CN201804097U - High voltage electric energy metering device with on-line checking and testing standard - Google Patents
High voltage electric energy metering device with on-line checking and testing standard Download PDFInfo
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- CN201804097U CN201804097U CN201020258263XU CN201020258263U CN201804097U CN 201804097 U CN201804097 U CN 201804097U CN 201020258263X U CN201020258263X U CN 201020258263XU CN 201020258263 U CN201020258263 U CN 201020258263U CN 201804097 U CN201804097 U CN 201804097U
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Abstract
The utility model relates to a high voltage electric energy metering device with on-line checking and testing standard, which belongs to power equipment and solves the problem that on-line testing of measurement result error of a high voltage electric energy metering device and evaluation of measurement results are difficult to carry out in electric energy metering profession for a long period of time. The utility model adopts the technical scheme that the high voltage electric energy metering device comprises a transformer on-line checking standard, special plug-in members for on-line checking and testing wire connection and an intelligent electronic electric energy meter on-site checker or a transformer on-site check meter. The device can automatically calculate and respectively display the dynamic average composition error of the measurement results of the on-line electric energy metering device and the checking results of the dynamic composition error expected value consisting of the uncertainty of the standard. The high voltage electric energy metering device provided by the utility model has the advantages that the transformer on-line checking standard has self-correcting function, and checks the improvement of labor intensity, the updating of the technical means and equipment, and the improvement of on-site checking level.
Description
Affiliated technical field
The online verification testing standard of high pressure electric power meter belongs to electric device.
Background technology
Solve the key subject that the electric energy metrical specialty is difficult to carry out on-line testing of high-voltage electric-energy meter measuring result error and evaluation examination thereof for a long time.The metering of electric energy is to realize according to stoichiometric point, metering method and the electric power meter of regulation.We are referred to as electric power meter to electric energy meter and mutual inductor and dedicated circuit thereof according to the integral body that the mode of connection and the connected mode of regulation is combined into.
Electric power meter is the legal measurement instrument that carries out fair and just clearing electric weight and correct calculation analytical technology economic target between genco, grid company and the power consumer.Therefore, how on earth are the actual accuracy of the electric power meter measurement result of on-line operation and reliability, are one of focus of paying close attention to of people all the time.
For a long time, because existing high pressure standard mutual inductor is incomplete, existing method of testing, measuring means imperfection, in addition complicated operation, carry inconvenience, reasons such as transportation difficulty etc., up to the present, can only judge the measurement result of electric power meter according to static composition error indirect under the condition of off-line or that simulation test calculates.Owing to still can not directly carry out online actual measurement and verification at random so far at the scene, so can't definitely obtain and control high pressure. UHV (ultra-high voltage) electric energy measuring apparatus is the error and the mobility scale thereof of measurement result under the service condition at the scene.Therefore, we can not accomplish to give scientific and rational evaluation and examination to the measurement result of all kinds of on-line operation measuring apparatus, guarantee its accuracy and reliability under condition of work at the scene.
Summary of the invention
The purpose of this utility model is to solve the problem that the electric energy metrical specialty is difficult to carry out on-line testing of high-voltage electric-energy meter measuring result error and evaluation examination thereof for a long time.
Technical solution of the present utility model is: the online verification testing standard of high pressure electric power meter is made up of with three parts such as wiring custom plug-in and intelligent electric minor electric energy meter field check meter or mutual inductor on site testers the online check standard of mutual inductor, online verification test.
The online check standard of mutual inductor is individual and tested metering identical and installing type standard mutual inductor on-line operation for a long time of mutual inductor electric pressure.The foundation of the online check standard of mutual inductor, can adopt following two kinds of design proposals: a kind of is uncompensated device.Outside the original Secondary Winding number of installing type mutual inductor, other sets up a special-purpose winding of 0.1 (0.05) grade of 5VA with its no-load voltage ratio coupling directly as the online check standard of mutual inductor by producer.It is applicable to 10-35kV combined type and separate type high pressure measurement mutual inductor.Another kind has compensator.By producer outside the original Secondary Winding number of installing type mutual inductor, other sets up a special-purpose winding of 0.2 grade of 10VA with its no-load voltage ratio coupling and uses as test, through transformer error automatic tracking and compensating device (patented product), it reached and keep 0.1 (0.05) accuracy rating, with this with being the online check standard of mutual inductor.It is applicable to above discrete of 66kV or combined high-voltage metering mutual inductor.More than two kinds of online check standards of mutual inductor can be divided into combined type, discrete and specialized type, public formula etc.
