CN203849338U - Electric energy metering device for high-voltage aerial cables - Google Patents
Electric energy metering device for high-voltage aerial cables Download PDFInfo
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- CN203849338U CN203849338U CN201420171948.9U CN201420171948U CN203849338U CN 203849338 U CN203849338 U CN 203849338U CN 201420171948 U CN201420171948 U CN 201420171948U CN 203849338 U CN203849338 U CN 203849338U
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- 238000000034 method Methods 0.000 abstract description 9
- 230000005611 electricity Effects 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000284 extract Substances 0.000 description 3
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Abstract
The utility model discloses an electric energy metering device for high-voltage aerial cables. The electric energy metering device comprises a voltage extracting and energy fetching unit, a current sensor, metering units, a remote transmission module and a wireless module. By utilization of the device, one metering unit receives a voltage signal output by the voltage extracting and energy fetching unit, receives a current signal output by the current sensor, calculates phase line electric energy, sends the obtained phase line electric energy and an electrical value to other metering units through the wireless module, receives electric energy and electrical values from other metering units, adds the electric energy of the metering unit to the electric energy of other metering units to obtain the total electric energy, packages the total electric energy and the electrical values according to a certain format and transmits the total electric energy and the electrical values to an electricity consumption management system through the remote transmission module. The electric energy metering device is installed in a suspension mode, people do not need to change the original wiring mode or additionally manufacture supports, installation is easy and convenient, and space is saved. Meanwhile, an electric energy metering method is in a dual-channel redundancy mode, and obtained electric energy data are more accurate.
Description
[technical field]
The utility model relates to electric-power metering field, particularly a kind of high voltage overhead cable electric power meter.
[background technology]
Existing 3～220kV high voltage overhead cable electric energy metrical implementation is by a support is set on the tower bar at high-tension cable or on the stand of outdoor transformer, then rack-mount to High-voltage measuring box or high-voltage electric energy meter, need carry out reconfiguration to original circuit, could be by A, B, C three-phase voltage, electric current is incorporated in high-voltage electric energy meter or High-voltage measuring box.This implementation is not only installed complicated loaded down with trivial details, and easily wrong line, and support takes up room, and increases cost.
[summary of the invention]
In order to address the above problem, the utility model provides a kind of high voltage overhead cable electric power meter.
The utility model adopts following technical scheme:
A kind of high voltage overhead cable electric power meter, is suspended on 3～220kV high voltage overhead cable, comprises voltage extracting and gets energy unit, current sensor, metering units, remote-transmission module, wireless module.Voltage extracting and get can unit a secondary input end be attempted by between phase line and phase line or be attempted by between phase line and zero line, secondary output terminal access metering units, one secondary input end of current sensor is serially connected in phase line, secondary output terminal access metering units, remote-transmission module, wireless module are connected with metering units.
Voltage extracting and get and can unit be used for extracting the voltage signal between phase line and phase line or between phase line and zero line and voltage signal is exported to metering units, and to metering units, remote-transmission module, wireless module provides power supply; Current sensor is used for extracting phase line current signal and current signal is exported to metering units; Metering units is used for, according to voltage signal and the current signal of input, measuring and including but not limited to electric energy, power, electric current, voltage, frequency, harmonic wave numerical value and changing value thereof; Remote-transmission module, for the communication between metering units and power consuming administrative system, sends the measurement numerical value of metering units to power consuming administrative system, receive the director data of power consuming administrative system and send metering units to; Wireless module, for the communication between metering units, mutually sends, receives the measurement numerical value of metering units between metering units.
Preferably, metering units, according to the measurement numerical value receiving from other metering units, is used for including but not limited to add up, and gathers computing, obtains final measurement.
Preferably, current sensor, metering units, remote-transmission module, wireless module is encapsulated in metal shielding box.
Preferably, can unit to can be, but not limited to be electromagnetic potential transformer, capacitance type mutual inductor, resistance-type mutual inductor or hybrid voltage mutual inductor for voltage extracting and getting.
