基于模糊STATCOM装置的牵引网低频振荡抑制策略  

Suppression Strategy for Low-Frequency Oscillation of Traction Network Based on Fuzzy STATCOM Device

作　　者：乔超杰 张晓虎[1] 董和夫 李江坪 屈浩轩 QIAO Chaojie;ZHANG Xiaohu;DONG Hefu;LI Jiangping;QU Haoxuan(Hunan University of Technology,Zhuzhou 412000,China)

机构地区：[1]湖南工业大学,湖南株洲412000

出　　处：《电工技术》2022年第4期95-99,103,共6页Electric Engineering

基　　金：湖南省教育厅重点项目(编号19A134)。

摘　　要：针对高速铁路牵引网低频振荡现象,提出在牵引网侧增设STATCOM装置对牵引网动态无功补偿的方案,引入模糊控制技术优化STATCOM性能,有效抑制了牵引网低频振荡现象。首先,分析了dq坐标系下的单相STATCOM数学模型,根据瞬时功率平衡原理推导出适用于牵引网的单相STATCOM直接电压控制策略。其次,在直接电压控制的基础上结合模糊控制技术,增强STATCOM的鲁棒性和自适应性。最后,在MATLAB仿真平台进行验证,结果表明基于模糊控制的STATCOM装置能实现对牵引网低频振荡的抑制,并有良好的稳态和动态特性。Aiming at the low-frequency oscillation phenomenon of high-speed railway traction network,a scheme of adding STATCOM device at the traction network side to compensate the dynamic reactive power of traction network is proposed.Fuzzy control technology is introduced to optimize the performance of STATCOM and effectively suppress the low-frequency oscillation phenomenon of traction network.Firstly,the mathematical model of single-phase STATCOM in dq coordinate system is analyzed,and the direct voltage control method of single-phase STATCOM suitable for traction network is deduced according to the principle of instantaneous power balance.Secondly,on the basis of direct voltage control,combined with fuzzy control technology,the robustness and adaptability of STATCOM is enhanced.Finally,it is verified on the MATLAB simulation platform.The results show that the STATCOM device based on fuzzy control can suppress the low-frequency oscillation of traction network,and has good steady-state and dynamic characteristics.

关 键 词：低频振荡 STATCOM 模糊控制 牵引网 

分 类 号：U225[交通运输工程—道路与铁道工程]