A dual power supply automatic voltage regulation system and method based on a high-efficiency filter unit

Abstract

The invention discloses a dual power supply automatic voltage regulation system and method based on a high-efficiency filter unit. The on-load voltage regulation unit of the high-power plant transformer successively passes through the common box bus bar of the working power supply incoming line, the working power supply incoming line circuit breaker and the working power supply incoming line common The current transformer of the box bus is connected with the high-voltage bus, and the on-load voltage regulation unit of the start-up transformer is connected with the high-voltage bus through the common box bus of the backup power incoming line, the backup power incoming line circuit breaker and the backup power incoming line current transformer; The working power input line voltage transformer is arranged around the common box bus bar of the power supply line; Identify and filter bus voltage fluctuations caused by system voltage fluctuations and large-capacity auxiliary machine start-up and stop, and at the same time realize automatic adjustment of high-voltage bus voltage.

Description

A dual-power automatic voltage regulation system and method based on high-efficiency filter unit technical field The invention belongs to the technical field of automatic voltage regulation of power plants, relate to a kind of automatic dual power supply based on high-efficiency filter unit Pressure regulating system and method. Background technique [0002] The power plant usually sets the high-voltage power plant to meet the needs of the plant high-voltage load, and the plant power voltage is too high or too low. It will affect the normal operation of the factory auxiliary machine, and even affect the life of the auxiliary machine. Now, most power plants high-voltage plant transformers and start-up The standby transformers are equipped with on-load voltage regulation devices, so the power consumption of the plant can be kept within a reasonable range by adjusting the gear position of the transformers. around. In the early days, the voltage adjustment of the power p...

AI Technical Summary

Problems solved by technology

During the actual operation, the fluctuation of the system voltage and the start-up of large auxiliary machines will cause the fluctuation of the bus voltage, resulting in the frequent start-up of the on-load voltage regulating device and the frequent adjustment of the gear position

The on-load voltage regulating device will discharge slightly every time it is started, and the on-load oil filter must be started to filter oil once. Long-term frequent start-up will affect the life of the on-load voltage regulating device

Images