MBSPS and FRSNS Systems Result Comparative to Monitoring Step-Down Power Transformer in 33/11 KV Distribution Substation

Abstract

    In electrical power system transformers consider the most important and expensive equipment. Monitoring and controlling these devices in a reliable manner is essential.in this paper two systems were designed to monitoring the parameters of step-down power transformer based on ZIGBEE technology theses parameters are: current, voltage, temperature and oil level. One of these systems work with the help of microcontroller (Arduino mega) is microcontroller-based sensor pooling system (MBSPS) and the other depends on XBEE alone is free running sensor node system (FRSNS) then integrated the work with SUPERVISORY CONTROL AND DATA AQUISETION (SCADA) system by reaching the parameters by XBEE to the remote terminal unit (RTU) using one of the most popular SCADA protocol (MODBUS). The results obtained unevenly depending on the function of each system.the time consumed for processing one packet in free running is triple than in pooling and required double time to receiving one packet. microprocessor assisted consume more power with a difference of 29.0037J.