An Improved Procedure for the Assessment of Overhead Line Indirect Lightning Performance and Its Comparison with the IEEE Std. 1410 Method

• Published in: IEEE transactions on power delivery Vol. 22; no. 1; pp. 684 - 692
• Main Authors: Borghetti, A., Nucci, C.A., Paolone, M.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.01.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Assessments; Conductivity; Conductors; Distribution overhead lines; Electric potential; Electrical engineering. Electrical power engineering; Electrical power engineering; Exact sciences and technology; Flashover; Grounding; Insulation; insulation coordination; Insulators; Lightning; lightning-induced overvoltage (LIOV) code; lightning-induced voltages; Mathematical analysis; Mathematical models; Miscellaneous; Monte Carlo simulation; Overhead networks; Power distribution lines; Power networks and lines; Reliability engineering; Various equipment and components; Voltage; Voltage control; Wire; Performance evaluation; Insulator; Electric energy transportation; Coordination of insulation; Electric discharge; lightning-induced voltages; Induced voltage; Lightning discharge; Electric power; Electrical flashover; IEEE standards; Distribution network; Monte Carlo method; Dielectric materials; Lightning overvoltage; Distribution overhead lines; Critical voltage; Electrical network; Lightning; lightning-induced overvoltage (LIOV) code; Numerical simulation; Overhead line; Comparative study; Monte Carlo simulation; Power transmission line; insulation coordination
• ISSN: 0885-8977; 1937-4208
• DOI: 10.1109/TPWRD.2006.881463

This paper deals with the assessment of the lightning performance of distribution lines, namely the estimation of the annual number of lightning-induced flashovers versus the critical flashover voltage of the line insulators. The procedure proposed by the authors is compared with the one described in IEEE Std. 1410-2004 Guide for improving the lightning performance of electric power overhead distribution lines. The two methods differ: 1) for the models adopted to evaluate the induced voltages and 2) for the adopted statistical approach. The reasons for differences in the results predicted by the two methods are discussed and the parameters playing the major role in the achievement of the results are identified. The proposed method represents an improvement compared to IEEE Std. 1410 because it takes into account more realistic line configurations and the effect of the finite ground conductivity