摘要
针对新能源发电和电动汽车大量接入配电网,给配电网的经济运行带来严峻挑战的现状,提出了一种基于电动汽车充放电功率和网络重构两种手段,以消纳新能源为目标的主动配电网两阶段协调优化调度策略。第1阶段建立日前优化调度模型,以弃风功率最小以及网络损耗最小为目标函数,优化电动汽车充电站24 h的调度策略并进行日前网络动态重构,通过基于判断矩阵的混合粒子群算法求解;第2阶段以日前调度结果为基础,建立集中型充电站10 min时间尺度的实时平滑控制策略,通过SOC自动调节原理,利用模糊控制算法,降低风功率曲线的波动。结果表明,通过两阶段调度,能够在满足用户需求的基础上,充分实现网络重构和电动汽车充放电功率间的协调,提高新能源的消纳能力。
Considering the serious challenge for the economic operation of distribution network due to the integration of renewable energies and electric vehicles(EVs),a two-stage coordinated optimal dispatching strategy for active distribu tion network is proposed to accommodate renewable energies based on EV charging/discharging power and network re configuration.On the first stage,a day-ahead dispatching model is established with the objective of minimum wind pow er curtailment and power loss,in which the dispatching strategy for an EV charging station in 24 h is optimized and the day-ahead dynamic network reconfiguration is performed;in addition,this model is solved using hybrid particle swarm algorithm based on judgement matrix.On the second stage,based on the day-ahead dispatching results,a real-time smoothing control strategy is established for the centralized charging station on 10-min scale to reduce the volatility of wind power curve using fuzzy control method and SOC automatic regulating principle.Results show that the two-stage dispatching can achieve the coordination between network reconfiguration and EV charging/discharging power on the ba sis of satisfying users’demand,thus improving the accommodation capability of renewable energies.
作者
赵德仁
丁雷
徐立华
金宇飞
宋季冬
李冰冰
ZHAO Deren;DING Lei;XU Lihua;JIN Yufei;SONG Jidong;LI Bingbing(State Grid Liaoyang Power Supply Company,Liaoyang 111000,China;State Grid Tieling Power Supply Company,Tieling 112000,China;State Grid Liaoning Economic and Technological Research Institute,Shenyang 110000,China;Guodian Huayan(Beijing)Electric Power Consulting Co.,Ltd,Beijing 102200,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2019年第8期94-101,共8页
Proceedings of the CSU-EPSA
关键词
电动汽车
优化调度
新能源
两阶段协调
electric vehicle
optimal dispatching
renewable energy
two-stage coordination
