变电站10 kV小电阻接地方式下零序电流互感器的配置研究

Research on the Configuration of Zero Sequence Current Transformers Under 10 kV Low Resistance Grounding Mode in Substations

为实现10kV小电阻接地方式下零序电流互感器的精准配置,文章以A变电站为例,全面分析该变电站10kV小电阻接地系统情况与零序电流情况,并基于实际数据,提出该变电站10kV小电阻接地方式下,零序电流互感器配置策略与方法。通过试验验证,得出本次零序电流互感器的配置策略效率远优于传统配置策略,具有较高的实践推广价值。

In order to achieve precise configuration of zero sequence current transformers under 10 kV low resistance grounding mode,the article takes A substation as an example to comprehensively analyze the 10 kV low resistance grounding system and zero sequence current situation of the substation.Based on actual data,the article proposes the configuration strategy and method of zero sequence current transformers under 10 kV low resistance grounding mode.Finally,through experimental verification,it was found that the efficiency of the zero sequence current transformer configuration strategy is much better than traditional configuration strategies,and has high practical promotion value.