由于回路之间互感作用的存在，给多回路输电线路参数的测量带来了很大的困难。

And it gives a huge challenge for the parameters measurement due to the mutual inductance effects between different lines.

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介绍了超高压输电线路多回路耐张塔用预制式铝管跳线装置的研究、试制、试验及应用。

This paper introduced the research, trial production, testing and application of jumper device of prefabricating aluminum pipe for multi-circuit strain tower in EHV transmission line.

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