接有小电源的变电站备用电源自投装置逻辑改进

Substations Automatic Backup Power Device Logic Improvement with Small Power Supply

随着新能源技术的发展,接入变电站的小电源越来越多,在小电源的影响下,传统的备用电源自投装置(简称备自投)无流闭锁判据越来越不可靠,并且目前部分变电站采用的备自投动作联切小电源方案也不够合理。通过对某变电站备自投逻辑的分析,针对防止备自投误动和优化备自投联切方案,提出了两点改进措施,对提升客户的服务质量有重要的参考意义。

With the development of new energy technology,more and more small power sources are connected to substations.Under the influence of small power sources,the traditional criterion of no-current locking for automatic backup power is becoming more and more unreliable,and the scheme of standby auto-switching operation combined with small power supply used in some substations is not reasonable.Based on the analysis of a substation's automatic backup power logic,this paper puts forward two improvement measures to prevent the misoperation of automatic backup power and optimize the automatic backup power scheme.