中国电机工程学报2024，Vol.44Issue(10)：3836-3849,中插8,15.DOI:10.13334/j.0258-8013.pcsee.223343
基于晶闸管的模块化组合式直流泄能装置及其协调控制策略
Modular Combination Type Dynamic Braking Resistor Based on Thyristors and Its Coordinated Control Strategy
摘要
Abstract
Aiming at the DC side over-voltage problem caused by the AC side fault at the receiving end of modular multilevel converter based high voltage direct current transmission(MMC-HVDC),this paper proposes a modular combination type dynamic braking resistor topology based on thyristor and its coordinated control method.The topology includes modular release energy release part,current limiting reactor and centralized energy release resistor.The sub-module working modes are introduced,the coordinated control strategy to flexibly regulate the energy release that can avoid repeated switching of dynamic braking resistor is proposed,the power control of dynamic braking resistor and its internal electrical coupling relationship are derived,and the design method of system parameters is given.Finally,based on PSCAD/EMTDC,the MMC-HVDC system and the proposed dynamic braking resistor are developed,and the device characteristics and over-voltage suppression effects under single-phase and three-phase ground faults are studied.The results show that the proposed dynamic braking resistor can effectively adjust the energy release flexibly in different stages with the coordinated control strategy,suppress the DC side over-voltage of MMC HVDC,and improve the fault recovery performances.关键词
模块化多电平换流器高压直流输电系统/直流泄能装置/直流过电压抑制/模块化组合/协调控制Key words
modular multilevel converter based high voltage direct current transmission(MMC-HVDC)/dynamic braking resistor/DC overvoltage suppression/modular combination/coordination control分类
信息技术与安全科学引用本文复制引用
郭春义,李佳硕,李春华..基于晶闸管的模块化组合式直流泄能装置及其协调控制策略[J].中国电机工程学报,2024,44(10):3836-3849,中插8,15.基金项目
国家自然科学基金(面上基金项目)(52277093).Project Supported by National Natural Science Foundation of China(General Program)(52277093). （面上基金项目）
