Lightning back flashover tripping patterns on a 275/132 kV quadruple circuit transmission line in Malaysia

Halim, Syahirah Abd; Bakar, Ab Halim Abu; Illias, Hazlee Azil; Hassan, Nor Hidayah Nor; Mokhlis, Hazlie; Terzija, Vladimir

doi:10.1049/iet-smt.2015.0199

Cited by 19 publications

(8 citation statements)

References 14 publications

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“…The nature of the voltage stresses that a transmission line system had experience power frequency, lightning, and switching overvoltages [17,[25][26][27][28][29][30][31]. Both transient an power frequency overvoltages stresses appear in all shapes and with different amplitude Each type of transient and power frequency overvoltages may occur during most types o meteorological conditions, leading to the flashover strength differently [32].…”

Section: Voltage Uprating For the Typical Tower Of 132 Kv Transmission Line Processes And Itsmentioning

confidence: 99%

“…The nature of the voltage stresses that a transmission line system had experienced power frequency, lightning, and switching overvoltages [17,[25][26][27][28][29][30][31]. Both transient and power frequency overvoltages stresses appear in all shapes and with different amplitudes.…”

Section: Voltage Uprating For the Typical Tower Of 132 Kv Transmission Line Processes And Its Analysesmentioning

confidence: 99%

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Systematic Approaches and Analyses on Voltage Uprating of 132 kV Transmission Lines: A Case Study in Malaysia

et al. 2021

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With the ageing infrastructure and fast-growing demand faced by utilities worldwide, voltage uprating is one of the most effective solutions and strategic approaches in asset management decisions. In this study, a systematic voltage uprating method is used to propose the new voltage level, based on the existing transmission lines’ physical structure, by utilising appropriate techniques. Prior to work conducted, the existing 132 kV transmission line was first examined in terms of the clearances and the components attached, and a technical issue on the clearance under still air was found to be a significant concern, particularly on phase-to-earth arrangements. Next, the proposed techniques and processes, by increasing the insulation strength and improving air conductor clearances, were used for the individual existing 132 kV transmission tower. The proposed voltage uprating of the 132 kV transmission tower comprehensively examines phase-to-earth under normal and extreme wind conditions based on electrical clearance requirements for 275 kV transmission lines. The proposed uprating model was then simulated using the Finite Element Method (FEM)-based commercial software under several lightning conditions, i.e., various basic lightning insulation levels (BIL) and different flashover mechanisms, taking into consideration still air and wind conditions for the voltage profile and its insulation strength analyses. The study found that the voltage profile condition for the proposed voltage uprating model was able to withstand its BIL under all conditions and thus satisfied the electrical requirement needed.

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Section: Voltage Uprating For the Typical Tower Of 132 Kv Transmission Line Processes And Itsmentioning

confidence: 99%

Section: Voltage Uprating For the Typical Tower Of 132 Kv Transmission Line Processes And Its Analysesmentioning

confidence: 99%

Systematic Approaches and Analyses on Voltage Uprating of 132 kV Transmission Lines: A Case Study in Malaysia

et al. 2021

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“…The nature of the voltage stresses that a transmission line system had experienced power frequency, lightning, and switching overvoltages [67][68][69][70][71][72][73][74]. Both transient and power frequency voltage stresses appear in all shapes and with different amplitudes.…”

Section: Electrical Clearances Requirementmentioning

confidence: 99%

Issues and Challenges in Voltage Uprating for Sustainable Power Operation: A Case Study of a 132 kV Transmission Line System in Malaysia

et al. 2021

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Ageing grid infrastructure is a critical issue that is currently faced by electrical utilities worldwide, resulting in crucial decisions that must be made for the replacement, repair, or refurbishment of assets under constrained budgetary conditions, as well as other factors. As one of the fastest-developing countries globally, Malaysia is steadily growing in terms of its cumulative population, large industries, and advanced transportation sector, leading to an increasing electricity demand and, consequently, putting stress on electric utility providers to meet these tremendous demands. Significant concerns in the new development of transmission in Malaysia are the environmental issues, which involve exploration in gazetted areas and forest reserves. This paper describes the issues and challenges in developing a new transmission line system in Malaysia. In recent years, uprating existing transmission line systems has been one of the best asset management decisions for electric utility operators in order to meet such a demand for capacity. This paper assesses the technical issues and conventional methods of uprating the voltage of an existing transmission line system. The initial study found that the phase-to-Earth clearance does not fulfil the electrical clearance envelope. The study on the existing 132 kV transmission line system further analysed these issues and proposed an appropriate technique for uprating to a 275 kV transmission line system. Finally, the results indicate that the voltage uprating of the 132 kV transmission line system to 275 kV is able to satisfy the electrical clearance requirement envelope.

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“…Multiconductor transmission lines (MTLs) are widely used in electrical and electronic engineering as the significant transmission path of energy and information [1][2][3][4], but they are vulnerable to external electromagnetic (EM) interferences [5], i.e. emissions from lighting EM pulse [6][7][8], high-power radars, high-altitude EM pulse (HEMP) etc. HEMP is a complex multi-pulse, and its earlytime (E1) component is characterised by large radiation scope, intense field strength, and wide-frequency spectrum [9].…”

Section: Introductionmentioning

confidence: 99%

Research and application of the FETD method for the EM transient response of MTLs excited by HEMP

Gong

Hao

Jiang

et al. 2019

IET Science, Measurement & Technology

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Lightning back flashover tripping patterns on a 275/132 kV quadruple circuit transmission line in Malaysia

Cited by 19 publications

References 14 publications

Systematic Approaches and Analyses on Voltage Uprating of 132 kV Transmission Lines: A Case Study in Malaysia

Systematic Approaches and Analyses on Voltage Uprating of 132 kV Transmission Lines: A Case Study in Malaysia

Issues and Challenges in Voltage Uprating for Sustainable Power Operation: A Case Study of a 132 kV Transmission Line System in Malaysia

Research and application of the FETD method for the EM transient response of MTLs excited by HEMP

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