综合利用SVC和风力发电机的风电场无功控制策略  

A strategy of reactive power control for wind farm operation using SVC and DFIG

作　　者：赵利刚[1] 房大中[1] 孔祥玉[1] 侯佑华[2] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072 [2]内蒙古电力调度通信中心,内蒙古呼和浩特010020

出　　处：《电力系统保护与控制》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)~~

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.

关 键 词：风电场 无功功率 双馈风机 SVC 

分 类 号：TM614[电气工程—电力系统及自动化]