摘要
针对配备集中补偿装置SVC的双馈风电机组(DFIG)组成的风电场,提出了一种基于网络损耗最小的无功补偿方案,综合利用风电场安装的SVC无功补偿装置及双馈风电机组的无功调节能力来实现无功优化。风电场自动电压控制系统通过风电场并网点的电压偏差推算出风电场的无功功率需求,根据此时双馈风电机组和SVC无功补偿装置实际无功发生能力,以网络损耗最小为目标函数进行无功分配,通过此分配方法既可以发挥双馈风电机组无功调节能力又可以减小风电场的损耗。仿真结果表明采用所提策略能够有效地减少风电场功率损耗,提高电压稳定裕度。
For wind farms consisting of double-fed wind turbines with centralized compensation device SVC,amethod was proposed based on a minimum of reactive power compensation,utilized of installed reactive powercompensation device SVC and double-fed unit′s reactive ability to achieve reactive power optimization. Wind farmautomatic voltage control system calculated the reactive power demand for wind farms through a voltage deviation ofpoint of connection of wind farm. According to actual reactive power generation capability of double-fed wind turbinesand reactive power compensation device SVC,distributed reactive power with a network loss minimum of theobjective function,this allocation method could play DFIG reactive power regulation capability and could reduce theloss of wind farms. The simulation results show the proposed scheme can effectively reduce the wind farm powerlosses and improve voltage stability margin.
出处
《电气传动》
北大核心
2016年第6期37-40,共4页
Electric Drive
关键词
双馈风电机组
静态无功补偿装置
电压控制
无功优化
double-fed wind turbines
static var compensation device
voltage control
reactive power optimization
