CN204177954U - A kind of 35kV global error of high voltage energy metering installation verification system - Google Patents
A kind of 35kV global error of high voltage energy metering installation verification system Download PDFInfo
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- CN204177954U CN204177954U CN201420453156.0U CN201420453156U CN204177954U CN 204177954 U CN204177954 U CN 204177954U CN 201420453156 U CN201420453156 U CN 201420453156U CN 204177954 U CN204177954 U CN 204177954U
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Abstract
The utility model provides a kind of 35kV global error of high voltage energy metering installation verification system, comprise: low-voltage metering cabinet, feedback of voltage and current control device, high-voltage power supply, described low-voltage metering cabinet, feedback of voltage and current control device, high-voltage power supply are connected successively, the utility model has that volume is little, cost is low, good insulation preformance, and can be applied to the advantage of 35kV high-voltage electric-energy meter.
Description
Technical field
The utility model proposes a kind of power measurement device, especially relate to a kind of 35kV global error of high voltage energy metering installation verification system.
Background technology
Conventional high-tension electric power meter is electric-power metering cabinet or batch meter mainly.They are by together with multiple separating component common combinations such as voltage transformer (VT), current transformer and electric energy meter.Its overall accuracy, except being affected by each parts accuracy, also affects by factors such as on-the-spot voltage circuit secondary voltage drop, secondary loads.Be limited to technical reason, usual overall accuracy can only represent by composition error, and this error is from the error of the error of the fundamental error of electric current, voltage transformer (VT), the mode of connection (voltage transformer secondary voltage drop) and electric energy meter by r.m.s. method COMPREHENSIVE CALCULATING out.
Cardinal rule according to International Electrotechnical Commission (IEC) specifies about electric energy meter and calibrator for watt-hour meter: the error of all instrument and measurement mechanism all must carry out actual measurement, without measurement, only error that is that calculate in measuring with other and that quote the combination of voltage, electric current and power factor, can not as the foundation of evaluating apparatus fundamental error.And except accurate definition, cannot also there is following subject matter except the overall accuracy of measuring in conventional electric power metering cabinet or batch meter:
(1) because electric energy meter is arranged on low-pressure area, be difficult to prevent low pressure electricity filching behavior, cause very high line loss per unit.
(2) volume is large, wiring is complicated, and mutual inductor weight is more than hundred kilograms, and carrying and installation is inconvenient, limits and extensively arranges and installation metering points of electric energy in power distribution network.
(3) there is the safety hazards such as ferroresonance, leakage of oil in the mutual inductor of traditional magnetic induction way, and insulating property are poor, dangerous.
(4) the global error calibrating of 35kV high-voltage electric-energy meter can not be applied to.
Therefore, current power measurement field is badly in need of that a kind of volume is little, cost is low, good insulation preformance, and can be applied to the error testing system of 35kV high-voltage electric-energy meter, thus the grade of errors of accurate evaluation device.
