摘要
为了适应国家“碳达峰、碳中和”的发展需求,研制具有结构简单、环境适用范围广、免维护和可靠性高等优点的开关设备是发展第三代环保智能变电站的产品基础。文中以72.5 kV真空断路器为研究对象,通过有限元仿真分析确定了真空灭弧室关键零部件的具体尺寸、动静触头开距和动静触头类型,并对断路器主回路进行温升仿真校核,计算结果表明,新设计的72.5 kV真空断路器具有额定通流3 150 A和开断40 kA故障电流的能力,各项型式试验的顺利通过验证了72.5 kV真空断路器结构设计的合理性。
In order to meet the development needs of“carbon peaking and carbon neutrality”in China,the development of switchgear with such advantages as simple structure,wide range of environmental applications,maintenancefree and high reliability is the base for the development of the third generation of environmentally friendly intelligent substations. 72.5 kV vacuum circuit breaker is taken as the research object in this paper,the specific dimensions of the key parts of the vacuum interrupter,the clearance and type of dynamic and static contacts are determined through finite element simulation analysis,and the temperature rise simulation verification of the main circuit of the circuit breaker is carried out. The calculation results show that the newly designed 72.5 k V vacuum circuit breaker has the ability of rated current at 3 150 A and the breaking fault current at 40 kA. The various positive type tests verify the rationality of the structural design of the 72.5 kV vacuum circuit breaker.
作者
姚灿江
孙龙勇
刘英英
YAO Canjiang;SUN Longyong;LIU Yingying(Henan Pinggao Electric Co.,Ltd.,Henan Pingdingshan 467001,China)
出处
《高压电器》
CAS
CSCD
北大核心
2023年第2期23-30,36,共9页
High Voltage Apparatus
基金
平高集团有限公司科技项目资助(72.5kV环保型柱式断路器的研制)。
关键词
真空灭弧室
绝缘特性
磁场强度
温升
型式试验
vacuum interrupter
insulation properties
magnetic field strength
temperature rise
type test
