配電線直撃雷による電子式電力量計の故障様相―電力量計内部を通過する雷電流による電磁障害とその対策―

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: 2017/12/01

タイトル(英語): Failure Aspects of Electronic Watt-hour Meters due to Direct Lightning Strikes to Distribution Lines―Electromagnetic Disturbance Caused by Lightning Current Flowing through Watt-hour Meters and its Countermeasure―

著者名: 石本　和之（（一財）電力中央研究所 電力技術研究所／早稲田大学大学院 先進理工学研究科 電気・情報生命専攻），森　亮太（（一財）電力中央研究所 電力技術研究所），浅川　聡（（一財）電力中央研究所 電力技術研究所），大木　義路（早稲田大学大学院 先進理工学研究科 電気・情報生命専攻）

著者名(英語): Kazuyuki Ishimoto (Electric Power Engineering Research Laboratory, CRIEPI/Department of Electrical Engineering and Bioscience, Waseda University), Ryota Mori (Electric Power Engineering Research Laboratory, CRIEPI), Akira Asakawa (Electric Power Engineering Research Laboratory, CRIEPI), Yoshimichi Ohki (Department of Electrical Engineering and Bioscience, Waseda University)

キーワード: 配電線，スマートメータ，雷害対策，過渡磁界，故障率計算　　distribution lines，smart meter，lightning protection countermeasure，transient magnetic field，failure rate calculation

要約(英語): Recently, advanced “smart meters” have been introduced widely to electric power distribution lines. Since smart meters consist of many low-voltage electronic devices, their vulnerability to disturbances such as lightning surges is a matter of concern. Therefore, to establish an effective lightning protection countermeasure against these disturbances, we have been investigating the lightning failure aspects of electronic watt-hour meters (WHMs), which have a function similar to that of a watt-meter section in smart meters. In this paper, we explored countermeasures for improving the performance of WHMs against the lightning transient magnetic fields. At first, we examined the performance of WHMs by lightning impulse current tests. As a result, it has become clear that the increase in distance between a bus conductor and a processing unit and magnetic shield of a processing unit are effective in reducing the probability of failures caused by the transient magnetic fields. Next, we proposed a calculation method of the lightning failure rate of WHMs based on a lightning surge analysis. The calculation results indicate that the failure occurs more frequently by subsequent strokes than by first strokes or if the grounding resistance of a pole transformer is higher.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.137 No.12 （2017）

本誌掲載ページ: 766-776 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/137/12/137_766/_article/-char/ja/