A three-phase integrated power transformer low-frequency heating power supply system and its operating method

Abstract

The invention discloses a three-phase integrated power transformer low-frequency heating power supply system and its operating method. The system includes: an incoming line circuit breaker, which is used to realize input and cut-off operations of the input power supply; an incoming line contactor and an outgoing line contactor, It is used to realize the remote switching operation of the power supply of the whole machine; the phase-shifting transformer is used to realize the input power boost and the multi-pulse rectification input power formation; the low-frequency inverter includes multiple sets of power units for Realize three-phase low-frequency output; automatic power-off system is used to realize automatic power-off when the temperature is too high or the circuit connection line fails, and protect the entire low-frequency heating power system; control system is used to realize the control of the incoming circuit breaker, On-off control of incoming line contactor, outgoing line contactor, phase-shifting transformer and low-frequency inverter. The invention can greatly reduce the power consumption of the heating capacity of the power supply, and can improve the heat dissipation efficiency.

Description

technical field [0001] The invention belongs to the technical field of transformers, and in particular relates to a three-phase integrated power transformer low-frequency heating power supply system and an operating method thereof. Background technique [0002] The power supply system of the transformer is composed of rectification equipment, DC power distribution equipment, battery pack, DC converter, rack power supply equipment, etc. and related power distribution lines. The power supply system provides various high and low frequency AC and DC power supplies for various motors to maintain the smooth operation of the motor system. [0003] When the existing power system is used, it must be ensured that the power system is in a dry environment to ensure the normal operation of the power system; most of the existing power systems are installed in a closed way, resulting in high temperature in the power system, power supply The connecting lines in the system are prone to agin...

AI Technical Summary

Problems solved by technology

[0003] When the existing power system is used, it must be ensured that the power system is in a dry environment to ensure the normal operation of the power system; most of the existing power systems are installed in a closed way, resulting in high temperature in the power system, power supply The connecting lines in the system are easy to age and cause line damage. In severe cases, it may cause the power system to collapse or generate electric sparks to damage the power system; in addition, the power system wiring is disordered and inconvenient to maintain.

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