中国电力2017，Vol.50Issue(12)：130-135,6.DOI:10.11930/j.issn.1004-9649.201608065
换流站联络变充电励磁涌流对哈郑特高压直流运行影响分析
Study on Influence of Coupling Transformer Charging Inrush Current to Hami-Zhengzhou UHV DC Project
摘要
Abstract
Inrush current during charging of coupling transformer in UHV DC converter station results in converter AC bus voltage distortion and harmonics in DC system.The harmonics are dominated by second and third order harmonic.Harmonic leads to DC voltage,current and power fluctuations and especially system overvoltage,which may result in DC power system harmonic protection alarm and even action in severe cases.It affects safe and stable operation of UHV DC project.Based on practical system condition,charging inrush current and vohage harmonic characteristics of two expansion groups of 750/500 kV coupling transformers in Tianshan converter station are studied.The influence on harmonic protection of Hami-Zhengzhou ±800 kV UHV DC project is investigated and suggestions on safety measures for coupling transformers energizing are proposed.The results provide effective countermeasures to ensure safe operation of Hami-Zhengzhou UHV DC project.These results also offer useful reference and guidance for other similar projects.关键词
特高压直流/联络变/励磁涌流/谐波保护/对策措施Key words
UHV DC project/coupling transformer/inrush current/harmonic protection/countermeasure分类
信息技术与安全科学引用本文复制引用
郑彬,杨鹏,滕文涛,班连庚,项祖涛,吴娅妮,张媛媛,骆立实,潘一飞..换流站联络变充电励磁涌流对哈郑特高压直流运行影响分析[J].中国电力,2017,50(12):130-135,6.基金项目
国家电网公司科技项目(SGNX0000DKJS1500066)This work is supported by Science and Technology Project of State Grid Corporation of China (No.SGNX0000DKJS1500066). （SGNX0000DKJS1500066）
