Design and Monitoring of 1kva Distribution Transformer

Abstract

Transformers are vital part of transmission and distribution system. Generally, the lifetime of the transformer varies from 40 to 50 years. Regular monitoring and maintenance must be done to increase its lifetime. The existing monitoring system can acquire, process, analyse and communicate the critical parameters viz. voltage, current, frequency, temperature, oil level, etc. and sends the values to a central hub and indicates the fault to the concerned person. These parameters are required by the operators to ensure reliable power delivery and to assist the day-to-day decision-making activities. A single phase, 1 KVA, 50 Hz, 230/115 V, oil-immersed distribution transformer is designed, and the above-mentioned parameters are monitored and displayed in mobile phones/personal computers. The values from the monitoring system is displayed in website or mobile application using cloud services. With the data available, various processes can be performed to obtain information. The proposed system can be installed in any available transformers with little modification in sensors. When a severe fault occurs secondary circuit-breaker is tripped thereby isolating the transformer and an official is alerted using a text message.