Development of electrical energy saving assistant

Abstract

The main objective of the device introduced in this paper is to help reducing the peaks of daily demand curve of national power grid, with the introduction of an automatic power disconnection function. The device simultaneously provides electrical consumers with a graphical indication of electrical energy usage of single phase electronic installation and several other useful parameters. The device mainly consists of an energy metering unit, a processing unit, a real time clock calendar and a user interface. There is an auxiliary line to supply power to the non - critical electrical appliances such as Refrigerators, AC machines, etc. and a 433MHz Radio Frequency range Amplitude Modulation Receiver unit to receive information on peak hours of the Daily Demand Curve which will be sent to the processing unit of the system for the function of turning off the auxiliary power line. The device can be fixed to any single phase electrical installation of 230V and 40A (max). In the consumers view point, this device not only shows information about daily consumption as a graph but also helps the consumer to plan his next month energy consumption. In order to illustrate the effectiveness of this device, a detailed analysis was conducted to show how the device reacts to the behaviour of the demand curve. Secondary data about various sources of power generation and consumption were used to analyse the total impact on demand curve and finally the energy saving and financial benefits were estimated.