三峡大学学报（自然科学版）2024，Vol.46Issue(3)：84-90,7.DOI:10.13393/j.cnki.issn.1672-948X.2024.03.013
基于可信容量的长期储能充裕性决策分解模型
Adequacy Decision Decomposition Model of Power Generation Capacity for Long-Term Energy Storage Based on Credible Capacity
摘要
Abstract
The adequacy of power generation capacity is an important index to characterize the capacity of power generation in power system.Rationally mobilizing long-term energy storage and making the full use of its ability to transfer electricity is an important method to balance the fluctuation of system adequacy.In order to solve the problem of transfer power allocation in the annual cycle of long-term energy storage,a decision decomposition model of long-term energy storage adequacy based on credible capacity is proposed.In view of the different evaluation levels of new energy units and conventional units,the new energy is equivalent to conventional units by using the new energy credible capacity evaluation based on the other reliability index.The method is adopted to evaluate the contribution of new energy units to the adequacy of power system.Considering the factors of forced outage,the adequacy capacity of the unit is adjusted,and the influence of long-term energy storage transfer on the system adequacy is analyzed.According to the method of system adequacy evaluation,a adequacy decision decomposition model with long-term energy storage transfer as decision variable is constructed.Meanwhile,the relevant constraint conditions are established after the self-discharge and charge-discharge loss of long-term energy storage is considered.Furthermore,because of the nonlinear and subsection characteristics of the model,the line-up competition algorithm is utilized to solve it.At the same time,the line-up competition algorithm is improved in order to overcome the difficulty of selecting shrinkage rate,.A numerical example is set to analyze the contribution degree of new energy and conventional units to the sufficiency of power generation capacity in the system.Moreover,the feasibility of the decision decomposition model of long-term energy storage adequacy is verified.The superiority of the improved line-up competition algorithm is proved through comparing with the algorithms.关键词
发电容量充裕性/长期储能/可信容量/列队竞争算法Key words
power generation capacity adequacy/long-term energy storage/credible capacity/line-up competition algorithm分类
动力与电气工程引用本文复制引用
王凌云,方媛,李振华,王敏..基于可信容量的长期储能充裕性决策分解模型[J].三峡大学学报（自然科学版）,2024,46(3):84-90,7.基金项目
武汉强磁场学科交叉基金资助(WHMFC202202) （WHMFC202202）
