Two-wavelength quadrature multipoint detection of partial discharge in power transformers using fiber Fabry-Perot acoustic sensors

2012 ◽  
Author(s):  
Bo Dong ◽  
Ming Han ◽  
Anbo Wang
Keyword(s):  
Partial Discharge ◽  
Power Transformers ◽  
Acoustic Sensors ◽  
Fabry Perot

scholarly journals Impact of Power Transformer Oil-Temperature on the Measurement Uncertainty of All-Acoustic Non-Iterative Partial Discharge Location

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1385
Author(s):  
Vladimir Polužanski ◽  
Nenad Kartalović ◽  
Boško Nikolić
Keyword(s):  
Measurement Uncertainty ◽  
Power Transformer ◽  
Partial Discharge ◽  
Transformer Oil ◽  
Power Transformers ◽  
Acoustic Sensors ◽  
Temperature Variations ◽  
Discharge Location ◽  
The Mean ◽  
And Control

In this paper, the influence of the variation in transformer oil temperature on the accuracy of the all-acoustic non-iterative method for partial discharge location in a power transformer is researched. The research can improve power transformers’ testing and monitoring, particularly given the large transformer oil temperature variations during real-time monitoring. The research is based on quantifying the contribution of oil temperature to the standard combined measurement uncertainty of the non-iterative algorithm by using analytical, statistical, and Monte Carlo methods. The contribution can be quantified and controlled. The contribution varied significantly with different mutual placements of partial discharge and acoustic sensors. The correlation between the contribution and the mean distance between partial discharge and acoustic sensors was observed. Based on these findings, the procedure to quantify and control the contribution in practice was proposed. The procedure considers the specificity of the method’s mathematical model (the assumption that the oil temperature is constant), the non-iterative algorithm’s nonlinearity, and the large variations in transformer oil temperature. Existing studies did not consider the significant effect of the oil temperature on the combined measurement uncertainty of partial discharge location influenced by those phenomena. The research is limited to partial discharge located in the transformer oil.

A New Application of Rogowski Coil Sensor for Partial Discharge Localization in Power Transformers

2021 ◽  
pp. 1-1
Author(s):  
Sajjad Sharifinia ◽  
Mehdi Allahbakhshi ◽  
Teymoor Ghanbari ◽  
Asghar Akbari ◽  
Hassan Reza Mirzaei
Keyword(s):  
Partial Discharge ◽  
Rogowski Coil ◽  
Power Transformers

scholarly journals Partial Discharge Monitoring in Power Transformers Using Low-Cost Piezoelectric Sensors

Sensors ◽  
2016 ◽  
Vol 16 (8) ◽  
pp. 1266 ◽  
Author(s):  
Bruno Castro ◽  
Guilherme Clerice ◽  
Caio Ramos ◽  
André Andreoli ◽  
Fabricio Baptista ◽  
...  
Keyword(s):  
Low Cost ◽  
Partial Discharge ◽  
Piezoelectric Sensors ◽  
Power Transformers ◽  
Discharge Monitoring

scholarly journals Design parameter based method of partial discharge detection and location in power transformers

2009 ◽  
Vol 6 (2) ◽  
pp. 253-265 ◽  
Author(s):  
Santosh Kumar ◽  
Prakash Gupta ◽  
Athikkan Venkatasami ◽  
Kodhandaraman Udayakumar
Keyword(s):  
Design Parameter ◽  
Partial Discharge ◽  
Power Transformers ◽  
Discharge Detection
Sign in / Sign up

Export Citation Format

Share Document