Calculation of Lightning Outage Rate of High Voltage Transmission Line

Geng, Jianghai; Jia, Boyan; Gao, Shuguo

doi:10.1109/appeec.2012.6307346

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…There's a risk that lightning could strike the tops of poles, inducing lightning surges in the phase conductors. The poles must be grounded in order to prevent the transients in the system [5]. The conduction between the pole and the overhead line cables is stopped with the help of high insulations which prevents the cables from direct contact to the pole.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Surge Voltages on the Overhead Lines due to Direct and Indirect Lightning Impulse

Lalith¹,

Sridhar²,

Gatla³

et al. 2021

JESA

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This paper is devoted to describe how surge magnitudes are calculated and how do we use this data in order to determine the ageing of insulation on the transmission line poles so that we can replace the insulation in pre fault time, based on its condition. The main object of this report is to design algorithm of implementation of SCADA in the transmission line system to identify insulation ageing factor. In order to identify the magnitude of voltage due to direct lightning source, we have some formulae which provides the approximate value. For the magnitude value due to indirect lightning strokes, we use two methods namely RBF-FDTD method which uses artificial neural network function in order to study the detailed concept of coupling between field to transmission lines and the other method is the modelling of simulation system in which the coupling system approximations are taken. This paper also describes about the calculation of outage rate and its Geometrical analysis.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Surge Voltages on the Overhead Lines due to Direct and Indirect Lightning Impulse

Lalith¹,

Sridhar²,

Gatla³

et al. 2021

JESA

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“…Though the shield wires are grounded at all towers, the over-voltage on the insulator string of the line still occurs when the lightning strikes directly to the shield wires [3,5] and hence, it can cause unscheduled supply interruption. Many publications introduced the calculation method of the lightning tripping rate (LTR) for the transmission line [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Reduction of the number of faults caused by lightning for transmission line

Phan

2019

IJECE

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In this paper, author proposed an algorithm to determine method which is used to reduce the fault number caused by lightning on a transmission line. The algorithm is developed based on three methods including increase in the insulator string length, surge arrester installation, and surge arrester installation in combination with increase in the insulator string length. The output of algorithm is the proposed method which makes the number of faults caused by lightning satisfy the requirement and its investment is the cheapest in them. Based on this algorithm, the reasonable method (the number of tower positions needing to improve) to reduce the number of lightning caused faults of the transmission line can determine if we know the ratio of the required number lightning caused faults to the current value. This algorithm is applied to a transmission line to propose an improving method so that the fault number satisfies the requirement. This algorithm is implemented to a 220kV transmission line. The calculation results show the reasonable method and it also indicates in detail which towers should install surge arrester, which towers should increase the insulator string length.

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Calculation of Lightning Outage Rate of High Voltage Transmission Line

Cited by 2 publications

References 5 publications

Evaluation of Surge Voltages on the Overhead Lines due to Direct and Indirect Lightning Impulse

Evaluation of Surge Voltages on the Overhead Lines due to Direct and Indirect Lightning Impulse

Reduction of the number of faults caused by lightning for transmission line

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