CN102590610B - 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
- CN102590610B CN102590610B CN201210045132.7A CN201210045132A CN102590610B CN 102590610 B CN102590610 B CN 102590610B CN 201210045132 A CN201210045132 A CN 201210045132A CN 102590610 B CN102590610 B CN 102590610B
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- microprocessor
- current
- load
- 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.)
- Active
Links
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
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 electric energy metrical field, in more specific words it, the present invention relates to a kind of integral multifunctional intelligent electric energy meter, for electrical network user being carried out to power consumption metering and load control.
Background technology
On ordinary meaning, electric energy meter is a kind of electrical measuring device being connected between power grid transmission line and electrical network user load.For example, three-phase electric energy meter is the electric energy for measuring the 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 the multiple aluminium dishes in 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 same rotating shaft, and its reading has directly reflected the electric energy that three phase network consumes.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 that this structure has volume, lightweight, reduced the advantages such as moment of friction, is conducive to improve sensitivity and increases the service life etc.But because plurality of electromagnetic element acts on same disk, the phase mutual interference of its magnetic flux and eddy current has inevitably strengthened.For this reason, must take indemnifying measure, strengthen as far as possible the distance between every group of electromagnetic component, therefore, the diameter of rotating disk is larger accordingly.Along with the continuous progress of technology, electric energy meter changes current electronic type metering method into from original this mechanical register metering system, has more occurred multiple intellectual electronic electric energy meter.
But, current techniques is by constantly making great efforts to solve measuring accuracy and the real-time of intelligent electric energy meter, and the defect of communication function aspect, but do not have a kind of electric energy meter can user load rationally be monitored and effectively be controlled, be that the functional of electric energy meter itself is only to update in electrical measurement envelop of function, this has strictly limited the Function Extension of electric energy meter, if need electrical measuring instrument---be to be effectively connected between electric energy meter and load, certainly will need other equipment to realize the monitoring to load, particularly enriching constantly and electrical network constantly complicated for active user's loadtype, the improvement of electric energy meter can not be timely and effective, functionally therefore 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 electromagnetism alternating quantity, therefore cannot utilize the induction installation of conventional electric energy meter to measure, more cannot realize monitoring.Especially for large 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 defect that prior art exists, and proposes a kind of Intelligent integrated formula multifunctional electric energy meter, and it can carry out power consumption metering and load control to 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 integrated formula multifunctional electric energy meter, its technical characterictic is: it comprises an electric energy meter body, described 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, electrical network zero line and live wire access input interface, several user loads access described load monitoring end, on described electric energy meter body, are also provided with:
1) several transmission of being located between input interface and 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 by detecting information output unit, and microprocessor communicates to connect respectively to display and control panel;
3) turn-off module, it comprises switch, switch control unit, control lock and current information dispensing unit, switch control unit is connected with microprocessor communication;
4) transmit port, it is connected to transmit the data message that microprocessor produces with microprocessor communication;
5) display, it is connected to show described data message with microprocessor communication; And
6) control panel, it is connected with microprocessor communication, in order to inputting function control information.
As preferably, current information dispensing unit comprises current sensor, electric current comparison means and data processor, and electric network power line accesses respectively current sensor and electric current comparison means.Current sensor, electric current comparison means are connected successively with data processor, and described data processor is connected to microprocessor.
As preferably, transmit port comprises infrared communications ports, RS485 communication port, ZIGBEE communication port and GPRS communication port.
As preferably, described several transmission connect configuration and comprise switch, and mutual inductor main winding is connected to input interface by switch.
As preferably, several transmission connect configuration and comprise and current information dispensing unit be of coupled connections between described the first contact jaw, the second contact jaw and the 3rd contact jaw.
