Optimal configuration method of DC magnetic bias treatment device

Abstract

The invention relates to an optimal configuration method of a DC magnetic bias treatment device. The optimal configuration method comprises the steps of determining an optimal configuration target function of the DC magnetic bias treatment device; determining a DC grounding current of a node in a power grid and a configuration condition of the DC magnetic bias treatment device; determining a DC current correlation intensity of the node; and optimizing the configuration condition of the DC magnetic bias treatment device based on the optimal configuration target function of the DC magnetic bias treatment device and the DC current correlation intensity of the node. The optimal configuration method of the DC magnetic bias treatment device is based on the concept of the correlation intensity, and is to sequence nodes of an AC system according to the correlation intensities obtained through calculation and enable devices at the nodes with weak correlation intensities in the existing initial configuration scheme to be retreated successively, so that the number of the DC magnetic bias treatment devices is greatly reduced.

Description

technical field [0001] The invention relates to the field of UHV DC, in particular to an optimal configuration method of DC bias control equipment. Background technique [0002] In order to solve the DC bias problem of the AC system transformer near the UHV DC grounding pole, the method of connecting the DC bias control equipment to the neutral point of the grounded AC system transformer is generally used to suppress or isolate the DC current. The configuration of the DC bias control equipment is determined according to the actual engineering measurement value or simulation calculation of the neutral point DC current of the transformer. [0003] The distribution of DC current in the AC system determines the configuration of the suppression bias equipment, and the switching on and off of the DC bias control equipment directly affects the distribution of DC current in the AC system. The two are interrelated. In the process of configuring equipment, the switching on and off of...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the DC bias control equipment configuration scheme obtained by simply calculating or measuring the DC current distribution can achieve the purpose of reducing the DC current at the neutral point of the transformer. However, there is a possibility of redundant configuration of the equipment

In addition, the DC bias control equipment is expensive and requires the maintenance and management of on-site operation and maintenance personnel. Once the equipment operates abnormally, the operation reliability of the equipment may also affect the operation of the AC power grid.

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