Preferably, to can be, but not limited to be electromagnetic type current transformer or electronic current mutual inductor to current sensor.
Preferably, to can be, but not limited to be GPRS module or power line carrier module to remote-transmission module.
Preferably, to can be, but not limited to be Zigbee module to wireless module.
Preferably, described high voltage overhead cable electric power meter also comprise with voltage extracting and get can units in series fuse, voltage extracting and get can unit and the series circuit of fuse be attempted by between phase line and phase line or be attempted by between phase line and zero line.
From such scheme, described device adopts suspension type mounting means, need not change original mode of connection, and need not make in addition support, installs simple and convenient and saves space, effectively avoids the mistake meter that causes because of error connection, leaks quantity calculation, stealing electricity phenomenon; And described device standardized packages, is convenient to produce, and is applicable to the metering of single-phase high voltage system and three-phase high-voltage system.
Metering method described in the utility model, also comprises the steps:
(1), metering units receiver voltage extract and get can unit the voltage signal of output, the current signal of current sensor output, calculates phase line electric energy;
(2), metering units sends the phase line electric energy calculating and electric numerical value to other metering units by wireless module, receives electric energy and electric numerical value from other metering units simultaneously;
(3), metering units is added the electric energy of self electric energy and other metering units, obtains total electric energy;
(4), metering units is total electric energy, electric numerical value, by certain format packing, sends power consuming administrative system to by remote-transmission module.
From such scheme, multiple metering units of phase three-wire three high-pressure system or three four-wire systems adopt binary channels continuous data redundant mode or double-channel redundant mode, have improved data accuracy.
[brief description of the drawings]
Fig. 1 two meter technique phase three-wire three electrical schematic diagram;
Fig. 2 two meter technique phase three-wire three structural representation;
Fig. 3 genuine standard three-phase and four-line electrical schematic diagram;
Figure of description description of symbols:
11,21: voltage extracting and get can unit;
12,22: current sensor;
13,23: metering units;
14,24: remote-transmission module;
15,25: wireless module;
16,26: can;
17,27: high-tension fuse.
[embodiment]
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.
As depicted in figs. 1 and 2, be the two meter technique embodiment of the utility model in three-phase three wire system.
One end that AB phase voltage extracted and got high input voltage that can unit 11 is connected to A and goes up mutually, the other end of high input voltage is connected to B and goes up mutually, voltage extracting and get can unit 11 for extracting the voltage signal that AB is alternate, and supply with working powers to A phase metering units 13, A phase remote-transmission module 14 and A phase wireless module 15 circuit.The primary winding of A phase current sensor 12 is serially connected on A phase aerial cable, input A phase current, secondary output current access A phase metering units 13.Current sensor 12 is for extracting A phase current signal.Settle on mutually metering units 13 come from 11 voltage signal and come from 12 current signal and go out to include but not limited to electric values and the changing values thereof such as electric energy, power, electric current, voltage, frequency, harmonic wave according to these signal measurements for obtaining at A.
One end that CB phase voltage extracted and got high input voltage that can unit 21 is connected to C and goes up mutually, the other end of high input voltage is connected to B and goes up mutually voltage extracting and get energy unit 21 for extracting the voltage signal that BC is alternate, supplies with working powers to C phase metering units 23, C phase remote-transmission module 24 and C phase wireless module 25 circuit.The primary winding of C phase current sensor 22 is serially connected on C phase aerial cable, input C phase current, secondary output current access C phase metering units 23.Current sensor 22 is for extracting C phase current signal.Settle on mutually metering units 23 come from 21 voltage signal and come from 22 current signal and go out to include but not limited to electric values and the changing values thereof such as electric energy, power, electric current, voltage, frequency, harmonic wave according to these signal measurements for obtaining at C.
