Breakdown Voltage Fluctuation and Breakdown Path Dispersion in a Hybrid Gas-Solid Insulation System Under Alternating Voltages

Wang, Yilong; Zheng, Yuesheng; Li, Qiongqiong; Xie, Xinda; He, Tongtong

doi:10.1109/tdei.2021.009805

IEEE Trans. Dielect. Electr. Insul.

2021

DOI: 10.1109/tdei.2021.009805

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Breakdown Voltage Fluctuation and Breakdown Path Dispersion in a Hybrid Gas-Solid Insulation System Under Alternating Voltages

Yilong Wang

Yuesheng Zheng

Qiongqiong Li

et al.

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2024

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Cited by 2 publications

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Improve the insulation performance of air‐insulated gaps: Application of polyurea materials on the ground potential side of transmission line

Li,

Shen,

Zhang

et al. 2024

High Voltage

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The authors aim to explore the effectiveness of two‐component polyurea materials applied to transmission line towers (on the ground potential side) in improving the insulation performance of the conductor–tower gap. The physicochemical and electrical properties of the polyurea materials were first analysed and a conductor–tower gap testing platform was constructed to investigate the effects of the length and thickness of the polyurea layer on the ground potential side under a 50‐Hz AC voltage on the breakdown characteristics. Experimental studies revealed that the characteristic breakdown voltages of polyurea layers of different lengths (40, 100, 200, and 400 cm) are approximate. Compared with the air‐insulated gap before the application of polyurea, thinner polyurea layers (1 and 2 mm) showed no significant improvement in the breakdown voltage, whereas thicker layers (3, 4, and 5 mm) significantly improved it. In particular, with a polyurea layer thickness of 4 mm and gap distance of 20 cm, the characteristic breakdown voltage increased from 138.43 to 155.71 kV. In addition, the withstand voltage distance decreased from 4 to 3 cm without any breakdown, even when the high‐voltage conductor directly contacted the polyurea layer and the layer was not penetrated. The authors provide theoretical support and experimental data for improving the conductor–tower gap insulation performance by applying a polyurea layer on the ground potential side.

show abstract

Improve the insulation performance of air‐insulated gaps: Application of polyurea materials on the ground potential side of transmission line

Li,

Shen,

Zhang

et al. 2024

High Voltage

View full text Add to dashboard Cite

show abstract

AC Breakdown Characteristics of Hybrid Nitrogen-Barrier Insulation Systems at Different Pressures

Wang,

Zheng

2024

IEEE Trans. Dielect. Electr. Insul.

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Breakdown Voltage Fluctuation and Breakdown Path Dispersion in a Hybrid Gas-Solid Insulation System Under Alternating Voltages

Cited by 2 publications

References 21 publications

Improve the insulation performance of air‐insulated gaps: Application of polyurea materials on the ground potential side of transmission line

Improve the insulation performance of air‐insulated gaps: Application of polyurea materials on the ground potential side of transmission line

AC Breakdown Characteristics of Hybrid Nitrogen-Barrier Insulation Systems at Different Pressures

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