CN101604009A - Method for verifying universal electronic type mutual inductor - Google Patents
Method for verifying universal electronic type mutual inductor Download PDFInfo
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- CN101604009A CN101604009A CNA2009100698309A CN200910069830A CN101604009A CN 101604009 A CN101604009 A CN 101604009A CN A2009100698309 A CNA2009100698309 A CN A2009100698309A CN 200910069830 A CN200910069830 A CN 200910069830A CN 101604009 A CN101604009 A CN 101604009A
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- mutual inductor
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- sampled value
- merge cells
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012952 Resampling Methods 0.000 claims abstract description 6
- 238000002474 experimental method Methods 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims description 8
- 239000013307 optical fiber Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The present invention relates to a kind of method for verifying universal electronic type mutual inductor, comprise the step of using standard up-flow/stepup transformer that the experiment source is provided as standard mutual inductor and tested electronic mutual inductor, its innovation part is: comprise by tester the sampled value of merge cells transmission is compared with the true value of standard mutual inductor output through resampling after, draw the step that tested electronic mutual inductor passes through error behind the merge cells.Method of calibration of the present invention does not adopt the synchronizing pulse mode, and is more consistent with on-the-spot service condition, can be more accurate, verification goes out to insert the error of the sampled value of digitizing secondary device truly; And this method of calibration adopts IEC61850-9-1 or IEC61850-9-2 standard agreement, therefore can carry out verification to the electronic mutual inductor and the MU of any producer, has stronger versatility.
Description
Technical field
The invention belongs to electric parameter measurement field, particularly method for verifying universal electronic type mutual inductor in the electric system.
Background technology
Along with the construction of digital transformer substation, novel electronic formula mutual inductor has obtained widespread use, and the former method for testing precision that is useful on traditional mutual inductor has not been suitable for the test electronic mutual inductor.At verification, main following points difference: 1. compare the sampling of traditional mutual inductor, there is certain time-delay in tester to the digital sample of electronic mutual inductor; 2. the electronic mutual inductor collection realizes by the far-end collecting unit that with numeral output its output protocol is privately owned; 3. the sampled value of digitizing secondary device is by the collection of far-end collecting unit, and via MU (merge cells) distribution transmission, then can there be error in sampled value in via the transmission course of MU.Have only to solve these difference well, could carry out verification to electronic mutual inductor exactly.
The verification mode of existing electronic mutual inductor is to utilize (electric current) device that boosts to provide trial voltage (electric current) amount to standard mutual inductor and tested electronic mutual inductor primary side simultaneously, synchronizing pulse by tester then, the tested electronic mutual inductor sampled value that tester is gathered is synchronous with the sampled value of exporting with the secondary side of standard mutual inductor, calculates the output error of tested electronic mutual inductor at last.There is following shortcoming in it: 1. tester needs synchronizing pulse when verification, but under most engineering applied environment, is unsuitable for using the synchronizing pulse mode; To electronic mutual inductor sampling synchronously, the output of the sampled value of electronic mutual inductor far-end acquisition module, relate to proprietary protocol, cause versatility poor; 3. this method can only verification go out the mutual inductor error of back synchronously itself, has but ignored the error of sampled value through being produced behind the MU.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of method for verifying universal electronic type mutual inductor is provided, can be widely used in the verification of electronic mutual inductor in the digital transformer substation, and check results is accurately reliable.
The present invention solves its technical matters and is achieved through the following technical solutions:
A kind of method for verifying universal electronic type mutual inductor comprises and uses standard up-flow/stepup transformer to provide the step in experiment source as standard mutual inductor and tested electronic mutual inductor, it is characterized in that: further comprising the steps of:
(1). the secondary side winding output terminal of standard mutual inductor is connected to the AC sampling plate Wiring port of tester, obtains the standard mutual inductor true value by tester A/D sampling;
(2). the merge cells output terminal that will be connected with tested electronic mutual inductor accesses to tester optical fiber network interface by optical fiber;
(3). tester receives the sampled value by merge cells output, and writes down this sampled value arrival check meter time, and this sampled value is the data message that meets IEC-61850-9-1 or IEC-61850-9-2 agreement;
(4). tester resamples to the sampled value that receives according to tested electronic mutual inductor delay parameter, obtains the data that resample;
(5). tester compares resampling data and the resultant true value of step (1), draws tested electronic mutual inductor by the error behind the merge cells;
(6). the tester record also shows check results.
Advantage of the present invention and beneficial effect are:
This method for verifying universal electronic type mutual inductor, be that sampled value with merge cells transmission compares with true value that standard mutual inductor is exported through resampling after, and do not adopt the synchronizing pulse mode, more consistent with on-the-spot service condition, can be more accurate, verification goes out to insert the error of the sampled value of digitizing secondary device truly; And, adopt IEC61850-9-1 or IEC61850-9-2 standard agreement, can carry out verification to the electronic mutual inductor and the merge cells of any producer, have stronger versatility.
