电气主设备内部故障的主保护方案是差动保护，差动保护在发电机和线路上的应用比较简单。
The main protection scheme of power equipments against internal faults has been differential protection, the application of which is comparatively simple in the generator and transmission line.
用于空调房间电气线路，乘客和货物的提升，通用等设备的故障、灯光、音响、信号，也可以用于连接ON/OFF辅助接点。
Electrical circuit for the air-conditioned rooms, passenger and goods lifts, general and other equipment failures, lighting, sound, the signal can also be used to connect ON / OFF auxiliary contacts.
提出了一种新的故障定位的精确算法。它是利用输电线路双端电气量进行故障测距的。
This paper proposes a new fault location algorithm based on the data acquired from both end of the faulted line.
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