ガス絶縁開閉装置の状態診断手法の検討 : 分解ガスの蓄積による部分放電の高感度な検出法 [in Japanese] Study of State Diagnosis Method of Gas-insulated Switchgear : High Sensitivity Detection Method of Partial Discharge by Decomposition Gas Accumulation [in Japanese]
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The maintenance rationalization to the equipment under operation and the lifetime protraction based on appropriate diagnosis result are necessary for the reduction in cost of gas insulated equipment. Therefore, the accurate state observation method for inside of equipment is requested. In this research, the new state observation method which enabled the high sensitivity detection of decomposition gas by setting up the absorbent outside of the equipment was proposed. As the result, it was shown without ruining the reliability of the equipment by the absorbent unit setting up outside of the gas insulation equipment that the high sensitivity detection of decomposition gas is possible. Because the concentration of decomposition gas shows a remarkable correlation between total electric charge of partial discharge and the lifetime is different depending on the kind of the decomposition gas, the possibility that the detailed state of the equipment can be diagnosed was shown according to the detected gaseous species and its amount. Moreover, we succeeded in the detection of the decomposition gas from the absorbent, therefore the availability of this method was shown.
- IEEJ Transactions on Power and Energy
IEEJ Transactions on Power and Energy 127(1), 231-240, 2007-01-01
The Institute of Electrical Engineers of Japan