Canonical Correlation Between Partial Discharges and Gas Formation in Transformer Oil Paper Insulation

Canonical Correlation Between Partial Discharges and Gas Formation in Transformer Oil Paper Insulation

Dissolved gas analysis (DGA) has been widely applied to diagnose internal faults in transformer insulation systems. However, the accuracy of DGA technique is limited because of the lack of positive correlation of the fault-identifying gases with faults found in power transformers. This paper presents a laboratory study on the correlation between oil dissolved gas formation and partial discharge...

Acoustic Detection of Partial Discharges in Insulation Oil

In this paper, we performed an insulation diagnosis technique for oil-immersed power transformers by an acoustic detection method. Electrode system such as needle to plane electrode was fabricated to simulate a defect of power transformers. In addition, the frequency spectrum of acoustic signals with partial discharge (PD) in insulating oil was analyzed. From the FFT result, the frequency spect...

Partial Discharge Signatures of Defects in Insulation Systems Consisting of Oil and Oil-impregnated Paper

Measurement and Analysis of Acoustic Signal Generated by Partial Discharges in Insulation Oil

This paper described the measurement of acoustic signal generated by partial discharge in insulation oil and analysis of their frequency spectrum to acquire information for diagnosing oil insulated transformers. We designed a decoupler and a low-noise amplifier to detect acoustic signals with high sensitivity. Also, three types of electrode system; the needle-plane, the plane-plane, the wire-wi...

simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...