摘要
多断口串联断路器的同步控制是直流开断领域的关键技术之一。本研究以双模块、四断口的110 kV直流真空断路器为研究背景,从双断口高压直流开断模块的设计出发,分析了各串联断口分合闸动作的时间离散性;提出了断路器整机同步控制要求和多模块、多断口的同步参数,给出了直流分断同步误差的允许范围。采用智能算法动态补偿断口间的同步误差,模块间采用光纤信号传输,以避免电磁干扰。为验证同步控制系统的有效性,对三断口断路器分闸操作的同步误差进行了测试。试验和分析结果表明,60 kV双断口模块和110 kV双模块样机的分断时间在同步误差范围内,模块样机能满足高压直流(HVDC)断路器机械参数的要求。最后提出模块冗余的概念,提出了额定需求模块数N+1的模块冗余设计可靠性指标,为真空断路器在更高电压等级系统中的应用提供了技术支持。
Synchronous control of circuit breaker with multi-breaks in series is one of the key technologies in direct current(DC)interruption field.In this study,a 110 kV DC vacuum circuit breaker with double modules and four breaks is taken as the research background.By the design of double-break high voltage DC(HVDC)breaking module,the time dispersion of opening and closing action of each series break is analyzed.The synchronization requirements of the whole circuit breaker and the synchronization parameters between multiple modules and multiple breaks are proposed,and the allowable range of DC breaking synchronization error is given.The intelligent algorithm is used to dynamically compensate the synchronous error between the breaks,and the optical fiber signal connection is used between modules to avoid electromagnetic interference.In order to verify the effectiveness of the synchronous control system,the synchronous error in opening operation of a vacuum circuit breaker with three breaks is tested.The test and analysis results show that the synchronous error range of 60 kV module with double break and 110 kV prototype with double modules can meet the requirements of mechanical parameters of HVDC circuit breaker.Finally,the concept of module redundancy is proposed,and the reliability index of rated demand of module numbers N+1 module redundancy design is proposed,which provides technical support for the application of vacuum circuit breaker in higher voltage level system.
作者
邹积岩
梁德世
黄翀阳
刘芮彤
ZOU Jiyan;LIANG Deshi;HUANG Chongyang;LIU Ruitong(School of Electrical Engineering,Dalian University of Technology,Dalian 116024,China;School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China;State Grid Liaoning Electric Power Research Institute,Shenyang 110006,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2020年第8期2627-2634,共8页
High Voltage Engineering
基金
国家电网公司科技项目(0711–160TL14711127).
关键词
直流断路器
真空开关
光控模块
串联开断
同步控制
DC circuit breaker
vacuum switches
fiber-controlled module
interruption in series
synchronous control
作者简介
通信作者:邹积岩,1954—,男,博士,教授,博导,主要从事智能化开关电器理论及应用、高电压新技术及其应用、电力设备智能检测等研究工作,E-mail:jyzou@dlut.edu.cn;梁德世,1988—,男,博士生,主要从事高压直流真空断路器及其开断试验技术的研究工作,E-mail:liangdeshi@mail.dlut.edu.cn;黄翀阳,1990—,男,博士生,主要从事现代高电压电器设计及应用的研究工作,E-mail:409173151@qq.com;刘芮彤,1988—,女,工程师,主要从事电力系统自动化的研究工作,E-mail:41300743@qq.com。
