含同步风电机组的电力系统动态最优潮流  

Dynamic optimal power flow considering synchronous wind generator system

作　　者：李滨[1] 杜培[1] 韦化[1] 

机构地区：[1]广西电力系统最优化与节能技术重点实验室(广西大学),广西南宁530004

出　　处：《电力系统保护与控制》2013年第23期8-15,共8页Power System Protection and Control

基　　金：国家自然科学基金项目(51107011;51167001);广西自然科学基金项目(2011GXNSFA018018);广西大学科研基金资助项目(XBZ120037)~~

摘　　要：同步风力发电机因电压和无功可控、并网效率高的特点,成为目前发展趋势。考虑同步风力发电机的无功控制方式与机组爬坡约束,对风电场无功运行边界和并网点电压条件进行探讨,推导出同步风电机组的无功极限计算方法,建立了含同步风电机组的电力系统动态最优潮流模型。由于发电机的有功、无功只与风速和节点电压有关,因此计算过程中无需额外修正节点电压值。在同步风力发电机基础上,考虑风速和负荷变化,选取某地区24小时风速和负荷变化典型曲线,分别在恒电压和恒功率因数两种控制方式下采用现代内点理论对IEEE-14和IEEE-118标准算例进行仿真,其结果为分析风电场接入电力系统的影响,制定风电有效容量,提高系统接纳风电能力提供决策依据。Due to the voltage and reactive power controllability and high efficiency of grid connection, the synchronous wind generator became the current development trends. The model of dynamic optimal power flow with synchronous wind generator considering the synchronous wind generator reactive power control style and ramp rate is presented. The border of reactive power of wind farm is calculated and the node voltage of the point of interconnection of wind farm is discussed. The reactive and active power is just related to the wind speed and node voltage, which causes calculation without repeated correction. Based on the synchronous wind generator model, considering the randomness change of wind speed and load, an actual 24-hour＇s wind speed and load curve is selected for data simulation and studied on the IEEE-14 and IEEE-118 bus system under the constant voltage or power factor control mode. The modem interior point theory is used to find out the optimal solution, which contributes to the dispatching and operating for wind power, finally providing the optimal power distribution of the wind farm.

关 键 词：电力系统 同步风电机组 动态最优潮流 现代内点理论 无功极限 

分 类 号：TM744[电气工程—电力系统及自动化] TM315