摘要
运行经验表明,为了改善500kV变压器的可靠性有必要提高工频耐受电压值、加长局部放电试验时间、降低局部放电量,将过励磁能力列入标准。另外,对变压器的用油要作专门的规定。
For the purpose of improvement of the reliability of 500kV transformers, the service experiences show that it is necessary to increase the value of power fregnency withstand voltage and the time cyele of partial discharge test,to decrease the quantity of partial discharge and standardize the ovcrexcitation capability. The special requirements of insulating oil of 500kV transformers should be stipulated.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
1989年第2期28-33,共6页
High Voltage Engineering
