变配电所失压保护回路的改进

Improvement of the Return Current Protection When Losing Voltage of the Transformer and Distribution Station

常规的铁路系统变配电所贯通馈线的失压保护回路存在许多问题,针对其存在的问题,对该回路作了一些修改,利用被保护线路的电流来实现闭锁。经过改进,提高了继电保护的选择性和电力系统的供电质量。

There exist many problems in the Unking feeder line's protection when losing voltage in the conventional railway system's transformer and distribution station. According to existing problems, some modifications have been given to the return current and the protected current has been used to lock it. What's more, great improvement have been made to the selectivity of relay protection and the power supply quality of the electrical power system.