This device is a fully independently work system, it can be under the condition of work of the secondary circuit that stays out of on-line operation electric energy metrical measuring apparatus fully, corresponding respectively access of online verification instrument custom plug-in verified special-purpose connecting part, by pulse sampling, can calculate and demonstrate respectively on-line operation electric power meter metering result's the consecutive mean composition error and the verification result of the dynamic comprehensive error expectation value that standard uncertainty is formed thereof automatically according to measured value repeatedly.
The utility model has the advantages that:
1, the online check standard of mutual inductor has the self-correcting function;
2, it is the installing type standard mutual inductor of a different electric pressure, class of accuracy up to specification and the standard group that works online that can trace same mutual inductor transmission of quantity value benchmark;
3, adopt the online check standard of mutual inductor of transformer error automatic tracking and compensating device, its error has suitable adjustability and enough stability.After its compensator lost efficacy, just make it return to original accuracy, and to the reliability of Operation of Electric Systems without any influence;
4, because the installing type standard mutual inductor is on-line operation work, so it can carry out online verification test at random.The improvement of check labour intensity, the raising of the renewal of technological means and equipment and field test level.
Description of drawings
Fig. 1, Fig. 2, Fig. 3, Fig. 4 are this manipulated or operated apparatus
Embodiment:
The online verification testing standard of high pressure electric power meter connects formation by intelligent electric minor electric energy meter field check meter or mutual inductor on site tester, the online check standard of voltage and current mutual inductor (TVo and TAo), verification special wire plug-in unit and connecting part three parts such as (J01, J02 and Jx1, Jx2).
The function of the online verification testing standard of high pressure electric power meter
If the dynamic comprehensive error expectation value that actual measurement metering result's consecutive mean error and standard uncertainty thereof are formed surpasses when stipulating to require, then should carry out the online verification of branch to it by following method:
(1) if, then can record the consecutive mean error and the standard uncertainty thereof of on-line operation electric energy meter with online verification instrument special wire plug-in unit (Uab, Ucb, Ia, Ic) is respectively corresponding when inserting special-purpose connecting part JX2 (Uab, Ucb, Ia, Ic);
(2) if, then can record the consecutive mean resultant error and the standard uncertainty thereof of on-line operation electric energy meter and TVx secondary circuit voltage drop rate with online verification instrument special wire plug-in unit (Uab, Ucb, Ia, Ic) is respectively corresponding when inserting special-purpose connecting part JX1 (Uab, Ucb, Ia, Ic);
(3) the consecutive mean resultant error of TVx secondary circuit voltage drop rate and standard uncertainty thereof=(2)-(1);
(4)) TVx and TAx consecutive mean resultant error and standard uncertainty thereof=survey consecutive mean composition error and standard uncertainty-(1)-(3) thereof as a result.
