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Time Response of the Frequency of Hydroelectric Generator Unit with Surge Tank Under Isolated Operation Based on Turbine Regulating Modes

机译：基于汽轮机调节方式的带调压水轮发电机组隔振运行频率时间响应

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摘要

Aiming at studying the regulation quality of isolated turbine regulating systems under load disturbance and different regulation modes, the complete mathematical model of a turbine regulating system under three regulation modes is established. Then, based on dominant poles and null points, the method of order reduction for a high-order system of time response of the frequency is proposed. By this method, the complete high-order systems are solved and the regulation quality for time response of the frequency is studied. The results indicate that (1) the tail wave, which is the main body of time response of the frequency and the principal factor that determines the regulation quality, is mainly determined by the dominant poles; (2) for the three regulation modes, by deleting the high-order terms, the three equivalent overall transfer functions are fourth order, third order, and third order, respectively, and can be solved; (3) the analytical fluctuation equations of time response of the frequency solved from low-order equivalent overall transfer functions accurately simulate the fluctuation characteristics of time response; and (4) based on damped vibrations decomposed from analytical fluctuation equations, the regulation qualities of three regulation modes are analyzed.
机译：为了研究孤立的水轮机调节系统在负载扰动和不同调节模式下的调节质量，建立了三种调节模式下水轮机调节系统的完整数学模型。然后，基于优势极点和零点，提出了频率高阶时间响应系统的降阶方法。该方法解决了完整的高阶系统，研究了频率时间响应的调节质量。结果表明：（1）尾波是频率时间响应的主体，是决定调节质量的主要因素，主要由主导极决定； （2）对于三种调节方式，通过删除高阶项，三个等价的整体传递函数分别为四阶，三阶和三阶，并且可以求解。 （3）从低阶等效总传递函数解算出的频率的时间响应波动分析方程，可以准确地模拟时间响应的波动特征； （4）基于解析波动方程分解的阻尼振动，分析了三种调节方式的调节质量。

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