An Online Monitoring System for Distribution Line Faults

Abstract

The invention belongs to the technical field of a power distribution line, and particularly relates to an on-line monitoring system for power distribution line fault. The on-line monitoring system for the power distribution line fault comprises a main control unit, a fault detection unit, an amplifying unit and a radio frequency unit, wherein the fault detection unit is connected with the amplifying unit; the amplifying unit is connected with the main control unit; and the main control unit is connected with the radio frequency unit. According to the on-line monitoring system for the power distribution line fault disclosed by the invention, a current transformer can quickly and accurately on-line detect the situations like an earth fault, a short-circuit fault, a line load, harmonic wave, etc. and transmit an acquired characteristic signal to a system master station through an antenna to process the characteristic signal, so as to realize the long-distance transmission; the situation of the distribution line fault can be monitored in real time during the whole process without manual detection; the field, the distant places and the places with complicated environment can also be monitored in real time; besides, the fault points can be located quickly to facilitate the targeted maintenance by the line maintenance personnel; moreover, the work efficiency of the staff is greatly improved, the labor intensity of the staff is reduced and the human cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of power distribution lines, in particular to an online fault monitoring system for power distribution lines. Background technique [0002] The power system is the basic industry of the national economy. With the development of the economy, the scale of the power system continues to expand, and people's requirements for power supply services and power quality are getting higher and higher. For this reason, my country has put forward the overall goal of building a smart grid. The smart grid is composed of a smart transmission network and a smart distribution network. One of the core contents is to make the distribution network have higher power supply reliability, have a self-healing (reconfiguration) function, and minimize the impact of power supply failures on users. State Grid and China Southern Power Grid have spent more than 10 billion yuan on products on the distribution network through bidding. Among ...

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