PL399602A1 - Method for assessing the accuracy of the transformation of inductive current transformers for deformed current - Google Patents
Method for assessing the accuracy of the transformation of inductive current transformers for deformed currentInfo
- Publication number
- PL399602A1 PL399602A1 PL399602A PL39960212A PL399602A1 PL 399602 A1 PL399602 A1 PL 399602A1 PL 399602 A PL399602 A PL 399602A PL 39960212 A PL39960212 A PL 39960212A PL 399602 A1 PL399602 A1 PL 399602A1
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- PL
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- Prior art keywords
- current
- error
- transformer
- value
- distorted
- Prior art date
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- Measurement Of Current Or Voltage (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
Sposób oceny dokladnosci transformacji indukcyjnych przekladników pradowych dla pradów odksztalconych polega na tym, ze obwód pierwotny badanego przekladnika laczy sie ze zródlem pradu pierwotnego odksztalconego (5) o regulowanej wartosci skutecznej i regulowanym poziomie odksztalcenia sygnalu za posrednictwem przewodu (P1) przeprowadzonego przez otwór w szerokopasmowym przelotowym przetworniku pomiarowym prad/napiecie (2), przez który to otwór przeprowadza sie takze przewód pradu (P2) wtórnego laczacy obwód wtórny badanego przekladnika (1) z jego obciazeniem w postaci rezystora (3), wlacza sie zródlo pradu odksztalconego i mierzy wartosc skuteczna napiecia wyjsciowego szerokopasmowego przetwornika prad/napiecie, która jest proporcjonalna do wartosci skutecznej róznicy pradów pierwotnego i wtórnego czyli bledu calkowitego badanego przekladnika, nastepnie oblicza sie wartosci graniczne bledu calkowitego przekladnika dla danej klasy dokladnosci i procentowych wartosci pradu znamionowego badanego przekladnika na podstawie, zamieszczonych w obowiazujacej normie dotyczacej przekladników pradowych, wartosci granicznych bledów pradowego i katowego i porównuje ze zmierzona uprzednio wartoscia bledu calkowitego i jesli wartosc zmierzona bledu calkowitego dla kazdej procentowej wartosci pradu znamionowego badanego przekladnika nie przekracza obliczonej granicznej wartosci bledu calkowitego, przekladnik zalicza sie do klasy dokladnosci zdefiniowanej w normie tymi wartosciami granicznymi bledu pradowego i katowego.The method of assessing the accuracy of transformations of inductive current transformers for distorted currents is based on the fact that the primary circuit of the tested transformer connects to a source of distorted primary current (5) with a regulated effective value and a controlled level of signal deformation through a cable (P1) through a wide-band passage current / voltage measuring transducer (2), through which hole is also passed the secondary current cable (P2) connecting the secondary circuit of the tested transformer (1) with its load in the form of a resistor (3), the distorted current source is switched on and the effective voltage value is measured of the output broadband current / voltage converter, which is proportional to the effective value of the difference between the primary and secondary current, i.e. the total error of the tested transformer, then calculate the limit values of the total transformer error for a given accuracy class and percentage of pr the rated load of the tested transformer on the basis of the current standard for current transformers, current and angle error limits and compares with the previously measured total error value and if the measured total error value for each percentage of the rated current of the calculated calculated error does not exceed , the transformer belongs to the accuracy class defined in the standard by these current and angle error limits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL399602A PL223692B1 (en) | 2012-06-21 | 2012-06-21 | Method for assessing the accuracy of the transformation of inductive current transformers for deformed current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL399602A PL223692B1 (en) | 2012-06-21 | 2012-06-21 | Method for assessing the accuracy of the transformation of inductive current transformers for deformed current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL399602A1 true PL399602A1 (en) | 2013-12-23 |
| PL223692B1 PL223692B1 (en) | 2016-10-31 |
Family
ID=49767867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL399602A PL223692B1 (en) | 2012-06-21 | 2012-06-21 | Method for assessing the accuracy of the transformation of inductive current transformers for deformed current |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL223692B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974349A (en) * | 2016-05-04 | 2016-09-28 | 中国科学院上海应用物理研究所 | Current transformer tracking accuracy measurement method |
| CN107677980A (en) * | 2017-09-30 | 2018-02-09 | 国网四川省电力公司电力科学研究院 | A kind of power distribution network transformer metering performance integration detection platform and method |
| CN107942277A (en) * | 2017-11-16 | 2018-04-20 | 国网四川省电力公司电力科学研究院 | A kind of power distribution network transformer error detection connection circuit and switching device |
| CN108710098A (en) * | 2018-05-18 | 2018-10-26 | 深圳供电局有限公司 | Current transformer secondary circuit load detection method |
| CN109541516A (en) * | 2018-11-20 | 2019-03-29 | 国家电网有限公司 | A kind of voltage transformer wideband error measurement method |
-
2012
- 2012-06-21 PL PL399602A patent/PL223692B1/en unknown
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974349A (en) * | 2016-05-04 | 2016-09-28 | 中国科学院上海应用物理研究所 | Current transformer tracking accuracy measurement method |
| CN105974349B (en) * | 2016-05-04 | 2018-06-08 | 中国科学院上海应用物理研究所 | A kind of measuring method of current transformer tracking accuracy |
| CN107677980A (en) * | 2017-09-30 | 2018-02-09 | 国网四川省电力公司电力科学研究院 | A kind of power distribution network transformer metering performance integration detection platform and method |
| CN107677980B (en) * | 2017-09-30 | 2019-12-10 | 国网四川省电力公司电力科学研究院 | Integrated detection platform and method for metering performance of mutual inductor of power distribution network |
| CN107942277A (en) * | 2017-11-16 | 2018-04-20 | 国网四川省电力公司电力科学研究院 | A kind of power distribution network transformer error detection connection circuit and switching device |
| CN108710098A (en) * | 2018-05-18 | 2018-10-26 | 深圳供电局有限公司 | Current transformer secondary circuit load detection method |
| CN108710098B (en) * | 2018-05-18 | 2021-02-19 | 深圳供电局有限公司 | Current transformer secondary circuit load detection method |
| CN109541516A (en) * | 2018-11-20 | 2019-03-29 | 国家电网有限公司 | A kind of voltage transformer wideband error measurement method |
| CN109541516B (en) * | 2018-11-20 | 2022-04-15 | 国家电网有限公司 | Voltage transformer broadband error measurement method |
Also Published As
| Publication number | Publication date |
|---|---|
| PL223692B1 (en) | 2016-10-31 |
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