摘要
针对传统的风电场装机容量优化方法不考虑风电波动对系统总运行成本的影响,导致风电场盲目扩张,加剧风电弃风的问题,引入风电波动成本,对风电场装机容量进行分步优化。首先,以风电场发电社会效益净现值为优化目标,考虑系统功率平衡、常规发电机组出力、网架线路传输容量、系统备用容量等约束条件建立机会约束规划模型,得到风电场装机容量优化解;其次,基于模型所得最优解和次优解分别建立装机容量待决策区间;接着引入基于集对分析D-U空间的混合型多属性评价,考察两者以风电场社会效益净现值、弃风率、线路传输安全裕度和缺电风险为评价指标的综合性能,确定最优装机容量。最后,通过算例对比分析,验证了所提方法的有效性。
Traditional optimization methods of installed wind power capacity do not take the impact of wind power fluctuation on the total operating cost of system into account, thus leading to blind expansion of wind farms and deterioration of wind power curtailment. In this paper, wind power fluctuation cost is introduced to optimize the installed capacity of a wind farm. Firstly, taking the net present value of the social benefit of a planned wind farm as optimization objective, a chance constraint programming model is established considering the constraints such as system power balance, conventional generator operation, grid transmission capacity limit, system reserve requirement and so on, where the optimal and sub-optimal solutions of installed capacity of the wind farm are obtained. Secondly, the installed capacity intervals to be assessed are set up based on above solutions. Then, a hybrid multi-attribute evaluation based on determination-uncertain(D-U) space of set pair analysis(SPA) is adopted to investigate the comprehensive performance of the both intervals with the evaluation indicators involving the net present value of the social benefit of the wind farm, wind curtailment rate, transmission safety margin and power shortage risk. Effectiveness of the proposed method is verified with case analysis contrastive with existing methods.
作者
江岳文
陈晓榕
JIANG Yuewen;CHEN Xiaorong(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,Fujian Province,China)
出处
《电网技术》
EI
CSCD
北大核心
2019年第12期4451-4460,共10页
Power System Technology
基金
国家自然科学基金项目(51707040)
福建省自然科学基金项目(2018J01482)~~
关键词
风电波动成本
风电装机容量
集对分析
联系数
风电社会效益
wind power fluctuation cost
installed wind power capacity
set pair analysis
connection number
social benefit of a wind farm
