同塔双回线路跳闸率很高，应尽快加强防雷研究，提出相应的计算方法。
The trip ratio of the double-circuit line on the same tower is very high. So the study on lightning prevention should be enhanced and corresponding calculation method should be put forward.
绕击是造成特高压线路跳闸的主要原因，尤其在山区应适当减小地线保护角。
Shielding failure is the main reason to cause flashover of the UHV transmission line, so that the shielding angle of grounding wires should be reduced, especially in mountain area.
为此，提出了调度员在输电线路跳闸、变压器跳闸、母线故障及变电站全停电的一些处理方法，并举例给予说明。
In this paper, the author illustrates some treating methods for trip of transmission lines and transformers, bus failures as well as overall service interruption in substations.
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