基于超级电容器储能的STATCOM对直驱风力机并网性能改善的研究  

Performance Improvement of a Grid-connected Direct Drive Wind Turbine Based on STATCOM with Super-capacitor Energy Storage

作　　者：刘江涛 王海云[2] 罗庆[3] 罗建春 马君豪 

机构地区：[1]国网重庆武隆县供电有限责任公司,重庆武隆408500 [2]新疆大学电气工程学院,新疆乌鲁木齐830008 [3]国网新疆电力公司电力科学研究院,新疆乌鲁木齐830000 [4]昌吉回族自治州锅炉水处理技术服务部,新疆昌吉831100

出　　处：《现代电力》2015年第3期6-12,共7页Modern Electric Power

基　　金：教育部创新团队项目(IRT1285);国家自然科学基金项目(51267017);自治区重大攻关项目(201230115)

摘　　要：本文主要研究了采用基于超级电容器的静态同步补偿器(STATCOM)的永磁(PMSG)直驱变速风力机控制策略。基于Matlab/Simpower实现对风力发电机侧整流器最大功率提取、电网侧逆变器和STATCOM的控制策略,采用不同容量超级电容器储能的STATCOM系统在电网出现故障或者受到干扰时提升风力发电系统稳定状态和动态性能。大量仿真结果表明:与传统的STATCOM相比,采用基于超级电容器的STATCOM能有效改善并网过程中出现的电压闪变及波动,减小频率的波动,并能对故障期间的电流进行有效控制,从而较为显著地改善了直驱风力发电系统的有功、无功功率,提升了风电并网系统故障穿越能力和动态性能。In this paper,the control and operation strategy of grid-connected direct drive variable speed wind turbine based on permanent magnet synchronous generator（PMSG）is studied by applying a static synchronous compensator（STATCOM）with super-capacitor.The control strategies for generator-side converter with maximum power extraction,grid-side inverter and STATCOM controller are implemented in Matlab/Simpower,and such extensive simulations as STATCOM ＋/system by using different super-capacitor energy storage to enhance the steady state and dynamic performances of the wind energy system under grid faults or disturbances are conducted.By comparing with traditional STATCOM,simulation results show that the application of STATCOM with super-capacitor can effectively improve voltage flicker and volatility and reduce frequency fluctuation during grid connecting,then effectively control the current during fault occurs,which obviously improve active and reactive power of direct drive wind generation system,the fault ride through capability and dynamic performance of grid-connected wind power system.

关 键 词：直驱变速风力机 PMSG STATCOM 超级电容储能 

分 类 号：TM72[电气工程—电力系统及自动化]