摘要
笔者采用Excel计算了直流时间常数为150 ms时的非对称电流的零点以及其他参数,推导出不接地系统非对称电流后开相的电流表达式。通过对IEC 62271-37-013和GB 1984—2003相关电流参数的计算和比较,笔者认为讨论中的IEC 62271-37-013在非对称电流试验方法上更接近实际,因为它将后开相的电流参数也考虑在内。
The current parameters of asymmetrical current breaking of a generator circuit breaker are calculated with the DC time constant of 150 ms via Microsoft Excel and dichotomy. By analyzing the alternative and direct components ,the current formula for last-pole-to-clear condition is derived. According to the calculation of the current parameters and the comparison between the standards IEC 62271-37-013 and GB/T 1984-2003 for generator circuit break （GCB） asymmetrical current tests,it is concluded that the IEC 62271-37-013 under discussion is more reasonable as it takes the current parameters for last-pole-to-clear condition into consideration.
出处
《高压电器》
CAS
CSCD
北大核心
2013年第9期113-118,共6页
High Voltage Apparatus
关键词
发电机断路器
非对称电流
燃弧时间
标准
generator circuit breaker
asymmetrical current
arcing time
standard
