Author : Pavani C 1
Date of Publication :7th November 2016
Abstract: A Home Energy Management (HEM) system plays a crucial role in realizing residential Demand Response (DR) programs in the smart grid environment. It provides a homeowner the ability to automatically perform smart load controls based on utility signals, customer’s preference and load priority. This paper presents the hardware demonstration of the proposed HEM system for managing end-use appliances. The Hem’s communication time delay to perform load control is analyzed, along with its residual energy consumption. In general, an HEM unit comprises:a) an embedded device running a GUIsoftware application, which includes a DR algorithmthat serves as the brain of the HEM system. It makes a decisionto switch ON/OFF selected end-use appliances based onthe utility signal received, as well as homeowner’s load priorityand preference settings. It is also responsible for collecting electricalconsumption data from all load controllers and providingan interface for homeowners to retrieve appliances’ status andreview their power consumption; andb) An HEM communication module, which provides communication paths between theHEM unit and its load controllers. This module is attached tothe HEM unit and enables the HEM unit to send load controlcommands to all load controllers, and receive responses back.A Linux with a Zig Bee-enabled communicationmodule is used as the HEM unit for this demonstration. The concept will be implemented on a Single Board computer containing ARM 9 Processor an Embedded device with embedded Linux. The hardware components used in this project Friendly ARM Mini 2440 (Single-Board Computer) with 400 MHz Samsung S3C2440 ARM9 processor, Zigbee Modules, Light, Motor, 8051 microcontroller. The software’s used OS: Embedded Linux2.6.32, Language: C++, IDE: Qt Creator2.1.0.