Utility model content
In order to solve the problem, the utility model provide a kind of can the error testing system of Measurement accuracy high-voltage electric-energy meter error.A kind of 35kV global error of high voltage energy metering installation verification system that the utility model provides, the technical solution adopted in the utility model is as follows:
A kind of 35kV global error of high voltage energy metering installation verification system, comprises low-voltage metering cabinet, feedback of voltage and current control device and high-voltage power supply, low-voltage metering cabinet, feedback of voltage and current control device, high-voltage power supply is connected successively, and low-voltage metering cabinet comprises display, keyboard, industrial computer, serial server, signal source, standard electric energy meter, Error processing module, A phase voltage power amplifier, A phase voltage load matched, A phase current power amplifier, A phase current load matched, B phase voltage power amplifier, B phase voltage load matched, B phase current power amplifier, B phase current load matched, C phase voltage power amplifier, C phase voltage load matched, C phase current power amplifier and C phase current load matched, described display, keyboard is connected with industrial computer respectively, industrial computer, signal source, Error processing module, standard electric energy meter, feedback of voltage and current control device is connected with serial server respectively, and standard electric energy meter is connected with high-voltage power supply, signal source and A phase voltage power amplifier, A phase current power amplifier, B phase voltage power amplifier, B phase current power amplifier, C phase voltage power amplifier, C phase current power amplifier is connected respectively, A phase voltage power amplifier is connected with A phase voltage load matched, A phase current power amplifier is connected with A phase current load matched, B phase voltage power amplifier is connected with B phase voltage load matched, B phase current power amplifier is connected with B phase current load matched, C phase voltage power amplifier is connected with C phase voltage load matched, and C phase current power amplifier is connected with C phase current load matched, A phase voltage load matched, A phase current load matched, B phase voltage load matched, B phase current load matched, C phase voltage load matched, C phase current load matched is connected with feedback of voltage and current control device respectively, high-voltage power supply comprises A phase high pressure generator, A phase strong current generator, A phase big current copper bar, B phase high pressure generator, B phase strong current generator, B phase big current copper bar, C phase high pressure generator, C phase strong current generator, C phase big current copper bar, A phase high pressure generator, A phase strong current generator is connected with A phase big current copper bar respectively, B phase high pressure generator, B phase strong current generator is connected with B phase big current copper bar respectively, C phase high pressure generator, C phase strong current generator is connected with C phase big current copper bar respectively, A phase big current copper bar, B phase big current copper bar, C phase big current copper bar is connected with tested high-voltage electric-energy meter respectively, A phase high pressure generator, A phase strong current generator, B phase high pressure generator, B phase strong current generator, C phase high pressure generator, C phase strong current generator is connected with feedback of voltage and current control device respectively.
Be characterized as further and also comprise infrared emission supervising device, infrared emission supervising device is arranged at the outside of 35kV global error of high voltage energy metering installation verification system.
Be characterized as standard electric energy meter, feedback of voltage and current control device further and between serial server, adopt the mode of optical fiber communication to be connected.
The utility model compared with the existing technology, has the following advantages and beneficial effect:
1, the utility model adopts the separately design of voltage circuit and current return, greatly improves dielectric strength, prevents the generation of flashover and voltage breakdown accident, safer, reliable when making native system practical.
2, the capacity of the voltage circuit of the utility model mesohigh power supply only needs to consider voltage signal sensor, the voltage circuit power consumption of tested high-voltage electric-energy meter, the loss of high pressure generator and test loop loss, by independent voltage power amplifier and high pressure generator, three-phase low-voltage signal is boosted, reach high pressure measurement verification standard, therefore without the need to the capacity of very large voltage circuit, thus greatly reduce the cost of system, be convenient to promote the use of.
3, the capacity of the current return of the utility model mesohigh power supply only considers strong current generator loss, current signal sensor, the current return power consumption of tested high-voltage electric-energy meter and test loop loss, by independently current signal is carried out up-flow by current amplification and strong current generator, therefore without the need to the capacity of very large voltage circuit, the capacity of current return, thus greatly reduce the cost of system, be convenient to promote the use of.
4, the utility model Plays electric energy meter, feedback of voltage and current control device and adopt the mode of optical fiber communication to be connected between serial server, and adopts compared with RS-485 communicates in prior art, have that capacity is large, decay little, that antijamming capability is strong advantage.
5, the utility model has infrared emission supervising device, can send warning when non-working person enters in native system, the generation of the accident that meets accident.
