含MMC交直流输电系统短路电流计算方法

doi:10.19912/j.0254-0096.tynxb.2021-0009

太阳能学报 ›› 2022, Vol. 43 ›› Issue (8): 17-23.DOI: 10.19912/j.0254-0096.tynxb.2021-0009

含MMC交直流输电系统短路电流计算方法

高熠莹¹, 韩奕¹, 刘昕宇², 徐政², 张尚¹, 张玉红¹

1.中国电力科学研究院,北京 100192;
2.浙江大学电气工程学院,杭州 310027

收稿日期:2021-01-04 出版日期:2022-08-28 发布日期:2023-02-28
通讯作者: 徐政（1962—）,男,博士、教授,主要从事大规模交直流电力系统分析、直流输电与柔性交流输电、风力发电技术与风电场并网技术方面的研究。xuzheng007@zju.edu.cn
基金资助:
国家电网公司科技项目（202055128A）

SHORT-CIRCUIT CURRENT CALCULATION METHOD FOR AC/DC POWER TRANSMISSION SYSTEMS WITH MMC

Gao Yiying¹, Han Yi¹, Liu Xinyu², Xu Zheng², Zhang Shang¹, Zhang Yuhong¹

1. China Electric Power Research Institute, Beijing 100192, China;
2. College of Electric Engineering, Zhejiang University, Hangzhou 310027, China

Received:2021-01-04 Online:2022-08-28 Published:2023-02-28

摘要/Abstract

摘要： 该文基于模块化多电平换流器（MMC）的工作原理和暂态特性,对比了故障时MMC输出的短路电流与同步机电源输出的短路电流的异同,提出MMC短路电流计算模型。在分析MMC参与交流系统短路电流计算的机理后,提出采用叠加原理的含MMC电网短路电流的迭代计算方法,最后,基于PSCAD/EMTDC验证了该文所提算法的有效性。

关键词: 模块化多电平换流器, 短路电流, 暂态特性, 交直流输电系统, 电流源, 迭代计算

Abstract: Based on the operating principles and transient characteristics of MMC （Modular Multilevel Converter）, by comparing the short-circuit current of MMC and synchronous generators, and the short-circuit current calculation model of MMC is proposed. After analyzing the mechanism of MMC participating in the calculation of AC system short-circuit current, based on superposition principle, an iterative algorithm for short-circuit current of power grid with MMC is proposed. Finally, based on PSCAD/EMTDC, the effectiveness of the proposed calculation method is verified.

Key words: modular multilevel converter, short circuit currents, transient characteristics, AC/DC power transmission systems, current source, iterative algorithm

中图分类号:

TM744

高熠莹, 韩奕, 刘昕宇, 徐政, 张尚, 张玉红. 含MMC交直流输电系统短路电流计算方法[J]. 太阳能学报, 2022, 43(8): 17-23.

Gao Yiying, Han Yi, Liu Xinyu, Xu Zheng, Zhang Shang, Zhang Yuhong. SHORT-CIRCUIT CURRENT CALCULATION METHOD FOR AC/DC POWER TRANSMISSION SYSTEMS WITH MMC[J]. Acta Energiae Solaris Sinica, 2022, 43(8): 17-23.

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含MMC交直流输电系统短路电流计算方法

SHORT-CIRCUIT CURRENT CALCULATION METHOD FOR AC/DC POWER TRANSMISSION SYSTEMS WITH MMC

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