摘要
风电出力波动给电力系统调度带来额外负担从而产生波动成本。因为平滑效应,合作并网可降低各风电场的总波动成本,由此又产生波动成本分摊的问题。提出一种基于改进Shapley值的风电波动成本分摊策略。首先,用等电量–顺负荷法获得风电场等效曲线,并以此设计出波形相似度指标来表现风电跟踪负荷变化的程度,衡量各风电场出力波动给电网带来的影响;其次,用Shapley值法对集群波动成本进行初步分摊;最后,提出一个结合负荷跟踪程度与发电量影响的波动成本分摊系数来改进Shapley值法的分摊结果。算例结果表明改进的分摊策略综合考量各因素的影响,分摊结果更公平合理。
The wind power fluctuation puts additional burdens on the power system dispatching and causes extra fluctuation costs. Due to the smoothing effect, cooperation of the wind farms reduces the total fluctuation costs of each wind farm, while leading to an allocation problem of the fluctuating costs. This paper proposes a wind power fluctuation cost allocation based on the improved Shapley value. Firstly, the equivalent curve of a wind farm is obtained in the "equal-kWh following load" method. With this curve,the waveform similarity index is designed to show the changes of the load tracking of the wind power, reflecting the impacts of wind power fluctuation of the farms on the power grid. Secondly, the Shapley value method is used to preliminarily allocate the total fluctuation costs. Finally, a fluctuation cost allocation index combining the influences of the load tracking changes of wind power and the generating capacity is proposed to improve the allocation results by using the Shapley value. The proposed allocation strategy with the improved Shapley value considers the influences of various factors and the allocation results are more fair and reasonable, which verifies in this paper.
作者
郑晨昕
江岳文
ZHENG Chenxin;JIANG Yuewen(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
2021年第11期4387-4394,共8页
Power System Technology
基金
国家自然科学基金资助项目(51707040)。
