摘要
从理论上分析了同杆并架双回线跨线不接地故障时距离继电器测量阻抗的变化规律。提出只有将高频通道、超范围距离元件配合构成允许式纵联距离保护 ,才能保护同杆双回线跨线不接地故障。还对超范围阻抗如何整定进行了讨论。EMTDC仿真试验证明了理论分析结果是正确的。
This paper analyses the rule of variations measuring impedance of distance relay when phase to phase fault occurs between two lines on double-circuit line on the same pole (DLSP). This paper presents that the protection for the phase to phase fault should be composed of high-frequency teleprotection channel and overreached distance relay. The setting of overreached impedance is also discussed. EMTDC dynamic simulation tests prove that the conclusion is correct.
出处
《电力系统自动化》
EI
CSCD
北大核心
2003年第19期61-64,68,共5页
Automation of Electric Power Systems