As preferably, several transmission connect configuration and comprise switch, between described switch control unit and control lock, are 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 lock is to connect electrical network and load;
2) described sampling switching circuit gathers current signal and voltage signal by mutual inductor and the first contact jaw, and described current information dispensing unit obtains current signal by the 3rd terminals.Current signal and the voltage signal of described mutual inductor to electric network power line sampled, and gained sample intelligence is transferred to sampling switching circuit and computation chip subsequently.Current information dispensing unit obtains current signal by the 3rd terminals simultaneously;
3) described sampling switching circuit carries out analog to digital conversion and is transferred to computation chip carrying out data processing to the current signal collecting and voltage signal, detecting information output unit is stored and transmitted it to computation chip to the data message drawing, sampling gained electric current and voltage analog are converted to amount of digital information by sampling switching circuit, is then transferred to computation chip and carries out continuous data calculating and processing.Described computation chip calculates energy value and phase angle to gained amount of digital information.Detecting information output unit is stored and transmitted it to described computation chip to the data message drawing, described detecting information output unit extracts the current acquisition information in data message and transmits it to microprocessor;
4) described current information dispensing unit is current arrangements information by obtained current signal conversion process and transfers to microprocessor;
5) described microprocessor is measured output impedance value and power attenuation value according to current arrangements information and current acquisition information;
6) described microprocessor compares output impedance value and a default impedance threshold, if described output impedance value exceeds default impedance threshold, described microprocessor disconnects turn-off module by switch control unit, if described output impedance value does not exceed default impedance threshold, described microprocessor further judges whether power attenuation value exceeds a default power threshold;
7), if described power attenuation value exceeds default power threshold, described microprocessor is judged loadtype and is warned.This brings in realization by microprocessor and load monitoring.Described monitoring side comprises multiple load cells and tap switch, and these load cells can judge which bar circuit exists overload to connect or improper connection information according to described output impedance value.Described tap switch disconnects so that line load is cut off the electricity supply, information is fed back to microprocessor by sensor simultaneously, described microprocessor is stored in this information recording in the storage unit self being coupled and is transferred to far-end main website server by transmission ends, shows these information warnings simultaneously on described display.If described power attenuation value does not exceed default power threshold, described micro processor controls metering module carries out electric energy metrical.
As preferably, in step 5), described 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
cfor current arrangements information, I
sfor current acquisition information.
As preferably, in step 5), described power attenuation value is according to formula ∑ Δ P=U
xi
c-U
xi
sdraw.Wherein U
xfor the line voltage variable that metering module draws, I
cfor current arrangements information, I
sfor current acquisition information.
In a preferred embodiment of the invention, in step 6), in the time that output impedance value is greater than default impedance threshold, described display will demonstrate the visual information of reflection second state.
Further say it, in a preferred embodiment of the invention, in step 6), in the time that output impedance value is not more than default impedance threshold, described display will demonstrate the visual information of a reflection third state, and as in the foregoing embodiment, turn-off module does not disconnect completely.
Further say it, in a preferred embodiment of the invention, in step 7), in the time that power attenuation value is not more than default power threshold, described display will demonstrate the visual information of reflection first state.
The invention has the beneficial effects as follows apparent:
1, propose a kind of electric power meter of novel structure, this device can be realized the control to user load in realizing metering and billing function;
2, have multiple output ports, data transfer mode is flexible;
3, by record and prompting to electrical network user power utilization state, can make user or maintainer conveniently obtain these data messages, and energy queueing problem in time;
4, use safety, reduce application risk by the Based Intelligent Control to switch.
Brief description of the drawings
Come detailed description the preferred embodiments of the present invention and embodiment hereinafter with reference to accompanying drawing, for convenience of description, only show the necessary module of chief component or device, the same or similar mark in figure represents 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 is the principle composition schematic diagram of integral multifunctional single-phase electric energy meter of the present invention;
Fig. 3 is the theory structure schematic diagram that is connected configuration as a transmission between the input interface of the preferred embodiment of the present invention and load monitoring end;
Fig. 4 is the composition schematic 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 the 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 show the perspective view of a kind of single-phase electric energy meter body 100 based on technical solution of the present invention, in figure, can embody the partial interior limiting structure of electric energy meter, 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 lock 12 of turn-off module 10.Structure, composition or the shape of electric energy meter body 100 can be diversified, for example cylindrical or rectangle, electric energy meter body 100 is avoided external interference for the protection of electric energy meter intraware, 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, as the first preferred embodiment of 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 by input interface 80, and leading-out terminal connects different user loads by load monitoring end 90.
