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FINAL PROJECT PRESENTATIONON

ENERGY MANAGEMENT SYSTEM FOR RESIDENTIAL BUILDINGS

(Home Automation System (HAS), Automatic Transfer Switch (ATS) and Smart Energy Meter)

BY

ADEYEMI IDRIS (EEE/11/5041) & OLAGBEGI SEGUN DAYO (EEE/11/5103)

INTRODUCTIONNigeria have been plagued with unstable, epileptic and unreliable energy supply with only 55% of the populace having access to electricity. The robustness and flexibility of EMS makes it to improve the lifespan of electrical appliances by preventing devices from effects of fluctuating supply voltage, allowing user to keep track of electricity consumption at a particular period of time and also remotely controlling home appliances at home. The ability of a single system to perform these numerous functions makes it unique.

AIM

The aim is to design and construct an Energy Management System for a Residential building

OBJECTIVES

The objectives of the project are:

i. to automatically switch supply of power from public utility to Generator.

ii. to Measure the energy consumed in a residential building in kWH.

iii. to Remotely control electrical devices in a Residential building via SIM module.

METHODOLOGY

The entire system is divided into four parts:

1. Voltage sensing

2. Energy Meter

3. Home Automation

System(HAS)

4. Automatic Transfer SwitchAUTO

ENERGY MANAGEMENT SYSTEM BLOCK DIAGRAM

ENERGY MANAGEMENT SYSTEM FLOWCHART

VOLTAGE SENSINGIt is made up of voltage sensing components. it comprises of a 220/12volts transformer of capacity 500mA, four diodes arranged as a bridge and potentiometer for varying the voltage during voltage sensing.

CIRCUIT DIAGRAM FOR VOLTAGE SENSING

ENERGY METER

It comprise of a 20*4 LCD display screen, ACS712 current sensor of 20Amps capacity, and a microcontroller the energy meter.

CIRCUIT DIAGRAM OF ENERGY METER

HOME AUTOMATION SYSTEM (HAS)

It comprise of 4 in1 Relay, GSM SIM800 and Arduino microcontroller.

AUTOMATIC TRANSFER SWITCHIt switches supply from Generator mode to Mains mode based on the voltage sensed by the voltage sensing part of the project.

AUTO

If voltage<160volts

For voltage>160volts and <240 volts

CONCLUSIONSThe overall aim of this project has been carried out to large extent successfully which is to manage energy consumed in a residential building by allowing a user to remotely control home appliances via SMS from a mobile phone and also to be able switch between two sources of AC mains supply as well as to measure energy and voltage in a residential building. Various literatures were reviewed on past work and also various components that were used in designing the project.

RECOMMENDATIONSThe project solves the problem of exorbitant charges on electricity bill in a residential building, hence, it should be greatly embraced by residential buildings in Nigeria as a means of proper account and management of electrical energy usage in a building. Although, the project functions properly, but further improvements can be made in the number of appliance to be controlled as it seems a little bit restricted to three devices in the project.