考虑调压裕度的风电场无功电压控制策略  

Reactive power control strategy for wind farm considering voltage adjustment margin

作　　者：柴赟 李艺丰 仇晨光 朱涛 段接迎 沈希澄 Chai Yun;Li Yifeng;Chou Chenguang;Zhu Tao;Duan Jieying;Shen Xicheng(State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210000,China;Grid NARI Technology Co.,Ltd.,Nanjing 211106,China;Institude of Advanced Technology,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]国网江苏省电力有限公司,江苏南京210000 [2]国电南瑞科技股份有限公司,江苏南京211106 [3]南京邮电大学先进技术研究院,江苏南京210023

出　　处：《可再生能源》2022年第12期1682-1687,共6页Renewable Energy Resources

基　　金：国家自然科学基金重点项目(61933005)。

摘　　要：针对风电场并网带来的电压稳定问题,文章提出了考虑调压裕度的无功电压控制策略。采用分层控制技术,首先通过无功整定层计算风电场无功输出参考值;其次在无功分配层考虑无功补偿装置与风电机组自身的调压裕度,选择相应的无功补偿方法,优先选用风电场配置的无功补偿装置进行无功调节。若补偿装置无法满足电压稳定要求,则根据各风电机组的运行状态,将无功补偿值按照无功容量比例算法进行分配,风电机组的网侧变流器采用自适应下垂控制以实现最大无功容量补偿。若无功缺额依然存在,需要对风电机组进行减载控制以实现对电网电压的无功支撑;最后,通过PSCAD/EMTDC仿真平台对所提策略的有效性进行了验证。To solve the voltage stability problem of wind farms integration,this paper proposes a reactive power control strategy considering voltage adjustment margin.The strategy adopts hierarchical control technology.The wind farm var calculator module calculates the demand of reactive power output and the wind turbine generator var distribution module considers the voltage adjustment margin of the wind turbines and reactive power compensation device and choose var control methods of different levels.The static var compensator of wind farms is the first choice,if the static var compensator unable to meet the voltage stability requirements,selecting wind turbines according to the operating statues,and allocating the reactive power demand to selected wind turbines.The grid-side converter use adaptive droop control to realize reactive power compensation.If the reactive power shortage still exist,the wind farm should adopt load shedding control to provide reactive power support to the point of common coupling.The PSCAD/EMTDC simulation results show that the proposed strategy is effective.

关 键 词：风电场 无功功率控制 电压稳定 分层控制 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程] TM614[电气工程—电力系统及自动化]