold value P
THEDCompare, whether there is power attenuation in loaded line to draw.
Existing with reference to Fig. 4; Current information dispensing unit 24 comprises current sensor (CT) 241, electric current comparison means 242 and data processor 243 (being preferably a DSP); Electric network power line inserts current sensor 241 and electric current comparison means 242 respectively; Said current sensor 241, electric current comparison means 242 are connected with data processor 243 successively, and said data processor 243 is connected to microprocessor 30.As shown in the figure, be example with the single-phase electric energy meter, power network current I
ADifference inflow current sensor 241 and electric current comparison means 242, the electric current I that electric current comparison means 242 obtains CT 241
ACompare with the electric current I that flows directly into, and export a digital signal level V
OUTGive DSP 243.Shown the preferred embodiment of electric current comparison means 242 of the present invention among Fig. 5; As shown in the figure; This electric current comparison means 242 is designed to a current comparison circuit; Illustrate for easy, only show main circuit and omit other circuit, wherein metal-oxide-semiconductor M1, M2, M3, M4 and an operational amplifier A 1 are formed current comparator.
From figure, learn current signal I
AConvert a voltage signal V into through M1 and M2
A, current signal I converts a voltage signal V into through M3 and M4, then the V of 1 pair of prime electric current of operational amplifier A input stage circuit
ACompare V with V signal
AWith V signal can be mutually signal as a reference.This prime electric current input stage circuit is designed to a current mirroring circuit, refers again to Fig. 3, and wherein electric current is I
ABe to obtain through the 3rd contact jaw 28a; The effect of CT 241 is to obtain a scheduled current effective value I; And need this I value and former IA value be drawn a level signal after relatively, so that DSP 243 determines whether exporting a current arrangements signal I according to this signal
C
Once more with reference to Fig. 5, when operational amplifier A 1 draws signal V
OUTAfter, connect a latch A2 subsequently, and import a clock signal clk latching, and export to DSP 243 with synchronously.DSP 243 is according to this signal V
OUTCarry out the judgement and the data processing of power network current state, for example V
OUTOutput I during for high level
CSignal, during low level then DSP 243 report an error to microprocessor 30, then microprocessor 30 can these error messages of record and the condition prompting of on display 50, for example pointing out out " connection error ", connect to carry out again circuit.
Refer again to Fig. 5, if I
A=I, under the situation that then circuit is connected, the metal-oxide-semiconductor of prime electric current input stage will be in state of saturation during operate as normal, and the M2 of reseting stage and M4 inflow current are equal, i.e. V
A=V.The V that then exports
OUTBe reset signal.If I
A＞I, the then V of output
OUTBe high level, if I
A＜I, the then V of output
OUTBe low level.Promptly only at I
A＞I, V
OUTDuring for high level, that current signal configuration circuit 24 is exported is correct I
CSignal.
Among the DSP 243 corresponding to V
OUTSignal provides a corresponding voltage value V
C, then
I
C＝V
C/R
C(3)
R wherein
C=(R
A+ R)/[1+ (G
M1+ G
M2) R
A+ (G
M3+ G
M4) R] (4)
R in the formula (4)
ABe respectively the equivalent resistance at prime electric current input stage two ends, G with R
M1, G
M2, G
M3And G
M4Be respectively the mutual conductance of metal-oxide-semiconductor, under the normal situation of circuit, should satisfy R
A=R ≈ 1/ (G
M1+ G
M2) ≈ 1/ (G
M3+ G
M4) (5)
As preferably, technical characterictic 1) several transmission connect configuration and comprise being of coupled connections between switch 10a, 10b, 10c, switch control unit 11 and the control sluice 12.
Turn-off module 10 has at least a state, and in a preferred embodiment of the invention, it has first state, second state and the third state.These three kinds of states are that the signal controlling through 30 pairs of switch control units 11 of microprocessor decides, and promptly switch control unit 11 carries out break-make control according to the state logic signal that microprocessor 30 provides to switch 10a, 10b, 10c.
