摘要
分布式电源的间歇性和负荷的波动性会造成系统潮流波动,给配电网无功潮流优化控制带来困难.针对这一问题,提出了一种能够处理随机潮流的区间无功优化方法.首先结合配电网的特点,使用区间前推回代法计算随机潮流,然后建立了区间无功优化模型,使用PSO算法求解模型,最后引入区间数综合排序法比较适应度.算例结果表明,该方法可以在DG出力不确定及负荷波动的情况下,给出合理的优化方案,验证了模型的有效性和正确性.
Power flow fluctuation can be caused by the uncertain power output of distributed generations and the random fluctuation of load, which makes the reactive power flow optimization in distribution networks more complex. To solve this problem, an interval reactive power optimization method which can process probabilistic power flow is proposed. Based on the characteristics of distribution network, the interval forward and backward substitution method is used to calculate random power flow and the interval reactive power optimization model is established. The model is justified by using PSO algorithm, comprehensive priority of interval numbers is introduced when comparing fitness. The simulation results show that this optimization method can provide a reasonable control scheme and the model is correct and effective.
出处
《上海电力学院学报》
CAS
2015年第2期135-139,共5页
Journal of Shanghai University of Electric Power
关键词
配电网
分布式电源
无功优化
区间分析
随机潮流
distribution networks
distributed generation
reactive power optimization
interval analysis
probabilistic power flow
