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以BPA4.0为例,分析了现有电力系统稳定分析程序的不足:机械液压式调速器模型脱离实际,简单的理想水轮机模型无法反映设备的真实状态。从实际生产需要出发,开发符合实际的调速器模型,与用非线性高阶传递函数表示的原动机模型构成自定义的水轮机调节系统模型。通过与实测动态过程的比较发现,该模型的仿真结果较BPA4.0中的模型更接近实际,吻合度高、平均几何相对误差小,可以满足电力系统稳定分析的需求。
Taking BPA4.0 as an example, the insufficiency of the existing power system stability analysis program is analyzed: the mechanical hydraulic governor model is out of practice, and the simple ideal hydraulic turbine model can not reflect the true state of the equipment. Based on actual production needs, a real governor model is developed, and a self-defined turbine governing system model is constructed with a prime mover model represented by a nonlinear high-order transfer function. Compared with the measured dynamic process, it is found that the simulation results of this model are more realistic than those of BPA4.0. The results show that the model has good agreement and low average geometric error, which can meet the needs of power system stability analysis.