基于多区间不确定集的电-气互联有功-无功协同鲁棒优化方法  

An Active-Reactive Power Coordinated Robust Optimization Method for Electricity Gas Interconnection Based Multiple Interval Uncertain

作　　者：林朝华 张军达 吴荣芬 梁海天 王秋萍 廖小兵 LIN Chaohua;ZHANG Junda;WU Rongfen;LIANG Haitian;WANG Qiuping;LIAO Xiaobing(State Grid Zhejiang Integrated Energy Service Company,Hangzhou 310016,China;School of Electrical and Information Engineering,Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]国网浙江综合能源服务有限公司,杭州市310016 [2]武汉工程大学电气信息学院,武汉市430205

出　　处：《电力建设》2025年第4期137-149,共13页Electric Power Construction

基　　金：国家自然科学基金项目(52107122);国网浙江省电力有限公司科技项目(5211TZ230002)。

摘　　要：【目的】为了准确描述新能源输出功率的波动性和随机性对电-气互联系统运行的影响,并提高电-气互联系统优化运行的鲁棒性,提出了多区间不确定集鲁棒优化方法。【方法】首先,构建分布式光伏出力的传统区间集合,然后考虑时间相关性建立单区间相关性不确定集;其次,针对传统集合存在鲁棒性差和保守性大的问题,将单区间集合进行切割划分,得到多区间相关性集合;然后,考虑能源转换装置建立了基于多区间不确定集的电-气互联有功-无功协同鲁棒优化模型;最后,通过改进的IEEE 33节点电网与比利时20节点气网互联系统算例进行仿真验证。【结果】结果表明,考虑多区间不确定集的电-气互联有功-无功协同鲁棒优化方法可以减少保守性,提高优化结果鲁棒性,证明了所提方法的有效性。【结论】提出的基于多区间不确定集的电-气互联有功-无功协同鲁棒优化方法,不仅能够有效应对新能源波动性带来的挑战,还能在降低保守性的同时提高系统的鲁棒性。该方法为电-气互联系统的优化运行提供了新的解决方案,对推动高比例新能源接入下的能源系统安全、经济运行具有重要意义。[Objective]To accurately describe the impact of the volatility and randomness of the output power of new energy sources on the operation of an electricity-gas interconnected system and improve the robustness of its optimal operation,a robust optimization method based on multiple-interval uncertainty sets is proposed.[Methods]First,the traditional interval set of a distributed photovoltaic output is constructed,and then,a single-interval correlation uncertainty set is established considering the time correlation.Second,to solve the problems of poor robustness and large conservatism in the traditional set,the single-interval set is cut and divided to obtain a multi-interval correlation set.Furthermore,considering the energy conversion device,an active-reactive power coordinated robust optimization model based on the multi-interval uncertainty set is established for electricity-gas interconnection.[Results]The simulation results for the improved IEEE 33 node power grid and Belgium 20 node gas network interconnection system showed that the proposed method could reduce the conservatism and improve the robustness of the optimization results,thus proving the effectiveness of the proposed method.[Conclusions]The proposed active-reactive coordinated robust optimization method for an electricity-gas interconnected system based on the multiple interval uncertainty set can not only effectively deal with the challenges generated by the volatility of new energy sources but also improve the system’s robustness while reducing the conservatism.This method provides a new solution for the optimal operation of an interconnected electricity-gas system and is of great significance for promoting safe and economic operation of energy systems with access to a high proportion of new energy sources.

关 键 词：多区间不确定集 电-气互联 相关性 鲁棒优化 

分 类 号：TM732[电气工程—电力系统及自动化]