CAJ | 학술논문

为解决输电线路覆冰问题，直流融冰技术在电网得到了广泛的应用。要在避雷线上加融冰电流，避雷线必须采用较大间隙进行绝缘化架设，这将改变输电线路网络结构，对短路电流的分配产生影响。本文以500 kV超高压线路避雷线绝缘化为例，试验分析避雷线绝缘子的电气性能；利用ATP－EMTP 仿真软件建立仿真模型，对比仿真分析全线绝缘避雷线和直接接地避雷线工频短路电流分流情况，分析了杆塔接地电阻、杆塔档距、避雷线型号对避雷线分流系数的影响。这将会为满足融冰需要进行地线绝缘化改造和设计提供一定的理论支持和参考。
위해결수전선로복빙문제，직류융빙기술재전망득도료엄범적응용。요재피뢰선상가융빙전류，피뢰선필수채용교대간극진행절연화가설，저장개변수전선로망락결구，대단로전류적분배산생영향。본문이500 kV초고압선로피뢰선절연화위례，시험분석피뢰선절연자적전기성능；이용ATP－EMTP 방진연건건립방진모형，대비방진분석전선절연피뢰선화직접접지피뢰선공빈단로전류분류정황，분석료간탑접지전조、간탑당거、피뢰선형호대피뢰선분류계수적영향。저장회위만족융빙수요진행지선절연화개조화설계제공일정적이론지지화삼고。
Direct Current ( DC) melting ice is one of the effective measures to solve overhead transmission line icing. Insulated ground wire becomes precondition of DC melting ice. In this paper, the actual insulated ground wire of 500 kV extra high voltage transmission? line is taken as research object, analyze electrical performance when its insulation by experiment. Using electromag￣netic transient analysis program EMTP to establish a line of insulated grounding wire and directly grounding wire transmission line model, simulate lightning line short-circuit current shunt coefficient and discuss the impact of the tower grounding resistance, tower span to grounding wire shunt model coefficients on. It has a certain reference to run and design insulated ground wire, potential's in￣crease tower, the economic and rational design of power grid and so on.