考虑山区小水电的智能型备自投装置的研究

针对小水电地区传统备自投存在的不足之处：长时间等待母线失压，以解列所有小电源为代价，恢复供电需要很长时间，在研究自动捕捉准同期、高周切机等原理基础上，提出了一种适用于小电源地区的智能型备自投方案，即在枯水期选择快速联切水电的备自投模式；在丰水期则选择为高频逐轮切机、准同期合闸的备自投模式，以达到快速恢复地区供电的目的。该方案已在备自投装置中实现，并利用近几年的故障录波数据以及电网运行参数对装置进行了模拟实验。实验证明，这种智能型备自投的使用能有效地提高电网安全稳定性和供电可靠性。

Research on intelligent automatic bus transfer equipment suitable for the small hydroelectric power system in mountainous area

In small hydroelectric power system,conventional automatic bus transfer equipment has the defects of needing more time to detect bus non-voltage,at the cost of islanding all the small hydroelectric power and taking a long time to restore power supply.Based on the theory of automatic synchronous capture and high-frequency generation shedding,an intelligent automatic switching scheme suitable for tie-line in small power source area is put forward.According to this method,automatic bus transfer mode of islandi...