SVG协同双馈风电场的暂态控制策略研究  

Study on SVG and Double-fed Wind Farm Transient Cooperative Control Strategy

作　　者：蒋嫔 舒子江 张兴平 罗童 张晓英[4] 王晓兰[4] JIANG Pin;SHU Zijiang;ZHANG Xingping;LUO Tong;ZHANG Xiaoying;WANG Xiaolan(Ultra High Voltage Company of State Grid Gansu Electric Power Company,Lanzhou 730000,China;Zhuhai Power Supply Bureau,Guangdong Power Grid Corporation,Zhuhai 519000,China;State Grid Dingxi Power Supply Company,Dingxi 743000,China;College of Electricity and Information Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]国网甘肃省电力公司超高压公司,甘肃兰州730000 [2]广东电网有限责任公司珠海供电局,广东珠海519000 [3]国网定西供电公司,甘肃定西743000 [4]兰州理工大学电气工程与信息工程学院,甘肃兰州730050

出　　处：《控制工程》2024年第11期2112-2122,共11页Control Engineering of China

基　　金：国家自然科学基金资助项目(61963024)。

摘　　要：为了充分考虑装设静止无功发生器(static var generator,SVG)的双馈风电场故障状况下的非线性特性,使用一种参数自适应超扭曲滑模控制器(super-twisting adaptive sliding mode control,STASMC)对多输入多输出(multiple input multiple output,MIMO)系统的零动态(zero dynamics,ZD)方法进行改进,提出一种ZD-STASMC方法来协调控制双馈机组和SVG。使用ZD方法将原始系统部分线性化,简化了控制设计任务。为了进一步提高在参数不确定性和外部扰动下的电压调节能力,将ZD方法与STASMC相结合。通过STASMC构造辅助输入提升了ZD方法的鲁棒性,减少了建模误差和实际过程中各种误差的影响。改进后的ZD方法减小了线性化误差的影响,加强了双馈感应发电机(doubly-fed induction generator,DFIG)的暂态性能。最后,通过算例系统在三相故障下的仿真验证了所提ZD-STASMC控制的有效性。In order to fully consider the nonlinear characteristics of a doubly-fed wind farm equipped with Static Var Generator(SVG) under fault conditions,a twisting adaptive sliding mode control(STASMC) is used to introduce zero dynamics for the multi-input-multi-output(MIMO) system.A ZD-STASMC method is proposed to coordinate control of doubly-fed units and SVG.The control design task is reduced,when the original system is partially linearized by using ZD method.In order to further improve the voltage regulation ability under the parameter uncertainty and external disturbance,ZD method is combined with STASMC.STASMC is used to construct auxiliary inputs to improve the robustness of ZD method and reduce the influence of modeling errors and various errors in the actual process.The improved zero-dynamic method reduces the influence of linearization error and enhances the transient performance of DFIG.Finally,the effectiveness of the proposed ZD-STASMC control is verified by the simulation of the system under a three-phase fault.

关 键 词：双馈风电场 SVG ZD方法 超扭曲滑模控制 协调控制 故障穿越 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置] TM614[自动化与计算机技术—控制科学与工程]