基于实时数字仿真器的特高压直流换流单元投退特性分析Analysis on Deblocking and Blocking Characteristics of UHVDC Commutation Units Based on Real-Time Digital Simulator
马玉龙;陶瑜;周静;郎鹏越;曹镇;
摘要(Abstract):
借助实时数字仿真器研究了特高压直流工程一极中单换流单元运行时在线投入另一个换流单元,或当一极中双换流单元运行时在线退出其中一个单换流单元的控制策略。研究结果表明:零功率解锁方式及小触发角解锁方式均可行,且零功率解锁方式下触发角约85°,而小触发角解锁方式下触发角不得低于70°;在线投入一组换流单元时,只要配合得当,整流侧先解锁、逆变侧后解锁和逆变侧先解锁、整流侧后解锁2种方式均可实现目标;从安全可靠、交直流系统扰动小等方面考虑,在线投入一组换流单元时可采用零功率解锁方式、整流侧先解锁,而在线退出一组换流单元时,逆变侧应先进行退出控制,以有利于整组换流单元的退出。
关键词(KeyWords): 特高压直流输电;换流单元;解锁;闭锁;实时数字仿真器
基金项目(Foundation):
作者(Author): 马玉龙;陶瑜;周静;郎鹏越;曹镇;
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DOI:
参考文献(References):
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