A high-voltage system for catenary power supply with insulation detection

Abstract

The invention discloses a catenary power supply high-voltage system with insulation detection, in which a pantograph, a high-voltage circuit breaker, a high-voltage isolating switch and a high-voltage transformer are connected in sequence. The pantograph is in contact with the catenary, one end of the primary side of the high-voltage voltage transformer is connected between the pantograph and the high-voltage circuit breaker, and the other end is connected to the ground. The storage battery is connected to the secondary side of the high-voltage voltage transformer through the inverter and the insulation detection power supply contactor in sequence. The high-voltage transformer is connected with the rectifier, and a high-voltage chamber door is arranged between the high-voltage transformer and the rectifier. The high-voltage system includes interlock contacts for reflecting the switch state of the high-voltage chamber door. The insulation test of the high voltage system can only be carried out when the pantograph is in the bow state, the high voltage isolating switch is in the off state and the high voltage chamber door is in the closed state at the same time. The invention can solve the technical problem that the insulation damage of the high-voltage system causes the system to fail to work normally, and then causes the catenary to trip or even burn out the catenary, which affects 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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