Arrange respectively mutually with metering units 13,23 wireless modules 15 and 25 for electric values such as electric energy that mutually sending and receiving the other side measures at A, C, these values are delivered to metering units 13 and 23 and carry out other calculating of cumulative sum and then gather to obtain final measurement; The remote-transmission module 14 and 24 being connected with metering units 13,23 is set respectively mutually for receiving and send metering units 13 and 23 uses to by measurement data unofficial biography with outside director data at A, C;
AB phase voltage extracts and gets can unit 11, A phase current sensor 12, A phase metering units 13, A phase remote-transmission module 14, A phase wireless module 15 form A phase gauge assembly, directly be suspended on 3～220kV A phase high voltage overhead cable, operating potential is the noble potential of A phase, and reference potential is the noble potential of B phase;
CB phase voltage extracts and gets energy unit 21, C phase current sensor 22, C phase metering units 23, C phase remote-transmission module 24, C phase wireless module 25, composition C phase gauge assembly, directly be suspended on 3～220kV C phase high voltage overhead cable, operating potential is the noble potential of C phase, and reference potential is the noble potential of B phase;
A phase gauge assembly, C phase gauge assembly jointly form three-phase and directly measure high voltage electric energy device.
Voltage extracting and get and can unit 11,21 can adopt electromagnetic potential transformer, also can adopt condenser type, resistance-type or hybrid battery pressure sensor.
Current sensor 12,22 can adopt the current transformer (CT) of electromagnetic type, also can adopt low power consumption current mutual inductor (LPCT), or the electronic current mutual inductor (ECT) of small voltage output; Can adopt the mounting structure of a punching, also can adopt the mounting structure being once fixedly connected, can also adopt the mounting structure of open C T.
A phase metering units 13 receives the secondary current that secondary voltage that AB phase voltage extracting unit 11 exports and A phase current sensor 12 are exported, the A phase electric energy of measuring and and other electric parameters send C phase metering units 21 to by wireless module 15; C phase metering units 21 is measured the A phase electric energy receiving C phase electric energy with self is added, and obtains the total electric energy of three-phase, to the electric parameters packing obtaining, passes 24 power consuming administrative systems to a distant place by remote-transmission module by certain form.
C phase metering units 23 receives the secondary current that secondary voltage that BC phase voltage extracting unit 21 exports and C phase current sensor 22 are exported, and the C phase electric energy of measuring and other electric parameters send A phase metering units 11 to by wireless module 25; A phase metering units 11 is measured the C phase electric energy receiving A phase electric energy with self is added, and obtains the total electric energy of three-phase, to the electric parameters packing obtaining, passes to the power consuming administrative system in a distant place by certain form by remote-transmission module 14.
A phase metering units 11 and C phase metering units 21 carry out electric energy simultaneously and always add, and pass to the power consuming administrative system in a distant place simultaneously, reach the object of data redundancy.
The instruction that A phase metering units 11 and C phase metering units 21 can receive power consuming administrative system arranges, resets, freezes, retransmits ... Deng corresponding operation.
It is GPRS module, power line carrier module that A phase remote-transmission module 14 and C phase remote-transmission module 24 can be, but not limited to, and can be also the wireless communication module of any other form.
It is small wireless, Zigbee that A phase wireless module 15 and C phase wireless module 25 can be, but not limited to, and can be also other any communications.
A phase current sensor 12, A phase metering units 13, A phase remote-transmission module 14, A phase wireless module (15) are encapsulated in A phase metal shielding box 16.
C phase current sensor 22, C phase metering units 23, C phase remote-transmission module 24, C phase wireless module 25 are encapsulated in C phase metal shielding box 26.
One end that AB phase voltage extracted and got energy unit 11 high input voltages access B phases can be connected in series an A phase high-tension fuse 17, and A phase high-tension fuse 17 can directly seal in and be suspended on the high voltage cable that AB is alternate;
One end that BC phase voltage extracted and got energy unit 21 high input voltages access B phases can be connected in series a C phase high-tension fuse 27, and C phase high-tension fuse 27 can directly seal in and be suspended on the high voltage cable of BC phase.
