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Self-recovering method of single-phase earth faults

A single-phase ground fault, phase voltage technology, applied in the direction of fault location, electrical components, emergency protection circuit devices, etc., can solve the problems that cannot meet the requirements of intelligent distribution network fault self-healing

Active Publication Date: 2011-09-14
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing distribution line fault handling technology cannot meet the requirements of fault self-healing in intelligent distribution network

Method used

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  • Self-recovering method of single-phase earth faults
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  • Self-recovering method of single-phase earth faults

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Embodiment Construction

[0021] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, therefore, the present invention is not limited to the specific embodiments disclosed below limit.

[0023] figure 1 A flow chart of a single-phase-to-ground fault self-healing method according to an embodiment of the present invention is shown.

[0024] Such as figure 1 As shown, the self-healing method for a single-phase ground fault according to an embodiment of the present invention includes: step 102, detecting in real time whether a single-phase ground fault occurs in the power distribution s...

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Abstract

The invention provides a self-recovering method of single-phase earth faults, comprising, step 102, detecting if a single-phase earth fault occurs in a distribution system in real time; step 104, determining a circuit of the single-phase earth fault when a single-phase earth fault occurs in the distribution system; step 106, turning off a load-side interconnection switch of the circuit, then, turning on a load-side incoming line switch of the circuit, and finally turning on a main side switch of the circuit. According to the technical scheme of the invention, a single-phase earth fault of a neutral point non-effective grounding system can be automatically and rapidly isolated, and the load cannot break down during the fault isolation.

Description

technical field [0001] The invention relates to power system protection and control technology, in particular to a single-phase ground fault self-healing method. Background technique [0002] Fault self-healing means that no or only a small amount of human intervention is required to isolate problematic components in the power network or restore them to normal operation, minimizing or avoiding power supply interruptions for users. The core of smart distribution network construction is to realize system self-healing. Self-healing includes automatic fault diagnosis, fault isolation and system self-recovery. The goal of self-healing is to avoid load outages and ensure the reliability of power supply for users. [0003] The distribution line is directly connected to the load, and the safe and reliable operation of the distribution line is directly related to the reliability of the load power supply. However, the failure of the distribution line is inevitable. Power workers ha...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26G01R31/08
Inventor 施慎行董新洲
Owner TSINGHUA UNIV
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