Description of drawings
Fig. 1 is the structural representation of the employed check system of method of calibration of the present invention;
Fig. 2 is the workflow diagram of tester among the present invention.
Embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of method for verifying universal electronic type mutual inductor comprises the step of using standard up-flow/stepup transformer that the experiment source is provided as standard mutual inductor and tested electronic mutual inductor.
The innovation part of this method of calibration is further comprising the steps of:
(1). the secondary side winding output terminal of standard mutual inductor is connected to the AC sampling plate Wiring port of tester, and tester is realized acceptance, conversion to standard mutual inductor secondary analog quantity obtaining the standard mutual inductor true value by the A/D sampling unit.
(2). the merge cells output terminal that will be connected with tested electronic mutual inductor accesses to tester optical fiber network interface by optical fiber.
(3). tester receives the sampled value of the secondary digital quantity of being exported by merge cells by its MU Data Receiving unit, and stamp the timestamp that this sampled value arrives, write down this sampled value and arrive the check meter time, to put into sampled value, writing time buffer area, this sampled value is the data message that meets IEC-61850-9-1 or IEC-61850-9-2 agreement.
(4). tester carries out time bias by its data resampling unit according to tested electronic mutual inductor delay parameter, and the sampled value that receives is resampled, and obtains the data that resample.
(5). tester compares resampling data and the resultant true value of step (1) that step (4) obtains by its data comparing unit, the electric parameter of tested current transformer be can draw, ratio error, phase angle error, frequency, harmonic wave comprised by error characteristics behind the merge cells.
(6). tester writes down check results and shows check results by display unit.
Claims (1)
1, a kind of method for verifying universal electronic type mutual inductor comprises and uses standard up-flow/stepup transformer to provide the step in experiment source as standard mutual inductor and tested electronic mutual inductor, it is characterized in that: further comprising the steps of:
(1). the secondary side winding output terminal of standard mutual inductor is connected to the AC sampling plate Wiring port of tester, obtains the standard mutual inductor true value by tester A/D sampling;
(2). the merge cells output terminal that will be connected with tested electronic mutual inductor accesses to tester optical fiber network interface by optical fiber;
(3). tester receives the sampled value by merge cells output, and writes down this sampled value arrival check meter time, and this sampled value is the data message that meets IEC-61850-9-1 or IEC-61850-9-2 agreement;
(4). tester resamples to the sampled value that receives according to tested electronic mutual inductor delay parameter, obtains the data that resample;
(5). tester compares resampling data and the resultant true value of step (1), draws tested electronic mutual inductor by the error behind the merge cells;
(6). the tester record also shows check results.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100698309A CN101604009A (en) | 2009-07-22 | 2009-07-22 | Method for verifying universal electronic type mutual inductor |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100698309A CN101604009A (en) | 2009-07-22 | 2009-07-22 | Method for verifying universal electronic type mutual inductor |
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| CN101604009A true CN101604009A (en) | 2009-12-16 |
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| CNA2009100698309A Pending CN101604009A (en) | 2009-07-22 | 2009-07-22 | Method for verifying universal electronic type mutual inductor |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806876A (en) * | 2010-05-10 | 2010-08-18 | 华中科技大学 | Electronic type transformer checking system |
| CN102053235A (en) * | 2010-10-21 | 2011-05-11 | 中国南方电网有限责任公司超高压输电公司柳州局 | On-site steady-state accuracy verification system for electronic current transformer and verification method thereof |
| CN102073028A (en) * | 2010-10-21 | 2011-05-25 | 中国南方电网有限责任公司超高压输电公司柳州局 | Onsite stable state precision calibration system of electronic voltage transformer and calibration method thereof |
| CN102435974A (en) * | 2011-06-16 | 2012-05-02 | 江苏靖江互感器厂有限公司 | Novel high-efficient portable electronic transformer inspection instrument for intelligent power grid |
| CN102662152A (en) * | 2012-05-15 | 2012-09-12 | 河南省电力公司济源供电公司 | Electronic type mutual inductor as well as system and method for verifying merging unit |
