扎鲁特——青州±800kV特高压直流换流站传导电磁干扰水平研究

Research of Conductive Electromagnetic Interference in Converter Station of ZhaluteQingzhou ±800 kV UHVDC Project

文中进行了蒙东扎鲁特—青州±800 kV/10 000 MW特高压直流输电工程换流站传导电磁干扰特性的定量分析。依据现有直流工程设计方法及该项工程特点,给出了两端换流站一次设备的主要参数,给出了换流阀、换流变压器、平波电抗器和交直流滤波器的宽频等效电路。以此为基础,建立了直流换流站整体的宽频等效模型,分析了阀塔电压和电流的电磁干扰特性,研究了换流变和平波电抗器对传导电磁干扰的衰减特性,进行了不同触发角时电磁干扰特性的对比分析。文中为该特高压工程后续相关研究提供了参考。

The paper conducts the quantitative analysis of the conductive electromagnetic interference of Zhalute-Qingzhou ±800 kV/10 000 MW UHVDC project. Based on the design method of existing projects and the consider-ations of the features of this project under study,the main parameters of primary devices in converter stations are de-signed,and the broadband equivalent circuit of converter valve,converter transformer,smoothing reactor and AC/DCfilter banks are presented. On the basis of these works,the whole broadband equivalent model of the converter stationis built,the electromagnetic interference characteristics of the voltage/current of valve tower are analyzed,the atten-uation characteristics of converter transformer and smoothing reactor on the conducted electromagnetic interferencecharacteristic are researched respectively,and electromagnetic interference characteristics under different firing an-gles are compared. This paper provides the necessary reference for the subsequent study of this UHVDC project.