基于遗传算法的电容器组投切自动控制方法研究  

Research on Automatic Control Method of Capacitor Bank Casting and Cutting Based on Genetic Algorithm

作　　者：祝文军 张国平 ZHU Wenjun;ZHANG Guoping(Qinghai Shanmei New Energy Technology Co.,Ltd.,Xining 810000,China)

机构地区：[1]青海陕煤新能源科技有限公司,青海西宁810000

出　　处：《自动化仪表》2025年第4期48-53,共6页Process Automation Instrumentation

基　　金：国家能源集团科技创新基金资助项目(GKMC-22-253)。

摘　　要：针对电容器组投切调节过于频繁导致的涌流或过电压问题,研究了基于遗传算法的电容器组投切自动控制方法。利用基尔霍夫电压理论,建立电容器等效回路数学模型。根据负载变化表征电气参数,进而调节电容器组的投切时机和调节次数。根据电容器电流、电压、相角等信息明确电容器组投切时重燃、击穿问题的触发条件。以电容器组有功耗损最小为目标函数,制定电容器投切调节次数、节点电压、电容量约束。通过遗传算法的选择、交叉及变异,求解调节次数控制矢量,并逐次调节投切状态。试验结果表明,所提方法应用后,电容器时刻处于最佳状态作业,且有功损耗少,避免了故障产生。该方法应用效果好,保障了电容器的稳定运行。Aiming at the problem of inrush current or overvoltage caused by too frequent regulation of capacitor bank casting and cutting,the automatic control method of capacitor bank casting and cutting based on genetic algorithm is researched.Using Kirchhoff voltage theory,a mathematical model of capacitor equivalent circuit is established.The electrical parameters are characterized according to the load changes,and then the timing and number of adjustments of capacitor bank casting and cutting are adjusted.According to the information of capacitor current,voltage,phase angle,etc.,the triggering conditions of re-ignition and breakdown problems during the casting and cutting of the capacitor bank are clarified.With the minimization of active loss of capacitor bank as the objective function,the constraints on the number of capacitors casting and cutting adjustments,node voltage,and capacitance are formulated.Through the selection,crossover and mutation of genetic algorithm,the control vector of regulation times is solved,and the casting and cutting state is adjusted one by one.The test results show that after the proposed method is applied,the capacitor is always in the optimal state operation,and the active loss is less,avoiding the fault generation.The method is applied effective and guarantees the stable operation of the capacitor.

关 键 词：遗传算法 电容器 投切技术 涌流 振荡角 相角触头 

分 类 号：TH-39[机械工程]