Demand side Load Management Using AT 89s52 Microcontroller with renewable energy

Abstract

High power consumers, such as industries, require substantial electricity loads for their production processes. They are assigned a maximum demand limit by the electricity board, which represents the highest power drawn from the grid by the consumer during any 30-minute interval within the billing period. It is the responsibility of these consumers to ensure that their power consumption remains within this limit. Failure to do so results in significant penalties. Monitoring consumption manually is challenging and prone to errors, leading to additional charges on bills, which can be substantial. Therefore, controlling the maximum demand is crucial. To address this issue, the industry has categorized its loads as vital and non-vital. We propose a system that effectively manages maximum demand. When the demand exceeds the predefined maximum value, a sensor detects it and sends a signal to a microcontroller, specifically the AT89S52 model. The microcontroller then transfers non-vital loads from the main power supply (MSEB) to renewable energy sources instead of turning them off completely. The system utilizes renewable energy generated from solar panels and/or windmills. By doing so, we can ensure that the maximum demand remains within safe limits without cutting power to non-vital loads.