Certainly, as the second preferred embodiment, with further reference to Fig. 1, electric energy meter body 100 of the present invention can be also a kind of three-phase electric energy meter, the input interface of electric energy meter body 100 80 all can be set as to end of incoming cables, and load monitoring end 90 is all set as leading-out terminal to connect user load.Described the first preferred embodiment is only convenient metering object under general situation, and the second preferred embodiment can be for three-phase three-wire electric energy meter or three-phase and four-line electric energy meter.It should be understood that, be same being suitable for if input interface 80 and load monitoring end 90 are defined in respectively on left surface and 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, controlling lock 12 can be the large electric current switch of operating a switch, for cut off electric network power line in the time of user load overload, described cut-out mode will be with the preferred embodiment of the present invention detailed description in addition, mechanical fit system between switch 10a, 10b, the 10c of it and turn-off module 10 interior settings can be switch configuration general in prior art, and it will not go into details herein.
Referring now 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 load monitoring end 90 is connected configuration;
2) 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.Wherein the auxiliary winding of mutual inductor 27a, 27b, 27c is connected to sampling switching circuit 21, computation chip 22 is of coupled connections and is connected to microprocessor 30 by detecting information output unit 23 with sampling switching circuit 21, and microprocessor 30 communicates to connect respectively to display 50 and control panel 70;
3) turn-off module 10, it comprises switch 10a, 10b, 10c, switch control unit 11 and current information dispensing unit 24.Wherein switch control unit 11 communicates to connect with microprocessor 30;
4) transmit port 60, it and microprocessor 30 communicate to connect to transmit the data message that microprocessor 30 produces;
5) display 50, it and microprocessor 30 communicate to connect to show these data messages; And
6) control panel 70, it and microprocessor 30 communicate to connect, 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 communication port, ZIGBEE communication port and GPRS communication port.
As preferably, technical characterictic 1) described several transmission connect configuration and comprise switch 10a, 10b, 10c, mutual inductor 27a, 27b, 27c main winding is by switch 10a, 10b, 10c is connected to input interface 80.Be three-phase power line IN
a, IN
band IN
caccess input interface 80 also directly picks out from load monitoring end 90, and this embodiment is saved internal structure and the wiring of electric energy meter body 100 the most, can be used as first-selection.Certainly, limit other embodiment of technical scheme based on the present invention applicable equally.
In a preferred embodiment of the invention, technical characterictic 1) several transmission connect configuration and comprise and current information dispensing unit 24 be of coupled connections between described the first contact jaw 25a, 25b, 25c and the second contact jaw 26a, 26b, 26c.Fig. 3 has shown the cut-open view that this transmission connects a preferred embodiment of configuration.As shown in the figure, taking a line of electric force as example, this transmission connects configuration and is mainly 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 in the second contact jaw 26a.In order to reach effective electrical isolation, preferably 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 by 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.
In the time controlling lock 12 closure, the current acquisition information I that metering module 20 draws
sthe current arrangements information I drawing with current information dispensing unit 24
cfor generation of an impedance Δ R value, its coincidence formula (1): Δ R=U/ (I
c-I
s) (1)
Wherein U is metering module 20, the voltmeter value of the electrical network circuit that especially DSP 22 draws.Subsequently, microprocessor 30 is by this resistance value R and a predetermined threshold value R
tHEDcompare.If gained R value is to be greater than this threshold value R
tHED, microprocessor 30 is identified this as an event.
The power attenuation of turn-off module 10 can utilize following formula to calculate:
∑ΔP=U
X·I
C-U
X·I
S（2）
Wherein X={A, B, C, A, B ...
The Δ P value drawing will with a predetermined threshold value P
tHEDcompare, to show whether loaded line exists power attenuation.
