Title :
Improvement on measurement sensitivity of the optical remote sensing based PD continuous on-line monitoring system for HV cable joints
Author :
Tian, Y. ; Lewin, P.L. ; Wilkinson, J.S. ; Sutton, S.J. ; Swingler, S.G.
Author_Institution :
Sch. of Electron. & Comput. Sci., Southampton Univ., UK
Abstract :
This paper investigates the improvement on measurement sensitivity of the electro-optic modulator based PD continuous online monitoring technique, which has been developed by the authors. The characteristics of the measurement system noise were investigated in both the time and frequency domain. Various broadband amplifiers and filters have been applied. The feasibility of using RF transformers as passive amplifiers to increase the signal to noise ratio was also investigated.
Keywords :
cable jointing; computerised monitoring; electro-optical modulation; partial discharge measurement; power cables; power engineering computing; remote sensing; wideband amplifiers; HV cable joints; PD continuous online monitoring system; RF transformers; broadband amplifiers; broadband filters; electro-optic modulator; frequency domain; measurement sensitivity; optical remote sensing; passive amplifiers; signal to noise ratio; time domain; Broadband amplifiers; Electrooptic modulators; Frequency measurement; Noise measurement; Optical filters; Optical modulation; Optical noise; Optical sensors; Remote monitoring; Time measurement;
Conference_Titel :
Electrical Insulating Materials, 2005. (ISEIM 2005). Proceedings of 2005 International Symposium on
Print_ISBN :
4-88686-063-X
DOI :
10.1109/ISEIM.2005.193510
