模糊PID参数自整定无功补偿方法的研究

Fuzzy self-tuning PID parameters reactive power compensation method

为提高无功功率的补偿效果,在常规的PID控制和模糊控制的基础上,本文提出了一种模糊PID参数自整定无功补偿方法。该方法采用两输入三输出的形式,以功率因数和功率因数变化率作为输入设计PID控制系统,采用模糊推理对PID控制器的控制参数进行在线整定,给出了参数自整定的规则。利用MATLAB软件对其进行计算、仿真,其结果符合预期目标。此方法既能提高无功补偿的效率,又能增强系统的跟随性。

In order to enhance the effect of reactive power compensation, on the basis of conventional PID control and fuzzy control, a fuzzy self-tuning PID parameters reactive power compensation method is proposed. Taking power factor and power factor rate as inputs, the PID control system of a two-input and three-output format is designed, which uses fuzzy inference to tuning control parameters of PID controller online, and gives the parameter self-tuning rules. In addition MATLAB is used for simulation in this paper which verifies the result is in conformity with the principle and the requirements. This method can improve the efficiency of reactive power compensation, but also enhance the system＇s following performance.