A New Approach for Assessing the Moisture Content in SF6-Insulated Equipment

被引：0
|
作者：
Lessard, M-C. [1 ]
Larocque, G. [1 ]
Gendron, S. [1 ]
Laberge, S. [2 ]
Lavoie, Y. [2 ]
机构：
[1] Hydro Quebec, Inst Rech Hydro Quebec, IREQ, Varennes, PQ, Canada
[2] Hydro Quebec, TransEnergie, Montreal, PQ, Canada
来源：
2016 IEEE ELECTRICAL INSULATION CONFERENCE (EIC) | 2016年
关键词：
SF6-insulated equipment; moisture content; relative humidity; dew point; dielectric strength;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The moisture assessment of SF6-insulated equipment was never a real concern at Hydro-Quebec. In fact, the molecular sieve installed in the equipment was expected to provide an absolute guarantee of the appropriate moisture level. Since then, major failures caused by high moisture content have changed Hydro-Quebec's approach regarding moisture and revealed the importance of its assessment in such equipment. However, from a practical standpoint, there have been problems in accurately assessing the moisture content and then being able to meet the acceptance criteria specified by the manufacturers or by the standards. To prevent new failures associated with high moisture content in SF6-insulated equipment, Hydro-Quebec has developed a new approach based on relative humidity measurement. The present paper explains this technical approach, which is supported by outdoor field experiments.
引用
收藏
页码：539 / 542
页数：4
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