模糊自适应控制器在高压直流输电逆变侧的应用  

Fuzzy Self-adaptive Controller Applied to the Inverter in HVDC System

作　　者：张立伟 安向勇 李峰 樊习英 Zhang Liwei;An Xiangyong;Li Feng;Fan Xiying(Economic and Technical Research Institute of Shanxi Electric Power Company,Taiyuan Shanxi 030006)

机构地区：[1]国网山西省电力公司经济技术研究院,山西太原030006

出　　处：《现代工业经济和信息化》2018年第1期52-54,共3页Modern Industrial Economy and Informationization

摘　　要：针对常规PI控制器对非线性、时变、动态的HVDC系统不能达到较好的控制效果的问题,提出了一种模糊和PI复合控制策略即模糊自整定PI控制器,并对模糊和PI控制结合形式进行了详细的讨论。结合典型12脉冲桥HVDC系统逆变侧模型,采用MATLAB在传统控制和模糊自整定PI控制下分别进行仿真,结果表明,与传统控制方法相比,当单相交流线路发生接地故障时,由于模糊自整定控制器能在线调整PI参数,因而模糊自整定PI控制器能改善系统直流电流和直流电压的恒定性,并且具有更好的适应性和更强的鲁棒性。The traditional PI controller can't acquire satisfying result for HVDC system which are of characteristics of nonlinearity,dynamic and time-variation.In order to overcome the shortcoming of conventional controller,fuzzy-PI composite control method is proposed.The combining modes of fuzzy and PI controller are discussed in detail.Based on the model of inverter in a HVDC 12-pulse transmission system,the simulation is carried out by traditional control method and fuzzy self-adaptive PI control method respectively by MATLAB.The simulation results show that compared with traditional control method when it happens grounding fault on single-phase AC bus,the fuzzy self-adaptive PI controller can improve the steadiness of DC current and voltage and has better adaptability and robustness.

关 键 词：高压直流输电 逆变侧 模糊控制 自适应 PI控制器 

分 类 号：F722[经济管理—产业经济]