摘要
针对"通用设计"中330 kV变电站电流互感器的配置方案存在保护死区的问题,通过分析电流互感器的工作特性,提出在1个半断路器接线(3/2接线)方式中,增加电流互感器绕组数量和主变压器保护采用TPY级电流互感器等项改进措施。结果表明:改进措施能够有效防止事故范围进一步扩大,保障电网安全稳定运行,减少电网企业和用户的经济损失。
Aiming at the problem of protection blind area existing in configuration schemes of current transformer of 330 kV substation in general design, by analyzing the characteristics of current transformer, puts forward improvement measures such as to increase number of current transformer winding, adopt TPY level current transformer for the main transformer protection in one and a half circuit breaker connection （3/2 connection） mode, etc. The result shows that the improvement measures can effectively prevent the accident scope spreading, guarantee the power grid safe and reliable operation, reduce economic loss of power grid enterprises and customers.
出处
《宁夏电力》
2014年第4期1-4,共4页
Ningxia Electric Power
关键词
智能变电站
1个半断路器接线
3/2接线
电流互感器
保护死区
smart substation
one and a half circuit breaker connection
3/2 connection
currenttransformer, protection blind area
