Reliable assessment of oil-paper insulation used in power transformer using concise dielectric response measurement

D Mishra, A Baral, S Chakravorti - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Oil-impregnated paper is usually the preferred choice of insulation in power transformers.
The working life of any transformer depends on its insulation condition. The paper …

Reliable sensing of insulation sensitive performance parameters using time domain-based measurement at different temperatures

D Mishra, S Parveen, A Baral… - IEEE Sensors …, 2023 - ieeexplore.ieee.org
The amount of moisture and conductivity are the two crucial parameters that signify the
condition of oil–paper insulation (OPI). The reliable sensing of moisture and conductivity of …

Importance of depolarization current in the diagnosis of oil-paper insulation of power transformer

A Kumar, D Mishra, A Baral - IEEE Access, 2023 - ieeexplore.ieee.org
Recently, Polarization Depolarization current (PDC) measurement is widely accepted time
domain spectroscopy-based method for assessing the insulation condition. Various …

Sensing Moisture Content in Power Cables from Short Duration Polarization Current Measurements

A Jamshed, N Haque - IEEE Sensors Journal, 2024 - ieeexplore.ieee.org
Estimation of moisture content is vital for the insulation assessment of power cables. A high
value of moisture content signifies the presence of water trees in the cable, posing a risk to …

Investigation related to performance parameter estimation of power transformer insulation using interfacial charge

D Mishra, R Verma, A Baral… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
In the present paper, geometric capacitance is used as a normalization factor instead of DC
insulation resistance. The results suggest geometric capacitance is more efficient in …

A method for estimating the healthy operation state of 110kV power grid transformers based on key characteristic quantities

X Wang - … Conference on Testing Technology and Automation …, 2022 - spiedigitallibrary.org
In order to ensure the safe and reliable operation of the transformer, a method for estimating
the healthy operation state of the 110kV power grid transformer based on key characteristic …