摘要
随着风电装机容量的不断提高,风电输出功率的波动性给电网带来的不利影响越来越得到重视。文中介绍一种基于超级电容储能的风电场功率调节系统,利用超级电容器组作为储能元件,平抑风电场有功、无功功率波动,维持风电场输出端电压,降低风电场对电网电能质量的影响。基于功率调节系统的结构特点和工作原理,提出了一种网级控制、超级电容能量管理和变流器控制相结合的控制策略,并建立了变流器的动态小信号模型,进行了环路控制器设计。利用仿真软件PSCAD/EMTDC对系统的控制策略进行了仿真分析,仿真结果验证了该装置具有良好的运行性能。
The adverse impacts of wind power fluctuations on the power system become increasingly severe as wind turbine installation continues to grow. A super-capacitor energy storage （SCES） based wind power regulator is presented for smoothing power fluctuations and controlling wind farm terminal voltage. Based on the configuration and operation principle of the regulating system, a control strategy combining wind power control, super-capacitor voltage control and power conditioning system （PCS） control is proposed in detail. A dynamic small-signal model of PCS is presented for PCS controller design. The effectiveness of the device and control strategy is validated by simulation with PSCAD/EMTDC.
出处
《电力系统自动化》
EI
CSCD
北大核心
2009年第9期86-90,共5页
Automation of Electric Power Systems
基金
国家电网公司科技项目(SGKJ[2007]120)~~
关键词
风力发电
超级电容储能
电能质量
小信号模型
控制设计
wind power generation
super-capacitor energy storage
power quality
small-signal model
control design
