Overhead transmission lines is an important part in the power system and the lifeblood of the transmission system.Important element of the transmission line conductor suspension system namely conductor and insulator, hardware.This paper, by using the fault tree analysis method, establishes the mathematical model of the transmission line conductor suspension system running condition assessment, reliably evaluates the running status of system, find out the weak links and the problems of the various parts, for the evaluation and maintenance of overhead transmission line provide theoretical support.
Abstract. Transmission lines ice cover is a kind of serious natural disasters, is one of the major problems to endanger the safety of transmission lines running.Communication often short-circuit current melting ice is melting ice the problem of insufficient power supply capacity is much, and dc melting technology is a kind of ideal and effective method.The basic theory of dc melting technology was analyzed, and the critical current of melting ice in dc are calculated, the calculated for a specific current 500 kv transmission line of melting ice, and preliminarily determines the melting ice, has carried on the simulation analysis using PSCAD/EMTDC software, in order to confirm the availability and effectiveness.
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