摘要
高压断路器的金属短接时间是影响断路器开断能力的关键参量,直接影响断路器的关合和开断性能。合理控制金属短接时间对于保证断路器的开断能力以及整个电网的安全都有着重要的意义。通过分析高压断路器辅助开关的结构,提出了采用辅助开关实现的金属短接时间控制方案,建立了描述辅助开关操动特性的数学模型,并求解出延时时间为16.63 ms,根据理论分析对延时控制机构进行了优化,辅助开关延时特性的仿真计算通过了实验验证。
The close-open time of high voltage circuit breaker is a key parameter for affecting the breaking capacity.The reasonable control of close-open time has significant influence on breaking capacity of circuit breaker and safety of power grid.The structure of auxiliary switch of high-voltage circuit breaker was analyzed to put forward a proposal for controlling close-open time by auxiliary switch,establish a mathematical model to describe the auxiliary switch＇s operation characteristics and calculate the delay time,optimize the structure of controlling time delay which was based on theoretical analysis in this paper.The result of delay time is 16.63 ms,and the simulation of time delay characteristics is tested and verified by experiment finally.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2011年第15期121-126,共6页
Proceedings of the CSEE
基金
上海市重点学科建设项目资助(B004)~~
关键词
断路器
金短时间
辅助开关
延时
数学建模
circuit breaker
close-open time
auxiliary switch
time delay
mathematical modeling
