A Fault Diagnosis Method for Distribution Network in Power Distribution System

Abstract

The invention discloses a fault diagnosis method for a distribution network in a power distribution system, comprising the steps of: constructing a communication network with each distribution network management device in the distribution network as a node, and the distribution network management devices in the communication network can share each distribution network management The monitoring data collected by the equipment; the monitoring data includes the identification of the corresponding distribution network management equipment; the upstream and downstream relationship of each distribution network management equipment in the distribution network is determined according to the characteristics of the current; according to the changes in the monitoring data of each distribution network management equipment Characteristics, as well as the upstream and downstream positional relationship of each distribution network management device in the distribution network, generate a fault report; the fault report includes one of fault location, fault range and fault type and any combination thereof. Since the embodiment of the present invention can automatically determine the fault location and fault type of the distribution network, it can effectively avoid manual misjudgment, thereby improving the accuracy of fault judgment.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a fault diagnosis method for a power distribution network in a power distribution system. Background technique [0002] Distribution automation system is an automation system that enables distribution enterprises to monitor, coordinate and operate distribution equipment in a remote manner in real time; [0003] The distribution network automation system generally consists of the following parts: distribution master station, distribution substation, distribution network management equipment and communication network; [0004] Distribution network management equipment generally includes feeder terminal unit (Feeder Terminal Unit, FTU), distribution automation terminal (Distribution Terminal Unit, DTU) and distribution transformer monitoring terminal (distributionTransformer supervisory Terminal Unit, TTU) and other equipment. [0005] Taking the feeder terminal equipment as an exampl...

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Problems solved by technology

[0007] After research, the inventor found that in the fault maintenance mode in the prior art, because the operation and maintenance personnel need to receive the notification from the monitoring personnel in the master station to perform corresponding maintenance, it is often because the notification from the detection personnel is not timely or the content of the notification is incorrect. Affecting the maintenance efficiency of distribution network caused by errors

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