More particular it, under first state, switch 10a, 10b, 10c are closed, thus the connecting subscribers participating load is to provide electric power.And under second state, switch 10a, 10b, 10c break off, thereby stop to load electric power being provided.The third state is a kind of comparatively special state, and it is between said first state and second state, and promptly switch is in " protection " state.For example; When big or electric energy loss is big in the pressure drop of user load circuit, for some load, direct deenergization; Like this maybe be to some load, especially for example have the electrical equipment of data accumulating function; Need electric power surge time, under this situation, still need guarantee normal power-up within a certain period of time.Again for example, when the load overload, in the time of when outage, illumination or indication information electricity consumption need being provided, directly therefore cut-off switch 10a, 10b, 10c need an intermediateness to support.Switch control unit 11 comprises several electronic directors, and these several indicators can comprise a plurality of gate circuits, and the control signal of microprocessor 30 is changed the break-make with CS 10a, 10b, 10c.For example, unit 11 is discerned " first state ", " second state " and " third state " signal, thereby carries out corresponding actions.
Display 50 can be a LCD, and it is connected and provides for the user visualization display of a kind of metrical information and status information with microprocessor 30 communication.For example, in a preferred embodiment of the invention, 50 couples of electrical network users' of display electricity consumption metrical information is carried out visualization display.Under the situation of a three-phase intelligent electric energy meter operate as normal; Refer again to Fig. 2 and Fig. 3; Switch 10a, 10b, 10c closure; Then the first contact jaw 25a, 25b, 25c are connected directly to mutual inductor 27a, 27b, 27c main winding, and mutual inductor 27a, 27b, 27c take a sample to current signal in the electric network power line and voltage signal, and information is transferred to the sampling switching circuit 21 and computation chip 22 that intercouples subsequently; Sampling switching circuit 21 can comprise a plurality of A/D conversion chips, and will take a sample gained electric current and voltage analog convert amount of digital information I into
XAnd U
X, be transferred to computation chip 22 then and carry out data computing and processing.Computation chip 22 can be a digital signal processor (DSP), chip such as ADE7755 for example, and it is to amount of digital information I
XAnd U
XCalculate to draw energy value and reach for example three-phase current and three-phase voltage phase angle
Value (is example with the three-phase and four-line electric energy meter):
P＝U
A·I
A+U
B·I
B+U
C·I
C(6)
Subsequently, DSP 22 gives microprocessor 30 with this information transmission.The P value that 30 pairs of formula of microprocessor (6) draw is handled; And draw for example parameters such as active power, applied power, gain coefficient according to three-phase current voltage phase angle
; For some intelligent heterogeneous electric energy meter; Can also realize data such as time-sharing measurement charging, rate control according to the instrument preset function; To be transferred to terminal main website server through transmission ends 60, show to display 50 these data transmission simultaneously.Should be noted in the discussion above that when the electric energy meter operate as normal test signal output unit 23 keeps connecting, but does not realize its function, only could be to amount of digital information I when needs are controlled user load
XExtract.
Simultaneously, microprocessor 30 is transferred to display 50 with three kinds of circuit states and shows.For example, first state is shown as " normally ", and second state is shown as " power failure ", and the third state is shown as " load protection ",
The intelligent integral multifunctional electric energy meter of the preferred embodiment of the present invention comprises step to the control method of load:
1) closed control sluice 12 is to connect electrical network and load.
Under the general situation, the electrical network user can connect the loop through manually opened control sluice 12.For example upwards promote control sluice 12 and be controllable switch 10a, 10b, 10c and connect circuit, to realize power supply user load.Should be appreciated that; This only is a kind of technological means of the embodiment of the invention, as preferably, can omit control sluice 12 or be set in body 100 inside; Because need consider some problems that possibly occur; For example whether the material of control sluice 12 elements itself is formed and to be easy to promote, and for example under the lower situation of pressure drop of grid, whether can occur control sluice again can't normally closed, the situation that promptly can't engage.Therefore this control sluice 12 embodiment are higher to those skilled in the art's enforcement job requirements, and the drawing lock element material that promptly needs need meet the requirements, but this embodiment can be used as a kind of technical method of novelty.
2) sampling switching circuit 21 is gathered current signal and voltage signal through mutual inductor 27a, 27b, 27c and the first contact jaw 25a, 25b, 25c; As shown in Figure 2; Mutual inductor 27a, 27b, 27c take a sample to the current signal and the voltage signal of electric network power line, and sample intelligence is transferred to the sampling switching circuit 21 and computation chip 22 that intercouples subsequently.Simultaneously current information dispensing unit 24 obtains current signal through the 3rd terminals 28a, 28b, 28c.
