溪洛渡和向家坝特高压直流输电换流站接地极型式的研究Research on Types of Grounding Poles for HVDC Converter Stations Located in Xiluodu and Xiangjiaba
崔明德;刘连光;孙中明;
摘要(Abstract):
分析了直线形、星形和圆环形3种常见水平接地极的特点,结合溪洛渡、向家坝直流换流站初选东阳和万寿极址的地形资料,对标准3圆环接地极的环径比例选择、各子圆环的埋深特性及采用该电极型式的可行性进行了分析研究。模拟计算表明:溪洛渡换流站接地极应优先考虑3圆环接地极型式,当其环径比例为0.7、布置型式采用同心非等深布置时,东阳极址在额定条件下可满足系统运行要求,且可获得较高的安全裕量;对于万寿极址,标准3圆环电极不能满足系统运行要求,如采用跑道式环形电极,则经济性很差,因此不宜作为换流站接地极址。
关键词(KeyWords): 特高压直流输电;直线电极;星型电极;圆环电极;埋深;绝缘
基金项目(Foundation):
作者(Author): 崔明德;刘连光;孙中明;
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DOI:
参考文献(References):
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