摘要
针对风电场的无功功率平衡和电压稳定问题,提出了一种以风电场与电网交换无功功率值为目标的控制策略。综合运用风电场安装的SVC无功补偿装置及双馈机组的无功调节能力来达到这一目标值。提出了依据不同位置的风机发出无功功率对出口母线送出无功的灵敏度来确定风机调整顺序的方法,使风机发出尽量少的无功功率来满足出口处送出无功的要求。用内蒙某实际风电场运行数据验证了控制策略的有效性。
A reactive power control strategy is proposed for reactive power balance and voltage stability of wind farms. The control objective is to maintain reactive power exchange between wind farm and the grid at a specific value. To achieve the control target, both SVC installed in wind farm and the reactive power adjustment ability of Doubly Fed Induction Generator （DFIG） are used. In addition, a method is proposed to determine the adjusting order of DFIGs according to the sensitivity of the reactive power output of wind turbines in different locations to the output reactive power of export bus, in which the total output reactive power of DFIGs could be less. Finally, the effectiveness of the control strategy is verified by using the operation data of a wind farm in Inner Mongolia.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第2期45-50,55,共7页
Power System Protection and Control
基金
国家自然科学基金资助项目(50777046)
国家重点基础研究发展计划(973)资助(2009CB219700)~~