Except having above-mentioned online verification function, also can carry out following online verification to its every group (phase) voltage transformer (VT) and secondary circuit lead pressure drop summation current transformer actual load dynamic error characteristic thereof according to need of work:
(1) if, then can record consecutive mean ratio fuab, the angular difference δ Uab of TVXUab and secondary circuit actual loading thereof with online verification instrument special wire plug-in unit (UX, U0) is respectively corresponding when inserting special-purpose connecting part JX2 (TVXUab) and J02 (TV0Uab);
If during with corresponding respectively access special-purpose connecting part JX2 (TVXUCb) of online verification instrument special wire plug-in unit (UX, U0) and J02 (TV0UCb), then can record consecutive mean ratio fucb, the angular difference δ Ucb of TVXUcb and secondary circuit actual loading thereof;
(2) if, then can record consecutive mean ratio fuab, angular difference δ Uab and the pressure drop rate rUab thereof of TVXUab and secondary circuit lead thereof with online verification instrument special wire plug-in unit (UX, U0) is respectively corresponding when inserting special-purpose connecting part JX2 (TVXUab) and JX1 (TVXUab);
If during with corresponding respectively access special-purpose connecting part JX2 (TVXUCb) of online verification instrument special wire plug-in unit (UX, U0) and J 02 (TV0UCb), then can record consecutive mean ratio fucb, angular difference δ Ucb and the pressure drop rate rUcb thereof of TVXUcb and secondary circuit actual loading thereof;
(3) if, then can record consecutive mean ratio fIa, the angular difference δ Ia of TVXIa and secondary circuit actual loading thereof with online verification instrument special wire plug-in unit (IX, I0) is respectively corresponding when inserting special-purpose connecting part JX2 (TAXIa) and J02 (TA0Ia);
If during with corresponding respectively access special-purpose connecting part JX2 (TAXIC) of online verification instrument special wire plug-in unit (IX, I0) and J02 (TA0IC), then can record consecutive mean ratio fIc, the angular difference δ Ic of TVXIc and secondary circuit actual loading thereof;
(4) if, then can record consecutive mean ratio fuab, angular difference δ Uab and the pressure drop rate rUab thereof of TV0Uab and secondary circuit lead thereof with online verification instrument special wire plug-in unit (UX, U0) is respectively corresponding when inserting special-purpose connecting part J02 (TV0Uab) and J01 (TV0Uab);
If during with corresponding respectively access special-purpose connecting part JX2 (TV0UCb) of online verification instrument special wire plug-in unit (UX, U0) and J02 (TV0UCb), then can record consecutive mean ratio fucb, angular difference δ Ucb and the pressure drop rate rUcb thereof of TVXUcb and secondary circuit actual loading thereof;
The junction style that possesses according to the electric pressure of metering points of electric energy and electric substation thereof and the pattern of the online check standard of selected mutual inductor can be divided into following four types with its online verification test macro: (1), be applicable to 35 kilovolts and following high-tension electricity customer substation; (2), be applicable to 35 kilovolts and the female electric system electric substation that joins of following band; (3), be applicable to 66 kilovolts and the female electric system electric substation that joins of above band; (4), be applicable to 66 kilovolts of electric system electric substations that do not join more than reaching with mother.
The function of online verification test macro
A, use intelligent electric minor electric energy meter field check meter, can finish following online verification test function:
(1) verifies the dynamic electric weight error (staying out of on-line operation measuring apparatus secondary circuit) of testing a whole set of high-voltage electric-energy meter;
(2) verify the dynamic electric weight error of a whole set of metering of test with high-tension current and voltage transformer (VT);
(3) verify the dynamic electric weight error of every group of high pressure measurement of test with the voltage summation current transformer;
(4) verify the dynamic electric weight error of every group of high pressure measurement of test with voltage (electric current) mutual inductor;
(5) verify the dynamic electric weight error that the every batch total amount of test causes with the voltage drop of high-voltage mutual inductor secondary circuit;
(6) verify the dynamic electric weight error of testing the on-line operation electric energy meter.
B, use intelligent electric minor mutual inductor on site check meter, can finish following online verification test function:
(1) verifies the dynamic error of every (phase) high pressure measurement of test with voltage transformer (VT);
(2) verify the dynamic error of testing every (phase) high pressure measurement Current Transformer;
(3) verify the dynamic error of testing every phase (line) voltage secondary circuit voltage drop;
How science, reasonably evaluate and examine the measurement result of on-line operation measuring apparatus, will directly influence the economical operation of electrical network and the effectiveness of operation of enterprise.But, in real work, be difficult to carry out the evaluation and the examination work of measurement result, this mainly is owing to lack corresponding field test equipment, on-line testing method and evaluation evaluation method, be difficult to measuring apparatus in service is carried out its dynamic electric weight error of online integrated testability, and the result of calculation of off-line branch method of testing can not reflect the true metering performance of electric power meter fully.So still judge the measuring apparatus measurement result so far according to the calculated value of the measurement error of a certain ingredient of electric power meter or its composition error is whether qualified.So it can not make realistic evaluation and examination to same electric power meter measurement result.
