A train over-phase converter

Abstract

The invention discloses a train phase separation passing converter comprising a base and multiple unit cabinets. Multiple unit cabinets are arranged on the base in parallel. Each unit cabinet comprises a cabinet body, an electric control component, a power module component, a support capacitor, a discharge resistance component, a contactor component, a resonance capacitor and a wiring component. Multiple support beams are arranged in the cabinet body. The electric control component, the power module component, the support capacitor and the electric control component are sequentially installedon the support beams of the cabinet body from top to bottom. The resonance capacitance and the electric control component are installed side by side and located on the rear side of the cabinet body. The discharge resistance component is installed on one side of the cabinet body in front of the contactor component. The wiring component is installed on the rear side of the contactor component. The train phase separation passing converter has the advantages of simple and compact structure, reasonable layout, good expansion performance, good heat dissipation performance and the like.

Description

technical field [0001] The invention mainly relates to the technical field of phase separation, in particular to a phase separation converter for trains. Background technique [0002] my country's electrified railway generally adopts single-phase power frequency AC system. In order to make the three-phase load of the power system as balanced as possible, the electrified railway often adopts the scheme of alternating phase sequence and phase-separated partition power supply. The adjacent power supply intervals at the phase-separation partition are divided by air or insulators to form insulating electrical phase separation, referred to as electrical phase separation or phase separation. This power supply method has the problem of excessive phase separation of train power failure, especially in heavy load and climbing sections, which reduces the running speed of the train and reduces the railway transportation capacity. During the operation, the train will pass through the pha...

AI Technical Summary

Problems solved by technology

During the operation, the train will pass through the phase-separation area frequently. During this process, if the train is not properly controlled, it will cause the train to be loaded into the phase-separation area, which will easily cause the train traction converter, traction transformer, pantograph and line catenary to burn. damage and other accidents, which seriously endanger the safety of the line and affect the normal operation of the train

The electrified railway traction power supply system has the characteristics of three-phase distribution asymmetry, impact, and nonlinearity for the external power system. Under the current grid conditions, when the train brakes, the braking energy doubled is directly fed back to the grid. It will lead to a more serious decline in the power quality of the power grid, which will become an important factor affecting the safe and stable operation of the power system and electric railway load, and the difficulty and cost of governance will also be greatly increased

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