3) 21 pairs of current signals that collect of sampling switching circuit and voltage signal carry out analog to digital conversion and are transferred to computation chip 22 carrying out data processing; Detecting information output unit 23 is stored and transmitted it to 22 pairs of data messages that draw of DSP; As shown in Figure 2; Sampling switching circuit 21 can comprise a plurality of A/D conversion chips, and will take a sample gained electric current and voltage analog convert amount of digital information I into
XAnd U
X, be transferred to DSP 22 then and carry out continuous data calculating and processing.22 couples of amount of digital information I of DSP
XAnd U
XCalculate energy value P=∑ U
XI
XX=A, and B, C ... and phase angle
Value.The current acquisition information I that detecting information output unit 23 extracts in the data message
SAnd transmit it to microprocessor 30.
4) current information dispensing unit 24 is current arrangements information I with the current signal conversion process that is obtained
CAnd transfer to microprocessor 30.
5) microprocessor 30 is according to current arrangements information I
CWith current acquisition information I
SCome according to formula Δ R=U/ (I
C-I
S) draw output impedance value Δ R, and according to ∑ Δ P=U
XI
C-U
XI
SDraw power attenuation value Δ P.
6) said microprocessor 30 is with output impedance value Δ R and a preset impedance threshold R
THEDCompare, if output impedance value Δ R is greater than preset impedance threshold R
THED, then microprocessor 30 breaks off turn-off module 10 through switch control unit 11, if output impedance value Δ R is not more than preset impedance threshold R
THED, then microprocessor 30 judges further whether power attenuation value Δ P exceeds a preset power threshold P
THED
7) if power attenuation value Δ P exceeds preset power threshold P
THED, then microprocessor 30 is judged loadtypes, and data message is shown through display 50, i.e. explicit user electrical equipment item name and warning.This mainly realizes through microprocessor 30 and load monitoring end 90; Monitoring side 90 comprises a plurality of load cells and tap switch (not illustrating among Fig. 2); These load cells can judge that which bar circuit exists for example " overload connection " or information such as " improper connections " according to the described output impedance value of preamble Δ R; Tap switch breaks off so that line load is cut off the electricity supply; Sensor is given microprocessor 30 with information feedback simultaneously, and then microprocessor 30 in a storage unit that self is coupled, is transferred to far-end main website server in (for example FLASH or EEPROM) and through transmission ends 60 with this information recording storage; On display 50, show simultaneously these information warnings, for example " air-conditioning---overload connects " etc.The user will carry out handled when learning these information warnings.If said power attenuation value Δ P does not exceed preset power threshold P
THED, then microprocessor 30 control metering modules 20 carry out electric energy metrical.
Further say it, according to the preferred embodiment of the present invention, in step 6), when output impedance value Δ R greater than preset impedance threshold R
THEDThe time, display 50 will demonstrate the visual information " power failure " of reflection second state.
Further say it, according to the preferred embodiment of the present invention, in step 6), when output impedance value Δ R is not more than preset impedance threshold R
THEDThe time, display 50 will demonstrate the visual information " load protection " of a reflection third state, and like previous embodiment, be the separated time off state this moment, so turn-off module does not break off fully.
Further say it, according to the preferred embodiment of the present invention, in step 7), when power attenuation value Δ P is not more than preset power threshold P
THEDThe time, display 50 will demonstrate the visual information " normally " of reflection first state.
In addition, according to a preferred embodiment of the invention, control panel 70 is preferably a Keyboard Control plate or Trackpad, and can carry out historical improper electricity consumption recorded information through control panel 70 and browse, or the switch that when user load is cut off power supply, closes a floodgate again.Simultaneously, for the multifunctional intellectual electric energy meter, can obtain for example many rates, electricity consumption metrical information at times through control panel 70.
More than being merely the preferred embodiments of the present invention, is not to be the restriction to technical scheme of the present invention.Numeral-classifier compound such as " " in the previous embodiment, " a kind of " are not to be functional module or element to be defined as single, and it is merely a kind of globality and describes.And aforementioned preferred method is not to be defined as said step.Should be appreciated that all modifications of having done based on the present invention, variation or substitute, all should be covered by in the technological category that the present invention advocates.
