阻抗孔特性对水电站水力干扰过渡过程的影响研究  

Research on Influence of Impedance Hole Characteristics on Hydraulic Disturbance Transition Process of Hydropower Stations

作　　者：张超[1] 张帅[2] 张晓宏[2] ZHANG Chao;ZHANG Shuai;ZHANG Xiaohong(Power China Northwest Engineering Corporation Limited,Xi’an 710065,Shaanxi,China;Xi’an University of Technology,Xi’an 710048,Shaanxi,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西西安710065 [2]西安理工大学,陕西西安710048

出　　处：《电网与清洁能源》2020年第12期97-100,106,共5页Power System and Clean Energy

基　　金：国家自然科学基金项目(51279162)。

摘　　要：采用水电站过渡过程通用程序,分析研究了某大型水电站阻抗孔特性对水力干扰过渡过程的影响,结果表明:无论是并入理想大电网还是并入有限电网,当阻抗孔尺寸或流量系数发生改变时,对受扰机组的出力摆动结果都有明显影响。同一工况下,阻抗孔直径或流量系数越大,受扰机组出力摆动越大;并入理想大电网的出力摆动均大于对应情况下并入有限电网的出力摆动;适当减小阻抗孔面积,有利于保证过渡过程中机组工作的稳定性,并可节省工程费用。The general procedure for the transition process of a hydropower station is used to analyze the influence of the impedance hole characteristics of a large hydropower station on the hydraulic disturbance transition process.The results show that when the impedance hole size or flow coefficient are changed,the output swing of the disturbed turbine unit will be obviously affected whether the unit is integrated into an ideal large power grid or a limited power grid.Under the same working condition,the larger the diameter of the impedance hole or the flow coefficient is,the greater the output swing of the disturbed unit is;the output swing of the unit integrated into the ideal large power grid is always larger than the corresponding value with the limited power grid.Therefore,appropriately reducing the impedance hole area is conducive to ensuring the stability of the unit in the transition process,and can save the project cost.

关 键 词：主调压室 阻抗孔 水力干扰 出力摆动 涌浪水位 

分 类 号：TP97[自动化与计算机技术]