電柱上部の火災を防ぐイノベーション(Innovation promises to prevent power pole-top fires)

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2024-05-01 ロイヤルメルボルン工科大学(RMIT)

RMIT大学のTariq Nazir博士は、パースで40,000軒の家庭やビジネスに影響を与えた電柱火災の問題に取り組んでいます。彼の研究では、湿度や霧の後の熱く乾燥した風の日が、電力線の絶縁体に汚染が蓄積し、火災を引き起こすことが判明しました。ナジール博士はニューサウスウェールズ大学の研究者と協力し、電柱の絶縁材料の性能と安全性を向上させるためのシリコンラバーコンポジット材料を開発しました。この新しい材料は、電力会社が資産を保護し、メンテナンスのコストを削減する可能性があります。

<関連情報>

水酸化アルミニウム、粘土、ガラス繊維の添加剤により、シリコーンゴム複合絶縁体の難燃性と表面放電耐性を高める Enhancing flame and electrical surface discharge resistance in silicone rubber composite insulation through aluminium hydroxide, clay, and glass fibre additives

M. Tariq Nazir,Arslan Khalid,Cheng Wang,Imrana Kabir,Guan H. Yeoh &B. Toan Phung
Advanced Composites and Hybrid Materials  Published:15 March 2024
DOI:https://doi.org/10.1007/s42114-024-00874-x

電柱上部の火災を防ぐイノベーション(Innovation promises to prevent power pole-top fires)

Abstract

Silicone rubber (SR) is a leading polymer used in electrical outdoor insulation applications due to its superior hydrophobic characteristics. However, the low flame and electrical surface discharge resistance of SR limit its broad viability and challenge its integrity in severe outdoor working conditions. This work attempts to explore the flame retardancy and surface discharge characteristics of SR co-filled with aluminium hydroxide (ATH), nanoclay montmorillonite (MMT), and chopped glass fibre (GF). Results indicate that the incorporation of ATH/MMT/GF could assist in improving the fire and surface discharge resistance of the SR material. It is noted that the maximum average rate of heat emission (MARHE) and total smoke production (TSP) are measured at 24.93 kW/m2 and 0.48 m2 in SRE, relative to 61.29 kW/m2 and 6.02 m2 in SRB. Using finite element analysis (FEA), the maximum electric field strength is computed at 4.66 × 106 V/m in the air gap coupled with a high-voltage (HV) plate and sample. SRE exhibits a higher partial discharge inception voltage (PDIV) value of 2.32 kVrms than its counterparts, while the maximum discharge magnitude (Qmax) is computed at 7095 pC, relative to 7746 pC in SRB. SRE emerges as a preferable SR composite to be used in electrical insulation applications with excellent flame and surface discharge resistance characteristics.

0405電気設備
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