Review and Expectation of Lightning Shielding Failure Risk Digital Evaluation for Transmission Lines Based on EGM

被引：0
|
作者：
Du Y. [1 ]
Huang L. [2 ]
Jin Z. [1 ]
Weng Y. [1 ]
Dong X. [1 ]
Shen X. [2 ]
机构：
[1] State Grid Hubei Electric Power Co., Ltd, Maintenance Company, Wuhan
[2] Department of Electrical Engineering, Tongji University, Shanghai
来源：
Gaodianya Jishu/High Voltage Engineering | 2022年 / 48卷 / 10期
关键词：
digitization; EGM; lightning shielding failure; overhead transmission line; risk evaluation;
D O I：
10.13336/j.1003-6520.hve.20220078
中图分类号：
学科分类号：
摘要：
The quantitative evaluation of lightning shielding risk is an important basis for lightning protection of overhead transmission lines, which is helpful to determine the weak points of lightning protection and implement targeted lightning protection measures. Firstly, all kinds of typical line landforms are summarized; meanwhile, the impacts of landform and line structure on lightning shielding risk, as well as the value of whole line corridor refinement and split-phase accurate evaluation, are expounded. Secondly, the characteristics of typical models of overhead line lightning shielding risk evaluation are analyzed, and some suggestions on the digitization and refinement of lightning shielding risk evaluation of transmission line based on electro-geometric model (EGM) are put forward in combination with the ease of project implementation. Then, the research status of model parameter extraction and data organization technology of transmission line shielding risk evaluation based on EGM is combed, and some problems of the current technology are pointed out, such as shallow intelligence of parameter extraction, weak expressiveness of data organization, information dispersion and so on. Finally, the trends and challenges are discussed from the aspects of lidar point cloud data acquisition and preprocessing, intelligent extraction of EGM parameters, evaluation objects and data fusion efficiency, among which the automatic realization of small particle size traversal for parameter extraction and the three-dimensional visualization and multi-source synergy for data organization and display will be the future research priorities. The research results can provide a certain reference for deepening application of digital technology in lightning shielding risk evaluation of transmission lines. © 2022 Science Press. All rights reserved.
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页码：3900 / 3909
页数：9
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