地铁直流供电的保护与控制系统对确保地铁的安全可靠运行起着关键作用。

The protection and control system in subway DC power supply systems play a key role in ensuring the safety and reliability of the subway.

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直流供电的控制和保护系统对确保轨道交通的安全、可靠的运行，具有举足轻重的作用。

The control and protection system in DC power distribution systems plays a very important role in ensuring the mass transit railway safe and reliable operation.

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介绍了地铁直流牵引供电系统框架泄漏保护的优化设计方案。

This paper mainly introduces an optimum design scheme for the frame leakage current protection of DC traction power supply system in metro engineering.

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