计及风险与源–网–荷双层协调的电力实时平衡调度

Electric Real-time Balance Dispatch via Bi-level Coordination of Source-grid-load of Power System With Risk

针对现代电网的发展需求,提出一种计及风险与源–网–荷双层协调的电力实时平衡调度方法。首先,抓住分布式新能源与主动负荷接入配电网的主要特征,提炼出利益协调与风险协调两个关键问题,建立计及风险与源–网–荷双层协调的电力实时平衡调度框架;其次,从电源、负荷与电网的特点及利益诉求出发,并充分考虑各种不确定性因素的影响,分别建立电网层、电源与负荷层的调度模型,并在电源与负荷层中以虚拟电厂的形式实现电源与主动负荷的特性互补;再次,针对所提模型中的机会约束问题,提出利用支持向量机的分类能力和拟合能力模拟机会约束条件与乐观值的方法,并基于人工蜂群算法进行求解。最后,通过算例证明了所提方法的有效性。

Responding to the speedy development of modern power grid, an electric real-time balance dispatch method via bi-level coordination of source-grid-load of power system with risk was proposed. First, considering the characteristics of modern power grid with more and more distributed new energy generation plants and load response, two key problems named interest coordination and risk coordination were extracted, and then the novel framework of electric real-time balance dispatch was established. Secondly, the models of economic dispatch in the grid layer and source-load layer were built according to their own interests and the various uncertain factors, respectively. The complementary of generation plants and active loads was also achieved when they were formed as the virtual plants. Thirdly, the support vector machine with the excellent classification and regression performance was used to approximate the probability of chance constraints and the target values. The artificial bee colony approach was further employed for its solution. The simulation results demonstrate the effectiveness of the proposed method.