• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of Automatic Diagnosis System for Electircal Insulating Deteriolation in Power Cable using Image Measurement

Research Project

Project/Area Number 06650344
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 電力工学・電気機器工学
Research InstitutionAkita National College of Technology

Principal Investigator

YANAGIWARA Masateru  Akita National College of Technology, Dep. of Electrical Engineering, Associate Professor, 電気工学科, 助教授 (20042294)

Co-Investigator(Kenkyū-buntansha) 吉村 卓  秋田工業高等専門学校, 一般科目理科, 教授 (10042277)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1994: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsSpherulite / Treeing / Water tree / Image measurement / Polypropylene / Polyethylene / Lamella / 高分子絶縁材料 / 結晶化度 / 結晶構造 / 非晶質
Research Abstract

Crystalline polymers such as polyethylene and polypropylene have been widely used in power cable and power condenser because of their high electrical strength and low dielectric loss. The spherulites would be formed on the process of these polymeric materials cooling in manufacturing. It is known that electrical insulation performance of the polymeric material is influenced by spherulites. However, the influence of spherulites, spherulite distribution on tree initiation is not entirely distinct so far.
In this paper, automatic diagnosis system for electircal insulating deteriolation in power cable using image measurement is discussed. And the purpose of this study is to find the relation between electrical trees, water trees and spherulites in polyethylene and polypropylene. The main objective of my present research project for a period of two years from 1994 to 1995 is to study above mentioned points. The results obtained in the research project are summarized as follows.
(1) When the needle tip was located near the nucleus of a spherulite, a few trees were seen to advance radially between lamellas.
In contrast, when the tip was located away from the nucleus, only one tree was seen to advance along the lamellas.
Trees created outside spherulites were treelike.
When the tip oh the needle electrode was located outside the spherulites, the spread of advanced-stage treelike trees was observed.
(2) Water trees don't develop inside spherulites.
Water trees don't develop in specimen with a high density of spherulites.
Water trees advance in the noncrystalline region and when they collide with spherulites, they advance around the spherulite interface.
When the tip of the water electrode is located within a spherulite, water trees develop from the middle of the water electrode in a region located outside spherulites.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Masateru YANAGIWARA: "Effect of Spherulite on Water-Tree in Polypropylene" Proceedings of the 4th International Conference on Properties and Applications of Dielectric Materials. 436-439 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Fan Zong HUAI: "The Research on Microstructure of Water Trees in Polyethylene" Proceedings of the 4th International Conference on Properties and Applications of Dielectric Materials. 440-443 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 柳原昌輝: "高分子絶縁材料中における水トリ-の画像計測" 電気学会放電および誘電・絶縁材料合同研究会. 41-47 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 柳原昌輝: "ポリエチレンにおける球晶と水トリ-の関係" 電気学会放電および誘電・絶縁材料合同研究会. 1-8 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 柳原昌輝: "球晶中におけるトリ-イング進展のシミュレーション" 秋田工業高等専門学校 研究紀要. 31. 54-59 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Masateru, YANAGIWARA: "Effect of Spherulite on Water-Tree in polypropylene" Proceedings of the 4th International Conference on Properties and Applications of Dielectric Mat erials, Australia. 436-439 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Fan Zong, HUAI: "The Influence of Crystalline Morphology on the Growth of Water Trees in Polyethylene" Second International Conference on Materials Engineering for Resources, Japan. 13-14 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Masateru, YANAGIWARA: "Image Measurement of Water-tree in Insulating Materials" The Research of Electric Discharge, Dielectric and Insulating Materials, IEE of Japan. 41-47 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Masateru, YANAGIWARA: "Relation between Spherulites and Water Trees in Polyethylene" The Research of Electric Discharge, Dielectric and Insulating Materials, IEE of Japan. 1-8 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Xu JIANFEI: "Influence of Spherulite Distribution and Annealing on Tree Initiation" The Research of Electric Discharge, Dielectric and Insulating Materials, IEE of Japan. 75-84 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Fan Zong, HUAI: "Relation between Spherulites and Water Trees in Polypropylene" 1995 International Symposium on Electrical Insulating Materials, Japan. 435-438 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Masateru, YANAGIWARA: "Simulation of Treeing Growth in Spherulites" Research Report of Akita National College of Technology. Vol.31. 54-59 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 徐建飛: "トリ-発生に関する球晶分布及びアニール処理の影響" 電気学会放電および誘電・絶縁材料合同研究会資料. 75-84 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 柳原昌輝: "ポリエチレンにおける球晶と水トリ-の関係" 電気学会放電および誘電・絶縁材料合同研究会資料. 1-8 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] F.Z.Huai: "Relation between Spherulites and Water Trees in Polypropylene" 1995 International Symposium on Electrical Insulating Materials. 435-438 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 徐建飛: "トリ-発生に及ぼすポリプロピレン中の球晶、球晶分布及びアニール処理の影響" 電気学会論文誌. (発表予定). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 柳原昌輝: "球晶中におけるトリ-イング進展のシミュレーション" 秋田工業高等専門学校研究紀要. (発表予定). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Yanagiwara: "Effect of Spherulite on Water Tree in Polypopylene" Proceedings of the 4th International Conference on Properties and Applications of Dielectric Materials. 436-439 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] F.Z.Huai: "The Research on Microstructure of Water Trees in Polyethylene" Proceedings of the 4th International Conference on Properties and Applications of Dielectric Materials. 440-443 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] F.Z.Huai: "The Influence of Crystalline Morphology on the Growth of Water Trees in Polyethylene" Second International Conference on Materials Engineerring for Resources. 13-14 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 柳原昌輝: "高分子絶縁材料中における水トリ-の画像計測" 電気学会放電および誘電・絶縁材料合同研究会. 41-47 (1994)

    • Related Report
      1994 Annual Research Report

URL: 

Published: 1994-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi