基于模糊多目标优化的电网日前风电接纳能力评估模型

发布时间：2019-02-11 19:57

【摘要】：随着风电渗透率的日益提高,我国部分电网出现了日益严重的"弃风"现象。从日前时间角度对电网风电接纳能力进行评估有利于优化系统的调度运行,提高风电利用率。构造了以最大化接纳风电和经济发电为目标的电网多目标日前风电接纳能力评估模型。为协调2个互相矛盾的优化目标,通过定义目标隶属度函数将确定性问题模糊化,采用最大化满意度指标法将所构建的多目标优化问题转化为单目标优化问题。以IEEE118节点54机测试系统为例,利用GAMS仿真平台对模型进行了求解。结果表明:上述模型能兼顾风电接纳能力的最大化及系统发电的经济性,计算结果可为调度人员制定日前计划提供参考,有利于提高风电利用率并降低发电成本。
[Abstract]:With the increasing permeability of wind power, the phenomenon of "abandoning wind" appears increasingly serious in some power grids in China. From the point of view of pre-day time, it is helpful to optimize the dispatching operation of the system and to improve the utilization rate of wind power by evaluating the wind power acceptance capacity of the power grid. In this paper, a multi-objective pre-day wind power capacity evaluation model is constructed, which aims at maximizing the acceptance of wind power and economic power generation. In order to coordinate two contradictory optimization objectives, the deterministic problem is fuzzy by defining the objective membership function, and the multi-objective optimization problem is transformed into a single-objective optimization problem by using the maximum satisfaction index method. Taking the test system of IEEE118 node 54 as an example, the model is solved by GAMS simulation platform. The results show that the above model can take into account the maximization of wind power acceptance capacity and the economy of power generation, and the calculation results can provide reference for dispatchers to make plans before the day, which is helpful to increase the utilization rate of wind power and reduce the generation cost.
【作者单位】：河海大学能源与电气学院;中国电力科学研究院;
【基金】：国家电网公司总部科技项目(新能源发电接纳能力评估分析平台研发与示范应用)~~
【分类号】：TM614

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