The invention relates to the technical field of electrical control of railway vehicles, and discloses a rapid pantograph descending control circuit and method for avoiding pantograph-catenary fault diffusion. The circuit comprises a pantograph linkage pantograph descending control circuit which is composed of a programmable logic control unit, a circuit breaker, a pantograph descending position relay and an emergency pantograph descending electromagnetic valve, and signal transmission between units is achieved through train lines. The first programmable logic control unit outputs a forced far-end pantograph descending signal to the second programmable logic control unit after logic operation according to the first input signal, and the second programmable logic control unit outputs an electric signal to drive the emergency pantograph descending electromagnetic valve after logic operation according to the second input signal, so that quick pantograph descending is realized. Generally speaking, the method effectively solves the problem that in the prior art, when a serious pantograph-catenary fault occurs, pantograph-catenary fault diffusion is caused after automatic pantograph descending, and the stability and safety of the system are improved.
本发明涉及轨道车辆电气控制技术领域,公开了一种避免弓网故障扩散的快速降弓控制电路及方法。该电路包括受电弓联动降弓控制电路,由可编程逻辑控制单元、断路器、降弓位置继电器及紧急降弓电磁阀组成,通过列车线实现单元间信号传输。第一可编程逻辑控制单元根据第一输入信号经过逻辑运算后输出强制远端降弓信号至第二可编程逻辑控制单元,第二可编程逻辑控制单元根据第二输入信号经过逻辑运算后输出电信号驱动紧急降弓电磁阀,实现快速降弓。总体而言,本发明有效解决了在出现严重弓网故障时现有技术中存在的自动降弓后引发弓网故障扩散的问题,提高系统稳定性和安全性。
Rapid pantograph descending control circuit and method for avoiding pantograph-catenary fault diffusion
一种避免弓网故障扩散的快速降弓控制电路及方法
2025-05-23
Patent
Electronic Resource
Chinese
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