PARTIAL DISCHARGE DETECTION DEVICE OF GAS INSULATED SWITCHGEAR

PROBLEM TO BE SOLVED: To provide a partial discharge detection device of a gas insulated switchgear, in which an antenna for partial discharge detection and an absorbent case can be collectively disposed in an aperture of a metal vessel by a simple configuration and an electric field induced in the antenna is reduced.SOLUTION: In a gas insulated switchgear, a conductor 3 as a conduction part is housed in a metal vessel 1, and an aperture 4 provided on a side surface of the metal vessel 1 is closed with a cover plate 6, and a cylindrical absorbent case 11 housing an absorbent 10 is attached to the cover plate 6 inside the aperture 4, and a bottom surface 11a opposite to a surface attached to the cover plate 6, of the absorbent case 11 is disposed opposite the conductor 3. The partial discharge detection device includes a rod-like antenna 7 which is attached to the cover plate 6 inside the aperture 4 and is disposed so as to be inclined along the absorbent case 11 and has a front end part located nearer to the cover plate 6 than to the bottom surface 11a. 【課題】簡素な構成により部分放電検出用のアンテナと吸着剤ケースを金属容器の開口部に一括して配置することが可能であると共に、アンテナに誘起される電界が緩和されたガス絶縁開閉装置の部分放電検出装置を提供すること。【解決手段】金属容器１内に通電部である導体３が収納され、金属容器１の側面に設けられた開口部４が蓋板６で閉塞され、開口部４内における蓋板６には吸着剤１０を収納する円筒形状の吸着剤ケース１１が取り付けられると共に、吸着剤ケース１１の蓋板６への取り付け面と反対側の面である底面１１ａが導体３に対向して配置されたガス絶縁開閉装置に対し、開口部４内で蓋板６に取り付けられ、吸着剤ケース１１に寄り添うように配置されて傾斜すると共に、先端部が底面１１ａよりも蓋板６側に配置されるロッド状のアンテナ７を備えた部分放電検出装置を提供する。【選択図】図１