| 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 |
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| 引用本文： | 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. DOI: 10.11930/j.issn.1004-9649.201608065 |
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| 作者姓名： | 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 |
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| 作者单位： | 1. 电网安全与节能国家重点实验室（中国电力科学研究院）,北京 100192; 2. 中国电力技术装备有限公司,北京 100052; 3. 国网冀北电力公司,北京 100053 |
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| 基金项目： | 国家电网公司科技项目（SGNX0000DKJS1500066） |
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| 摘 要： | 特高压直流工程送端换流站的联络变空载充电时产生的励磁涌流,使得换流站交流母线电压出现畸变,引发谐波进入直流系统。谐波将导致直流电压、电流以及功率波动,尤其是直流电流的谐波严重时,可能导致直流系统谐波保护告警甚至动作,影响特高压直流的安全稳定运行。基于系统实际条件,研究了天山换流站在不同操作方式下对新建750/500 kV联络变充电时的励磁涌流特性,评估了其对±800 kV哈密—郑州特高压直流谐波保护的影响,提出了联络变充电时的安全措施建议。研究成果为确保哈郑特高压直流的安全运行提供了技术依据,并可为其他类似工程提供参考。
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| 关 键 词： | 特高压直流 联络变 励磁涌流 谐波保护 对策措施 |
| 收稿时间： | 2016-08-11 |
| 修稿时间： | 2017-05-16 |
Study on Influence of Coupling Transformer Charging Inrush Current to Hami-Zhengzhou UHV DC Project |
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| ZHENG Bin,YANG Peng,TENG Wentao,BAN Liangeng,XIANG Zutao,WU Yani,ZHANG Yuanyuan,LUO Lishi,PAN Yifei. Study on Influence of Coupling Transformer Charging Inrush Current to Hami-Zhengzhou UHV DC Project[J]. Electric Power, 2017, 50(12): 130-135. DOI: 10.11930/j.issn.1004-9649.201608065 |
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| Authors: | ZHENG Bin YANG Peng TENG Wentao BAN Liangeng XIANG Zutao WU Yani ZHANG Yuanyuan LUO Lishi PAN Yifei |
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| Affiliation: | 1. State Key Laboratory of Power Grid Safety and Energy Conservation(China Electric Power Research Institute), Beijing 100192, China; 2. China Electric Power Equipment and Technology Co., LTD, Beijing 100052, China; 3. State Grid Jibei Electric Power Company Limited, Beijing 100053, China |
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| 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 voltage 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. |
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| Keywords: | UHV DC project coupling transformer inrush current harmonic protection countermeasure |
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