As one step toward the future smart grid, condition monitoring is important to facilitate the
reliability of grid asset operation and to save on maintenance cost [1]. Most failures of the …

Power transformers play a vital role in power transmission systems from the energy source
to the consumption center. In situ diagnostics of the performance of power transformers …

The detection of partial discharge (PD) activities in high-voltage equipment can be
conducted according to several mechanisms of signal detection, including electromagnetic …

Fiber-optic sensing technology is best adapted to health monitoring and evaluation of power
grids because of its immunity of electromagnetic interference, capabilities of multiplexing …

When operating an equipment or a power system at the high voltage, problems associated
with partial discharge (PD) can be tracked down to electromagnetic emission, acoustic …

Pressure sensors based on fiber-optic extrinsic Fabry-Perot interferometer (EFPI) have been
extensively applied in various industrial and biomedical fields. In this paper, some key …

In this Letter, we report on a fiber-optic Fabry–Perot interferometric pressure sensor with its
external diaphragm surface thinned and roughened by a femtosecond laser. The laser …

A diaphragm-based interferometric fiber optic sensor that uses a low-coherence light source
was designed and tested for on-line detection of the acoustic waves generated by partial …

The condition of the internal cellulosic paper and oil insulation are of concern for the
performance of power transformers. Over the years, a number of methods have been …

We propose a Michelson ultrasonic sensing system for detecting the acoustic emission
generated by the partial discharge in power transformer. In order to guide the sensor head …