6, the utility model has the advantages that volume is little, wiring is simple, cost is low, thus convenient in carrying, installs simple, is easy to promote the use of.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structured flowchart of a kind of 35kV global error of high voltage energy metering installation of the utility model verification system;
Fig. 2 is the circuit connecting relation figure of a kind of 35kV global error of high voltage energy metering installation of the utility model verification system;
Fig. 3 is the circuit connecting relation figure of the optical fiber communication of a kind of 35kV global error of high voltage energy metering installation of the utility model verification system.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment
As illustrated in figs. 1 and 2, a kind of 35kV global error of high voltage energy metering installation verification system, comprise low-voltage metering cabinet 1, feedback of voltage and current control device 2 and high-voltage power supply 3, low-voltage metering cabinet 1, feedback of voltage and current control device 2, high-voltage power supply 3 are connected successively;
Low-voltage metering cabinet 1 comprises display 11, keyboard 12, industrial computer 13, serial server 14, signal source 15, standard electric energy meter 16, Error processing module 17, A phase voltage power amplifier 18, A phase voltage load matched 19, A phase current power amplifier 110, A phase current load matched 111, B phase voltage power amplifier 112, B phase voltage load matched 113, B phase current power amplifier 114, B phase current load matched 115, C phase voltage power amplifier 116, C phase voltage load matched 117, C phase current power amplifier 118 and C phase current load matched 119, display 11, keyboard 12 is connected with industrial computer 13 respectively, industrial computer 13, signal source 15, Error processing module 17, standard electric energy meter 16, feedback of voltage and current control device 2 is connected with serial server 14 respectively, Error processing module 17 and tested high-voltage electric-energy meter, and standard electric energy meter 16 is connected with high-voltage power supply 3, signal source 15 and A phase voltage power amplifier 18, A phase current power amplifier 110, B phase voltage power amplifier 112, B phase current power amplifier 114, C phase voltage power amplifier 116, C phase current power amplifier 118 is connected respectively, A phase voltage power amplifier 18 is connected with A phase voltage load matched 19, A phase current power amplifier 110 is connected with A phase current load matched 111, B phase voltage power amplifier 112 is connected with B phase voltage load matched 113, B phase current power amplifier 114 is connected with B phase current load matched 115, C phase voltage power amplifier 116 is connected with C phase voltage load matched 117, and C phase current power amplifier 118 is connected with C phase current load matched 119, A phase voltage load matched 19, A phase current load matched 111, B phase voltage load matched 113, B phase current load matched 115, C phase voltage load matched 117, C phase current load matched 119 is connected with feedback of voltage and current control device 2 respectively,
High-voltage power supply 3 comprises A phase high pressure generator 31, A phase strong current generator 32, A phase big current copper bar 33, B phase high pressure generator 34, B phase strong current generator 35, B phase big current copper bar 36, C phase high pressure generator 37, C phase strong current generator 38 and C phase big current copper bar 39, A phase high pressure generator 31, A phase strong current generator 32 is connected with A phase big current copper bar 33 respectively, B phase high pressure generator 34, B phase strong current generator 35 is connected with B phase big current copper bar 36 respectively, C phase high pressure generator 37, C phase strong current generator 38 is connected with C phase big current copper bar 39 respectively, A phase big current copper bar 33, B phase big current copper bar 36, C phase big current copper bar 39 is connected with tested high-voltage electric-energy meter respectively, A phase high pressure generator 31, A phase strong current generator 32, B phase high pressure generator 34, B phase strong current generator 35, C phase high pressure generator 37, C phase strong current generator 38 is connected with feedback of voltage and current control device 2 respectively.
35kV global error of high voltage energy metering installation verification system of the present utility model also comprises infrared emission supervising device 4, and infrared emission supervising device 4 is arranged at the outside of 35kV global error of high voltage energy metering installation verification system.
Standard electric energy meter 16, the mode of optical fiber communication between feedback of voltage and current control device 2 with serial server 14, is adopted to be connected.
As shown in Figure 2, I in figure is voltage power amplifier, comprising: in A phase voltage power amplifier 18, B phase voltage power amplifier 112, C phase voltage power amplifier 116, figure II is current amplification, comprising: A phase current power amplifier 110, B phase current power amplifier 114, C phase current power amplifier 118.
