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随着电力系统对变电所所用电供电可靠性要求的不断提高,备用电源自投装置(以下简称“备自投装置”)作为一种价格低、可有效提高供电可靠性的措施,其应用已越来越广泛。备自投装置既提高了供电安全可靠性,同时缩小了停电范围,有效保证了用户用电的持续稳定。针对日月山750kV变电所分析了三种备自投装置的功能和特点,对变电所400V的固定电气联结方式和备投方式,选出最适合的备自投装置。
With the continuous improvement of the power system reliability requirements for the substations, the backup power supply self-throwing device (hereinafter referred to as “self-throwing device”) is a low-cost measure that can effectively improve the reliability of power supply , Its application has become more and more widespread. Prepared self-throwing devices not only improve the safety and reliability of power supply, while reducing the scope of power outages, effectively ensuring the user’s electricity stability. For the Riyue Mountain 750kV substation, the functions and characteristics of the three kinds of self-throwing devices are analyzed. The most suitable self-throwing device is selected for the fixed electrical connection and standby mode of the substation 400V.