考虑光伏的备用容量替代配置优化模型  

Alternative allocation optimization model of reserve capacity considering photovoltaic

作　　者：李猛 吴伟杰 吴杰康[2] 李红玲 张伊宁 李逸欣 郑敏嘉 孙辉 黄欣 LI Meng;WU Weijie;WU Jiekang;LI Hongling;ZHANG Yining;LI Yixin;ZHENG Minjia;SUN Hui(Grid Planning and Research Center,Guangdong Electric Power Co.,Ltd.,Guangzhou 510000,China;School of Automation,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东电网有限责任公司电网规划研究中心,广州510000 [2]广东工业大学自动化学院,广州510006 [3]不详

出　　处：《电力需求侧管理》2023年第2期15-22,共8页Power Demand Side Management

基　　金：广东电网有限责任公司科技项目(031000QQ00210010)。

摘　　要：在新能源环境下,负荷需求与新能源发电的不确定性对备用容量对提出了更高的要求,新能源与备用替代日益受到关注。根据电量不足期望值(expected energy not supplied,EENS)与备用容量的关系,确定了电力系统备用总量,并采用优先分配方式在多类型的发电机组中分配备用容量。基于EENS与运行成本,构建光伏发电系统替代火电机组的综合替代效益评价指标,以综合替代效益评价指标的数值最小化为目标函数,构建考虑光伏发电系统替代火电机组参与备用运行的电力系统备用容量优化模型。并用分段线性理论对具有二次特性的目标函数进行线性化处理,采用分支定界算法求解构建的非线性整数规划问题。以IEEE-30系统作为实例,计算结果表明,光伏发电系统替代火电机组参与备用运行,可以降低综合替代效益及备用容量。In the new energy environment, the uncertainty of load demand and new energy power generation puts forward higher requirements for reserve capacity, and new energy and reserve replacement receive increasing attention. Based on the relationship between expected energy not supplied(EENS)and reserve capacity, total reserve capacity of the power system is determined and capacity is allocated among various types of generating units in a preferential way. Based on EENS and operation cost, the evaluation index of comprehensive substitution benefit of photovoltaic power generation system replacing thermal power units is constructed. The value of comprehensive substitution benefit evaluation index is minimized as the objective function, and the optimization model of backup capacity of power system considering the photovoltaic power generation system replacing thermal power units in backup operation was constructed. The piecewise linear theory is used to linearize the objective function with quadratic characteristics, and the branch-and-bound algorithm is used to solve the nonlinear integer programming problem. Taking the IEEE-30 system as an example, the calculation results show that the photovoltaic power generation system replaces the thermal power unit in the standby operation, which can reduce the comprehensive substitution benefit and reserve capacity.

关 键 词：备用容量 光伏 优化替代 电量不足期望值 非线性整数规划 

分 类 号：TM615[电气工程—电力系统及自动化] TK02[动力工程及工程热物理]