CN101207272A - Turn space protection for reactor sequence component direction - Google Patents
Turn space protection for reactor sequence component direction Download PDFInfo
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- CN101207272A CN101207272A CNA2007101900055A CN200710190005A CN101207272A CN 101207272 A CN101207272 A CN 101207272A CN A2007101900055 A CNA2007101900055 A CN A2007101900055A CN 200710190005 A CN200710190005 A CN 200710190005A CN 101207272 A CN101207272 A CN 101207272A
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Abstract
The invention relates to an interturn protection of an electric reactor in the sequence component direction. The invention is characterized in that the invention comprises the steps that firstly, the electric reactor protects and collects the magnitude and direction of the zero sequence current magnitude, the negative sequence current magnitude and the positive sequence current magnitude; secondly, when the zero sequence current magnitude, the negative sequence current magnitude and the positive sequence current magnitude are larger, and the directions are consistent, the interturn fault of the electric reactor is judged; thirdly, when the zero sequence current magnitude, the negative sequence current magnitude and the positive sequence current magnitude are larger, and the directions of the zero sequence current magnitude and the negative sequence current magnitude is not consistent with the direction of the positive sequence current magnitude, the occurrence of the extra-area monophase grounding fault of the electric power system is judged. The correct operation of the relay protection in the invention is obvious when the intra-area interturn short circuit of the electric reactor occurs. The invention can correctly judge whether the electric reactor occurs the interturn fault only by utilizing the electric current characteristic quantity of the electric power system, can avoid the interturn protection when the electric reactor occurs the TV broken wire, at the moment, the protection still can perform the function, and the reliability of the protection is enhanced.
Description
Technical field
The present invention relates to a kind of novel reactor interturn protection principle, specifically relate to a kind of interturn protection that utilizes the electric current input variable merely that is mainly used in digital reactance device protective device.Belong to the power system automation technology field.
Background technology
In order to limit the capacitive effect of overvoltage in the electric power system, balanced circuit, generally in the system of long transmission line and voltage levels, dispose reactor, reactor is very important equipment in the voltage levels electric power system.Therefore reactor protection also is very important, and it directly influences the stability and the fail safe of electric power system.In reactor protection, interturn protection can guarantee that reactor electric power system when turn-to-turn fault takes place can excise reactor rapidly, guarantees the reliable and secure operation of electric power system.
In the electric power system during reactor generation turn-to-turn fault, because its not poor stream, so differential protection can not effectively be protected.Zero sequence power direction or zero sequence impedance direction are much adopted in reactor interturn protection at present.This type of protection needs applied current amount and voltage simultaneously, and is bigger to the dependence of voltage, but above principle all can lose efficacy when the TV broken string takes place in the electric power system.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of influence that can reduce voltage to the reactor interturn protection, make the reactor interturn protection become pure current protection, make it more reliable turn space protection for reactor sequence component direction.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of turn space protection for reactor sequence component direction comprises:
(1), reactor protection is gathered the size and Orientation of zero-sequence current amount, negative-sequence current amount, forward-order current amount;
(2), zero-sequence current amount, negative-sequence current amount, forward-order current amount be all bigger, and direction is judged as inductor turn-to-turn fault when consistent;
(3), zero-sequence current amount, negative-sequence current amount, forward-order current amount be all bigger, and the direction of the direction of zero-sequence current amount, negative-sequence current amount and forward-order current amount is judged as the outer single phase ground fault of electric power system generating region when inconsistent.
The invention has the beneficial effects as follows: the present invention is in the reactor generating region during turn-to-turn short circuit, and the relaying protection correct operation is apparent in view.This invention only utilizes the current characteristic amount of electric power system just can whether turn-to-turn fault take place the correct decision reactor, can avoid there is not interturn protection when the TV broken string takes place reactor, and this protection this moment still can be worked, and has improved the reliability of protection.
Description of drawings
Fig. 1 is the magnitude of current schematic diagram when inductor turn-to-turn fault takes place;
Fig. 2 is the magnitude of current schematic diagram when single phase ground fault outside the electric power system district takes place.
Embodiment
Below in conjunction with the present invention being done concrete being described below:
Fig. 1 is the magnitude of current schematic diagram when inductor turn-to-turn fault takes place; Fig. 2 is the magnitude of current schematic diagram when single phase ground fault outside the electric power system district takes place.
When electric power system normally moved, zero-sequence current amount and negative-sequence current amount that reactor protection collects were all very little, and the forward-order current amount is a normal value.When reactor generation turn-to-turn fault, it is all bigger that reactor protection collects zero-sequence current amount, forward-order current amount and negative-sequence current amount, but zero-sequence current amount, forward-order current amount are consistent with the direction of negative-sequence current amount.As shown in Figure 1, I0 is the zero-sequence current amount among the figure, and I1 is the forward-order current amount, and I2 is the negative-sequence current amount.
When outside the electric power system generating region during single phase ground fault, it is all bigger that reactor protection collects zero-sequence current amount, forward-order current amount and negative-sequence current amount, but the direction of forward-order current amount and zero-sequence current amount and forward-order current amount and negative-sequence current amount is contrary.As shown in Figure 2.
Below announced the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all technical schemes that mode obtained of taking to be equal to replacement or equivalent transformation all drop in protection scope of the present invention.
