Title :
Tandem-chamber charge density monitor
Author :
Nelson, J.K. ; Lee, M.J.
Author_Institution :
Dept. of Electr. Power Eng., Rensselaer Polytech. Inst., Troy, NY, USA
fDate :
4/1/1990 12:00:00 AM
Abstract :
A device that is capable of measuring the charge density carried by an insulating fluid is described. The monitor relies on the principle of charge relaxation in two tandem chambers in such a way that the measurement is independent of residence and relaxation times. It is robust, has no moving parts, and is also able to monitor the conductivity of the fluid in applications for monitoring the streaming electrification in power transformers. Performance, accuracy, and applications of the device are outlined
Keywords :
charge measurement; electrical conductivity measurement; insulating oils; transformer insulation; accuracy; applications; charge density monitor; charge relaxation; conductivity monitoring; flow independent measurement; insulating fluid charge density; no moving parts; relaxation time independent measurement; robust monitoring system; streaming electrification monitoring; tandem chamber monitor; two tandem chambers; Charge measurement; Conductivity; Current measurement; Density measurement; Dielectric measurements; Monitoring; Power measurement; Power transformers; Pumps; Robustness;
Journal_Title :
Electrical Insulation, IEEE Transactions on
