摘要
对输电线路距离保护多相补偿阻抗元件的工作原理和工作特点进行详细分析,提出2种多相补偿阻抗元件的判据确定方法.仿真分析结果表明,多相补偿阻抗元件可正确区分保护正向区内、正向区外及反方向故障情况,而且受过渡电阻的影响较小.
The principle and characteristics of multi-phase compensate impedance component in power line distance protection are analyzed in the paper. Two criterions of multi-phase compensate impedance component are presented. Simulation analysis results show that the multi-phase compensate impedance component can distinguish outside faults and inside faults of the protected line correctly and it is affected very slightly by fault resistance.
出处
《电力科学与技术学报》
CAS
2007年第4期26-30,35,共6页
Journal of Electric Power Science And Technology
基金
湖南省教育厅科技项目(06c117)
关键词
距离保护
多相补偿阻抗元件
相间不对称故障
仿真
Power lines
distance protection
multi-phase compensate impedance component
phase-tophase unsymmetrical fault
