直流GIS絶縁スペーサ用エポキシ中における電荷輸送シミュレーション

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2020/10/01

タイトル(英語): Charge Transport Simulation in Epoxy used as DC-GIS Insulating Spacer Material

著者名: 嶋川　肇（東京大学大学院 工学系研究科 電気系工学専攻），佐藤　正寛（東京大学 先端科学技術研究センター），熊田　亜紀子（東京大学大学院 工学系研究科 電気系工学専攻），日髙　邦彦（東京大学大学院 工学系研究科 電気系工学専攻），安岡　孝倫（東芝エネルギーシステムズ（株）），保科　好一（東芝エネルギーシステムズ（株）），椎木　元晴（東芝エネルギーシステムズ（株））

著者名(英語): Hajime Shimakawa (School of Engineering, The University of Tokyo), Masahiro Sato (Research Center for Advanced Science and Technology, The University of Tokyo), Akiko Kumada (School of Engineering, The University of Tokyo), Kunihiko Hidaka (School of Engineering, The University of Tokyo), Takanori Yasuoka (Toshiba Energy Systems & Solutions Corporation), Yoshikazu Hoshina (Toshiba Energy Systems & Solutions Corporation), Motoharu Shiiki (Toshiba Energy Systems & Solutions Corporation)

キーワード: 直流ガス絶縁開閉装置，絶縁スペーサ，エポキシ，電荷輸送モデル，空間電荷，数値シミュレーション　DC-GIS，insulating spacer，epoxy，charge transport model，space charge，numerical simulation

要約(英語): Surface charge accumulation on insulating epoxy spacer in DC-GIS under high DC electric field decreases breakdown voltage on the spacer, but charge accumulation phenomena of insulators are not clear in detail. In this paper, the numerical simulation of electrical conduction in epoxy is conducted to discuss proposed charge transport model. The charge transport model which had developed to explain electrical conduction in polyethylene is modified to simulate the prior profiles of space charge distribution in epoxy. With this model, space charge accumulation is simulated and compared with the experimental results. As a result, the simulated and experimental space charge distributions are consistent under multiple conditions with different electric fields, temperatures and measurement times. In particular, the hetero-charge in the bulk could be reproduced by extraction barrier, and the homo-charge near the electrode could be reproduced by locally increased trap density. It can be explained that changes in space charge density with conditions are determined by the electric field and temperature dependence of charge injection and de-trap rate. From these results, the usefulness of the charge transport model in epoxy is verified.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.140 No.10 （2020）

本誌掲載ページ: 762-768 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/140/10/140_762/_article/-char/ja/