小水电进相运行对电网的影响

Influence of Small Hydropower on Power Grid

小水电集中上网地区电压问题严重,水电机组进相运行可以为电网提供一定的无功支撑。研究了小水电进相运行对电网的降压效果,分析了进相运行对电网网损的影响,提出通过适当安排小水电进相运行,参与地区电网无功电压调节等方法,来提高小水电集中并网地区电压管理水平,改善电能质量。

The voltage problems of concentrated grid connected areas of small hydropower are serious.The leading phase operation of hydroelectric generating set could provide certain reactive power support for the power grid.This paper researched on the reduction voltage effect of the power grid from the small hydropower leading phase operation,analyzed the impacts of leading phase operation on the grid loss and proposed to properly arrange the small hydropower leading phase operation with participation in the reactive voltage regulation of regional power grid,to improve the voltage management level of concentrated grid connected areas of small hydropower,together with the power quality.