Dynamic Interface Charge Behaviors in HVDC Cable Terminal Considering Carrier Dynamic Equilibrium

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2021/10/01

タイトル(英語): Dynamic Interface Charge Behaviors in HVDC Cable Terminal Considering Carrier Dynamic Equilibrium

著者名: Jin Li (School of Electrical and Information Engineering, Tianjin University), Yufan Wang (School of Electrical and Information Engineering, Tianjin University), Pengxian Song (Electric Power Research Institute, State Grid Tianjin Electric Power Company),

著者名(英語): Jin Li (School of Electrical and Information Engineering, Tianjin University), Yufan Wang (School of Electrical and Information Engineering, Tianjin University), Pengxian Song (Electric Power Research Institute, State Grid Tianjin Electric Power Company),

キーワード: HVDC cable terminal，charge transport model，interface charge，electric field distribution，polarization and depolarization，polarity reversal voltage

要約(英語): The cable terminal composed of rubber and epoxy resin is a critical component connecting high voltage direct current (HVDC) cable and gas insulated substations (GIS). The interface is the most vulnerable part of cable terminal insulation because of the interface charge accumulation issues under DC voltage, which causes electric field distortion and even interface discharge or breakdown. In this paper, an interface charge behavior simulation model considering carrier dynamic equilibrium is established, and the interface charge characteristics during polarization and depolarization process under single polarity voltage and polarity reversal voltage are analyzed. The results indicate that the charges mainly accumulate at the solid-gas interface after polarization, which leads to a serious electric field concentration in SF6. The charge accumulation between the different solid dielectrics first increases and then decreases with time during polarization and depolarization process. The electric field intensity in the solid domain is strengthened obviously under the polarity reversal voltage. The accurate interface charge simulation provides an effective reference for DC cable terminal insulation design.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.141 No.10 （2021） 特集：9th International Symposium on Electrical Insulating Materials

本誌掲載ページ: 567-573 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/141/10/141_567/_article/-char/ja/