哈密电网变压器直流偏磁实测分析

doi:10.3969/j.issn.1000-7229.2015.02.013

摘要/Abstract

摘要： 为了研究±800 kV哈密—郑州直流（调度命名“天—中”直流）对哈密地区变压器直流偏磁的影响，首先通过仿真论证了偏磁的存在，其次重点通过实测哈密地区变压器中性点的直流电流分布情况，分析哈密—郑州直流投运对哈密地区变压器直流偏磁的影响，并提出了治理措施进行实测验证。测量结果显示，哈密—郑州直流的投运对哈密地区变压器直流偏磁的影响较大，经过采取变压器偏磁抑制措施，取得了改善变压器中性点直流电流分布的效果，具有较好的推广和应用价值。

关键词: 哈密电网, 变压器, 直流偏磁, 偏磁抑制

Abstract: To study the impacts of ±800 kV Hami-zhenzhou HVDC project on transformer DC magnetic bias in Hami power grid, firstly, the impact of the bias existence was demonstrated by simulation； then, the influence of Hami-zhenzhou HVDC operation on transformer DC magnetic bias in Hami area was analyzed, through the measured DC current distribution of transformer neutral point in Hami area； finally, the control measures were put forward and verified. The measurement results show that the operation of Hami-zhenzhou HVDC transmission has great influence on the transformer DC magnetic bias in Hami power grid； the DC current distribution of transformer neutral point can be improved with taking bias suppression measures for transformers, which has a good popularization and application value.

Key words: Hami power grid, transformer, DC magnetic bias, bias suppression

王建，陈文涛，李晓光，王衡，常喜强. 哈密电网变压器直流偏磁实测分析[J]. 电力建设, 2015, 36(2): 80-85.

WANG Jian, CHEN Wentao, LI Xiaoguang, WANG Heng, CHANG Xiqiang. Measurement Research on Transformer DC Magnetic Bias in Hami Power Grid[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(2): 80-85.

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