The present embodiment not only can be taking A phase and C mutually as work phase, B be mutually as with reference to phase, also can be taking A phase and B mutually as work phase, C be mutually as with reference to phase, or taking B phase and C as work phase, A are mutually as with reference to phase.
The three-phase of the present embodiment directly measures high voltage electric energy method and apparatus not only can be for small connect ground system, and can be for large earthed system.The phase three-wire three metering method of two meter technique can be used, the three-phase and four-line metering method of genuine standard can also be used for, as long as increase a gauge assembly at B on mutually, and with reference to changing neutral point or the neutral line into mutually, as shown in Figure 3; Can also use a gauge assembly for the metering to single-phase high voltage circuit.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a high voltage overhead cable electric power meter, be suspended on 3～220kV high voltage overhead cable, comprise voltage extracting and get energy unit, current sensor, metering units, remote-transmission module, wireless module, voltage extracting and get can unit a secondary input end be attempted by between phase line and phase line or be attempted by between phase line and zero line, secondary output terminal access metering units, one secondary input end of current sensor is serially connected in phase line, secondary output terminal access metering units, and remote-transmission module, wireless module are connected with metering units.
2. high voltage overhead cable electric power meter according to claim 1, it is characterized in that: voltage extracting and get and can unit be used for extracting the voltage signal between phase line and phase line or between phase line and zero line and voltage signal is exported to metering units, and provide power supply to metering units, remote-transmission module, wireless module;
Current sensor is used for extracting phase line current signal and current signal is exported to metering units;
Metering units, according to voltage signal and the current signal of input, is measured and is included but not limited to electric energy, power, electric current, voltage, frequency, harmonic wave numerical value and changing value thereof;
Remote-transmission module, for the communication between metering units and power consuming administrative system, sends the measurement numerical value of metering units to power consuming administrative system, receive the director data of power consuming administrative system and send metering units to;
Wireless module, for the communication between metering units, mutually sends, receives the measurement numerical value of metering units between metering units.
3. high voltage overhead cable electric power meter according to claim 1 and 2, is characterized in that metering units, according to the measurement numerical value receiving from other metering units, is used for including but not limited to add up, and gathers computing, obtains final measurement.
4. high voltage overhead cable electric power meter according to claim 1, is characterized in that current sensor, metering units, and remote-transmission module, wireless module is encapsulated in metal shielding box.
5. high voltage overhead cable electric power meter according to claim 1, voltage extracting and get can unit be electromagnetic potential transformer or capacitance type mutual inductor or resistance-type mutual inductor or hybrid voltage mutual inductor.
6. high voltage overhead cable electric power meter according to claim 1, current sensor is electromagnetic type current transformer or electronic current mutual inductor.
7. high voltage overhead cable electric power meter according to claim 1, remote-transmission module is GPRS module or power line carrier module.
8. high voltage overhead cable electric power meter according to claim 1, wireless module is Zigbee module.
9. high voltage overhead cable electric power meter according to claim 1, also comprise with voltage extracting and get can units in series fuse, voltage extracting and get can unit and the series circuit of fuse be attempted by between phase line and phase line or be attempted by between phase line and zero line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420171948.9U CN203849338U (en) | 2014-04-10 | 2014-04-10 | Electric energy metering device for high-voltage aerial cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420171948.9U CN203849338U (en) | 2014-04-10 | 2014-04-10 | Electric energy metering device for high-voltage aerial cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203849338U true CN203849338U (en) | 2014-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420171948.9U Expired - Lifetime CN203849338U (en) | 2014-04-10 | 2014-04-10 | Electric energy metering device for high-voltage aerial cables |
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| Country | Link |
|---|---|
| CN (1) | CN203849338U (en) |
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2014
- 2014-04-10 CN CN201420171948.9U patent/CN203849338U/en not_active Expired - Lifetime
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Granted publication date: 20140924 |
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| CX01 | Expiry of patent term |