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一、电力系统控制历程简述本世纪中叶,经典控制理论已发展到完善阶段。五十年代末,苏联、美国的电厂中采用了各种类型的调节器,其基本原理都是以单输入控制单输出。这种理论的基本方法是通过建立控制对象与被控对象之间关系的微分方程,使用拉氏变换方法,求出系统的传递函数,然后通过拉氏逆变换即可以求出输出响应,实际上即是把时域函数变成复域函数讨论、处理,然后再反变回时域,从而得到所需要的控制响应。另外,在电力系统控制中还常常采用 PSS控制器(即电力系统镇定器)。现在国内水电厂有采用这种控制结构的(见图1)。这种结
First, a brief history of power system control The middle of this century, the classical control theory has been developed to improve the stage. In the late 1950s, various types of regulators were used in power plants in the Soviet Union and the United States. The basic principle is to control a single output with a single input. The basic method of this theory is through the establishment of differential equations between the control object and the controlled object, the use of Laplace transform method, find the transfer function of the system, and then through the inverse of the Lagrange can be obtained output response, in fact That is, the time domain function into a complex function to discuss, deal with, and then back to the time domain, so as to get the required control response. In addition, PSS controllers (ie power system ballasts) are also often used in power system control. Domestic hydropower plants now use this control structure (see Figure 1). This knot