In addition, the rule of variations measuring impedance of distance relay when cross country faults occurs between the double circuit lines on the same tower.
最后从理论上分析了同杆并架双回线跨线故障时距离继电器测量阻抗的变化规律。
参考来源 - 同杆跨线故障的选相及其单回线故障测距的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This paper analyses selectors of transverse differential current direction protection using two types polarizing voltage for double circuit lines on the same tower.
对两种极化电压下的横联差动电流方向保护的选择元件在同杆并架双回线故障下的动作行为进行了研究。
For a practical project, ideas of scheming the relay protection for double-circuit lines on the same tower and choosing the telecommunication channel are analysed.
结合某工程实例，剖析同杆双回线路保护配置和保护远传信号通道选择的思路。
The paper analyzes the characteristics and economic indexes of ultrahigh voltage double circuit lines installed on same tower and compares with single circuit lines.
分析同塔双回路超高压输电线路的技术特性和经济指标，并与单回路作比较。
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