摘要
基于目前的最新进展,给出了两种典型的避雷器布置方案,分析了两个方案对最高端换流变阀侧不同保护方式的优缺点。从避雷器持续运行电压、荷电率、冲击保护水平和能量要求等方面论述了避雷器参数选取应该考虑的因素,并指出按照逆变站实际运行电压来选取避雷器参考电压,可以降低逆变站避雷器的保护水平和设备绝缘水平,降低设备制造成本。
Based on the latest research of UHVDC converter station insulation coordination,two arrangement schemes of arrester were introduced,and the differences between the protection of the highest potential converter transformer valve-side in two schemes were analyzed in detail.From the aspects of continous operating voltage,electric load rate,protection level and energy demand,the factors which should concern in selecting arrester parameters were discussed.The protection levels and insulation levels of equipment decrease if the arresters＇ reference voltage was selected according to the actual operating voltage of inverter converter station.As a result,the cost of equipment manufacture will reduce.
出处
《能源工程》
2011年第5期14-17,共4页
Energy Engineering
关键词
特高压直流输电
绝缘配合
避雷器布置
UHVDC
insulation coordination
arrangement scheme of arrester
