现代电力2025，Vol.42Issue(5)：878-890,13.DOI:10.19725/j.cnki.1007-2322.2023.0367
面向数字孪生电网设施虚实映射的边缘网络资源分配方法
An Edge Network Resource Allocation Method for Virtual-real Mapping for Digital Twin Power Grid Facilities
摘要
Abstract
The digital twin power grid digitizes the physical power grid through virtual-real mapping.The current virtual real mapping process of power grid facilities,however,faces challenges in terms of limited accuracy in reconstructing static models and poor real-time dynamic response.The traditional manual establishment of static models is inefficient and challenging,making it unsuitable for construction of model in complex power grid.The traditional cloud computing model fails to meet the diverse demands of numerous randomly transmission services during model reconstruction and response processes.Therefore,in this paper we propose a new edge network resource allocation method for virtual-real mapping of digital twin power grid facilities.Firstly,a feature matching method of double threshold nearest neighbor ratio is proposed based on the fusion of Shi-Tomasi and SURF algorithms.Additionally,the random sample consensus(RANSAC)algorithm is further integrated to enhance the accuracy of camera pose estimation,thereby improving the accuracy of the three-dimensional reconstruction model of power grid facilities.The aforementioned foundation serves as the basis for designing utility functions for different transmission delay and accuracy requirements,while also presents a method for subchannel and power resource allocation so as to achieve on-demand allocation of communication resources.In addition,a cloud-edge-end data interaction architecture is built to support the above process.Compared with Shen algorithm and channel average allocation algorithm,our algorithm can improve data transmission timeliness by 9.03%and 31.30%respectively,while ensuring data transmission accuracy.Moreover,the algorithm effectively facilitates the accurate and efficient virtual-real mapping process of power grid facilities.关键词
数字孪生电网/虚实映射/异构业务/移动边缘网络/通信资源分配/三维重建Key words
digital twin power grid/virtual-real mapping/heterogeneous service/mobile edge network/communication resource allocation/three-dimensional reconstruction分类
信息技术与安全科学引用本文复制引用
胡平,韩璟琳,陈志永,李想,连浩然,邢志坤..面向数字孪生电网设施虚实映射的边缘网络资源分配方法[J].现代电力,2025,42(5):878-890,13.基金项目
国家电网总部科技项目(面向清洁能源消纳的区域能源互联网建设关键技术研究及试点应用(5100-202113564A-0-5-SF)).Project Supported by State Grid Headquarters Science and Technology Project(Key technology research and pilot application of regional energy internet construction for clean energy consumption(5100-202113564A-0-5-SF)). （面向清洁能源消纳的区域能源互联网建设关键技术研究及试点应用(5100-202113564A-0-5-SF）
