CN203930043U - A kind of digitalized electric energy measuring apparatus correcting device - Google Patents
A kind of digitalized electric energy measuring apparatus correcting device Download PDFInfo
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- CN203930043U CN203930043U CN201420353916.0U CN201420353916U CN203930043U CN 203930043 U CN203930043 U CN 203930043U CN 201420353916 U CN201420353916 U CN 201420353916U CN 203930043 U CN203930043 U CN 203930043U
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Abstract
The utility model provides a kind of digitalized electric energy measuring apparatus correcting device, and described equipment comprises pressure regulator 1, phase shift power supply 2, pressure regulator 3, stepup transformer 4, current lifting device 5, Error Calculator 9, clock synchronization device 14, standard electric energy metering module and digital electric energy metering module; Described standard electric energy metering module comprises standard current transformer 6, standard potential transformer 7 and standard electric energy meter 8; Described digital electric energy metering module comprises electronic current mutual inductor 10, electronic type voltage transformer 11, merge cells 12 and digitalized electrical energy meter 13; Described Error Calculator 9 is connected with digital electric energy metering module with standard electric energy metering module respectively; Described merge cells 12 is connected with clock synchronization device 14.The utility model utilizes the mode of whole verification to measure the composition error of transformer station's digitalized electric energy measuring apparatus, has realized the integral body of digitalized electric energy measuring apparatus and has traced to the source.
Description
Technical field
The utility model belongs to a kind of electric power meter correcting device, specifically relates to a kind of digitalized electric energy measuring apparatus correcting device.
Background technology
Along with the raising of progress, science and technology and the level of IT application and the becoming increasingly conspicuous of global energy and environmental problem of expanding economy, society, power network development faces new problem and new challenge.The requirement of development intelligent grid, adaptation Sustainable Development in Future, has become the common choice that global various countries respond actively Challenges for Future.Building and adapt to following intelligent grid needs, meet the intelligent substation of intelligent grid demand, has been the important guarantee of intelligent grid construction object.
Intelligent substation is along with the proposition of intelligent grid concept proposes, refer to: adopt equipment and design reliable, economical, integrated, environmental protection, with the information digitalization of entirely standing, communications platform networking, information sharing standardization, system function integration, structural design densification, high-tension apparatus intellectuality and running status visualization technology, be characterized as basic demand, can support electrical network on-line analysis and decision-making, and then improve the transformer station of new generation of whole operation of power networks reliability and economy.
Electric energy metered system is the important component part of transformer station.Intelligent substation digitalized electric energy measuring apparatus is comprised of electronic mutual inductor, merge cells and digitalized electrical energy meter, and great changes have occurred relatively traditional transformer station metering system.At digital transformer substation and intelligent substation first stage of construction, owing to lacking the means of effectively tracing to the source, digitalized electric energy measuring apparatus unanimously cannot become legal measurement instrument, can only be for grid company internal examination, and cannot be for clearing.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of digitalized electric energy measuring apparatus correcting device, can calibrate the digitalized electric energy measuring apparatus being formed by electronic mutual inductor, merge cells, digitalized electrical energy meter (or other have the instrument and meter of electric energy metrical function), meanwhile, calibration value can be traceable to the highest electric energy standard of country.Calibration and the problem of tracing to the source of intelligent substation digitalized electric energy measuring apparatus have been solved.
The purpose of this utility model is to adopt following technical proposals to realize:
A kind of digitalized electric energy measuring apparatus correcting device, its improvements are, described equipment comprises pressure regulator 1, phase shift power supply 2, pressure regulator 3, stepup transformer 4, current lifting device 5, Error Calculator 9, clock synchronization device 14, standard electric energy metering module and digital electric energy metering module;
Described standard electric energy metering module comprises standard current transformer 6, standard potential transformer 7 and standard electric energy meter 8;
Described digital electric energy metering module comprises electronic current mutual inductor 10, electronic type voltage transformer 11, merge cells 12 and digitalized electrical energy meter 13;
Described Error Calculator 9 is connected with digital electric energy metering module with standard electric energy metering module respectively;
Described merge cells 12 is connected with clock synchronization device 14.
Preferably, described pressure regulator 1, stepup transformer 4, standard potential transformer 6, standard electric energy meter 8 and Error Calculator 9 are connected successively.
Preferably, described phase shift power supply 2, pressure regulator 3, current lifting device 5, standard current transformer 7, standard electric energy meter 8 and Error Calculator 9 are connected successively.
Preferably, described pressure regulator 1, stepup transformer 4, electronic type voltage transformer 10, merge cells 12, digitalized electrical energy meter 13 and Error Calculator 9 are connected successively.
Preferably, described phase shift power supply 2, pressure regulator 3, current lifting device 5, standard current transformer 7, electronic current mutual inductor 11, merge cells 12, digitalized electrical energy meter 13 are connected successively with Error Calculator.
Preferably, described pressure regulator 1 is by stepup transformer 4 access standard potential transformer 6 in parallel and electronic type voltage transformer 7.
Preferably, described phase shift power supply 2 is through pressure regulator 3 and current lifting device 5 series connection access standard current transformer 7 and electronic current mutual inductors 11.
Compared with the prior art, the beneficial effects of the utility model are:
The utility model utilizes the mode of whole verification to measure the composition error of transformer station's digitalized electric energy measuring apparatus, has realized the integral body of digitalized electric energy measuring apparatus and has traced to the source.
The intelligent substation digitalized electric energy measuring apparatus of utilizing the utility model to calibrate to be comprised of electronic mutual inductor, merge cells, digitalized electrical energy meter, calibration value can be traceable to the highest electric energy standard of country.
The utility model standard potential transformer accurately carries out ratio by high voltage to be dwindled, and is convenient to measure, and no-load voltage ratio accuracy is less than 1 * 10
-4.
The utility model standard current transformer accurately carries out ratio by large electric current to be dwindled, and is convenient to measure, and no-load voltage ratio accuracy is less than 1 * 10
-4.
The utility model standard electric energy meter is pin-point accuracy standard electric energy meter, and accuracy of measurement is less than 1 * 10
-4.
Accompanying drawing explanation
A kind of digitalized electric energy measuring apparatus correcting device principle assumption diagram that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
A digitalized electric energy measuring apparatus correcting device, it provides a kind of calibration intelligent substation digitalized electric energy measuring apparatus.The utility model is comprised of pressure regulator, phase shift power supply, standard potential transformer, standard current transformer, standard electric energy meter, Error Calculator and a set of digitalized electric energy measuring apparatus.
Phase shift power supply carries out phase shift by the voltage of voltage circuit pressure regulator and current return pressure regulator, according to test point phase place, produce the alternating voltage of two-phase out of phase, voltage circuit input voltage is inputted respectively electronic type voltage transformer PTx and the standard potential transformer PTn of digitalized electric energy measuring apparatus by pressure regulator and high voltage of stepup transformer output; Current return input voltage exports once by pressure regulator and current lifting device electronic current mutual inductor CTx and the standard current transformer CTn that large electric current is inputted respectively digitalized electric energy measuring apparatus.
Electronic current mutual inductor CTx, electronic type voltage transformer PTx, merge cells and digitalized electrical energy meter form digital electric power meter.For digital output type electric mutual inductor, electronic current (voltage) mutual inductor changes into digital signal by primary current (voltage) signal and delivers to merge cells by optical fiber transmission, and merge cells carries out interpolation by the digital sample value signal of voltage transformer (VT), current transformer input and synchronously packs.For simulation output type electronic mutual inductor, electronic current (voltage) mutual inductor changes into the weak voltage signal of secondary by primary current (voltage) signal and is connected to merge cells by shielded cable, and merge cells carries out synchronized sampling by the weak signal of input.Merge cells according to IEC61850-9-2 standard, is assembled into digitized current and voltage signals digital frame and sends to digitalized electrical energy meter.Digitalized electrical energy meter extracts each phase current voltage signal and calculates energy information from digital frame, sends low-frequency electrical energy pulse simultaneously.
Wherein, merge cells refers to DL/T282-2012 < < merge cells technical conditions > >;
Error Calculator, refers to the measurement of DL/T731-2000 < < electric energy meter and is ripe prior art with Error Calculator > >.
