Influence of HVDC System Monopole Operartion on 500 kV AC Transformer

YE Jie-hong

doi:10.13296/j.1001-1609.hva.2011.10.021

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Influence of HVDC System Monopole Operartion on 500 kV AC Transformer

更新时间：2025-04-26

- Influence of HVDC System Monopole Operartion on 500 kV AC Transformer
- High VoltageApparatus Vol. 47, Issue 10, Pages: 111-114(2011)
- 作者机构：
  
  广东电网公司管理科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2011.10.021
  CLC： TM41
- Published：2011
- 稿件说明：
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[1]叶杰宏.直流单极运行对500kV交流变压器的影响[J].高压电器,2011,47(10):111-114.

YE Jie-hong. Influence of HVDC System Monopole Operartion on 500 kV AC Transformer[J]. High voltageapparatus, 2011, 47(10): 111-114.
[1]叶杰宏.直流单极运行对500kV交流变压器的影响[J].高压电器,2011,47(10):111-114. DOI： 10.13296/j.1001-1609.hva.2011.10.021.

YE Jie-hong. Influence of HVDC System Monopole Operartion on 500 kV AC Transformer[J]. High voltageapparatus, 2011, 47(10): 111-114. DOI： 10.13296/j.1001-1609.hva.2011.10.021.

摘要

随着高压直流输电技术的发展和西电东送规模的扩大

将会有越来越多的高压直流输电线路和换流站投入运行。当高压直流单极运行时

其大地回路直流电流会影响500 kV交流变压器的运行

例如:变压器噪音明显增大

出现过热现象

甚至引起变压器损坏。惠州电网目前有1个换流站

2个500 kV变电站

直流单极运行时会对该2个变电站的变压器造成不同程度的影响。笔者从理论上分析了高压直流输电单极运行时对500 kV交流变压器影响的原理

并结合目前惠州电网的情况提出几点抑制流入变压器中性点地中直流的措施。

Abstract

More and more HVDC lines and DC-AC converter substations will be put into operation due to the advancement of HVDC technology and the larger scale of the West-to-East power transmission project.When a HVDC system operates in monopole mode

some problems such as significant noise rise and overheating occur in 500 kV AC transformers

or even some transformers would be damaged.There are one DC-AC converter substation and two 500 kV transformer substations in Huizhou power grid.The transformers in the two substations would suffer different influences if the HVDC system monopole operates.In this paper

the principle of influence of HVDC system monopole operation on 500 kV AC transforme is analyzed in theory

and some suggestions about restraining the DC current flowing through transformer’s neutral point are offered considering the present condiction of Huizhou power grid.

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