高圧需要家受電点の第5調波電流による電圧ひずみ抑制効果

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: 2013/01/01

タイトル(英語): The Suppressing Effect of Voltage Distortion by the Fifth Harmonic Current at the Supply Point for Customers with a Middle Voltage Power Supply

著者名: 雪平　謙二（電力中央研究所），岡田　有功（電力中央研究所）

著者名(英語): Kenji Yukihira (Central Research Institute of Electric Power Industry), Naotaka Okada (Central Research Institute of Electric Power Industry)

キーワード: 高調波，限度値，需要家，三相機器，位相角　　harmonics，limit value，customer，three-phase equipment，phase angle

要約(英語): In Japan, limit values on the harmonic current emitted by customers with 6.6 kV and higher power supplies were specified in 1994. Because the limit values are applied to large pieces of equipment (those drawing currents of more than 20A), they generally apply to three-phase equipment. Most three-phase transformers have a star-delta connection. Many home appliances are considered to be equivalent to three-phase equipment with a delta-delta connection transformer, because single-phase equipment is connected phase-to-phase. This means that the harmonic currents created by three-phase equipment and single-phase equipment can cancel each other out.The authors reached the following conclusions by analyzing harmonic voltage and current data measured at the supply points for customers with a 6.6kV power supply. (1) The 5th harmonic voltage in the electric power-supply system in Japan is produced mainly by single-phase equipment. (2) The limit values for customers with a middle- or high-voltage power supply are unnecessary, because the 5th harmonic current generated by three-phase equipment reduces the 5th harmonic voltage. (3) Connecting a reactor in series with the capacitors to improve the power factor is a necessary and sufficient method for suppressing the 5th harmonic voltage.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.133 No.1 （2013） 特集：平成24 年電力・エネルギー部門大会

本誌掲載ページ: 2023/02/09 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/133/1/133_2/_article/-char/ja/