中国电力 ›› 2015, Vol. 48 ›› Issue (7): 8-12.DOI: 10.11930.2015.7.8

• 电网-特高压直流输电专栏 • 上一篇    下一篇

特高压换流变现场局部放电试验的电场计算及起晕校核

谢齐家1,普子恒2,汪涛1,张亚东2,杜志叶2   

  1. 1. 国网湖北省电力公司电力科学研究院 国网高压电气设备现场试验技术重点实验室,湖北 武汉 430077;2. 武汉大学 电气工程学院,湖北 武汉 430071
  • 收稿日期:2015-03-11 出版日期:2015-07-25 发布日期:2015-11-26
  • 作者简介:谢齐家(1982—),男,湖北阳新人,博士,工程师,从事特高压设备试验技术研究工作。E-mail: xeqja@163.com
  • 基金资助:
    国家重点基础研究发展计划(973计划)资助项目(2011CB209404)

The Corona Control Study of Field Partial Discharge Test of UHVDC Converter Transformer

XIE Qijia1, PU Ziheng2, WANG Tao1, ZHANG Yadong2, DU Zhiye2   

  1. 1. State Grid Key Laboratory of On-site Test Technology on High Voltage Power Apparatus, State Grid Hubei Electric Power Research Institute, Wuhan 430077, China;
    2. School of Electrical Engineering, Wuhan University, Wuhan 430072, China
  • Received:2015-03-11 Online:2015-07-25 Published:2015-11-26
  • Supported by:
    This work is supported by the National Basic Research Program of China (973 Program) (No. 2011CB209404).

摘要: 为研究特高压换流变压器现场局部放电试验的电晕控制策略,根据哈密南站换流变压器试验布置方式,建立3D模型,选取试验时最高电位进行加载,利用有限元法计算得到不同试验方式下各设备的电场分布云图及最大场强值。并根据经验公式以及阀厅金具球起晕场强试验数据进行了起晕场强校核。计算结果表明,在当前试验方案下,采用的试验设备尺寸均有较大的裕度,满足局部放电试验的电晕控制要求。

关键词: 特高压直流, 换流变压器, 局部放电试验, 电场计算, 电晕控制

Abstract: In order to study the corona control of UHVDC converter transformer field partial discharge test, a 3D model is established according to the test arrangement. The highest test potential is applied on the model and electric field distribution as well as maximum electric field strength on different test equipment are obtained by finite element analysis. The corona onset value is verified according to empirical formula and grading ball test in valve hall. The calculation results show that equipment design size has enough safety margin under field test scheme and meets corona control requirements of partial discharge test.

Key words: UHVDC, converter transformer, partial discharge test, electric field calculation, corona control

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