短路电流计算外网等值方法研究及应用

doi:10.11930/j.issn.1004-9649.201711078

中国电力 ›› 2018, Vol. 51 ›› Issue (12): 56-62.DOI: 10.11930/j.issn.1004-9649.201711078

短路电流计算外网等值方法研究及应用

杨金刚, 何成明, 李顺昕, 史智萍, 李笑蓉, 石少伟

国网冀北电力有限公司经济技术研究院, 北京 100038

收稿日期:2017-11-13 修回日期:2018-06-14 出版日期:2018-12-05 发布日期:2018-12-13
作者简介:杨金刚(1982-),男,博士,高级工程师,从事电力系统安全稳定分析和电网规划技术研究,E-mail:eejgyang@sina.com;何成明(1986-),男,博士,高级工程师,从事电力系统规划、风力发电与并网技术研究,E-mail:sduhcm@163.com
基金资助:
国家重点研发计划资助项目（与储能联合的大规模可再生能源交直流混联送出系统构建关键技术研究，2016YFB0900501）；国网冀北电力有限公司研究开发项目（适应大规模、多类型电源接入及送出的电网规划技术研究，52018F160002）。

Research and Application of External Network Equivalent Method in Short Circuit Current Calculation

YANG Jingang, HE Chengming, LI Shunxin, SHI Zhiping, LI Xiaorong, SHI Shaowei

State Grid Jibei Electric Economic Research Institute, Beijing 100038, China

Received:2017-11-13 Revised:2018-06-14 Online:2018-12-05 Published:2018-12-13
Supported by:
This work is supported by National Key Research and Development Program of China (Research on the Key Technique of AC/DC Interconnected Power Transmission System Used on the Large-Scale Renewable Energy Generation and Energy Storage, No.2016YFB0900501) and Research and Development Program of State Grid Jibei Electric Power Company Limited (Research on the Power Grid Planning Technology Adapt to the Large-Scale and Various Power Generation, No.52018F160002).

摘要/Abstract

摘要： 随着电网规模的不断扩大，短路电流计算耗时逐渐增加，并且对计算软件的要求也不断提高，为提高短路电流计算效率，研究了一种适用于地区短路电流计算的外网数据等值方法，首先对全网的节点导纳矩阵进行等值化简，形成边界区域的新增注入元素，然后构造出仅包含研究区域和边界区域的简化电网模型，用于研究区域内的短路电流计算，并从理论上分析了该等值方法的效果与优势。在IEEE 39节点系统上对所提方法进行了验证，证明了所提方法的正确性和有效性，最后以华北电网为实例进行了外网等值简化，形成某一地区的短路计算用电网数据，大大降低了电网规模，能有效提高该地区短路电流计算的效率。

关键词: 短路电流, 网络等值, 节点导纳矩阵, 网络重构

Abstract: The time consuming of short circuit current calculation increases with the development of the power grid scale, and the requirement for computation software is enhanced. An external equivalent method is introduced for calculation of the short circuit current in order to improve the calculation efficiency. Firstly, the node admittance matrix of the whole power network is equivalently simplified to form the additional elements of the boundary region. And then a simplified power network composed of the study region and boundary region is constructed to calculate the short circuit current in the study region. The validity and efficiency of this proposed algorithm is theoretically analyzed and verified on the IEEE 39-node power system. Finally, the North China power grid is used as an example for external equivalent simplification to form the short circuit calculation data of a certain area, which greatly reduces the scale of the power system and improves the calculation efficiency of short circuit current.

Key words: short circuit current, network equivalent, node admittance matrix, network reconfiguration

中图分类号:

TM744

杨金刚, 何成明, 李顺昕, 史智萍, 李笑蓉, 石少伟. 短路电流计算外网等值方法研究及应用[J]. 中国电力, 2018, 51(12): 56-62.

YANG Jingang, HE Chengming, LI Shunxin, SHI Zhiping, LI Xiaorong, SHI Shaowei. Research and Application of External Network Equivalent Method in Short Circuit Current Calculation[J]. Electric Power, 2018, 51(12): 56-62.

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短路电流计算外网等值方法研究及应用

Research and Application of External Network Equivalent Method in Short Circuit Current Calculation

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短路电流计算外网等值方法研究及应用

Research and Application of External Network Equivalent Method in Short Circuit Current Calculation

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