摘要
电压稳定性是风电场的并网运行后所需考虑的一个重要问题。在传统优化潮流的基础上,将改进后的电压稳定性指标引入到优化算法之中,研究了多时段不同穿透功率下的动态优化潮流。根据风力异步电动机的特性方程,将其模型与原始?对偶内点算法算法相结合,推导得出了考虑电压稳定约束含风电场的电力系统动态最优潮流计算的内点算法。该算法可有效保持内点法的收敛快、鲁棒性等优点,实现对系统的优化。最后,考虑不同穿透功率,对算例系统进行了优化计算,分析了风电场对系统的经济性和电压稳定性方面的影响。通过算例分析,得出了一些相关的结论。
Voltage stability should be considered seriously when a power system is connected with wind farms. Based on the traditional optimal power flow algorithm, a multi-period dynamic optimal power flow （DOPF） is studied. According to the characteristic equation of the asynchronous generator, its model was combined with the primal-dual interior point method and a new algorithm that fits the DOPF in wind power integrated systems was deduced. Besides, L-index that can effectively reflect voltage stability was introduced into DOPF. In the end, with different penetration levels taken into account, the influences of wind farms on the economy and stability of the system are analyzed. An example shows the algorithm＇s effectiveness and the computation performance of the proposed method, and several conclusions are drawn as well.
出处
《华东电力》
北大核心
2008年第10期29-35,共7页
East China Electric Power
基金
国家高技术研究发展计划(863计划)(2007AA05Z458)
关键词
风电穿透功率
动态最优潮流
电压稳定
原始?对偶内点算法
wind penetration power
dynamic optimal power flow(DOPF)
voltage stability
primal-dual interior point method