| CN103064051A (en) * | 2011-10-18 | 2013-04-24 | 熊江咏 | Multifunctional electronic transformer calibrator |
| CN103076515A (en) * | 2012-12-28 | 2013-05-01 | 中国电力科学研究院 | Merging unit integral detection and evaluation system |
| CN103293504A (en) * | 2013-06-04 | 2013-09-11 | 国家电网公司 | On-site current transformer comprehensive detector and testing method thereof |
| CN104316888A (en) * | 2014-05-28 | 2015-01-28 | 许继电气股份有限公司 | SV-sampling-signal-based partial discharge monitoring internal synchronization reference correction method |
| CN105842652A (en) * | 2016-06-01 | 2016-08-10 | 国网重庆市电力公司电力科学研究院 | Digital electric energy meter online checking method |
| CN106054102A (en) * | 2016-08-11 | 2016-10-26 | 国网浙江省电力公司电力科学研究院 | Current-transformer harmonic wave error measurement system |
| CN108680886A (en) * | 2018-05-24 | 2018-10-19 | 安徽国电京润电力科技有限公司 | Integral electrical voltage transformer automated calibration equipment |
| CN110018435A (en) * | 2019-02-21 | 2019-07-16 | 国网山东省电力公司临沂供电公司 | Electronic mutual inductor calibration system and calibration method |
| CN111766555A (en) * | 2020-05-09 | 2020-10-13 | 浙江武义电气安装工程有限公司 | Data synchronization method for distribution network CT error checking process |
| CN111766556A (en) * | 2020-05-09 | 2020-10-13 | 浙江武义电气安装工程有限公司 | Distribution network CT (computed tomography) calibration method |
-
2009
- 2009-07-22 CN CNA2009100698309A patent/CN101604009A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806876A (en) * | 2010-05-10 | 2010-08-18 | 华中科技大学 | Electronic type transformer checking system |
| CN102053235A (en) * | 2010-10-21 | 2011-05-11 | 中国南方电网有限责任公司超高压输电公司柳州局 | On-site steady-state accuracy verification system for electronic current transformer and verification method thereof |
| CN102073028A (en) * | 2010-10-21 | 2011-05-25 | 中国南方电网有限责任公司超高压输电公司柳州局 | Onsite stable state precision calibration system of electronic voltage transformer and calibration method thereof |
| CN102435974A (en) * | 2011-06-16 | 2012-05-02 | 江苏靖江互感器厂有限公司 | Novel high-efficient portable electronic transformer inspection instrument for intelligent power grid |
| CN103064051A (en) * | 2011-10-18 | 2013-04-24 | 熊江咏 | Multifunctional electronic transformer calibrator |
| CN102662152A (en) * | 2012-05-15 | 2012-09-12 | 河南省电力公司济源供电公司 | Electronic type mutual inductor as well as system and method for verifying merging unit |
| CN103076515A (en) * | 2012-12-28 | 2013-05-01 | 中国电力科学研究院 | Merging unit integral detection and evaluation system |
| CN103293504B (en) * | 2013-06-04 | 2016-01-20 | 国家电网公司 | The method of testing of on-site current transformer comprehensive detector |
| CN103293504A (en) * | 2013-06-04 | 2013-09-11 | 国家电网公司 | On-site current transformer comprehensive detector and testing method thereof |
| CN104316888A (en) * | 2014-05-28 | 2015-01-28 | 许继电气股份有限公司 | SV-sampling-signal-based partial discharge monitoring internal synchronization reference correction method |
| CN105842652A (en) * | 2016-06-01 | 2016-08-10 | 国网重庆市电力公司电力科学研究院 | Digital electric energy meter online checking method |
| CN105842652B (en) * | 2016-06-01 | 2018-12-25 | 国网重庆市电力公司电力科学研究院 | A kind of digital electricity meter on-line testing method |
| CN106054102A (en) * | 2016-08-11 | 2016-10-26 | 国网浙江省电力公司电力科学研究院 | Current-transformer harmonic wave error measurement system |
| CN106054102B (en) * | 2016-08-11 | 2019-10-11 | 国网浙江省电力公司电力科学研究院 | A kind of current transformer harmonic error measuring system |
| CN108680886A (en) * | 2018-05-24 | 2018-10-19 | 安徽国电京润电力科技有限公司 | Integral electrical voltage transformer automated calibration equipment |
| CN110018435A (en) * | 2019-02-21 | 2019-07-16 | 国网山东省电力公司临沂供电公司 | Electronic mutual inductor calibration system and calibration method |
| CN111766555A (en) * | 2020-05-09 | 2020-10-13 | 浙江武义电气安装工程有限公司 | Data synchronization method for distribution network CT error checking process |
| CN111766556A (en) * | 2020-05-09 | 2020-10-13 | 浙江武义电气安装工程有限公司 | Distribution network CT (computed tomography) calibration method |
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Owner name: JIANGSU WISCOM TECHNOLOGY CO., LTD. STATE GRID COR Free format text: FORMER OWNER: JIANGSU WISCOM TECHNOLOGY CO., LTD. Effective date: 20121127 |
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Effective date of registration: 20121127 Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant after: Tianjin Electric Power Corp. Applicant after: Jinzhi Science and Technology Co., Ltd., Jiangsu Applicant after: State Grid Corporation of China Address before: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant before: Tianjin Electric Power Corp. Applicant before: Jinzhi Science and Technology Co., Ltd., Jiangsu |
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Application publication date: 20091216 |