報告書番号

181055

タイトル（和文）

塩原実験送電線における直流コロナ損（第８報）－ＡＣＳＲ３３０平方ｍｍ２導体の２回線送電線－

タイトル（英文）

CORONA LOSS OF DC TRANSMISSION LINE AT SHIOBARA LABORATORY (8) -DOUBLE CIRCUIT LINES OF ACSR 330 SQUARE MM TWO CONDUCTOR BUNDLES

概要 （図表や脚注は「報告書全文」に掲載しております）

直流架空送電線のコロナ損特性を明らかにするため，当所ＵＨＶ塩原実験場の１回線装柱による実験を実施してきた。しかし，我が国のＵＨＶ級直流送電線は，その用地確保の面から多回線装柱が予想される。そこで，上記のの実験送電線を２回線装柱（ＡＣＳＲ３３０平方ｍｍ２導体）に変更した。（１）晴曇天時のコロナ損は，夏季の高温多湿時に増加し，冬季の低温乾燥時に減少する傾向を示す。（２）雨天時（降雨強度が２～４ｍｍ／ｈ）のコロナ損は，晴曇天時の年平均コロナ損の４～５倍である。（３）コロナ損を単極充電を基準にして比較すると，水平１回線の場合は１．２～１．４倍，また，垂直１回線ならびに２回線（順極，逆極）の場合は２～２．４倍となる。

概要 （英文）

IN ORDER MAKE CLEAR CHARACTERISTICS OF CORONA LOSS FROM DC OVERHEAD TRANSMISSION LINES,THE LONG TERM TEST HAS BEEN DONE AT THE SHIOBARA DC TEST LINE IN CRIEPI. THE TEST STARTED AT FIST WITH THE SINGLE CIRCUIT LINE.THEN,THE SHIOBARA TEST LINE WAS CHANGED INTO THE DOUBLE CIRCUIT OF ACSR 330 SQUARE MM TWO BUNDLE CONDUCTORS IN NOVEMBER,1980. IT IS EXPECTED THAT UHV DC TRANSMISSION LINE WILL BE DESIGNED WITH MULTI CIRCUITS IN JAPAN, BECAUSE OF THE DIFFICULTY TO SECURE THE WIDE RIGHT OF WAY. THIS PAPER IS GOING TO PRESENT THE RESULTS OF LONGTERM TEST ON CORONA LOSS FROM THE DOUBLE CIRCUIT DC TEST LINE. THE MAIN CONCLUSIONS CAN BE SUMMARIZED AS FOLLOWS: (1)IN THE FINE WEATHER,THE CORONA LOSS SHOWS THE TENDENCY TO DECREASE IN WINTER,WHILE IT INCREASESIN SUMMER. (2)IN THE RAINY WEATHER (FROM 2 TO 4MM/H),THE AMOUNT OF CORONA LOSS BECOMES APPROXIMATELY FOUR TO FIVE TIMES LARGER THAN AVERAGE CORONA LOSS IN THE FINE WEATHER. (3)THE CORONA LOSS FROM THE HORIZONTAL SINGLE CIRCUIT IS FROM 1.2 TO 1.4TIMES LAGER THAN THAT FROM MONOPOLAR LINE.THE CORRONA LOSS FROM THE VERTICAL SINGLE CIRCUIT AND FROM THE DOULBLE CIRCUITS IS FROM 2 TO 2.4TIMES LARGER THAN THAT FROM MONOPLAR LINE.

報告者

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