在供电企业中，输变电设备的健康运行是确保安全供电的重要条件。

At the power supply enterprise, the health running of transmission and transformation equipment is the fundamental conditions of the safe power supply.

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作者提出了可靠性保险的概念，它是保险理论在供电可靠性管理中的应用。

A concept of power distribution reliability insurance, which is an application of insurance theory in the management of power distribution reliability, is proposed.

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所有的集电靴通常为了紧急目的需要以某种方式在供电轨上畅通无阻地移动。

All shoes need some way of being moved clear of the current rail, usually for emergency purposes.

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