Title :
Return voltage measurements of oil impregnated paper insulated transformers
Author :
Li, M.H. ; Dong, M. ; Qu, Y.M. ; Zhou, M.G. ; Yan, Z.
Author_Institution :
Sch. of Electr. Eng., Xi´´an Jiaotong Univ., China
Abstract :
One of the methods currently being investigated as a possible non-intrusive diagnostic tool for condition monitoring of the oil-paper insulation of power transformer is the return voltage measurement (RVM). Using RVM improves the ability to detect the content of water concentration and the ageing process in the oil-paper insulation system and can thus be an indicator of insulation quality and the ageing condition. This paper describes the development of knowledge rules for the interpretation of RVM towards the ageing condition of oil-paper insulation. On the basis of this experiment as well as on the basis of tests on power transformers, knowledge rules are developed to evaluate the ageing condition.
Keywords :
ageing; condition monitoring; paper; power transformer insulation; power transformer testing; transformer oil; voltage measurement; ageing process; condition monitoring; insulation quality; nonintrusive diagnostic tool; oil impregnated paper insulated transformers; oil-paper insulation; power transformer; return voltage measurements; water concentration; Aging; Loss measurement; Oil insulation; Petroleum; Polarization; Power transformer insulation; Power transformers; Testing; Time measurement; Voltage measurement;
Conference_Titel :
Electrical Insulating Materials, 2005. (ISEIM 2005). Proceedings of 2005 International Symposium on
Conference_Location :
Kitakyushu
Print_ISBN :
4-88686-063-X
DOI :
10.1109/ISEIM.2005.193397