Claims (1)
1. turn space protection for reactor sequence component direction is characterized in that comprising:
(1), reactor protection is gathered the size and Orientation of zero-sequence current amount, negative-sequence current amount, forward-order current amount;
(2), zero-sequence current amount, negative-sequence current amount, forward-order current amount be all bigger, and direction is judged as inductor turn-to-turn fault when consistent;
(3), zero-sequence current amount, negative-sequence current amount, forward-order current amount be all bigger, and the direction of the direction of zero-sequence current amount, negative-sequence current amount and forward-order current amount is judged as the outer single phase ground fault of electric power system generating region when inconsistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101900055A CN101207272B (en) | 2007-11-16 | 2007-11-16 | Turn space protection for reactor sequence component direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101900055A CN101207272B (en) | 2007-11-16 | 2007-11-16 | Turn space protection for reactor sequence component direction |
Publications (2)
| Publication Number | Publication Date |
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| CN101207272A true CN101207272A (en) | 2008-06-25 |
| CN101207272B CN101207272B (en) | 2010-06-16 |
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| CN2007101900055A Active CN101207272B (en) | 2007-11-16 | 2007-11-16 | Turn space protection for reactor sequence component direction |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006802A (en) * | 2015-07-15 | 2015-10-28 | 南京国电南自电网自动化有限公司 | Reactor protecting method based on current amplitude comparison sequence component |
| CN105044543A (en) * | 2015-08-10 | 2015-11-11 | 中国电力科学研究院 | Electric reactor fault determination method after PT disconnection |
| CN105162090A (en) * | 2015-07-15 | 2015-12-16 | 南京国电南自电网自动化有限公司 | Graded controllable high-voltage parallel reactor protecting method |
| CN109494683A (en) * | 2018-11-16 | 2019-03-19 | 内蒙古电力勘测设计院有限责任公司 | A kind of protective device and method for 220KV route current-limiting reactor |
| CN109738739A (en) * | 2018-12-20 | 2019-05-10 | 国网北京市电力公司 | Fault detection method and device |
| CN109818333A (en) * | 2019-03-25 | 2019-05-28 | 北京国网富达科技发展有限责任公司 | A kind of reactor short circuit monitoring method and device |
| CN113937730A (en) * | 2021-09-26 | 2022-01-14 | 长园深瑞继保自动化有限公司 | Inter-turn protection method and device and computer equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424956C (en) * | 2005-01-25 | 2008-10-08 | 北京四方继保自动化股份有限公司 | Fault tolerant re-judging negative sequence direction locking type longitudinal zero voltage inter-turn protection for generator |
-
2007
- 2007-11-16 CN CN2007101900055A patent/CN101207272B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006802A (en) * | 2015-07-15 | 2015-10-28 | 南京国电南自电网自动化有限公司 | Reactor protecting method based on current amplitude comparison sequence component |
| CN105162090A (en) * | 2015-07-15 | 2015-12-16 | 南京国电南自电网自动化有限公司 | Graded controllable high-voltage parallel reactor protecting method |
| CN105162090B (en) * | 2015-07-15 | 2017-09-15 | 南京国电南自电网自动化有限公司 | It is classified controllable high-voltage shunt reactor guard method |
| CN105006802B (en) * | 2015-07-15 | 2017-10-31 | 南京国电南自电网自动化有限公司 | Reactor protection method based on electric current than width formula order components |
| CN105044543A (en) * | 2015-08-10 | 2015-11-11 | 中国电力科学研究院 | Electric reactor fault determination method after PT disconnection |
| CN109494683A (en) * | 2018-11-16 | 2019-03-19 | 内蒙古电力勘测设计院有限责任公司 | A kind of protective device and method for 220KV route current-limiting reactor |
| CN109738739A (en) * | 2018-12-20 | 2019-05-10 | 国网北京市电力公司 | Fault detection method and device |
| CN109818333A (en) * | 2019-03-25 | 2019-05-28 | 北京国网富达科技发展有限责任公司 | A kind of reactor short circuit monitoring method and device |
| CN109818333B (en) * | 2019-03-25 | 2020-05-08 | 北京国网富达科技发展有限责任公司 | Short circuit monitoring method and device for reactor |
| CN113937730A (en) * | 2021-09-26 | 2022-01-14 | 长园深瑞继保自动化有限公司 | Inter-turn protection method and device and computer equipment |
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| Publication number | Publication date |
|---|---|
| CN101207272B (en) | 2010-06-16 |
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Assignee: NANJING GUODIAN NANZI RURAL POWER GRID AUTOMATION ENGINEERING CO., LTD. Assignor: Nanjing Automation Co., Ltd., China Electronics Corp. Contract record no.: 2011320000363 Denomination of invention: Turn space protection for reactor sequence component direction Granted publication date: 20100616 License type: Exclusive License Open date: 20080625 Record date: 20110323 |
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Owner name: GUODIAN NANJING AUTOMATION CO., LTD. Free format text: FORMER OWNER: NANJING AUTOMATION CO., LTD., CHINA ELECTRONICS CORP. Effective date: 20121127 |
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Free format text: CORRECT: ADDRESS; FROM: 210003 NANJING, JIANGSU PROVINCE TO: 211100 NANJING, JIANGSU PROVINCE |
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Effective date of registration: 20121127 Address after: 211100 No. 8 SIEMENS Road, Jiangning Development Zone, Nanjing, Jiangsu Patentee after: Nanjing Guodian Nanjing Grid Automation Co., Ltd. Address before: 210003, No. 38, new exemplary Road, Nanjing, Jiangsu Patentee before: Nanjing Automation Co., Ltd., China Electronics Corp. |
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Assignee: NANJING GUODIAN NANZI RURAL POWER GRID AUTOMATION ENGINEERING CO., LTD. Assignor: Nanjing Automation Co., Ltd., China Electronics Corp. Contract record no.: 2011320000363 Date of cancellation: 20131220 |
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