摘要
针对智能配电网系统中大量微电网接入遇到的安全稳定运行问题,提出了一种基于双层优化策略的多微网智能配电网联合优化模型。底层构建的多微网系统优化模型以发电成本、环境成本,以及多微网与智能配电网之间的功率交换成本在内的总运行成本最小为目标。结合运行成本和净负荷峰谷差,构建上层智能配电系统的优化模型。利用二阶锥松弛法和线性化方法将双层模型分别转化为二阶锥规划和混合整数线性规划问题进行求解,最后通过MATLAB调用Cplex求解器求解模型。选取标准IEEE 33节点配电系统作为算例进行仿真验证。仿真结果显示,该模型在减少智能配电系统和多微网系统的运行成本的同时,减轻了智能配电系统的负荷波动提高了智能配电系统的电能质量。
Aiming at the problem of safe and stable operation of a large number of microgrids in intelligent distri-bution system,a multi-microgrid intelligent distribution network optimization coordination model based on two-layer optimization strategy is proposed.At the bottom layer,an optimization model is constructed to minimize the total operating cost of the multi-microgrid system,including the generation cost,the environment cost and the power exchange cost between the multi-microgrid system and the distribution network.Combined with op-eration cost and net load peak-valley difference,the optimization model of upper intelligent distribution system is constructed.The two-layer model is transformed into second-order cone programming and mixed integer lin-ear programming by second-order cone relaxation method and linearization method.Finally,the Cplex solver is called by MATLAB to solve the model.The standard IEEE 33-node distribution system is seleeted as an ex-ample for simulation verification.The results show that the model not only reduces the operating cost of intelli-gent distribution system and multi-microgrid system,but also reduces the load fluctuation of intelligent distribu-tion system and improves the power quality of intelligent distribution system.
作者
黄伟
苗桂喜
王鑫
元亮
马辉
HUANG Wei;MIAO Guixi;WANG Xin;YUAN Liang;MA Hui(School of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,China;Anyang Power Supply Company,State Grid Henan Electric Power Co.,Ltd.,Anyang 455000,China)
出处
《电力学报》
2024年第2期136-144,共9页
Journal of Electric Power
基金
梯级水电站运行与控制湖北省重点实验室(三峡大学)(2022KJX05)。
关键词
多微网
智能配电系统
上下层能量交互
优化运行
multi-microgrid
intelligent power distribution system
upper and lower energy interaction
opti-mized operation
作者简介
黄伟(1999-),男,硕士研究生,主要从事微电网优化调度相关研究工作,huangdaxiactgu@163.com;苗桂喜(1975-),男,高级工程师,主要从事新能源系统控制及规划相关研究工作,miao.gx@163.com;王鑫(1992-),男,高级工程师,主要从事新能源系统控制及规划相关研究工作,13937266717@163.com;元亮(1992-),男,工程师,主要从事数字化配电系统稳定运行相关研究工作,q1136463356@163.com;马辉(1985-),男,博士,副教授,主要从事微电网优化调度相关研究工作,mahuizz119@126.com。
