基于模糊PID的静止无功补偿器电压控制方法

Voltage Control Method of Stationary Reactive Power Compensator Based on Fuzzy PID

应用传统方法控制静止无功补偿器电压后,不仅电压回归稳态的耗时较长,且功率损耗较高。为此,本文提出基于模糊PID的静止无功补偿器电压控制方法,根据静止无功补偿器电路特点,建立数学模型,通过对补偿器电流作傅里叶变换,确定补偿器电压状态,然后,建立模糊PID控制规则,将补偿器电压修正值输入补偿器数学模型中对电压进行修正控制。应用该方法后,静止无功补偿器电压回归稳态时间在1 s以内,单位节点功率损耗在25 MW以内,电压得到有效控制。

After applying traditional methods to control the voltage of the static var compensator,not only does it take longer for the voltage to return to steady state,but also the power loss is high.Therefore,a voltage control method for static var compensator based on fuzzy PID is proposed in this paper.Based on the characteristics of the static var compensator circuit,a mathematical model is established to determine the voltage state of the compensator by performing Fourier transform on the current of the compensator.Then,establish a fuzzy PID control rule and input the voltage correction value of the compensator into the mathematical model of the compensator to correct and control the voltage.After applying this method,the static reactive power compensator voltage regression steady-state time is within 1 s,and the unit node power loss is within 25 MW,effectively controlling the voltage.