计及风火系统聚合特性的虚拟电厂经济调度研究  

Economic Dispatch of Wind-Thermal Power System by Using Aggregated Output Characteristics of Virtual Power Plants

作　　者：刘红岩 李明扬[2] 梁钰 方连航 

机构地区：[1]海南电力技术研究院,海南海口570125 [2]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《热能动力工程》2017年第12期61-65,共5页Journal of Engineering for Thermal Energy and Power

摘　　要：提出一个VPP(虚拟发电厂)聚合出力特性的含新能源电网的两阶段经济调度模型。第一阶段基于包含若干风场与火电机组的VPP聚合出力特性决策VPP的总出力;第二阶段将总出力在VPP内部各发电单元之间进行分配。上述两个阶段都采用线性规划方法求解。基于IEEE—6母线电网的数值算例的计算结果表明,与传统经济调度方法相比,本研究提出的模型能降低风电弃风量近50%。Application of the virtual power plant( VPP) concept is one of the most promising ways to properly utilize the intermittent and stochastic renewable energy in power grids,while the aggregated output characteristics of VPP have not been well studied yet. This paper presents a two-phase economic dispatch model considering the aggregated VPPs for systems with renewable energy. In phase 1,outputs of VPPs consisting of several wind and thermal generators are decided by the grid operator,with characteristics of such VPPs obtained by aggregating those of individual generators. Then in phase 2,an output dispatch is performed among individual generators within each VPP by its aggregator. Models of the above two phases are both solved by using linear programming methods. Numerical results on a 6-bus system show that compared with conventional economic dispatch models,our model reduces wind power curtailments by nearly 50%.

关 键 词：虚拟发电厂 经济调度 风能利用 聚合特性 

分 类 号：TK019[动力工程及工程热物理]