Referring now to Fig. 4, current information dispensing unit 24 comprises that current sensor (CT) 241, electric current comparison means 242 and data processor 243(are preferably a DSP), electric network power line accesses respectively current sensor 241 and electric current comparison means 242, described current sensor 241, electric current comparison means 242 are connected successively with data processor 243, and described data processor 243 is connected to microprocessor 30.As shown in the figure, taking single-phase electric energy meter as example, power network current I
ainflow current sensor 241 and electric current comparison means 242 respectively, the electric current I that electric current comparison means 242 obtains CT 241
acompare with the electric current I flowing directly into, and export a digital signal level V
oUTgive DSP 243.In Fig. 5, show the preferred embodiment of electric current comparison means 242 of the present invention, 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 form current comparator.
From figure, learn current signal I
abe converted to a voltage signal V through M1 and M2
a, current signal I is converted to a voltage signal V through M3 and M4, then the V of operational amplifier A 1 to prime electric current input stage circuit
acompare V with V signal
awith V signal can be mutually as with reference to signal.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 to be by this I value and former I
aafter value, draw a level signal, to make DSP 243 determine whether exporting a current arrangements signal I according to this signal
c.
Referring again to Fig. 5, when operational amplifier A 1 draws signal V
oUTafter, connect subsequently a latch A2, and input a clock signal clk to carry out latch and synchronous, and export to DSP 243.DSP 243 is according to this signal V
oUTcarry out judgement and the data processing of power network current state, for example V
oUTduring for high level, export I
csignal, when low level, DSP 243 reports an error to microprocessor 30, and the condition prompting that microprocessor 30 can record this error message and for example point out out " connection error " on display 50 connects to carry out again circuit.
Refer again to Fig. 5, if I
a=I, in the situation that circuit is connected, while normally work, the metal-oxide-semiconductor of prime electric current input stage will be in state of saturation, and the M2 of reseting stage and M4 inflow current equate, i.e. V
a=V.The V of output
oUTfor reset signal.If I
a> I, the V of output
oUTfor high level, if I
a< I, the V of output
oUTfor low level.Only at I
a> I, V
oUTduring for high level, that current signal configuration circuit 24 is exported is correct I
csignal.
In DSP 243 corresponding to V
oUTsignal provides a corresponding magnitude of voltage V
c,
I
C=V
C/R
C（3）
Wherein R
c=(R
a+ R)/[1+(G
m1+ G
m2) R
a+ (G
m3+ G
m4) R] (4)
R in 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 meet
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 switch 10a, 10b, 10c, being of coupled connections between described switch control unit 11 and control lock 12.
Turn-off module 10 has at least one state, and in a preferred embodiment of the invention, it has the first state, the second state and the third state.These three kinds of states are by microprocessor 30, the signal controlling of switch control unit 11 to be decided, and the state logic signal that switch control unit 11 provides according to microprocessor 30 carries out break-make control to switch 10a, 10b, 10c.
In more specific words it, under the first state, switch 10a, 10b, 10c closure, thereby connecting subscribers participating load is to provide electric power.And under the second state, switch 10a, 10b, 10c disconnect, thereby stop load that electric power is provided.The third state is a kind of comparatively special state, and it is between described the first state and the second state, and switch is in " protection " state.For example, when in the pressure drop of user load circuit, large or electric energy loss is larger, for some load, directly deenergization, like this may be to some load, especially for example with the electrical equipment of data memory function, need electric power surge time, in this case, still need to ensure within a certain period of time normal power-up.Again for example, in the time of load overload, when illumination or indication information electricity consumption need to be provided in the time of power-off, directly cut-off switch 10a, 10b, 10c, therefore needs an intermediateness to be supported.Switch control unit 11 comprises several electronic directors, and these several indicators can comprise multiple gate circuits, and the control signal of microprocessor 30 is changed to the break-make with gauge tap 10a, 10b, 10c.For example, unit 11 is identified " the first state ", " the second state " and " third state " signal, thereby carries out corresponding actions.
