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Power distribution network high-reliability self-healing method and system

A reliability and distribution network technology, applied in information technology support systems, electrical components, circuit devices, etc., can solve the problems of adjacent line disconnection, wrong judgment of fault interval, and expansion of power outage range, so as to avoid the expansion of fault interval. The effect of malfunction and avoiding the malfunction of the switch

Active Publication Date: 2019-07-23
STATE GRID BEIJING ELECTRIC POWER +1
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  • Claims
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Problems solved by technology

However, it is neglected that the prerequisite for realizing high reliability of the distribution network is to accurately judge the fault interval.
At present, the judgment of the fault area mainly depends on the distribution automation system to judge the fault area according to the path of the fault current flow. Using this criterion, there is a problem that the system judges the fault area incorrectly. The line is considered as a non-faulty area. When self-healing is realized, the faulty line will be poured into the adjacent line, which will cause the adjacent line to trip and expand the scope of power outage.

Method used

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  • Power distribution network high-reliability self-healing method and system
  • Power distribution network high-reliability self-healing method and system
  • Power distribution network high-reliability self-healing method and system

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Embodiment Construction

[0034] Below in conjunction with embodiment the present invention is described in further detail:

[0035] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0036] refer to figure 1 , the distribution network high reliability self-healing method described in the present invention comprises the following steps:

[0037] The distribution automation system judges whether the distribution n...

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Abstract

The invention discloses a power distribution network high-reliability self-healing method and system. The method comprises the following steps: a power distribution automation system judging whether apower distribution network line has a fault or not, and positioning a fault interval of the power distribution network when the power distribution network line has a fault; carrying out primary superposition on the faulted power distribution network line, and repositioning the fault interval of the power distribution network again; when the fault intervals of the power distribution network positioned for the two times are the same, the power distribution automation system adopting a self-healing control strategy to isolate the fault section of the power distribution network, meanwhile guidingthe non-fault intervals of the power distribution network into adjacent power distribution network lines, when the fault intervals of the power distribution network positioned for the two times are different, the power distribution automation system not executing a self-healing control strategy. The method and the system can realize accurate positioning of the fault intervals of the power distribution network and further realize high-reliability self-healing of the power distribution network.

Description

technical field [0001] The invention belongs to the technical field of distribution network regulation and relates to a high-reliability self-healing method and system for a distribution network. Background technique [0002] The conditions for the distribution network to achieve high reliability self-healing are: first, accurate and reliable distribution network fault location; second, intelligent self-healing control. To realize the self-healing of the distribution network, the accuracy of fault location is particularly important. When the fault location is wrong, the system will mistakenly transfer the faulty line to the adjacent line, which will cause the adjacent line to trip due to the fault, thereby expanding the scope of the fault. Therefore, in order to achieve highly reliable self-healing of the distribution network, the fault of the distribution network must be accurately located first, and then the non-fault zone should be relocated to the adjacent line. [000...

Claims

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Application Information

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IPC IPC(8): H02H7/26H02J13/00
CPCH02H7/26H02J13/00Y02E60/00Y04S10/20
Inventor 徐晓进黄立华周运斌张绍峰董楠王卫郭继芳
Owner STATE GRID BEIJING ELECTRIC POWER
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