摘要
一般认为气体密度继电器可以正确反映气体绝缘电气设备的气体密度 ,而压力继电器则不能。本文指出 ,当电气设备内气体平均温度高于密度继电器温度一定程度时 ,气体密度继电器也不能正确反映电气设备内的气体密度 ,而出现正误差。给出的算例说明 ,当温度差达 2 0～ 40℃时 ,误差可达 5 %～ 10 % ,这对实际工作是不利的。
It is recognized that the gas density relay can reflex the gas density in gas insulated electric equipment correctly and the pressure relay can't do the same. This article indicates that when the average temperature of gas in gas insulated electric equipment is some greater than the temperature of gas density relay then the gas density relay can't reflex the gas density correctly too and gives a positive error. An example in this article shows the error reaches about +5% and +10% in case of the temperature difference at 20℃ and 40℃ respectively.
出处
《高压电器》
CAS
CSCD
北大核心
2001年第3期24-25,共2页
High Voltage Apparatus
