A Method for Reducing the Arrangement of Reactive Power Compensation Devices

Abstract

The invention discloses a method of reducing land occupation of a reactive compensation device layout. Reactive compensation devices are arranged in power distribution intervals of a transformer substation. Each active compensation device comprises a capacitor bank and a reactor group. At least one power distribution interval of one group of main transformers of the transformer substation is designed to be an interchange interval where not only the capacitor bank but also the reactor group can be arranged. During the operation process of the transformer substation, according to operation requirements, the capacitor bank and the reactor group are interchanged in the interchange interval. The method has the advantages that each group of main transformers can save an interval occupation of one low-voltage power distribution unit and reactive compensation equipment, occupation of four intervals can be saved if the number of groups of main transformers of the transformer substation is four, each group of main transformers can save one interval of switch equipment investment, and four intervals of switch equipment investment can be saved if the transformer substation is provided with four groups of main transformers.

Description

technical field [0001] The invention relates to the optimal design of the occupied area of ​​substations, in particular to a method for reducing the occupied area of ​​reactive power compensation devices. Background technique [0002] The 500kV substation in my country adopts 500kV / 220kV / 35(66)kV three-level voltage, and the low-voltage side of the main transformer is connected to the reactive power compensation device and the substation transformer, which is an important part of the substation. Among them, reactive power compensation devices mostly use shunt capacitor banks and shunt reactors switched in groups. [0003] Studies have shown that in a 500kV substation with compact equipment on the high and medium voltage sides, the low-voltage side of the main transformer occupies 26-31% of the total area of ​​the substation. Under normal circumstances, the practice of aligning the low-voltage shunt capacitor bank and shunt reactor required by the substation at one time incr...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the practice of aligning the low-voltage shunt capacitor bank and shunt reactor required by the substation at one time increases the land occupation of the low-voltage side area of ​​the main transformer and the corresponding equipment investment, resulting in uneconomical construction of the substation and large resources. waste

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