Monitoring System for Power Transformer Windings Hot Spot Temperature Using Fiber Optic Sensors, Kalman Filter and Integration in SCADA System
Marcel Nicola, Claudiu-Ionel Nicola, Dumitru Sacerdoțianu, Iulian Hurezeanu, Marian Duță · American Journal of Signal Processing · 2018
This article presents the implementation based on LabVIEW of a monitoring system using fiber optic sensors for the measurement of hot spot temperature of the transformer windings, which employs a Kalman filter to reduce the measurement noise, and is integrated into a SCADA (Supervisory Control and Data Acquisition) system. The system shows the online evolution of temperatures, automatically creates and prints reports, stores the acquired data as TDMS (Technical data Management Streaming) type files and in a MySQL Server type database. For the connection between the monitoring system and the SCADA a new OPC UA (OLE Object linking and embedding for Process Control Unified Architecture) is used, which simplifies the function collaboration and enterprise deployment. The developed monitoring system implements a unit to access and transmit real time data over the Intranet or Internet, using JSON (JavaScript Object Notation) for the communication between the integrated Web Server and the Web Browser, provides warning reports and sends an e-mail to default addresses. The monitoring of the acquired data, the system operation and SCADA integration of the system presented have been tested using both synthesized virtual signals and real signals. The presented system could be used for monitoring and SCADA integration of the power transformer windings hot spot temperature in the electric power transmission network.