【摘要】 介绍了大中型水利发电机组自并励励磁系统的特点,从理论上分析大中型机组采用自并励励磁模型对电网的影响。以安康水电厂为例,建立了安康水电厂自并励励磁系统模型,详细仿真计算安康水电厂内1台、2台、3台及4台机组励磁系统模型从它励改为自并励后对陕西电网稳定性影响,分析其对电网安全稳定水平以及对安康水电送出能力的影响,进一步确定了自并励励磁系统模型应用于大中型水利发电机组后会改变所在区域电网的稳定水平。更多还原

【Abstract】 The paper introduces the characteristic of Large and medium-sized hydropower unit using bus fed static excitation system,and analyzes the impact of the bus fed static excitation system model on power grid with large and medium-sized hydropower unit in theory.Taking Ankang hydropower plant as an example,the paper establishes the bus fed static excitation system model for hydropower unit,and analyzes the impact on the stability of Shanxi power grid and the transmission capacity of Ankang hydropower plant through detailed simulation using the bus fed static excitation system model instead of individual excitation system for 1,2,3,4generators respectively.Moreover,the stability level of area power grid with the large and medium-sized hydropower unit can be changed using the bus fed static excitation system.更多还原