Transient Analysis for Propagation of Lightning Impulse Creeping Discharge on Low Surface Resistivity Films

カテゴリ: 部門大会

論文No: 50

グループ名: 【B】令和2年電気学会電力・エネルギー部門大会

発行日: 2020/08/28

タイトル(英語): Transient Analysis for Propagation of Lightning Impulse Creeping Discharge on Low Surface Resistivity Films

著者名: 荒岡信隆（福岡大学），高村紀充（福岡大学），水﨑雅之（九州電力），坂井克成（福岡大学），佐々木佑樹（福岡大学），龍輝優（熊本大学），松田樹也（熊本大学），浪平隆男（熊本大学），花井正広（福岡大学）

著者名(英語): Nobutaka Araoka (Fukuoka University), Norimitsu Takamura (Fukuoka University), Masayuki Mizusaki (Kyushu Electric Power Company), Katsushige Sakai (Fukuoka University), Yuki Sasaki (Fukuoka University), Terumasa Ryu (Kumamoto University), Mikiya Matsuda (Kumamoto University), Takao Namihira (Kumamoto University), Masahiro Hanai (Fukuoka University)

キーワード: 雷インパルス沿面放電|表面抵抗率|ATP-EMTP|分布定数回路|過渡解析|lightning impulse creeping discharge|surface resistivity|ATP-EMTP|distribution constant circuit|transient analysis

要約(英語): The phenomena that a discharge penetrates an insulator are industrially important. For protection of a wind power generator against lightning damages, blades have a metal part called a receptor in the blade tip. However, if a lightning strikes except the receptor, lightning may break blades, and power generation opportunities will be lost. In this paper, a relationship between a penetration probability and a surface resistivity was discussed from discharge test results using the uncoated film and the low surface resistivity film only coated on the ground electrode side, and a transient analysis based on a distributed constant circuit. As a result, the penetration probability of the uncoated polyethylene terephthalate film was 100% and that of the transparent low surface resistivity polyethylene terephthalate film was 0%. Furthermore, in the case of the low surface resistivity film, the shared voltage of a surface resistance on the ground electrode side of the film became pulse-like waveform, and was smaller than that in the case of the uncoated film. From the results, we confirmed that a penetration probability might decrease by reducing time constant of potential propagation on the film.

PDFファイルサイズ: 709 Kバイト