基于机组运行特性曲线的变速抽水蓄能机组自适应协调控制方法

Adaptive Coordinated Control Method of Variable Speed Pumped-storage Unit Based on Unit Operating Characteristic Curves

针对变速抽水蓄能机组调速器与交流励磁控制系统之间的协调控制问题,基于机组转速、导叶开度与系统功率和静水头之间的关系,提出了一种基于机组运行特性曲线的变速抽水蓄能机组自适应协调控制方法。首先,建立协调控制系统模型,根据变速抽水蓄能机组运行特性曲线,采用径向基函数插值法拟合推导出协调控制数学模型,从而实现了自适应协调控制;进而,通过仿真验证了自适应协调控制方法。仿真结果表明,该方法具有较高的精度和可行性。

Aim at the coordinated control between governor and AC excitation control system of variable speed pumped-storage unit, an adaptive coordinated control method of variable speed pumped-storage unit based on unit operating characteristic curve is proposed, in which, the relationship between unit speed and power system and hydrostatic head, and the relationship between guide vane opening and power system and hydrostatic head are used. Firstly, a model of coordinated control system is established, and according to the operating characteristic curve of variable speed pumped-storage unit, the mathematical control model for coordinated control of variable speed unit is derived by the method of radial basis function interpolation. Thus, the coordinated control between governor and AC excitation control system of variable speed pumped-storage unit is realized. Then, the adaptive coordinated control method of variable speed pumped-storage unit is verified by simulation. The simulation results show that the proposed method has higher accuracy and feasibility.