Claims (9)
1. intelligent integral multifunctional electric energy meter; Be used for the electrical network user is carried out power consumption metering and load control; It is characterized in that: it comprises an electric energy meter body (100); Said electric energy meter body (100) is provided with input interface (80), load monitoring end (90), and said input interface (80) and load monitoring end (90) are defined to respectively on two different surfaces of electric energy meter body (100), and electrical network zero line and live wire insert input interface (80); Several user loads insert said load monitoring end (90), also are provided with on the said electric energy meter body (100):
Several transmission of being located between input interface (80) and the load monitoring end (90) are connected configuration;
Metering module (20); It comprises sampling switching circuit (21), computation chip (22), detecting information output unit (23), mutual inductor (27a; 27b, 27c), microprocessor (30) and storage unit (40), said mutual inductor (27a; 27b; 27c) auxiliary winding is connected to sampling switching circuit (21), and said computation chip (22) is of coupled connections with sampling switching circuit (21) and is connected to microprocessor (30) through detecting information output unit (23), and said microprocessor (30) communication link respectively is connected to display (50) and control panel (70); Turn-off module (10), it comprises that (10c), switch control unit (11), control sluice (12) and current information dispensing unit (24), said switch control unit (11) is connected with microprocessor (30) communication switch for 10a, 10b;
Transmit port (60), it is connected the data message that produces with transmission microprocessor (30) with microprocessor (30) communication;
Display (50), it is connected to show said data message with microprocessor (30) communication; And control panel (70), it is connected with microprocessor (30) communication, in order to inputting function control information.
2. intelligent integral multifunctional electric energy meter as claimed in claim 1 is characterized in that: said transmit port (60) comprises infrared communications ports, RS485 COM1, ZIGBEE COM1 and GPRS COM1.
3. intelligent integral multifunctional electric energy meter as claimed in claim 1; It is characterized in that: said current information dispensing unit (24) comprises current sensor (241), electric current comparison means (242) and data processor (243); Electric network power line inserts current sensor (241) and electric current comparison means (242) respectively; Said current sensor (241), electric current comparison means (242) are connected with data processor (243) successively, and said data processor (243) is connected to microprocessor (30).
4. intelligent integral multifunctional electric energy meter as claimed in claim 1; It is characterized in that: said several transmission connect configuration comprise input interface (80) through switch (10a, 10b, 10c), mutual inductor (27a; 27b, 27c) main winding is connected to input interface (80).
5. intelligent integral multifunctional electric energy meter as claimed in claim 1; It is characterized in that: said several transmission connect configuration comprise current information dispensing unit (24), first contact jaw (25a, 25b, 25c), the second contact jaw (26a; 26b; 26c) (28a, 28b are of coupled connections between 28c) with the 3rd contact jaw.
6. intelligent integral multifunctional electric energy meter as claimed in claim 1 is characterized in that: said several transmission connect configuration comprise switch (10a, 10b, 10c), be of coupled connections between switch control unit (11) and the control sluice (12).
7. intelligent integral multifunctional electric energy meter as claimed in claim 1 is characterized in that the control method of load is comprised step:
1) closed control sluice (12) is to connect electrical network and load;
2) said sampling switching circuit (21) through mutual inductor (27a, 27b, 27c) and first contact jaw (25a, 25b 25c) gather current signal and voltage signal, and (28a, 28b 28c) obtain current signal to said current information dispensing unit (24) through the 3rd terminals;
3) said sampling switching circuit (21) carries out analog to digital conversion and is transferred to computation chip (22) carrying out data processing to current signal and the voltage signal that collects; Detecting information output unit (23) is stored and transmitted it to said computation chip (22) to the data message that draws, and said detecting information output unit (23) extracts the current acquisition information in the data message and transmits it to microprocessor (30);
4) said current information dispensing unit (24) is current arrangements information with the current signal conversion process that is obtained and transfers to microprocessor (30);
5) said microprocessor (30) is measured output impedance value and power attenuation value according to current arrangements information and current acquisition information;
6) said microprocessor (30) compares output impedance value and a preset impedance threshold; If said output impedance value exceeds preset impedance threshold; Then said microprocessor (30) breaks off turn-off module (10) through switch control unit (11); If said output impedance value does not exceed preset impedance threshold, then said microprocessor (30) judges further whether the power attenuation value exceeds a preset power threshold;
7) if said power attenuation value exceeds preset power threshold, then said microprocessor (30) is judged loadtype, if said power attenuation value does not exceed preset power threshold, then said microprocessor (30) control metering module (20) carries out electric energy metrical.
8. intelligent integral multifunctional electric energy meter as claimed in claim 7 is characterized in that: in step 5), said output impedance value is according to formula Δ R=U/ (I
C-I
S) draw.
