Double loop network distributing line fault handling method by means of cooperation of spare power automatic switching and distribution automation

A fault handling method and power distribution automation technology, applied in circuit devices, electrical components, emergency power supply arrangements, etc., to achieve the effects of fault recovery structure optimization, good fault tolerance, and high power supply reliability

Active Publication Date: 2014-10-29
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0009] The purpose of the present invention is to provide a double-ring network power distribution line fault handling method that cooperates with automatic switching and distribution automation to solve the defects in the ex

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  • Double loop network distributing line fault handling method by means of cooperation of spare power automatic switching and distribution automation
  • Double loop network distributing line fault handling method by means of cooperation of spare power automatic switching and distribution automation
  • Double loop network distributing line fault handling method by means of cooperation of spare power automatic switching and distribution automation

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Embodiment Construction

[0021] The content of the invention will be further described below in conjunction with examples.

[0022] see Figure 1a to Figure 1d As shown, a double-ring network power distribution line fault handling method for automatic switching and distribution automation cooperation of the present invention comprises the following steps:

[0023] (1) Each user distribution transformer takes one power supply from the two lines of the double-ring network, and equips each user distribution transformer with an incoming line standby automatic switching device; for overhead lines, the switching delay time of the standby automatic switching is set to be greater than One-time reclosing delay time, for overhead lines without distributed power, set to 1-2s; for overhead lines with distributed power, set to 3.5-4.5s; for cable lines, set switching delay time to 0.5- 1s.

[0024] (2) Cooperate with the relay protection of the outgoing line circuit breaker of the substation and the on-site self-...

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Abstract

The invention relates to a double loop network distributing line fault handling method by means of cooperation of spare power automatic switching and distribution automation. The double loop network distributing line fault handling method by means of the cooperation of the spare power automatic switching and the distribution automation is characterized by firstly utilizing advantages of high movement speed and reliable movement of the spare power automatic switching when faults occur by means of cooperation of the spare power automatic switching and the distribution automation to quickly resume power supply of power-loss loads; then performing correction control by means of centralized intelligent distribution automation, optimizing and adjusting fault handling results on the basis of global information, and further generating a remedy when the spare power automatic switching handling fails to make up a limitation that a spare power automatic switching is only based on local information. The double loop network distributing line fault handling method by means of the cooperation of the spare power automatic switching and the distribution automation can well meet requirements of double loop network distributing line fault handling and improves fault handling performance and power supply reliability.

Description

technical field [0001] The invention relates to the field of fault handling of distribution networks, in particular to a method for handling faults of double-ring network power distribution lines in which backup automatic switching (full name: backup incoming line automatic switching device) and distribution automation are coordinated. Background technique [0002] In order to meet the requirements of high power supply reliability, a lot of research work has been carried out from the aspects of distribution grid, electrical equipment and automation technology. [0003] Distribution automation is an important means to achieve rapid fault location, isolation, and power supply recovery, thereby improving the reliability of power supply. In recent years, a large number of research results have been obtained. However, for urban core areas with high requirements for power supply reliability, in order to minimize the impact of power failures and improve power supply reliability, th...

Claims

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Application Information

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IPC IPC(8): H02J9/06H02J13/00
CPCY02B90/20Y04S20/12
Inventor 刘健顾建炜张小庆苏毅方赵树仁郑伟彦张志华
Owner STATE GRID CORP OF CHINA
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