考虑风光无功调节的配电网分布式电源双层规划

A bi-level planning model for DG in distribution network considering wind and photovoltaic reactive power regulation

分布式电源(distributed generation, DG)作为配电网运行优化中关键一环,其合理的调控策略可以有效提高新能源渗透,减少电压波动,并降低网络损耗,因此在规摘要划阶段,应充分考虑DG无功出力,最大限度发挥DG互补能力。本文建立了以经济性和稳定性为目标的含DG控制模型的双层配电网规划模型,在上层中以最小年综合费用为目标对DG位置容量进行决策,下层计算电压偏差最小化时的DG控制策略,使用粒子群算法对该模型进行分层求解,求得年费用和电压波动最优的DG安装位置和容量,并在IEEE 33节点算例中验证了该模型能够有效提高源网协同控制能力,发挥DG调节作用。

As a critical part in optimizing the operation of power distribution network, distributed generation(DG) is featured with reasonable regulation strategies, which can effectively improve penetration of new energy,reduce voltage fluctuation and network losses. Therefore, at the planning stage, the control model of DG should be fully considered to maximize its complementary capabilities. This paper builds a double-layer power distribution network model including DG control model applied for the sake of economy and stability. On the upper layer, DG location capacity is calculated to minimize annual comprehensive cost. On the lower layer, DG control strategy is studied to minimize voltage deviation. The model is divided into layers and calculated by using particle swarm optimization. The annual cost and voltage fluctuation with the optimal DG installation location and capacity are worked out. In the case of IEEE 33, it has been proven that the model can effectively improve the cooperative control over the source network and generate the role DG plays in making adjustment.