线路变压器组接线变电所备用电源自投方案的研究与应用

Study and application on the operation program of the backup power switchover unit in the substations styling in line-transformer-connection

电力系统备用电源自投装置是当工作电源因故障或其他原因断开后,能迅速自动地启用备用电源,使工作电源被断开的用户不至于停电的一种自动装置;备用电源自动投切是为提高电网的安全、可靠运行所采取的一种重要措施。通过分析当前线路变压器组接线变电所的运行方式,提出了线路变压器组接线变电所各种运行方式下的备用电源自投方案。该方案采用有关母线电压和断路器位置作为判据,能够适应线路变压器组接线变电所的各种运行方式。

Backup Power Switchover Unit in electric power system is one of automation devices that will start up the backup power quickly and automatically to avoid the blackout. It＇s an important measure to improve the safety and stability of the power network. The running modes of the line-transformer-connection substation are analysed and the operation program of the Backup Power Switchover Unit suitable for all running modes is explored, based on the acquisition of the related bus voltage and the state of the break.