By traditional standard current transformer, voltage transformer (VT) and standard electric energy meter, form standard electric power meter on the other hand.The secondary singal of traditional standard electric energy meter direct measurement standard Current Transmit n and standard potential transformer PTn output obtains standard electric energy, sends high-frequency electrical energy pulse simultaneously.The high-frequency impulse that the low-frequency pulse that digitalized electrical energy meter sends and standard electric energy meter send is error originated from input counter simultaneously, Error Calculator is according to the meter constant of standard electric energy meter and measured number electric energy meter, respectively input low-frequency pulse and high-frequency impulse are converted into the electric energy value of response, then electric energy value is carried out to error calculating, thereby obtain the whole error in dipping of digitalized electric energy measuring apparatus.
The intelligent substation digitalized electric energy measuring apparatus that the utility model can piece calibration be comprised of electronic mutual inductor, merge cells, digitalized electrical energy meter, calibration range (0～220kV, 0.1A～2000A), calibration uncertainty 0.05% (k=2).Calibration result can be traceable to national standard.
Embodiment
A kind of digitalized electric energy measuring apparatus of the utility model correcting device, comprises pressure regulator 1, phase shift power supply 2, pressure regulator 3, stepup transformer 4, current lifting device 5, standard potential transformer 6, standard current transformer 7, standard electric energy meter 8, Error Calculator 9, electronic type voltage transformer 10, electronic current mutual inductor 11, merge cells 12, digitalized electrical energy meter 13, clock synchronization device 14.
Wherein, pressure regulator 1 and phase shift power supply 2 are got the two-way voltage signal with certain phase angle that civil power produces, and the voltage that pressure regulator 1 produces requires to produce road high voltage signal access in parallel standard potential transformer 6 and an electronic type voltage transformer 7 by stepup transformer 4 according to test point;
The voltage signal that phase shift power supply 2 produces produces through pressure regulator 3 and current lifting device large current signal series connection access standard current transformer 7 and the electronic current mutual inductor 11 that meets test point requirement;
The output current signal of standard potential transformer 6 and standard potential transformer flows into standard electric energy meter 8 and measures;
The output signal access merge cells 12 of electronic type voltage transformer 10 and electronic current mutual inductor 11;
Clock synchronization device 14 is combined unit to carry out synchronously;
Merge cells 12 output input signal input digitalized electrical energy meters 13;
The electrical energy pulse output of digitalized electrical energy meter 13 and the high-frequency electrical energy pulse output signals error originated from input counter 9 of standard electric energy meter 8, Error Calculator records error and is test result.
The digitized measurement device is calibrated as a whole, directly recorded the composition error of package unit.
Between stepup transformer and current lifting device, by phase shift power supply, carry out phase adjusted.
The high-voltage great-current signal that stepup transformer and current lifting device produce becomes the little current signal input of low pressure standard electric energy meter through standard mutual inductor and measures.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement embodiment of the present utility model, and do not depart from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (7)
1. a digitalized electric energy measuring apparatus correcting device, it is characterized in that, described equipment comprises pressure regulator (1), phase shift power supply (2), pressure regulator (3), stepup transformer (4), current lifting device (5), Error Calculator (9), clock synchronization device (14), standard electric energy metering module and digital electric energy metering module;
Described standard electric energy metering module comprises standard current transformer (6), standard potential transformer (7) and standard electric energy meter (8);
Described digital electric energy metering module comprises electronic current mutual inductor (10), electronic type voltage transformer (11), merge cells (12) and digitalized electrical energy meter (13);
Described Error Calculator (9) is connected with digital electric energy metering module with standard electric energy metering module respectively;
Described merge cells (12) is connected with clock synchronization device (14).
2. a kind of digitalized electric energy measuring apparatus correcting device as claimed in claim 1, is characterized in that, described pressure regulator (1), stepup transformer (4), standard potential transformer (6), standard electric energy meter (8) and Error Calculator (9) are connected successively.
3. a kind of digitalized electric energy measuring apparatus correcting device as claimed in claim 1, it is characterized in that, described phase shift power supply (2), pressure regulator (3), current lifting device (5), standard current transformer (7), standard electric energy meter (8) and Error Calculator (9) are connected successively.
4. a kind of digitalized electric energy measuring apparatus correcting device as claimed in claim 1, it is characterized in that, described pressure regulator (1), stepup transformer (4), electronic type voltage transformer (10), merge cells (12), digitalized electrical energy meter (13) and Error Calculator (9) are connected successively.
