摘要
根据2座110 kV单母三分段接线变电站组成的供电系统的特点,对其备自投方式的选择、多套备自投之间的配合、备自投的动作逻辑、闭锁备自投的保护进行分析,并优化备自投的动作逻辑,以满足供电系统的特殊运行方式。在2回线路故障的情况下,所提备自投方案能实现备自投动作后不损失主变负载,最后给出实现该方案需要注意的事项。
According to characteristic of a power supply system composed of two 110 k V three-sectioned single busbar connection substations,the selection of backup power automatic switching device mode,the cooperation among multiple sets of backup power automatic switching devices,the action logic of backup power automatic switching device,the protection of blocking backup power automatic switching device are analyzed,and the action logic of backup power automatic switching device is optimized to meet the special operation mode of power supply system.In the case of two circuit line fault,the proposed backup power automatic swiching scheme can realize no loss of main transformer load after the operation of backup power automatic swiching device.Finally,the precautions for realizing the scheme are given.
作者
闫石
YAN Shi(Shenzhen Airport(Group)Co.,Ltd.,Shenzhen 518103,China)
出处
《黑龙江电力》
CAS
2020年第4期298-307,共10页
Heilongjiang Electric Power
关键词
110
kV变电站
单母三分段接线
继电保护
备自投
动作逻辑
110 kV substation
three-sectioned single busbar connection
relay protection
backup power automatic switching device
action logic
