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Failure start circuit and method for starting a failure circuit

A technology of starting circuit and failure circuit, applied in circuit devices, electrical components, etc., can solve the problem that the failure starting circuit is not suitable for old substations, etc.

Active Publication Date: 2017-02-15
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a failure starting circuit and a method for starting the failure circuit to solve the problem that the existing failure starting circuit is not suitable for the old substation

Method used

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  • Failure start circuit and method for starting a failure circuit
  • Failure start circuit and method for starting a failure circuit
  • Failure start circuit and method for starting a failure circuit

Examples

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Comparison scheme
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Embodiment Construction

[0015] see figure 1 , figure 1 It is a structural schematic diagram of the first embodiment of the failure startup circuit of the present invention.

[0016] The failure starting circuit in this embodiment includes a first starting circuit 100 and a second starting circuit 200 connected in parallel, and the first starting circuit 100 includes a first current starting circuit 110 connected in series, a first main transformer protection circuit 120 and a circuit for passing through The first switch circuit 130 that switches the switch on the spot to start the failure, the first main transformer protection circuit 120 includes the first protection start circuit 121 and the first three-jump start circuit 122 connected in parallel, and the second start circuit 200 includes the second switch circuit connected in series. The current starting circuit 210, the second main transformer protection circuit 220 and the second knife switch circuit 230 used to start the failure by switching ...

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Abstract

The invention discloses a failure starting circuit and a method for starting a failure circuit. The failure starting circuit is formed by connecting a first starting circuit and a second starting circuit in parallel. The first starting circuit is formed by connecting a first current starting circuit, a first main transformer protection circuit and a first disconnector circuit in series. The first main transformer protection circuit is formed by connecting a first protection starting circuit and a first three-jump starting circuit in parallel. The second starting circuit is formed by connecting a second current starting circuit, a second main transformer protection circuit and a second disconnector circuit in series. The second main transformer protection circuit is formed by connecting a second protection starting circuit and a second three-jump starting circuit in parallel. A failure starting signal is generated when the conditions of the current criteria / criterion, the protection action criteria / criterion and switching-in of disconnectors / a disconnector of the first starting circuit and / or the second starting circuit are met at the same time. By the implementation of the failure starting circuit and the method for starting the failure circuit, the complex requirements of an old substation for starting the failure circuit can be satisfied, and space is also reversed for subsequent transformation.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a failure start loop and a method for starting a failure loop. Background technique [0002] In the power system, the circuit breaker failure protection is when the system fails, the protection action of the fault line (or transformer) and the circuit breaker operation failure refuses to trip, using the protection function of the fault line (or transformer) to protect the adjacent circuit breaker of the substation Tripping, if conditions permit, the channel can also be used to make the protection of the remote circuit breakers trip at the same time. [0003] The circuit breaker failure protection is an effective measure to prevent the circuit breaker from refusing to operate, and plays a very important role in the safe and stable operation of the power system. The typical 220kV transformer switch failure startup circuit is equipped with double sets of circuit breaker failu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
Inventor 尹树添徐强超周文琪黄晶晶
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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