Distribution line short circuit fault isolation system and method

Abstract

The embodiment of the invention discloses a distribution line short circuit fault isolation system. The system comprises a fault probe, a data repeater, a GSM / GPRS junction center, a master monitoring station and intelligent switches. The fault probe is installed on a distribution line and is triggered to send address information and action information to the data repeater when a short circuit fault occurs on the distribution line, the data repeater is connected with the fault probe, and the GSM / GPRS junction center is connected to the data repeater. The data repeater is used for sending the address information and the action information of the fault probe to the GSM / GPRS junction center, the GSM / GPRS junction center is used for conducting demodulation, decoding and data processing on the received information and sending a processing result to the master monitoring station, the master monitoring station is used for generating a disconnection instruction according to the processing result, and the intelligent switches are arranged at the two ends of a line where the fault probe is installed and used for disconnecting a faulty line according to the disconnection instruction. The invention further discloses a distribution line short circuit fault isolation method. The distribution line short circuit fault isolation system and method can improve the isolation efficiency of the short circuit fault and improve automation level.

Description

technical field [0001] The present application relates to the technical field of power distribution systems of electric power systems, in particular to an overhead line fault isolation system and its corresponding method. Background technique [0002] Usually, the power system is divided into three major components: power generation, transmission and distribution. The power distribution system refers to the power network in the power system from the outlet of the step-down distribution substation (high-voltage distribution substation) to the user terminal. system. The power distribution system includes a variety of power distribution equipment (or components) and overhead lines that serve as connections between power distribution equipment. As the last link of the power system, the power distribution system directly faces the end users, and its perfection is directly related to the reliability and quality of power consumption of the majority of users. However, the branch l...

AI Technical Summary

Problems solved by technology

However, in the event of a short-circuit fault, usually only the outlet circuit breaker will trip, and the switch sections set on the trunk line can only isolate the trunk line into a limited number of sections. Isolation often requires a lot of manpower, material resources and time. This method of combining some equipment with manual on-site search has a low level of automation and low short-circuit fault isolation efficiency.

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