A new faulty phase selector for high voltage power transmission system is presented.

构造了新型的用于高压输电线路保护的故障选相元件。

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Regularly inspecting high voltage power transmission line and repairing dilapidation are essential to keep power supply reliable.

定期对高压架空输电线路进行故障的检测与修复，是供电可靠性的基本保证。

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Comparing to lower voltage power transmission, EHV power transmission has more advantages and its application is the necessary tendency in China.

特高压输电与较低电压输电相比有许多优点，我国采用特高压输电是必然的趋势。

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It fell onto the main north-south high voltage power transmission line.

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That is the reason why the current emphasis in China is on the construction of 500kv extra-high-voltage lines and long-distance power transmission.

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