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| 摘要: |
| 针对负荷电流对差动保护的影响，对故障分量电流的性质进行了分析，并对基于故障分量向量的电流差动保护动作判据进行了理论分析及EMTP仿真验证，比较得出：故障分量差动判据与传统差动判据相比，在重载线路上发生各种故障，尤其是高阻接地时，能够大大提高差动保护的灵敏度。 |
| 关键词: 电流差动保护 动作判据 故障分量 |
| DOI： |
| 分类号:TM773 |
| 基金项目: |
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| Optical pilot differential current protection based on fault component |
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WANG Xiao - yu 1 WU Ye - kai 2 HUANG Shao - feng 1
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| Abstract: |
| According to the influence of load on differential protection,the property of fault compo - nent current and the operation criteria for the differential protection based on fault component vector are analyzed and verified with EMTP simulation.The conclusion can be drawn that the ope - ration criteria based on fault component enhance greatly the sensibility of the protection,especially for heavy load lines with high grounding reisistance. |
| Key words: differential current protection,operation criteria,fault component, |
