This paper presents that the protection for the phase to phasefault should be composed of high frequency teleprotection channel and overreached distance relay.
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。
2
Theory analysis and simulation results show that the new phase selector can determine fault types properly and be used in transmission line protective relay.
理论分析和仿真计算表明，使用电压量的选相元件能够正确地判别各种故障类型，满足高压线路保护的需要。
3
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).