Display 50 can be a liquid crystal display, and it and microprocessor 30 communicate to connect and provide the visual demonstration of a kind of metrical information and status information for user.For example, in a preferred embodiment of the invention, display 50 carries out visual demonstration to electrical network user's Electro-metering information.Under the situation of the normal work of a three-phase intelligent electric-energy meter, refer again to Fig. 2 and Fig. 3, switch 10a, 10b, 10c closure, the first contact jaw 25a, 25b, 25c are connected directly to mutual inductor 27a, 27b, 27c main winding, mutual inductor 27a, 27b, 27c are sampled the current signal in electric network power line and voltage signal, information is transferred to the sampling switching circuit 21 and the computation chip 22 that intercouple subsequently, sampling switching circuit 21 can comprise multiple A/D conversion chips, and sampling gained electric current and voltage analog are converted to amount of digital information I
xand U
x, be then transferred to computation chip 22 and carry out calculating and the processing of data.Computation chip 22 can be a digital signal processor (DSP), the chips such as such as ADE7755, and it is to amount of digital information I
xand U
xcalculate to draw energy value and for example three-phase current and three-phase voltage phase angle
value (taking three-phase and four-line electric energy meter as example):
P=U
A·I
A+U
B·I
B+U
C·I
C（6）
Subsequently, DSP 22 by this communication to microprocessor 30.The P value that microprocessor 30 draws formula (6) is processed, and according to three-phase current voltage phase angle
draw the parameters such as such as active power, applied power, gain coefficient, for some intelligent Heterogeneous electric energy meter, can also realize the data such as time-sharing measurement charging, rate control according to instrument preset function, to be transferred to terminal main website server by transmission ends 60, these data transmission are shown to display 50 simultaneously.It should be noted in the discussion above that in the time that electric energy meter is normally worked, test signal output unit 23 keeps connecting, but does not realize its function, only could be to amount of digital information I in the time that needs are controlled user load
xextract.
Meanwhile, microprocessor 30 is transferred to display 50 by three kinds of circuit states and is shown.For example, the first state is shown as " normally ", and the second state is shown as " power failure ", and the third state is shown as " load protection ",
The Intelligent integrated formula multifunctional electric energy meter of the preferred embodiment of the present invention, comprises step to the control method of load:
1) Closed control lock 12 is to connect electrical network and load.
Under general situation, electrical network user can connect loop by manually opened control lock 12.For example upwards promoting to control lock 12 is that controllable switch 10a, 10b, 10c connect circuit, to realize the power supply to user load.It should be understood that, this is only a kind of technological means of the embodiment of the present invention, as preferably, can omit and control lock 12 or be set in body 100 inside, because need to consider some problems that may occur, whether the material composition of for example controlling lock 12 elements itself is easy to promote, for example under the lower situation of pressure drop of grid, whether there will be again control lock cannot normally closed, the situation that cannot engage.Therefore this control lock 12 embodiment are higher to those skilled in the art's enforcement job requirements, and the switching on element material needing need to meet the requirements, but this embodiment can be used as a kind of technical method of novelty.
2) sampling switching circuit 21 gathers current signal and voltage signal by mutual inductor 27a, 27b, 27c and the first contact jaw 25a, 25b, 25c, as shown in Figure 2, mutual inductor 27a, 27b, 27c current signal and the voltage signal to electric network power line sampled, and sample intelligence is transferred to the sampling switching circuit 21 and the computation chip 22 that intercouple subsequently.Current information dispensing unit 24 obtains current signal by the 3rd terminals 28a, 28b, 28c simultaneously.
3) sampling switching circuit 21 carries out analog to digital conversion and is transferred to computation chip 22 carrying out data processing to the current signal collecting and voltage signal, DSP 22 stores and transmits it to detecting information output unit 23 to the data message drawing, as shown in Figure 2, sampling switching circuit 21 can comprise multiple A/D conversion chips, and sampling gained electric current and voltage analog are converted to amount of digital information I
xand U
x, be then transferred to DSP 22 and carry out continuous data calculating and processing.DSP 22 is to amount of digital information I
xand U
xcalculate energy value P=∑ U
xi
xx=A, and B, C ... and phase angle
value.Detecting information output unit 23 extracts the current acquisition information I in data message
sand transmit it to microprocessor 30.
