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

作　　者：高熠莹 韩奕[1] 刘昕宇 徐政[2] 张尚 张玉红[1] Gao Yiying;Han Yi;Liu Xinyu;Xu Zheng;Zhang Shang;Zhang Yuhong(China Electric Power Research Institute,Beijing 100192,China;College of Electric Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[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

出　　处：《太阳能学报》2022年第8期17-23,共7页Acta Energiae Solaris Sinica

基　　金：国家电网公司科技项目(202055128A)。

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。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.

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 

分 类 号：TM744[电气工程—电力系统及自动化]