基于改进TS模糊的直流电弧炉闪变抑制优化  

Flicker suppression optimization of DC arc furnace based on improved TS fuzzy algorithm

作　　者：朱明星[1,2] 许路遥 高敏 ZHU Mingxing;XU Luyao;GAO Min(School of Electrical Engineering and Automation,Anhui University,Hefei 230039,China;Anhui University Green Industry Innovation Research Institute,Hefei 230601,China)

机构地区：[1]安徽大学电气工程与自动化学院,安徽合肥230039 [2]安徽大学绿色产业创新研究院,安徽合肥230601

出　　处：《电力工程技术》2024年第4期136-146,共11页Electric Power Engineering Technology

摘　　要：为提高静止无功补偿器(static var compensator,SVC)应对直流电弧炉等冲击性负载的闪变抑制性能,文中在改进Takagi-Sugeno(TS)模糊算法的基础上,提出一种SVC滚动预测控制方法。首先,建立直流电弧炉电气模型并仿真分析其无功特性;然后,针对经典TS模糊预测算法应用于波动负荷时出现的输出异常置0情况,提出一种范围自适应修正的改进方法,该方法能消除一类算法应用机理导致的异常值,从而提高TS模糊算法对波动负荷无功功率预测的可靠性和准确性;最后,基于模型训练时间约束,建立无功功率半周期滚动预测控制模型,提前10 ms预测无功功率,改善了SVC传统控制系统响应的滞后特性。仿真结果表明,相比于SVC传统控制方法,所提方法的平均闪变改善率提高了54.17%,验证了所提方法对闪变现象的抑制效果提升显著。In order to improve the flicker suppression performance of static var compensator(SVC)in response to impact loads such as DC electric arc furnace,a SVC rolling predictive control method based on the improved Takagi-Sugeno(TS)fuzzy algorithm is proposed.Firstly,the electrical model of DC electric arc furnace is established and its reactive power characteristics are simulated and analyzed.Then,an improved method of range adaptive correction is proposed to address the issue of abnormal output set to 0 when the classical TS fuzzy prediction algorithm is applied to fluctuating loads.This method can eliminate the outliers caused by the application mechanism of a class of algorithms,so as to improve the reliability and accuracy of TS fuzzy algorithm for reactive power prediction of fluctuating loads.Finally,based on the model training time constraint,a reactive power half-cycle rolling predictive control model is established to predict the reactive power 10 ms in advance.It is competent to improve the lag characteristics of the traditional SVC control system response.The simulation results show that the average flicker improvement rate of the proposed method increases by 54.17%compared with the traditional SVC control method,and the suppression effect of flicker phenomenon is significantly improved.

关 键 词：Takagi-Sugeno(TS)模糊算法 直流电弧炉 静止无功补偿器(SVC) 预测控制 异常值修正 闪变抑制 

分 类 号：TM711[电气工程—电力系统及自动化]