电压-负荷调节架构下的配电网灵活资源多时间尺度控制技术  

Multi-Time Scale Control Technology for Flexible Resources in Distribution Networks Within Voltage-Load Regulation Framework

作　　者：敖非 余斌 李祖坤 吴晋波 胡斯佳 李勇[2] AO Fei;YU Bin;LI Zukun;WU Jinbo;HU Sijia;LI Yong(State Grid Hunan Electric Power Company Limited Research Institute,Changsha 410208,China;School of Electrical and Information Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]国网湖南省电力有限公司电力科学研究院,湖南长沙410208 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《湖南电力》2025年第1期112-120,共9页Hunan Electric Power

基　　金：国家自然科学基金联合基金项目(U22B20106);国网湖南省电力有限公司科技项目(重大专项)(5216A5220022)。

摘　　要：针对降压节能技术电压调整裕量有限、变频空调渗透率高且对电压变化灵敏度低的问题,提出一种电压-负荷调节构架下的配电网灵活资源多时间尺度控制技术。首先,对降压节能技术进行建模并分析其在配电网中的节能效益。其次,建立变频空调的负荷模型以评估其调控潜力。在此基础上,提出并制定一种配电网多时间尺度优化调控策略,在日前调度阶段,提前规划有载变压器(on load tap changer,OLTC)、空调负荷及分布式资源的调控方案,以减小配电网对上级电网的调峰压力,在日内优化阶段,针对可能出现的电压越限情况,实时调整OLTC挡位,并基于电气距离对配网中的柔性可调资源进行实时控制,以实现电网电压的快速恢复,增强系统的稳定性和鲁棒性。最后,基于IEEE 33节点系统进行案例分析,验证了所提策略的有效性。Aiming at the problems of limited voltage adjustment margin,high penetration rate of variable frequency air conditioners and their low sensitivity to voltage changes for conservation voltage reduction(CVR)technology,a multi-time scale control technology for flexible resources in distribution networks within the framework of voltage-load regulation is proposed.Firstly,CVR is modeled and its energy-saving benefits in the distribution network are analyzed.Secondly,a load model for variable frequency air conditioners is established to assess its regulation and control potential.On this basis,a multi-time scale optimization control strategy for the distribution network is proposed and formulated.In the day-ahead scheduling phase,the regulation and control schemes for onload tap changers(OLTC),air conditioning loads,and distributed resources are planned in advance to reduce the peak regulation pressure of the distribution network on the upper grid.In the intra-day optimization phase,in response to potential voltage limit violations,the OLTC gear is adjusted in real time,and flexible and adjustable resources in the distribution network are controlled in real time based on electrical distance to realize rapid recovery of grid voltage,thereby enhancing the stability and robustness of the system.Finally,a case study based on the IEEE 33-node system is conducted to verify the effectiveness of the proposed strategy.

关 键 词：配电网 迎峰度夏 降压节能 空调负荷 多时间尺度优化 电气距离 

分 类 号：TM714[电气工程—电力系统及自动化]