Substation area protection based integrated failure protection method for substations

A technology for station domain protection and failure protection, applied in emergency protection circuit devices, electrical components, etc., can solve problems such as difficult maintenance, easy to cause malfunction, and complicated wiring of secondary circuits, so as to simplify wiring and setting, and improve reliability , the effect of good application prospects

Active Publication Date: 2013-11-06
NARI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing traditional circuit breaker failure protection secondary circuit wiring complex, difficult maintenance, easy to leave safety hazards, easy to cause malfunction problems

Method used

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  • Substation area protection based integrated failure protection method for substations
  • Substation area protection based integrated failure protection method for substations

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] The substation integrated failure protection method based on the station domain protection of the present invention, on the basis of the station domain protection device, adopts the topology automatic identification and the minimum area differential current detection method, realizes the whole substation integrated failure protection, and can simplify the failure protection Wiring and setting, quickly and accurately identify the faulty circuit breaker and isolate the fault with the smallest power outage range, shorten the fault protection action time, and improve the reliability of the fault protection. It is suitable for substations with voltage levels between 110kV~1000kV, including the following step,

[0027] Step (1), configure the station domain protection device on the interval layer of the substation. The substation is a conventional substation, a digita...

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Abstract

The invention discloses a substation area protection based integrated failure protection method for substations. On the basis of substation area protection devices, an automatic topological structure identification and minimum area difference stream detection method is used for achieving integrated failure protection of the whole substations, failure protection wiring and setting can be simplified, failed breakers can be identified quickly and accurately, failures can be isolated in minimum power outage ranges, failure protection actuation time is shortened, reliability of failure protection is improved, and the method is applicable to the substations with voltage classes between 110kV and 1000kV and has the good application prospect.

Description

technical field [0001] The invention relates to a substation integrated failure protection method based on station domain protection, and belongs to the technical field of relay protection of electric power systems. Background technique [0002] The circuit breaker failure protection is the near-backup protection of the circuit breaker. When the relay protection action of the faulty electrical equipment issues a trip command and the circuit breaker refuses to operate, it can cut off other related circuit breakers in the same plant within a short time limit to limit power failure. In the smallest range, so as to ensure the stable operation of the entire power grid, it has been widely used in 220kV and above voltage level power grids. [0003] The secondary circuit of traditional circuit breaker failure protection is more complex than general component and line protection. Because different protection devices are related to each other, it involves a wide range of aspects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/045H02H7/22H02H7/26
Inventor 江卫良郝后堂马营李延新史泽兵郑作伟
Owner NARI TECH CO LTD
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