9. intelligent integral multifunctional electric energy meter as claimed in claim 7 is characterized in that: in step 5), said power attenuation value is according to formula ∑ Δ P=U
XI
C-U
XI
SDraw.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235483.3A CN104049141B (en) | 2012-02-27 | 2012-02-27 | The Intelligent integrated formula multifunctional electric energy meter control method to load |
| CN201210045132.7A CN102590610B (en) | 2012-02-27 | 2012-02-27 | Intelligent integral multifunctional electric energy meter and method for controlling load by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210045132.7A CN102590610B (en) | 2012-02-27 | 2012-02-27 | Intelligent integral multifunctional electric energy meter and method for controlling load by same |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410235483.3A Division CN104049141B (en) | 2012-02-27 | 2012-02-27 | The Intelligent integrated formula multifunctional electric energy meter control method to load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102590610A true CN102590610A (en) | 2012-07-18 |
| CN102590610B CN102590610B (en) | 2014-11-19 |
Family
ID=46479533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210045132.7A Active CN102590610B (en) | 2012-02-27 | 2012-02-27 | Intelligent integral multifunctional electric energy meter and method for controlling load by same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102590610B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226330A (en) * | 2013-03-27 | 2013-07-31 | 杭州绿庭照明管理有限公司 | Outdoor load switch controller |
| CN103728491A (en) * | 2012-10-16 | 2014-04-16 | 苏州工业园区新宏博通讯科技有限公司 | Alternative-current electric energy meter |
| CN103777100A (en) * | 2014-01-28 | 2014-05-07 | 刘兵 | Device and method for acquiring electricity utilization information |
| CN103792423A (en) * | 2012-10-30 | 2014-05-14 | 苏州工业园区新宏博通讯科技有限公司 | DC electric energy meter with switch control function |
| CN105334387A (en) * | 2015-12-09 | 2016-02-17 | 浙江中安海洋电力科技有限公司 | Intelligent electricity meter with self-adaptive protection function and load detection method |
| CN111954822A (en) * | 2018-04-11 | 2020-11-17 | 通快机床两合公司 | Intermediate module, receiver module, monitoring system and monitoring method |
| CN115420942A (en) * | 2022-11-04 | 2022-12-02 | 浙江正泰物联技术有限公司 | Electric energy measuring device and power supply system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4365302A (en) * | 1981-01-14 | 1982-12-21 | Westinghouse Electric Corp. | High accuracy AC electric energy metering system |
| CN201360133Y (en) * | 2009-02-17 | 2009-12-09 | 台州职业技术学院 | Intelligent electric-limiting energy meter |
| CN202522623U (en) * | 2012-02-27 | 2012-11-07 | 华立仪表集团股份有限公司 | Intelligent one-piece multifunctional electric energy meter |
-
2012
- 2012-02-27 CN CN201210045132.7A patent/CN102590610B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4365302A (en) * | 1981-01-14 | 1982-12-21 | Westinghouse Electric Corp. | High accuracy AC electric energy metering system |
| CN201360133Y (en) * | 2009-02-17 | 2009-12-09 | 台州职业技术学院 | Intelligent electric-limiting energy meter |
| CN202522623U (en) * | 2012-02-27 | 2012-11-07 | 华立仪表集团股份有限公司 | Intelligent one-piece multifunctional electric energy meter |
Non-Patent Citations (2)
| Title |
|---|
| 《仪表技术》 20021231 本刊编辑部 电子电能表与电能测量技术讲座 第四讲 以ADE7752设计的电子电能表 , 第06期 * |
| 本刊编辑部: "电子电能表与电能测量技术讲座 第四讲 以ADE7752设计的电子电能表", 《仪表技术》, no. 06, 31 December 2002 (2002-12-31) * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728491A (en) * | 2012-10-16 | 2014-04-16 | 苏州工业园区新宏博通讯科技有限公司 | Alternative-current electric energy meter |
| CN103792423A (en) * | 2012-10-30 | 2014-05-14 | 苏州工业园区新宏博通讯科技有限公司 | DC electric energy meter with switch control function |
| CN103226330A (en) * | 2013-03-27 | 2013-07-31 | 杭州绿庭照明管理有限公司 | Outdoor load switch controller |
| CN103777100A (en) * | 2014-01-28 | 2014-05-07 | 刘兵 | Device and method for acquiring electricity utilization information |
| WO2015113522A1 (en) * | 2014-01-28 | 2015-08-06 | 刘兵 | Apparatus and method for obtaining power usage information |
| US9961417B2 (en) | 2014-01-28 | 2018-05-01 | Bing Liu | Device and method for acquiring electricity utilization information |
| CN105334387A (en) * | 2015-12-09 | 2016-02-17 | 浙江中安海洋电力科技有限公司 | Intelligent electricity meter with self-adaptive protection function and load detection method |