4) current information dispensing unit 24 is current arrangements information I by obtained current signal conversion process
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) described microprocessor 30 is by output impedance value Δ R and a default impedance threshold R
tHEDcompare, if output impedance value Δ R is greater than default impedance threshold R
tHED, microprocessor 30 disconnects turn-off module 10 by switch control unit 11, if output impedance value Δ R is not more than default impedance threshold R
tHED, microprocessor 30 further judges whether power attenuation value Δ P exceeds a default power threshold P
tHED.
7) if power attenuation value Δ P exceeds default power threshold P
tHED, microprocessor 30 is judged loadtype, and data message is shown by display 50, shows consumer electronics item name and is warned.This mainly realizes by microprocessor 30 and load monitoring end 90, monitoring side 90 comprises multiple load cells and tap switch (not illustrating in Fig. 2), these load cells can judge which bar circuit exists for example information such as " overload connection " or " improper connection " according to previously described output impedance value Δ R, tap switch disconnects so that line load is cut off the electricity supply, information is fed back to microprocessor 30 by sensor simultaneously, microprocessor 30 is stored in this information recording the storage unit self being coupled, for example, in (FLASH or EEPROM) and by transmission ends 60, be transferred to far-end main website server, on display 50, show these information warnings simultaneously, for example " air-conditioning---overload connects " etc.User will carry out respective handling in the time learning these information warnings.If described power attenuation value Δ P does not exceed default power threshold P
tHED, microprocessor 30 is controlled metering module 20 and is carried 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 is greater than default impedance threshold R
tHEDtime, 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 default impedance threshold R
tHEDtime, display 50, by demonstrating the visual information " load protection " of a reflection third state, as previous embodiment, is now separated time off state, therefore turn-off module does not disconnect completely.
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 default power threshold P
tHEDtime, 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, can carry out historical improper electricity consumption recorded information by control panel 70 and browse, or in the time that user load is cut off power supply closing switch again.Meanwhile, for Multifunctional intelligent electric energy meter, can for example obtain many rates, Electro-metering information at times by control panel 70.
These are only the preferred embodiments of the present invention, is not the restriction to technical solution of the present invention.The numeral-classifier compound such as " one ", " one " in previous embodiment is not functional module or element to be defined as single, and it is only that a kind of globality is described.And aforementioned preferred method is not defined as described step.Should be appreciated that all amendments of having done based on the present invention, variation or substitute, all should be covered by the technology category that the present invention advocates.
Claims (5)
1. Intelligent integrated formula multifunctional electric energy meter, for electrical network user being carried out to power consumption metering and load control, it is characterized in that: it comprises an electric energy meter body (100), described electric energy meter body (100) is provided with input interface (80), load monitoring end (90), described input interface (80) and load monitoring end (90) are defined to respectively on two different surfaces of electric energy meter body (100), electrical network zero line and live wire access input interface (80), several user loads access described load monitoring end (90), on described electric energy meter body (100), be also provided with:
Several transmission of being located between input interface (80) and 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), described mutual inductor (27a, 27b, 27c) auxiliary winding is connected to sampling switching circuit (21), described computation chip (22) is of coupled connections and is connected to microprocessor (30) by detecting information output unit (23) with sampling switching circuit (21), described microprocessor (30) communicates to connect respectively to display (50) and control panel (70), turn-off module (10), it comprises switch (10a, 10b, 10c), switch control unit (11), control lock (12) and current information dispensing unit (24), described switch control unit (11) communicates to connect with microprocessor (30),
Transmit port (60), the data message that it and microprocessor (30) communication connection produce with transmission microprocessor (30);
Display (50), it and microprocessor (30) communicate to connect to show described data message; And control panel (70), it and microprocessor (30) communicate to connect, in order to inputting function control information.
