【摘要】 讨论了高压直流输电系统的运行方式,提出了接地极设计参数的推荐数值。推荐接地极电流的设计取值应根据HVDC系统结构、运行方式以及换流阀的过负荷能力确定;地面最大允许跨步电势按照不大于5+0.03 sρ(V)或者按照不大于37.5+0.225sρ(V)设计;最大允许接触电势按不大于5+0.015sρ(V)设计;最大允许转移电势取60 V;接地极土壤的最高允许温度不应超过90℃。更多还原

【Abstract】 As the design criteria for HVDA ground electrodes is not available in China,it is necessary to summarize timely design experiences both at home and abroad in this respect.This paper discusses and then proposes the design requirements for the step voltage,contact voltage,transfer voltage,temperature rise and resistance for the HVDC ground electrode.更多还原