特高压变电站接地系统设计的探究

Research on Grounding System Design of UHV Substation

特高压系统具有电能容量大、电压等级高的特性,其安全隐患大,一旦发生故障,容易损坏电气设备,造成经济损失。为了使变电站稳定运行,就需要采用合理的方式优化完善变电站接地系统。文章结合对变电站短路电流、土壤模型、分流系数和接地电阻等前提条件的分析,探讨了特高压变电站接地系统的设计。

UHV system has the characteristics of high power capacity and high voltage level, which has great potential for safety. Once it fails, it will easily damage electrical equipment and cause economic losses. In order to make a stable operation of the substation, a reasonable way is needed to optimize the substation grounding system. Based on the analysis of substation short-circuit current, soil model, shunt coefficient and grounding resistance, the design of grounding system for UHV substation was discussed.