Flexible Alternating Current Transmission System (FACTS) Research Lab

Flexible Alternating Current Transmission System (FACTS) Research Lab

  • Introduction

State-of-the-art developments associated with power equipment are dictating new ways in which system equipment monitoring may be achieved not only in high voltage transmission systems but also in low voltage distribution systems. The FACTS Lab focuses on fundamental and applied researches about monitoring of devices such as power transformers and also, smart microgrids.

One of the latest research directions of this lab is:

Detection and localization of transformer defects and simultaneous online detection and localization of mechanical defects and partial discharge in power transformers using electromagnetic waves

Online and on time detection of defects leads to technical and economic merits for networks. Recently, an online method has been introduced for radial deformation detection of transformers high-voltage (HV) winding using electromagnetic waves (EMWs), called ultra wideband (UWB) synthetic aperture radar (SAR) imaging method. The basis of this method is comparison of sound and deformed images of transformer windings to detect radial deformation. Partial discharge (PD), as another defect in the transformers, emits ultra-high-frequency (UHF) signals that contain 0.3 to 3 GHz frequencies. PD detection and localization by using UHF antennas has been tested on transformers. Combination of these EMW-based methods can lead to simultaneous detection and localization of both defects. However, the interaction of these methods should be studied more.