新型VSC-HVDC控制器设计  

Design of a New Type of VSC-HVDC Controller

作　　者：郑连清[1] 池俊锋[2] 

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400030 [2]杭州市电力局,浙江省杭州市310009

出　　处：《电网技术》2012年第3期210-216,共7页Power System Technology

基　　金：国家自然科学基金资助项目(50777066)~~

摘　　要：针对电压源型高压直流输电(voltage sourceconverter-high voltage derect current,VSC-HVDC)控制中各阶段的特点,将控制过程分为启动和非启动2个阶段,对非启动阶段中暂态阶段采用模糊控制,当系统进入稳态时,切换成常规比例–积分控制,以减小传统模糊控制而出现的抖振现象。同时配合使用反馈线性化理论对内电流环进行了建模,最终为VSC-HVDC设计了新型的控制器。实现了MATLAB与PSCAD仿真软件的互连,并进行了仿真,结果表明提出的控制策略具有良好的控制效果。In view of the features during different control stages of VSC-HVDC controller, the control process is divided into to stages, i.e., the startup stage and non-startup stage, and fuzzy control is applied to transient period in the non-startup stage. When the control system steps into steady state, the controller is transferred into conventional PI control mode to mitigate the chattering phenomenon caused by traditional fuzzy controller. Meanwhile, based on feedback linearization theory the inner current control loop is modeled, and finally a new type of VSC-HVDC controller is developed. The coordination of MATLAB software with PSCAD software is implemented and corresponding simulation of the developed VSC-HVDC controller is performed. Simulation results show that the proposed control strategy can off good control effect.

关 键 词：电压源型换流器 反馈线性化 无源网 模糊自适应控制 

分 类 号：TM571[电气工程—电器]