考虑DG功率非线性特性和综合负荷建模的DG和DR协同规划  

Coordinated Planning of DG and DR Considering Nonlinear Power Characteristics of DG and Synthetic Load Model

作　　者：谭心怡 吕林[1] 高红均[1] 吴泓灏 周博[1] TAN Xinyi;LI] Lin;GAO Hongjun;WU Honghao;ZHOU Bo(School of Electrical Engineering and Information,Sichuan University,Chengdu 610065,Sichuan Province,China)

机构地区：[1]四川大学电气信息学院

出　　处：《电网技术》2018年第9期2958-2966,共9页Power System Technology

基　　金：国家高技术研究发展计划(2014AA051901);国家自然科学基金项目(51377111);中央高校基本科研业务费专项资金资助(YJ201750)~~

摘　　要：通过对考虑电压静特性的综合负荷和不同负荷转移比例的需求响应进行建模,以总投资、总运行费用净现值最小为优化目标,构建双层多阶段分布式电源和需求响应协同规划模型。重点对具有强烈的非线性功率特性的风电机组和微型燃气轮机进行分段线性化处理,然后,将投资层变量与运行层耦合关联为单层优化模型,采用Big-M方法对衍生出的双线性项进行处理,结合支路潮流二阶锥松弛技术,最终将原双层非线性模型转化为单层混合整数二阶锥规划问题进行求解。最后,通过33节点系统分析验证了所提模型和求解方法的有效性。Based on modeling of synthetic load considering static voltage characteristics and DR constraints with different transfer load ratios, a novel bi-level multistage coordinated distribution network planning model considering distributed generation（DG） and demand response（DR） is proposed in this paper. Optimization objective is to minimize net present value of investment and operating cost. It emphasizes on piecewise linear approximation for nonlinear power characteristics of wind turbine generator and micro-turbine generation. The investment variables are coupled into operation stage to form a single stage optimization model, resulting in bilinear variables linearized with big-M method. By combining the second-order relaxation of branch power flow, the former bi-level nonlinear model is converted to a mixed integer second-order cone programming（MISOCP）, which can be solved quickly and efficiently. Finally, rationality and effectiveness of the proposed model are verified with modified 33 node system.

关 键 词：协同规划 功率非线性特性 综合负荷 需求响应 二阶锥松弛 

分 类 号：TM715[电气工程—电力系统及自动化]