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通过泗阳二站水泵的反向发电能量性能模型试验，详细分析了水泵在不同水头和不同转速下的发电性能。研究发现：泗阳二站水泵在发电水头高于4．8m时，电机不变极运行比电机变极运行时输出的电功率反而要高。
Through the energy performance model test of the reverse power generation of Siyang No.2 pump, the power generation performance of the pump under different head and different rotation speed is analyzed in detail. Study found that: Siyang two pumps in the power generation head is higher than 4.8m, the motor does not change the pole run than the motor output pole when the output power instead of higher.