As shown in Figure 3, the circuit of optical fiber communication is made up of electron device SN75451, HFBR-1521T, HFBR-2521R, U3 is SN75451, U4 be HFBR-1521T, U5 is HFBR-2521R, U3 pin 5,6,7,8 short circuit ground connection, direct supply VCC connects pin 1, pin 4 ground connection, pin 1 and pin 4 shunt capacitance E4, E4 specification selects excellent 10uF/16V; Pin 1 and pin 3 shunt capacitance C9, the preferred 100nF of C9 specification; U3 pin 8 is connected U4 pin 1 after connecting with resistance R44; U5 pin 1 is connected with pin 4, after pin 2 ground connection, pin 3 meet direct supply VCC, and pin 2 and pin 3 shunt capacitance C10, the preferred 100nF of C10 specification.In addition, the utility model also has RS-485 communication interface for subsequent use, in order to using.
Utility model works principle is: low-voltage metering cabinet 1, according to parameter request, comprises signal amplitude, frequency, phase place, export the number of phases, superposition overtone order and amplitude etc., relevant parameter is sent to corresponding signal generation module, all signal generator modules all adopt same clock signal and original bench mark signal, and each road signal outputs to respective power amplifier again, and namely signal is outputted to A phase voltage power amplifier by signal source 15, A phase current power amplifier, B phase voltage power amplifier, B phase current power amplifier, C phase voltage power amplifier, C phase current power amplifier, after being amplified by corresponding power amplifier, provide satisfactory low voltage three-phase voltage and three-phase current signal to export, after feedback of voltage and current control device 2, high-pressure section is by low voltage voltage, the voltage that current signal generating means is sent here, current signal is through A phase high pressure generator 31, B phase high pressure generator 34, C phase high pressure generator 37 boosts, A phase strong current generator 32, B phase strong current generator 35, after C phase strong current generator 38 up-flow, output to tested high-voltage electric-energy meter, tested high-voltage electric-energy meter exports electrical energy pulse and delivers to Error processing module 17.Output voltage and current signal are to standard electric energy meter 16 after mutual inductor conversion for the electric current and voltage of simultaneously high-voltage power supply 3, and standard electric energy meter 16 exports pulse and compares to Error processing module 17, finally draws electric energy error.
The utility model adopts the separately design of voltage circuit and current return, greatly improves dielectric strength, prevents the generation of flashover and voltage breakdown accident, safer, reliable when making native system practical.
The capacity of the voltage circuit of the utility model mesohigh power supply only needs to consider voltage signal sensor, the voltage circuit power consumption of tested high-voltage electric-energy meter, the loss of high pressure generator and test loop loss, by independent voltage power amplifier and high pressure generator, three-phase low-voltage signal is boosted, reach high pressure measurement verification standard, therefore without the need to the capacity of very large voltage circuit, thus greatly reduce the cost of system, be convenient to promote the use of.
The capacity of the current return of the utility model mesohigh power supply only considers strong current generator loss, current signal sensor, the current return power consumption of tested high-voltage electric-energy meter and test loop loss, by independently current signal is carried out up-flow by current amplification and strong current generator, therefore without the need to the capacity of very large voltage circuit, the capacity of current return, thus greatly reduce the cost of system, be convenient to promote the use of.
The utility model Plays electric energy meter, feedback of voltage and current control device are connected with adopting the mode of optical fiber communication between serial server, and adopt compared with RS-485 communicates in prior art, have that capacity is large, decay little, that antijamming capability is strong advantage.
The utility model has infrared emission supervising device, can send warning when non-working person enters in native system, prevents the generation of mishap.
