Advanced distribution Transformer Load Monitoring

Abstract

The Transformer Load Monitoring system (TLM) is a project aimed to reduce cost, increase efficiency and improve services to customers. The project was created by Metropolitan Electricity Authority (MEA) Thailand. The purpose was to build a monitoring system for medium voltage distribution transformers. These transformers have been installed on roadside electric poles around Bangkok. Transformers' data is significant to load management and research about transformers. An advanced distribution transformer load monitoring system is capable of measuring voltage, current and power. It separates transformers into small groups and communicates within the group using and radio frequency module operating at unlicensed 433 MHz band. All collected data are sent to a master unit using a GSM modem saved to a database server.