Project Background Motivation Analysis Of Power Consumption By Using Programmable Logic Controller (PLC).

1 CHAPTER 1 INTRODUCTION

1.1 Project Background

The world now is facing situation where the demand of power and electricity is very high and continuously progressing from time to time. Electricity is needed to run everyday life and to make world a better place to stay and live. The growth of electric utilities in size and number of interconnecting has increased recently. The development of advancement in software and microprocessor technology provide great controller that is very useful for human daily life. There are many studies in literature review about control and monitoring application is widely used nowadays. Great investment is made to achieve more comfortable conditions with optimal control of system to obtain maximum benefits. Today, the improvements in the system communications have simulated the implementation of distributed systems. These distributed systems are then usually managed by a centralized supervisory platform, commonly known as Supervisory Control and Data Acquisition SCADA system. Besides, Human-Machine Interface HMI is part of the machine that involves in study, planning and design of the interaction between users and other devices. Example of HMI which user can see and touch is membrane switches, rubber keypads and touch screen. In HMI interface design it consists of three stages which is interaction specification, interface software specification and prototyping. 2 Therefore, the aim of this project is to create a system that is more comfortable, more effective and able to analyze the pattern of power consume by loads with the assistance of controlling and monitoring system using Programmable Logic Controller PLC. To make it even easier, the system should have HMI which is touch screen program to control, monitor and display all the parameters involve.

1.2 Motivation

The purpose of this project is to design an advanced controlling and monitoring system of power consumption to satisfy and ease consumer’s daily routine that involve power usage. It is based on basic operation of electricity loads including lighting and fan that the controlling and monitoring process of their power consumption in different place can be achieved by one command through visual user interface. For example, lights at room are still on even though there are no people inside the room. The power wasted is highly not recommended since the peak demand may increase and literally cause the cost of power usage increasing too. Thus, this project provided time saving in which user can interact through visual user interface to control and monitor all places in the house at one point. Furthermore, the measurement of power consumption is carried out to determine the difference and relationship between types of load used in a house via eight cases. 3

1.3 Problem Statement