Long Wire Antenna-Like Behavior of Uninsulated Overhead Distribution Cables

Autor:	K. L. Wong, Wayne S. T. Rowe, S. C. Fernando
Rok vydání:	2012
Předmět:	Materials science business.industry Acoustics Attenuation Electrical engineering Energy Engineering and Power Technology Radiation Directivity Signal Beverage antenna Radiation pattern Electric arc Radio frequency Electrical and Electronic Engineering business
Zdroj:	IEEE Transactions on Power Delivery. 27:1116-1123
ISSN:	1937-4208 0885-8977
DOI:	10.1109/tpwrd.2012.2196769
Popis:	Uninsulated overhead distribution cables are evaluated in terms of their propagation and radiation behavior when excited by a partial-discharge (PD) pulse. Low attenuation levels at high frequency and a traveling-wave radiation pattern are observed for a single aluminum cable. The dominant radiated frequency components of surface discharge and dryband arcing are experimentally evaluated, and a high level of activity is observed in the 400-600-MHz and 900-1000-MHz bands. High directivity values at specific angles are also recorded at 400 and 900 MHz for single- and three-cable distribution systems. These findings show that a PD signal will travel for a significant distance along a cable and leak radiation predominantly in a specific direction, thus assisting the design of the RF-based discharge detection and localization system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::17c882836e6b542ff24b9bfe6eb4cee2 https://doi.org/10.1109/tpwrd.2012.2196769 Zobrazit plný text záznamu