The utility model has the advantages that volume is little, wiring is simple, cost is low, thus convenient in carrying, installs simple, is easy to promote the use of.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a 35kV global error of high voltage energy metering installation verification system, comprises low-voltage metering cabinet, feedback of voltage and current control device, high-voltage power supply, and described low-voltage metering cabinet, feedback of voltage and current control device, high-voltage power supply are connected successively, it is characterized in that:
Described low-voltage metering cabinet comprises display, keyboard, industrial computer, serial server, signal source, standard electric energy meter, Error processing module, A phase voltage power amplifier, A phase voltage load matched, A phase current power amplifier, A phase current load matched, B phase voltage power amplifier, B phase voltage load matched, B phase current power amplifier, B phase current load matched, C phase voltage power amplifier, C phase voltage load matched, C phase current power amplifier and C phase current load matched, described display, keyboard is connected with industrial computer respectively, described industrial computer, signal source, Error processing module, standard electric energy meter, feedback of voltage and current control device is connected with serial server respectively, and described standard electric energy meter is connected with high-voltage power supply, described signal source and A phase voltage power amplifier, A phase current power amplifier, B phase voltage power amplifier, B phase current power amplifier, C phase voltage power amplifier, C phase current power amplifier is connected respectively, described A phase voltage power amplifier is connected with A phase voltage load matched, described A phase current power amplifier is connected with A phase current load matched, described B phase voltage power amplifier is connected with B phase voltage load matched, described B phase current power amplifier is connected with B phase current load matched, described C phase voltage power amplifier is connected with C phase voltage load matched, and described C phase current power amplifier is connected with C phase current load matched, described A phase voltage load matched, A phase current load matched, B phase voltage load matched, B phase current load matched, C phase voltage load matched, C phase current load matched is connected with feedback of voltage and current control device respectively,
Described high-voltage power supply comprises A phase high pressure generator, A phase strong current generator, A phase big current copper bar, B phase high pressure generator, B phase strong current generator, B phase big current copper bar, C phase high pressure generator, C phase strong current generator and C phase big current copper bar, described A phase high pressure generator, A phase strong current generator is connected with A phase big current copper bar respectively, described B phase high pressure generator, B phase strong current generator is connected with B phase big current copper bar respectively, described C phase high pressure generator, C phase strong current generator is connected with C phase big current copper bar respectively, described A phase big current copper bar, B phase big current copper bar, C phase big current copper bar is connected with tested high-voltage electric-energy meter respectively, described A phase high pressure generator, A phase strong current generator, B phase high pressure generator, B phase strong current generator, C phase high pressure generator, C phase strong current generator is connected with feedback of voltage and current control device respectively.
2. a kind of 35kV global error of high voltage energy metering installation verification system according to claim 1, it is characterized in that, also comprise infrared emission supervising device, described infrared emission supervising device is arranged at the outside of 35kV global error of high voltage energy metering installation verification system.
3. a kind of 35kV global error of high voltage energy metering installation verification system according to claim 1 and 2, it is characterized in that, described standard electric energy meter, feedback of voltage and current control device are connected with adopting the mode of optical fiber communication between serial server.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420453156.0U CN204177954U (en) | 2014-08-12 | 2014-08-12 | A kind of 35kV global error of high voltage energy metering installation verification system |
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| CN201420453156.0U CN204177954U (en) | 2014-08-12 | 2014-08-12 | A kind of 35kV global error of high voltage energy metering installation verification system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738850A (en) * | 2014-12-10 | 2016-07-06 | 云南电网公司电力科学研究院 | High-voltage voltage and current signal generation control device |
| CN106338706A (en) * | 2015-07-10 | 2017-01-18 | 侯飞 | Electric energy metering device overall error detecting method, device and system |
| CN106338705A (en) * | 2015-07-10 | 2017-01-18 | 侯飞 | Error verifying method and device for three-phase electric energy metering device |
-
2014
- 2014-08-12 CN CN201420453156.0U patent/CN204177954U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738850A (en) * | 2014-12-10 | 2016-07-06 | 云南电网公司电力科学研究院 | High-voltage voltage and current signal generation control device |
| CN106338706A (en) * | 2015-07-10 | 2017-01-18 | 侯飞 | Electric energy metering device overall error detecting method, device and system |
| CN106338705A (en) * | 2015-07-10 | 2017-01-18 | 侯飞 | Error verifying method and device for three-phase electric energy metering device |
| CN106338705B (en) * | 2015-07-10 | 2019-03-01 | 侯飞 | A kind of method and apparatus of the verification error for three-phase electric energy metering device |
| CN106338706B (en) * | 2015-07-10 | 2019-09-24 | 侯飞 | A kind of methods, devices and systems of electric energy metering device global error detection |
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Granted publication date: 20150225 |