Catenary power supply high-voltage system -with insulation detection

Abstract

The invention discloses a Catenary power supply high-voltage system -with insulation detection. The pantograph, the high-voltage circuit breaker, the high-voltage isolating switch and the high-voltagetransformer are connected in turn. The pantograph is in contact with the catenary, and one end of the primary side of the high-voltage voltage transformer is connected between the pantograph and thehigh-voltage circuit breaker, and the other end is connected to ground. The battery is sequentially connected to the secondary side of the high voltage transformer through an inverter and an insulation detection power supply contactor. The high-voltage transformer is connected with the rectifier, a high-voltage chamber door is arranged between the high-voltage transformer and the rectifier, and the high-voltage system includes interlocking contacts for reflecting the switching state of the high-voltage chamber door. Only when the pantograph is in the falling state, the high voltage isolation switch is in thedisconnection state and the door of the high voltage chamber is in the closed state, -the insulation detection of the high voltage system be carried out. The invention can solve the technical problem that the system cannot work normally due to the insulation damage of the high-voltage system, thereby causing the catenary to trip or even burn off the catenary, and affecting the railway transportation.

Description

technical field [0001] The invention relates to the field of railway electrics, in particular to a catenary power supply high-voltage system with insulation detection applied to railway engineering vehicles. Background technique [0002] At present, with the continuous increase of the total mileage of my country's railways, the workload of railway maintenance is also increasing. Large-scale road maintenance machinery has become the main force of my country's railway maintenance and repair. Dozens of mechanized construction teams are active on the Wanli railway line every day. These construction teams work in the field all year round, fighting severe cold and scorching heat, and have made great contributions to the development of my country's railway industry, especially to the speed-up of railways in recent years. In order to solve the life problems of the railway maintenance fleet in the field, the railway bureaus have equipped the fleet with camping trains with mechanized ...

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