750 kV/ 220 kV电网电磁合环操作冲击电流分析与实践

doi:10.11930/j.issn.1004-9649.2016.11.008.06

中国电力 ›› 2016, Vol. 49 ›› Issue (11): 8-13.DOI: 10.11930/j.issn.1004-9649.2016.11.008.06

750 kV/ 220 kV电网电磁合环操作冲击电流分析与实践

李山¹, 李伟², 陈文涛¹, 何丹东¹, 张媛¹, 王建¹

1. 国网新疆电力科学研究院,新疆乌鲁木齐 830011;
2. 贵州理工学院电气工程学院,贵州贵阳 550003

收稿日期:2016-08-22 出版日期:2016-11-10 发布日期:2016-12-09
作者简介:李山（1983—）,男,江苏如皋人,硕士,高级工程师,从事电力系统分析、电磁暂态过电压研究。E-mail: lishan@sgcc.com.cn
基金资助:
国家电网公司2014年科技资助项目（5230HQ1403HT）和国家自然科学基金资助项目（51377175）

Analysis on Surge Current Characteristics of Electromagnetic Closed-Loop Operation in 750 kV/220 kV Power Grid

LI Shan¹, LI Wei², CHEN Wentao¹, HE Dandong¹, ZHANG Yuan¹, WANG Jian¹

1. State Grid Xinjiang Electric Power Research Institute, Urumqi 830011, China;
2. Electrical Engineering College, Guizhou Institute of Technology, Guiyang 550003, China

Received:2016-08-22 Online:2016-11-10 Published:2016-12-09
Supported by:
This work is supported by Science and Technology Project of SGCC(No. 5230HQ1303HT) and National Natural Science Foundation of China (No. 51377175).

摘要/Abstract

摘要： 为了分析超高压电网合环操作时冲击电流的影响作用,结合新疆750 kV巴州变电站750 kV/220 kV电网合环操作实例,简化电网建模并建立冲击电流模型,分析了影响冲击电流的主要因素（电压差、相角差和总阻抗）及对应关系,进而制定合环操作方案并顺利实现电网合环。结果表明,实测冲击电流特性与理论分析结论一致,对电网合环操作实践具有重要的理论指导和经验借鉴作用。

关键词: 合环操作, 冲击电流, 电网建模, 相角差, 总阻抗

Abstract: It is especially important to study the impact of surge current on electromagnetic closed-loop operation in the EHV power grid. Based on the 750 kV/220 kV closed-loop operation practice of the Xinjiang Bazhou 750 kV substation, a simplified model of surge current is established. The main factors that impact the surge current are analyzed, including voltage difference, phase angle difference and total impedance, and their relations with the surge current are studied. Furthermore, the scheme of closed-loop operation is formulated according to the grid structure of local power system so as to realize the operation. The measured characteristics of surge current are consistent with the theoretical conclusions, which can provide guidance for other grid closed-loop operations.

Key words: closed-loop operation, surge current, power grid modeling, phase angle difference, total impedance

中图分类号:

TM835

李山, 李伟, 陈文涛, 何丹东, 张媛, 王建. 750 kV/ 220 kV电网电磁合环操作冲击电流分析与实践[J]. 中国电力, 2016, 49(11): 8-13.

LI Shan, LI Wei, CHEN Wentao, HE Dandong, ZHANG Yuan, WANG Jian. Analysis on Surge Current Characteristics of Electromagnetic Closed-Loop Operation in 750 kV/220 kV Power Grid[J]. Electric Power, 2016, 49(11): 8-13.

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750 kV/ 220 kV电网电磁合环操作冲击电流分析与实践

Analysis on Surge Current Characteristics of Electromagnetic Closed-Loop Operation in 750 kV/220 kV Power Grid

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750 kV/ 220 kV电网电磁合环操作冲击电流分析与实践

Analysis on Surge Current Characteristics of Electromagnetic Closed-Loop Operation in 750 kV/220 kV Power Grid

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