For this reason, we propose applying high voltage metering with the online check standard of mutual inductor, and (promptly basis is taken from limited quantity sample in the dynamic electric weight of measuring apparatus, the check that the measurement result of measuring apparatus is done to adopt " method of inspection is verified in sampling ".) record its dynamic electric weight error and mobility scale thereof, determine its electric weight overall uncertainty.According to the control chart that measuring apparatus electric weight error control limit and t check notion are drawn, the measurement result of measuring apparatus is decision making.In addition, we make " evaluation of electric power meter measurement result and evaluation method " in conjunction with the actual state and the relevant regulations thereof of electric company and electricity consumption enterprise: all kinds of electric power meter electric weight overall uncertainty indexs of (1) establishment; (2) rule is examined in the online verification test period and the evaluation of formulating all kinds of electric power meter measurement results.By taking above-mentioned two behaves, can evaluate and examine all kinds of on-line operation measuring apparatus measurement results.
Claims (2)
1. the online verification testing standard of high pressure electric power meter is characterized in that this device is made up of with three parts such as wiring custom plug-in and intelligent electric minor electric energy meter field check meter or mutual inductor on site testers the online check standard of mutual inductor, online verification test.
2. the online verification testing standard of high pressure as claimed in claim 1 electric power meter, the online check standard of mutual inductor that it is characterized in that this device are individual and tested metering identical and installing type standard mutual inductors on-line operation for a long time of mutual inductor electric pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020258263XU CN201804097U (en) | 2010-07-06 | 2010-07-06 | High voltage electric energy metering device with on-line checking and testing standard |
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| CN201020258263XU CN201804097U (en) | 2010-07-06 | 2010-07-06 | High voltage electric energy metering device with on-line checking and testing standard |
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| CN201804097U true CN201804097U (en) | 2011-04-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249192A (en) * | 2016-09-05 | 2016-12-21 | 中国电力科学研究院 | Detecting system is run at a kind of measuring equipment scene |
| CN107589396A (en) * | 2017-10-23 | 2018-01-16 | 国网江西省电力公司电力科学研究院 | A kind of dynamic property source tracing method based on conventional power calibration device |
| CN110764040A (en) * | 2019-10-22 | 2020-02-07 | 国网湖北省电力有限公司计量中心 | Method and system for determining error measurement function of automatic verification system |
| CN112818523A (en) * | 2021-01-20 | 2021-05-18 | 国网浙江省电力有限公司营销服务中心 | Medium-low voltage direct current metering point selection method based on fuzzy evaluation model |
-
2010
- 2010-07-06 CN CN201020258263XU patent/CN201804097U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249192A (en) * | 2016-09-05 | 2016-12-21 | 中国电力科学研究院 | Detecting system is run at a kind of measuring equipment scene |
| CN106249192B (en) * | 2016-09-05 | 2020-04-24 | 中国电力科学研究院 | Metering equipment field operation detecting system |
| CN107589396A (en) * | 2017-10-23 | 2018-01-16 | 国网江西省电力公司电力科学研究院 | A kind of dynamic property source tracing method based on conventional power calibration device |
| CN107589396B (en) * | 2017-10-23 | 2019-12-06 | 国网江西省电力公司电力科学研究院 | dynamic performance tracing method based on conventional electric energy calibrator |
| CN110764040A (en) * | 2019-10-22 | 2020-02-07 | 国网湖北省电力有限公司计量中心 | Method and system for determining error measurement function of automatic verification system |
| CN112818523A (en) * | 2021-01-20 | 2021-05-18 | 国网浙江省电力有限公司营销服务中心 | Medium-low voltage direct current metering point selection method based on fuzzy evaluation model |
| CN112818523B (en) * | 2021-01-20 | 2023-11-10 | 国网浙江省电力有限公司营销服务中心 | Medium-low voltage direct current metering point selection method based on fuzzy evaluation model |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEIHE ELECTRIC POWER BUREAU STATE GRID CORPORATION Effective date: 20121119 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121119 Address after: 164300 No. 61, Tongjiang Road, Heihe, Heilongjiang Patentee after: Zhang Dejun Patentee after: Beihe Electric Power Bureau Patentee after: State Grid Corporation of China Address before: 164300 No. 61, Tongjiang Road, Heihe, Heilongjiang Patentee before: Zhang Dejun |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |