Designing and constructing transformer test system with aid of Labview

This paper describes the developments, and the practical implementation of on-line real-time testing system for three/single phase distribution transformers. To achieve this goal, a GUI (graphical user interface) program is developed by means of LabVIEW software. This implementation is also suitable for performance evaluation, efficiency testing, real-time on-line condition monitoring and protection of transformers with any type of design, size and characteristics. The new constructed transformer testing system takes into account the transformer parameter variations due to changes in electric supply, temperature, saturation and load. The described system is based on using a fast real-time computer based data acquisition system to measure, record and analyze the necessary parameter determination data such as current, voltage, power, frequency and temperature accurately and dynamically whilst testing the transformer. This system substantially reduces the testing time and saves energy while at the same time achieves higher accuracy compared with conventional transformer´s testing methods.