摘要
分布式新能源以“点多面广”的特征并入各级配电网,电网呈现新能源多层级接入、一体化消纳的特征。为促进新能源的充分消纳与高效利用,提出了一种多层级配电网新能源最大消纳空间测算模型,并将分布式新能源最大消纳空间测算问题转换为各层级配电网新能源最大消纳空间测算子问题,实现了各层级配电网分布式新能源最大消纳空间的精确测算。首先,以多层级配电网新能源接入量最大为目标函数,基于Distflow潮流模型建立多层级配电网分布式新能源消纳空间测算模型;然后,针对模型非凸以及求解效率低等问题,基于二阶锥松弛将模型转化为混合整数二阶锥规划模型,采用交替方向乘子法(alternating direction method of multipliers,ADMM),将多层级配电网新能源消纳空间测算问题转化为各级配电网新能源最大消纳空间子问题,将消纳空间模型转化为多层级配电网分布式新能源最大消纳空间分解测算模型;最后,以IEEE 6、7、9、10、12、15测试系统为例,验证该方法的有效性。
With the integration of distributed renewable energy sources(RES)into various levels of distribution networks characterized by their"numerous and widely distributed"nature,the power grid exhibits a multi-level access and integrated consumption pattern for renewable energy.To facilitate the full consumption and efficient utilization of renewable energy,a model for calculating the maximum consumption capacity of RES in multi-level distribution networks is proposed.This approach transforms the complex task of estimating the maximum RES consumption capacity in the entire system into sub-problems focused on individual distribution network levels,thereby enabling precise measurements of the maximum RES consumption space at each level.Firstly,with the objective of maximizing the RES penetration within the multi-level distribution network,a consumption space calculation model is established based on the Distflow power flow model.Secondly,to address the issues of non-convexity and low solution efficiency inherent in the model,a second-order cone relaxation technique is applied to transform the model into a mixedinteger second-order cone programming(MISOCP)model.Subsequently,the alternating direction method of multipliers(ADMM)is employed to decompose the overall RES consumption space estimation problem into sub-problems focused on individual distribution network levels,effectively transforming the consumption space model into a decomposed calculation model for the maximum RES consumption capacity across the multi-level distribution network.Finally,the effectiveness of this methodology is demonstrated through simulations on the IEEE 6,7,9,10,12,and 15 test systems.
作者
孙东磊
孙毅
刘蕊
孙鹏凯
张玉敏
SUN Donglei;SUN Yi;LIU Rui;SUN Pengkai;ZHANG Yumin(Economic and Technical Research Institute of State Grid Shandong Electric Power Company,Jinan 250021,China;Key Laboratory of Smart Grid Dispatch and Control(Shandong University),Jinan 250061,China)
出处
《中国电力》
CSCD
北大核心
2024年第8期108-116,共9页
Electric Power
基金
国家电网有限公司科技项目(5400-202216412A-2-0-ZN)。
关键词
多层级配电网
分布式新能源
最大消纳空间
二阶锥松弛
交替方向乘子法
multi-level distribution network
distributed energy resource
maximum accommodation capacity
second order cone relaxation
alternating direction method of multipliers
