含高渗透率光伏电场的联合发电系统优化运行研究
吴志明
（华中科技大学 电气与电子工程学院，湖北 武汉 430074）
摘 要：针对含高渗透率光伏的联合发电系统优化运行问题，提出了联合系统协调优化模型。对含高渗透率光伏电场的联合发电系统差异性进行研究，分析得出运行优化特征；综合考虑常规机组燃料成本、启停成本、排污成本及弃光量，建立了以联合发电系统各供能主体的逐时出力与火电机组的启停变量为优化变量的目标函数，通过模型求解，实现联合发电系统的整体运行成本与弃光量最小的优化目标；所提出模型能够最大程度提高系统光伏电场接纳能力以及含高渗透率光伏发电电力系统的运行经济性。应用该模型对一个测试系统进行计算仿真和分析，结果证明了模型的适用性和有效性。
关键词：高渗透率光伏；联合发电系统；协调优化模型；逐时出力
中图分类号：TM615 文献标识码：A 文章编号：1007-3175(2018)01-0023-04
Study on Optimal Operation of Joint Power System with High Permeability Photovoltaic Electric Field
WU Zhi-ming
（School of Electric and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China）
Abstract: Aiming at the optimal operation of the combined power generation system with high permeability photovoltaic, this paper proposed a joint system coordination and optimization model. This paper researched on the difference of the joint generation system with high permeability photovoltaic and obtained the operation optimization characteristics. Based on this, considering the conventional unit fuel cost, start and stop cost, sewage cost and the amount of discarded light, this paper established the objective functions taking the starting and stopping variables of time-dependent output and thermal power unit of main energy supply of combined operation system as the optimization variables. The solution method for model realized the optimal operation target of combined operation system and the minimum amount of discarded light. The proposed model can improve the maximum capacity of the system photovoltaic system and the operating economy of high-permeability photovoltaic power generation system. This model is used to carry out the system test and simulation analysis. The results verify the applicability and validity of the model.
Key words: high permeability photovoltaic energy; joint generation system; coordinated optimization model; time-dependent output
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