摘要
10 kV配电站在适当的低负荷时段采用单变压器运行、低压侧母线互联的运行方式可有效减少配电变压器损耗。分析了配电站采用这一经济运行方式时负荷切换点的选择原则,提出了进行低压侧备用电源自动切换的原理和方法,并基于SEL-351系列继电器设计了该电源自动切换的实现方案。
In the proper low load period of 10 kV distribution substation,it will effectively reduce the loss of distribution transformer in the operation mode of single transformer and interconnection of low-voltage bus-bar.The selection principle of the load switching points in the economic operation mode of substation is analyzed,the theory and methods of bus-bar automatic transfer switch of low-voltage sides are submitted.The practical scheme of bus-bar automatic transfer switch with the relays of SEL-351 series is also designed.
出处
《供用电》
2010年第6期69-71,83,共4页
Distribution & Utilization
关键词
配电站
备用电源自动切换
供电可靠性
distribution substation
bus-bar automatic transfer switch
power supply reliability
