Modelling of Dynamic Transmission Cable Temperature Considering Soil-Specific Heat, Thermal Resistivity, and Precipitation

Autor:	Unnur Stella Gudmundsdottir, J. Holboell, George J. Anders, Rasmus Schmidt Olsen
Rok vydání:	2013
Předmět:	Electric power transmission Thermal conductivity Electronic engineering Energy Engineering and Power Technology Environmental science Point (geometry) Mechanics Precipitation Electrical and Electronic Engineering Current (fluid) Temperature measurement Water content Power (physics)
Zdroj:	IEEE Transactions on Power Delivery. 28:1909-1917
ISSN:	1937-4208 0885-8977
Popis:	This paper presents an algorithm for the estimation of the time-dependent temperature evolution of power cables, when real-time temperature measurements of the cable surface or a point within its vicinity are available. The thermal resistivity and specific heat of the cable surroundings are varied as functions of the moisture content which is known to vary with time. Furthermore, issues related to the cooling effect during rainy weather are considered. The algorithm is based on the lumped parameters model and takes as input distributed temperature sensing measurements as well as the current and ambient temperature. The concept is verified by studying a laboratory setup of a 245 kV cable system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ac02545d2d5cad730a3f906d4cb67b41 https://doi.org/10.1109/tpwrd.2013.2263300 Zobrazit plný text záznamu