考虑用户停电损失的微网网架规划

Optimal Architecture Planning of Microgrid Considering User Outage Costs

基于对微网网架规划特点和用户停电损失的研究,建立了考虑用户停电损失的微网网架规划模型,并将分布式电源(DG)和负荷的时序特性纳入目标函数中,以最小化网络年费用为优化目标,综合考虑潮流约束、运行安全性约束、网络约束和可靠性约束。在Dijkstra形成初始网架后,采用改进的遗传算法求解模型。最后,将其应用于上海某居民小区29节点的微网网架规划中,得出了最优网架规划方案。

Based on characteristics of optimal architecture planning in microgrid and outage costs of users, the corresponding model is proposed, in which the time-sequence property of distributed generation(DG) and load is included, considering both reliability, economy and user outage costs, to minimize the annual network cost. The constraints include power balance constraint, network operation constraint and reliability level constraints. Especially, the initial architecture is formed through Dijkstra algorithm, while improved genetic algorithm(GA) is adopted to solve the model. Finally, optimal architecture of a typical microgrid with 29 nodes is achieved in a residential block of Shanghai, which verifies feasibility of the proposed planning model and the corresponding solving algorithm.