基于集中式信息系统的主动配电网鲁棒优化调度

Robust optimal dispatch of active distribution networks based on centralized information system

为了适应配电网从被动受电向主动供电角色的转化,提出基于集中式信息系统的主动配电网鲁棒优化调度策略。采用交流潮流模型描述配电网的功率平衡关系,计及无功注入的调节作用,建立两阶段电能与备用联合调度模型;应用鲁棒优化技术,构建可再生能源发电出力的不确定性集合;将高维、非凸的最优化问题转化为凸问题,以保证最优解的性能。对算例系统进行仿真计算,结果表明资源的优化调度提高主动配电网的灵活性,所提出的鲁棒优化调度策略能够增强主动配电网对间歇性可再生能源发电的容纳能力。

To be adpaptable to the evolving role of distribution power networks from the passive power consumption to active power supply,a robust optimal scheduling strategy was proposed for active distribution networks based on centralized information system. The AC power flow model was used to describe the power balance of a distribution network accounting for the impact of adjustment of the reactive power injection. A two-stage joint energy and reserve scheduling model was built. The uncertainty set of the renewable power outputs was constructed by using the roboust optimization technique. The optimization problem of high dimension and nonconvexity was transformed into convex problem to ensure the optimal solution performance. Simulation results of a test system showed that a substantial increase of flexibility was achieved through the optimal dispatch of various resources. The proposed robust optimal schedule strategy could enhance the capability of active distribution networks to integrate intermittent renewable generation.