Energy Monitoring System

Energy management (EM) is the key to saving energy in any organization. Much of the importance of energy saving stems from the global need to save energy - this global need affects energy prices, emissions targets, and legislation, all of which lead to several compelling reasons why we should save energy specifically. EM is a continuous process which includes energy monitoring, communicating and processing obtained energy data

To perform an effective energy management, a new system was implemented by 4 final year Electrical Engineering undergraduates namely, H. R. G. Nadeesha, P. M. C. D Navodanie, M. P. Palihawadana, B. C. Pasindu from University of Moratuwa in 2010, under the guidance and supervision of Dr. P. S. N. De Silva, Mrs. J. V. U. P. Jayatunga.

This research focuses on the electrical energy management inside a factory. The system is capable of modeling each section of the factory along with energy data such as maximum demand, power factor, total energy consumption etc. Therefore designers can model the entire factory graphically to get a better understanding.

The Basic idea of this type of system is based on the continuous analysis of the data retrieved from energy meters from all over the factory. After the data is being processed to extract the necessary information, the actual outputs will be compared and contrasted against the energy standards implemented. Then the corrective actions will be taken to minimize the gap. Continuous improvement of standards will be done time to time as needed.

Special features of this new energy monitoring system includes,

  • No need of a specifically intended energy meter
  • Communication is done through power lines
  • Bi directional communication and remote access
  • Scalability

Components in the system are energy meter, data acquisition unit, Serial to Ethernet converter, power supply units and Power line Ethernet Adapter/Modem (PEA). This energy monitoring system is capable of accepting inputs from any kind of energy meter. Data acquisition unit accepts output from energy meter and stores the data such as active and reactive power, power factor, voltage and current etc and also accepts user and PC commands. Serial to Ethernet converter is required to interface the data processing unit and power line modems.

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