考虑高压配电网转供能力的储能电站双层规划模型

城市化进程的加快使得当前城市电网面临日益严重的运行阻塞问题,传统利用负荷转供进行阻塞管控的调节方式灵活性较差,单一管控方式不具适应性。文章利用储能可平移负荷时空分布的特点,并考虑运行策略对规划方案的影响,提出计及高压配电网(high voltage distribution network, HVDN)转供能力的储能电站双层规划模型。上层构建储能投资收益的规划模型,下层构建多场景下以拓扑重构为主、储能充放为辅的运行优化模型,由于运行控制和规划配置间相互影响,将不同时间尺度的内外层优化置于同一框架内,以系统节点切负荷量、储能电站配置位置、容量及功率为耦合变量交替迭代,采用粒子群算法及CPLEX求解器进行迭代求解。最后以某城市电网局部系统为例,验证所提模型的有效性和求解方法的可行性。

Bi-level Programming Model of Energy Storage Power Station Considering Transfer Capability of High Voltage Distribution Network

With the acceleration of urbanization, the current urban power grid is faced with increasingly serious problem of operation block. The traditional control mode using load transfer for blocking control is less flexible, and the single control mode is not adaptive. According to characteristics of space-time distribution of transferrable load by energy storage, and considering the influence of operation strategy on the planning scheme, a two-layer planning model of energy-storage power station is proposed, which takes into account the transmission capacity of high-voltage distribution network (HVDN). The upper layer builds energy-storage planning model of investment income, and the lower layer builds more scenarios by giving priority to topology reconstruction, while energy-storage operation optimization model as complementary. Due to the mutual influence between operation control and planning configuration, the inner and outer layers of different time scales are optimized in the same frame. The cutting loads of the system nodes, the location, capacity and power of the energy-storage power station are used as the coupling variables to alternate iteration. The particle swarm optimization algorithm and CPLEX solver are used to alternate for solution. Finally, an example is given to demonstrate the effectiveness of the proposed model and the feasibility of the solution method.