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[1]武健,王蕊,张彩红,等.并联型 MMC-MTDC 系统直流故障特性分析 及保护策略[J].电机与控制学报,2016,20(09):103-109.[doi:10. 15938 / j. emc. 2016. 09. 015]
 WU Jian,WANG ui,ZHANG Cai-hong,et al.DC fault analysis and protection design in shunt modular multilevel based MTDC system [J].,2016,20(09):103-109.[doi:10. 15938 / j. emc. 2016. 09. 015]
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并联型 MMC-MTDC 系统直流故障特性分析 及保护策略(PDF)
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
20
期数:
2016年09
页码:
103-109
栏目:
出版日期:
2016-09-01

文章信息/Info

Title:
DC fault analysis and protection design in shunt modular multilevel based MTDC system
作者:
武健 王蕊 张彩红 徐殿国
( 哈尔滨工业大学 电气学院,黑龙江 哈尔滨 150001)
Author(s):
 WU Jian WANG Rui ZHANG Cai-hong XU Dian-guo
( Department of Electrical Engineering,Harbin Institute of Technology,Harbin 150001,China)
关键词:
多电平模块化换流器 直流输电 直流短路故障 电压裕度控制
Keywords:
modular multilevel converter high voltage direct current transmission DC fault voltage margin control method
分类号:
TN 911. 22
DOI:
10. 15938 / j. emc. 2016. 09. 015
文献标志码:
A
摘要:
模块化多电平换流器( modular multilevel converter,MMC) 多用于基于高压直流输电( high voltage direct current transmission,HVDC) 的多端输电系统。针对该系统中直流电缆或架空线路的 意外短路或断路故障,影响输电线路和换流站安全的问题,提出一种基于三端电压裕度控制下的旁 路晶闸管和直流侧 IGBT 断路器( IGBT-Circuit Breaker) 的混合保护方案。分析了子模块闭锁前直 流电流超调的数学模型及故障机理,根据直流短路电流的峰值及上升时间动态特性,选取了 MMC 的参数。利用仿真软件 PSCAD / EMTDC 对控制方法及保护策略的效果进行验证,结果表明剩余系 统主站切换及时,能够持续隔离发生永久故障的线路,使得其余线路继续运行,实现了系统直流故 障时及时保护,提高了系统稳定性。
Abstract:
 Modular multilevel converters ( MMC) are suitable for the high voltage direct current ( HVDC) transmission in multi-terminal DC systems. However,the accidental dc faults in the cable or overhead lines in multi-terminal DC system,could give rise to safety concerns on transmission lines and converter stations. In order to solve the problem,a hybrid protection scheme was proposed based on the three termi-nal voltage margin which controls the bypass thyristor and IGBT circuit breaker at DC side. The Mathe-matical model and fault mechanism of DC current overshoot before sub module locking was studied,and the parameters used for MMC were selected by analysing the dynamic characteristics in the rise time and the peak of DC short circuit current. In addition,the effectiveness of the control method and the protection strategy is verified by using the simulation software PSCAD / EMTDC,the results showing that the main station of the residual system is switched in time,and the permanent fault line can be isolated,so that the remaining lines continue to operate,and the system can be protected timely,so the stability of the system is improved.

参考文献/References:

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 SHANG Rong-yan,PENG Chang-qing,LUO Long-fu.Impacts of inductive filtering on the commutation reactance of novel converter transformer[J].,2011,(09):35.
[2]邓军,肖遥,楚金伟,等. 特高压直流线路可听噪声的边界元方法[J].电机与控制学报,2013,(09):17.
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备注/Memo

备注/Memo:
收稿日期: 2014 - 09 - 29
基金项目: 国家自然科学基金( 51407043) ; 台达电力电子科教发展基金( DREM2014015)
作者简介: 武 健( 1979—) ,男,博士,讲师,研究方向为电网品质管理与多端直流输电;
王 蕊( 1992—) ,女,硕士,研究方向为多端直流输电;
张彩红( 1991—) ,女,硕士,研究方向为多端直流输电;
徐殿国( 1960—) ,男,博士,教授,研究方向为电力电子技术与电机控制技术。
更新日期/Last Update: 2016-12-08