This document summarizes a student project presentation on an energy management system for residential buildings. The system includes a home automation system to remotely control devices, an automatic transfer switch to switch between a generator and main power supply, and a smart energy meter. It aims to improve energy reliability and allow users to track consumption. The presentation covers the objectives, methodology, system diagrams, component descriptions, and conclusions of automatically managing energy usage and supply sources in residential buildings.

1. A
FINAL PROJECT PRESENTATION
ON
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)

2. INTRODUCTION
Nigeria 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.

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

4. 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.

5. METHODOLOGY
The entire system is divided into four
parts:
1. Voltage sensing
2. Energy Meter
3. Home Automation System(HAS)
4. Automatic Transfer Switch
AUTO

6. ENERGY MANAGEMENT SYSTEM BLOCK DIAGRAM

7. ENERGY MANAGEMENT SYSTEM FLOWCHART

8. VOLTAGE SENSING
It 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

9. 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

10. HOME AUTOMATION SYSTEM (HAS)
It comprise
of 4 in1
Relay, GSM
SIM800
and
Arduino
microcontr
oller.

11. It 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

12. CONCLUSIONS
The 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.

13. RECOMMENDATIONS
The 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.