采用区间多目标线性规划法的热电联供型微网日前调度  

Day-ahead Scheduling of Combined Heating and Power Microgrid with the Interval Multi-objective Linear Programming

作　　者：朱晓荣[1] 谢婉莹 鹿国微 ZHU Xiaorong;XIE Wanying;LU Guowei(State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources,North China Electric Power University,Baoding 071003,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,保定071003

出　　处：《高电压技术》2021年第8期2668-2677,共10页High Voltage Engineering

摘　　要：建筑物的热惯性及微网中的不确定因素会对微网的优化运行产生重要影响。针对含热电联供系统的微电网,首先建立了微网中各微源的数学模型及供热区域热惯性模型,并采用区间数学的方法对微网中可再生能源出力及电负荷的不确定性进行描述,在此基础上建立了采用区间多目标线性规划方法的优化调度模型。该模型以周期内微网运行的经济成本和环境成本最小为多目标,考虑微网中不确定因素的影响,并增加了散热器散热量作为控制变量,将传统热负荷平衡约束转化为室内温度满足人体舒适度要求。然后,结合分时电价,应用Cplex优化软件结合MATLAB编程实现了区间多目标线性规划的求解。算例结果表明,该多目标优化模型能在减少经济成本的同时实现较好的环境效益,并有效处理微网中的不确定因素。The thermal inertia of buildings and the uncertainties in a microgrid have an important impact on the optimal operation of the microgrid.To research the microgrid with combined heating and power(CHP)system,a mathematical model of the micro-sources and heating thermal inertia model was established firstly.Moreover,the uncertainty of renewable energies power and load power was described by using interval mathematics method.On this basis,an optimal scheduling model based on interval multi-objective linear programming(IMOLP)was established.In this model,the economic cost and environmental cost of microgrid operation were minimized for multiple objectives,the influence of uncertain factors in microgrid was considered,the heat dissipation of radiator was added as a control variable,and the traditional thermal load balance constraint was transformed into indoor temperature that meets the comfort requirements of human body.Then,combined with the time-sharing electricity price,the Cplex optimization software was combined with the MATLAB programming to achieve the IMOLP method.The results of examples show that the multi-objective optimization model can achieve good environmental benefits while reducing economic costs,and effectively deal with uncertainties in microgrids.

关 键 词：微电网 热电联供 区间多目标线性规划 不确定性 热惯性 新能源 分时电价 

分 类 号：TM73[电气工程—电力系统及自动化]