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A protection method and apparatus for power distribution network area faults

A technology for distribution networks and regions, applied in emergency protection circuit devices, electrical components, etc., can solve problems such as cumbersome and complex setting calculations, and achieve the effect of improving reliability, meeting the requirements of protection control, and solving protection limitations.

Pending Publication Date: 2019-04-05
CHINA ELECTRIC POWER RES INST +2
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AI Technical Summary

Problems solved by technology

Moreover, the backup protection method of the smart terminal needs to set the backup object and protection range in advance, and requires complex setting calculations, which is cumbersome

Method used

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  • A protection method and apparatus for power distribution network area faults
  • A protection method and apparatus for power distribution network area faults
  • A protection method and apparatus for power distribution network area faults

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Embodiment Construction

[0046] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0047]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments 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 all belong to the protection scope of the present invention.

[0048] The present invention provides a protection method for distribution network regional faults, such as figure 1 shown, including:

[0049] 101. Divide the protection area of ​​the dis...

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Abstract

The invention relates to a protection method and apparatus for power distribution network area faults. The method comprises the steps of dividing a protection area of a distribution network accordingto adjacent components of intelligent terminals of the power distribution network; determining whether the protection area is a fault area by using a protection starting criterion; and performing protection actions on the intelligent terminals in the fault area and the intelligent terminals in the non-fault area respectively. The technical solution provided by the present invention can perform real-time detection, location and isolation on faults occurring in the power distribution network. The reliability of the fault handling is improved; the complicated tuning calculation is avoided; and the limitation of the power system protection is effectively solved.

Description

technical field [0001] The invention relates to the field of distribution network fault protection, in particular to a protection method and device for distribution network area faults. Background technique [0002] With the increasing global energy shortage and environmental pollution, distributed power generation using clean fuels as energy is increasingly used in the power industry. Due to the increasing penetration of Distributed Generation (DG) in the power system, the power supply mode has a transition trend from large-scale centralized power supply to centralized and distributed combined power supply. However, the power generation characteristics of DG are different from traditional power generation. When DG is connected to the distribution network, it will change the distribution network from a simple radial network with a single power source to a complex network with multiple power sources, thereby affecting the network structure and power flow direction. Ultimatel...

Claims

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Application Information

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IPC IPC(8): H02H7/28
CPCH02H7/28
Inventor 叶荣波夏俊荣汪东平刘宁波汪春张祥文华光辉周昶刘海璇徐涛芦苇许伟军栗峰孔爱良梁硕江星星盖保儒汪毅
Owner CHINA ELECTRIC POWER RES INST
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