配电网实时建模技术及关键问题研究综述

Review on Real-time Modeling Technology and Key Issues of Distribution Network

随着智能电网建设的推进,智能采集设备终端铺设率大大提高,需求侧终端电气化已成为不可逆转的发展趋势。近年来,低压配电网由于系统信息更新不及时和管理的无序性导致配网拓扑与实际配置信息出现偏差。这些问题的出现影响配电网安全运行的同时,也对供电企业经营风险造成了影响,迫切需要探索配电网的实时建模技术,以精准辨识用户的接入信息,保障配电网的安全稳定运行。为此,首先从配电网结构特点、供电方式和配电网模型信息集成技术三方面分析了配电网的技术概况。在此基础上,从物理拓扑分析、拓扑辨识以及拓扑关键校验技术综述了配电网实时建模关键问题的研究现状,并进一步围绕配电网实时建模关键技术对未来可能的研究方向进行了展望,以期为未来研究提供参考。

With the advance of smart power grid construction,the terminal laying rate of intelligent acquisition equipment has been greatly improved,and the demand-side terminal electrification has become an irreversible trend.In recent years,the problems of users'default power supply and private overlapped lines in low-voltage distribution system frequently appear.The emergence of these problems not only affects the safe operation of the distribution network,but also affects the operation risks of power supply enterprises.It is urgent to explore the real-time modeling technology of the distribution network to accurately identify the access information of users and ensure the safe and stable operation of the distribution network.Firstly,the technical situation of distribution network was analyzed from three aspects:structure characteristics,power supply mode and information integration technology of distribution network model.On this basis,the research status of the key issues of distribution network real-time modeling was summarized from the physical topology analysis,topology identification and topology key verification technologies.Furthermore,the possible future research directions were prospected based on the key technologies of distribution network real-time modeling,in order to provide reference for future research.