考虑价格需求响应的主动配电网动态经济调度

Active and Reactive Power Coordinated Economic Dispatch of Active Distribution Networks with Consideration of Price-based Demand Response

随着分布式发电的渗透率提高,配电网会出现馈线过载、电压越限等问题,从而限制了分布式电源的接入。需求响应利用负荷侧可调控资源参与主动配电网调度可以促进大规模分布式电源消纳。本文将价格型需求响应引入现有主动配电网的多时段优化运行调度模型,构建了三相主动配电网有功-无功协调动态经济调度模型,并提出了基于混合整数二阶锥规划的模型求解方法。该模型可通过需求响应负荷调节,并协调与分布式电源、储能装置、无功补偿装置的动态优化运行,达到节能降损、保证馈线负载、电压不越限的目的,实现主动配电网全局能量管理优化。对扩展的IEEE 33节点测试系统进行仿真分析,验证了所提出模型及算法的有效性和优越性。

With increasing penetration of distributed generation （ DG）, the overload of feeder lines and out of voltage limits will happen in distribution networks, which may limit the penetration of DG. Demand response can promote large-scale DG accommodation by utilizing demand side resources to participate in active distribution networks （ADN） scheduling. Therefore, a price-based demand response model is introduced to the existing multi-period optimization model for ADN, an active and reactive power coordinated economic dispatch model of three-phase ADN is developed and its solution method based on mixed integer second-order cone programming is proposed in this paper. The proposed model can reduce loss and ensure that the overload of feeder lines and out of voltage limits will not appear via optimizing the operation of DG, energy storage system and VAR compensation as well as demand response load. Simulation studies on the modified IEEE 33-bus system are presented to verify the effectiveness and advantage of the proposed model.