5. a kind of digitalized electric energy measuring apparatus correcting device as claimed in claim 1, it is characterized in that, described phase shift power supply (2), pressure regulator (3), current lifting device (5), standard current transformer (7), electronic current mutual inductor (11), merge cells (12), digitalized electrical energy meter (13) are connected successively with Error Calculator.
6. a kind of digitalized electric energy measuring apparatus correcting device as claimed in claim 1, is characterized in that, described pressure regulator (1) is by stepup transformer (4) access in parallel standard potential transformer (6) and electronic type voltage transformer (7).
7. a kind of digitalized electric energy measuring apparatus correcting device as claimed in claim 1, is characterized in that, described phase shift power supply (2) is through pressure regulator (3) and current lifting device (5) series connection access standard current transformer (7) and electronic current mutual inductor (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420353916.0U CN203930043U (en) | 2014-06-27 | 2014-06-27 | A kind of digitalized electric energy measuring apparatus correcting device |
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| CN201420353916.0U CN203930043U (en) | 2014-06-27 | 2014-06-27 | A kind of digitalized electric energy measuring apparatus correcting device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062625A (en) * | 2014-06-27 | 2014-09-24 | 国家电网公司 | Digital electric energy metering device calibration equipment and method thereof |
| CN104535957A (en) * | 2014-12-08 | 2015-04-22 | 云南电网公司电力科学研究院 | Measuring accuracy comparison device of intelligent substation |
| CN104914405A (en) * | 2015-06-26 | 2015-09-16 | 国家电网公司 | Detection method and device |
| CN106124903A (en) * | 2016-07-19 | 2016-11-16 | 卢敏 | A kind of extra-high voltage direct-current deicing device up-flow pressure build-up test system |
| CN106199100A (en) * | 2016-08-12 | 2016-12-07 | 陈劲游 | Building block type intelligent electric energy meter |
| CN107219492A (en) * | 2017-04-24 | 2017-09-29 | 国网浙江省电力公司电力科学研究院 | Medium voltage network electric energy metrical high pressure integration semi-physical simulation device |
| CN107329104A (en) * | 2017-07-10 | 2017-11-07 | 广西电网有限责任公司电力科学研究院 | A kind of electronic mutual inductor magnitude tracing method and system of meter and composition error |
| CN107462858A (en) * | 2017-06-20 | 2017-12-12 | 中国电力科学研究院 | A kind of voltage transformer magnitude tracing method and device |
-
2014
- 2014-06-27 CN CN201420353916.0U patent/CN203930043U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062625A (en) * | 2014-06-27 | 2014-09-24 | 国家电网公司 | Digital electric energy metering device calibration equipment and method thereof |
| CN104535957A (en) * | 2014-12-08 | 2015-04-22 | 云南电网公司电力科学研究院 | Measuring accuracy comparison device of intelligent substation |
| CN104914405A (en) * | 2015-06-26 | 2015-09-16 | 国家电网公司 | Detection method and device |
| CN106124903A (en) * | 2016-07-19 | 2016-11-16 | 卢敏 | A kind of extra-high voltage direct-current deicing device up-flow pressure build-up test system |
| CN106199100A (en) * | 2016-08-12 | 2016-12-07 | 陈劲游 | Building block type intelligent electric energy meter |
| CN107219492A (en) * | 2017-04-24 | 2017-09-29 | 国网浙江省电力公司电力科学研究院 | Medium voltage network electric energy metrical high pressure integration semi-physical simulation device |
| CN107462858A (en) * | 2017-06-20 | 2017-12-12 | 中国电力科学研究院 | A kind of voltage transformer magnitude tracing method and device |
| CN107329104A (en) * | 2017-07-10 | 2017-11-07 | 广西电网有限责任公司电力科学研究院 | A kind of electronic mutual inductor magnitude tracing method and system of meter and composition error |
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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: CHINA ELECTRIC POWER RESEARCH INSTITUTE STATE GRID Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20150113 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150113 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Patentee after: STATE GRID ZHEJIANG ELECTRIC POWER Co. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: China Electric Power Research Institute |
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| CX01 | Expiry of patent term |
Granted publication date: 20141105 |