Characteristics and Simulation of Icing Thickness of Overhead Transmission Lines across Various Micro-Terrains

Guosheng Huang (), Mingli Wu, Zhen Qiao, Songping Fu, Qiujiang Liu, Xiaowei Huai () and Pengcheng Yan
Additional contact information
Guosheng Huang: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100091, China
Mingli Wu: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100091, China
Zhen Qiao: China (Beijing) Railway Construction Electrification Design & Research Institute Co., Ltd., Beijing 100043, China
Songping Fu: China Railway Construction Electrification Bureau Group Co., Ltd., Beijing 100043, China
Qiujiang Liu: School of Electrical Engineering, Beijing Jiaotong University, Beijing 100091, China
Xiaowei Huai: Hunan Disaster Prevention Technology Co., Ltd., Changsha 410129, China
Pengcheng Yan: Hunan Disaster Prevention Technology Co., Ltd., Changsha 410129, China

Energies, 2024, vol. 17, issue 16, 1-11

Abstract: The hazard of ice accretion on overhead power circuits is significant, yet predicting it is very difficult. The key reason lies in the shortage of sufficient observational data on ice thickness, and previous studies have also rarely taken into account micro-terrain and micro-meteorological conditions. In response to the challenge of simulating overhead line icing, this study introduces a new icing simulation technique that fully considers the effects of micro-terrain and micro-meteorology. For this technique, typical micro-terrains of overhead line areas are first identified by using high-resolution elevation data, and the icing thickness characteristics in different micro-terrains are analyzed. Subsequently, icing thickness simulations for different micro-terrains are conducted. The results indicate that during the icing process, the icing thickness ranges from 5 mm to 8 mm under three types of micro-terrain, namely, “uplift type”, “alpine drainage divide type” and “canyon wind channel type”, whereas the icing thickness is less than 5 mm in the “flat type” of micro-terrain. This finding suggests that the first three micro-terrain types facilitate icing on overhead transmission lines due to the condensation and uplifting effects of water vapor caused by terrain. However, flat terrain lacks the conditions necessary for water vapor accumulation and thus is not easy to form icing. The results are advantageous for the deployment of overhead power lines in intricate terrain. It is advisable to steer clear of regions susceptible to icing, and endeavor to install circuits in level territories whenever feasible. In addition, the simulated icing thickness under different terrains is in good agreement with the observations. Specifically, the correlation coefficient between simulated and observed icing thickness is significant at the 0.99 confidence level, and the deviations between them are within 0.5 mm. This signifies that the forecasting methodologies employed are dependable and possess significant implications as a reference for disaster prevention and mitigation efforts.

Keywords: overhead transmission lines; micro-terrain; icing thickness; simulation technique (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/17/16/4024/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/16/4024/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:17:y:2024:i:16:p:4024-:d:1455955

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().