| CN111954822A (en) * | 2018-04-11 | 2020-11-17 | 通快机床两合公司 | Intermediate module, receiver module, monitoring system and monitoring method |
| CN115420942A (en) * | 2022-11-04 | 2022-12-02 | 浙江正泰物联技术有限公司 | Electric energy measuring device and power supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102590610B (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102590610A (en) | Intelligent integral multifunctional electric energy meter and method for controlling load by same | |
| CN201234165Y (en) | Automatic control apparatus for power distribution system | |
| CN101030711B (en) | Microcomputer protecting controller | |
| KR101220773B1 (en) | Intelligent Cabinet-Panel Having Energy Managing Function in the Smart Grid Environment | |
| CN102323461A (en) | Unit multi-user intelligent electric energy meter box | |
| CN207114670U (en) | A kind of distribution line energy monitor sensor | |
| CN202522623U (en) | Intelligent one-piece multifunctional electric energy meter | |
| CN205829295U (en) | Integral intelligent electric energy meter and electric-power metering and Control protection system | |
| CN202351676U (en) | Energy consumption metering and production safety monitoring system | |
| CN207424143U (en) | A kind of relay-protection pressing plate monitoring device | |
| CN104049141A (en) | Load controlling method of intelligent and integral multifunction watt-hour meter | |
| CN105334387A (en) | Intelligent electricity meter with self-adaptive protection function and load detection method | |
| CN112834799A (en) | Intelligent Hall current sensor chip based on Internet | |
| CN207650261U (en) | A kind of new distribution network data acquisition terminal | |
| CN103337905A (en) | Digitalized protection and measuring/control device integrated with metering function | |
| CN106655732A (en) | Programmable controller-controlled test object control power supply | |
| CN201364814Y (en) | Passive high-voltage wireless current transformer | |
| CN203645406U (en) | Intelligent distribution monitoring cabinet | |
| CN207181565U (en) | Electric power terminal detector | |
| CN102624091B (en) | Alternating current distribution multi-loop monitoring system | |
| CN202631627U (en) | Strong electromagnetic field resistant intelligent ammeter | |
| CN205193156U (en) | Smart electric meter with self -adaptation protection | |
| CN104682554A (en) | Intelligent power distribution monitoring cabinet | |
| CN107611793A (en) | A kind of Intelligent lower voltage switch cabinet | |
| CN202770874U (en) | High-voltage dry-type composite transformation ratio automatic conversion metering box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID SHANDONG HAIYANG ELECTRIC POWER COMPANY Effective date: 20140417 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Song Xiqiang Inventor after: Guo Junfeng Inventor after: Jiang Dachuan Inventor after: Wang Zhichao Inventor after: Zeng Shitu Inventor after: Yu Feng Inventor after: Wang Hongjian Inventor after: Xu Hehuan Inventor after: Li Zhi Inventor before: Song Xiqiang Inventor before: Yu Feng Inventor before: Wang Hongjian Inventor before: Xu Hehuan Inventor before: Li Zhi |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SONG XIQIANG YU FENG WANG HONGJIAN XU HEHAI LI ZHI TO: SONG XIQIANG GUO JUNFENG JIANG DACHUAN WANG ZHICHAO CENG SHITU YU FENG WANG HONGJIAN XU HEHAI LI ZHI |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20140417 Address after: HOLLEY Technology Park No. 181 310012 Hangzhou city Zhejiang District of Yuhang province Wuchang Avenue Applicant after: Holley Metering Ltd. Applicant after: State Grid Shandong Haiyang Electric Power Company Address before: HOLLEY Technology Park No. 181 310012 Hangzhou city Zhejiang District of Yuhang province Wuchang Avenue Applicant before: Holley Metering Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: HOLLEY Technology Park No. 181 310012 Hangzhou city Zhejiang District of Yuhang province Wuchang Avenue Patentee after: HOLLEY METERING LIMITED Patentee after: State Grid Shandong Haiyang Electric Power Company Address before: HOLLEY Technology Park No. 181 310012 Hangzhou city Zhejiang District of Yuhang province Wuchang Avenue Patentee before: Holley Metering Ltd. Patentee before: State Grid Shandong Haiyang Electric Power Company |