中国电机工程学报2025，Vol.45Issue(12)：4843-4857,中插27,16.DOI:10.13334/j.0258-8013.pcsee.241053
多源自适应换相换流器运行控制策略研究
Research on Operation Control Strategy of Self-adaption Statcom and Line Commutation Converter
摘要
Abstract
The self-adaption statcom and line commutation converter(SLCC)employs static var generator(SVG)to dynamically compensate reactive power and harmonic of converter station.This system reduces current stress on the converter transformer,enhances the inverter station's ability to withstand commutation failure,mitigates transient overvoltage on the sending-end busbar,and reduces the land area required for the converter station.In this paper,the topological structure and working principle of SLCC are described,and then the technical advantages of its multi-source composite characteristics are analyzed.After that,the mathematical model of SLCC-HVDC is established by analogy with LCC high voltage direct current(HVDC).On this basis,a constant current control strategy with dual detection under normal operating conditions and a constant voltage control strategy with current limiting under fault conditions are adopted to fully leverage the advantages of SLCC in terms of flexibility,controllability,and rapid response compared to LCC.Then,based on the degree of drop in the effective value of the bus phase voltage at the converter station,flexible switching between the two control modes of SLCC is achieved to ensure that SLCC-HVDC has excellent response characteristics.Finally,the simulation results on the PSCAD/EMTDC platform validate the accuracy of the theoretical analysis and the effectiveness of the operational control strategy.关键词
多源自适应换相换流器/无功补偿/谐波滤除/换相失败/运行控制策略Key words
self-adaption statcom and line commutation converter(SLCC)/reactive power compensation/harmonic filtering/commutation failure/operation control strategy分类
动力与电气工程引用本文复制引用
贾冠龙,刘政权,张哲,陈敏,许烽,牛峰..多源自适应换相换流器运行控制策略研究[J].中国电机工程学报,2025,45(12):4843-4857,中插27,16.基金项目
国家自然科学基金项目(青年基金)(52307199) （青年基金）
河北省省级科技计划资助(21567605H). Project Supported by National Natural Science Foundation of China(Young Project)(52307199) （21567605H）
S&T Program of Hebei(21567605H). （21567605H）