2. Intelligent integrated formula multifunctional electric energy meter as claimed in claim 1, is characterized in that: described transmit port (60) comprises infrared communications ports, RS485 communication port, ZIGBEE communication port and GPRS communication port.
3. Intelligent integrated formula multifunctional electric energy meter as claimed in claim 1, it is characterized in that: described current information dispensing unit (24) comprises current sensor (241), electric current comparison means (242) and data processor (243), electric network power line accesses respectively current sensor (241) and electric current comparison means (242), described current sensor (241), electric current comparison means (242) are connected successively with data processor (243), and described data processor (243) is connected to microprocessor (30).
4. Intelligent integrated formula multifunctional electric energy meter as claimed in claim 1, it is characterized in that: described several transmission connect configuration and comprise current information dispensing unit (24), the first contact jaw (25a, 25b, 25c), the second contact jaw (26a, 26b, 26c) with the 3rd contact jaw (28a, 28b, 28c), described the first contact jaw (25a, 25b, 25c), the second contact jaw (26a, 26b, 26c) and the 3rd contact jaw (28a, 28b, 28c) between be of coupled connections.
5. Intelligent integrated formula multifunctional electric energy meter as claimed in claim 1, it is characterized in that: described several transmission connect configuration and comprise switch (10a, 10b, 10c), switch control unit (11) and controlling between lock (12) is of coupled connections.
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 CN102590610A (en) | 2012-07-18 |
| CN102590610B true 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) |
Families Citing this family (8)
| 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 |
| CN103777100B (en) | 2014-01-28 | 2017-11-17 | 刘兵 | Apparatus and method for obtaining power 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 |
| CN108333399A (en) * | 2017-01-20 | 2018-07-27 | 上海逸合电子科技有限公司 | A kind of multifunctional intellectual ammeter junction module |
| DE102018205492A1 (en) * | 2018-04-11 | 2019-10-17 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | 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 |
Family Cites Families (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
Also Published As
| Publication number | Publication date |
|---|---|
| CN102590610A (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102590610B (en) | Intelligent integral multifunctional electric energy meter and method for controlling load by same | |
| AU2019218021A1 (en) | Non-intrusive load identification-based submetering smart electricity meter | |
| CN100557731C (en) | A kind of electronic mutual inductor with anti-stealing electricity function | |
| CN203216988U (en) | Multifunctional electric power meter | |
| CN102323461A (en) | Unit multi-user intelligent electric energy meter box | |
| CN104049141A (en) | Load controlling method of intelligent and integral multifunction watt-hour meter | |
| CN102608414B (en) | Embedded electric energy measuring method and application extension method of high voltage electrical switchgear | |
| CN207650261U (en) | A kind of new distribution network data acquisition terminal | |
| CN103337905A (en) | Digitalized protection and measuring/control device integrated with metering function | |
| CN204405733U (en) | Electronic multi-user multi intelligent electric meter | |
| CN202522623U (en) | Intelligent one-piece multifunctional electric energy meter | |
| CN202093088U (en) | Electrical parameter measuring device | |
| CN208738688U (en) | A kind of multifunctional unit distribution system | |
| CN106655732A (en) | Programmable controller-controlled test object control power supply | |
| Rashid et al. | Design and implementation of load balancing system for a smart home | |
| CN201583594U (en) | Single-phase carrier electric energy meter | |
| CN216312755U (en) | But remote monitoring's vary voltage cabinet | |
| CN201528212U (en) | Diesel set power divider | |
| CN205193156U (en) | Smart electric meter with self -adaptation protection | |
| CN212159933U (en) | Ammeter based on RS485 data routing sharing | |
| CN104682554A (en) | Intelligent power distribution monitoring cabinet | |
| CN206892162U (en) | A kind of buckle-type transformer based on MCU controllers | |
| CN202770874U (en) | High-voltage dry-type composite transformation ratio automatic conversion metering box | |
| CN202421330U (en) | Single-phase wide-range charge-controlled intelligent ammeter | |
| CN207311162U (en) | A kind of alternating-current charging pile |
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 for 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 |