Problem Statement Objectives Project Scope

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1.3 Problem Statement

Demand in loads is increasing each day. Furthermore, it increasing rapidly in certain condition and the generation part cannot cope with the particular occurrence scenario that may lead to power demand exceeding the power generate in generation plants. This scenario also happens due to over-usage of power by the loads. As it is acknowledged, nowadays electrical network in domestic house is utilizing switches for on and off any particular electrical equipment. Loads like fans and lightings are installed in several places in the house and the switches might be installed everywhere nearer to the loads. Therefore, this project offers the usage of controlling and monitoring all the loads just in one single center. The center means consumer may be able to access every load in the house just in one place without putting an effort to reach for switches of the loads. Besides, this project offers consumer the power consume per loads so that the consumer may know actual power rating of loads utilized and increasing their awareness towards shutting down loads that are unused and consume higher power rating.

1.4 Objectives

There are four main objectives that need to be completed in order to make this project successful. They are: 1 To study about controlling and monitoring system and its applications. 2 To design and develop a power consumption monitoring system using Programmable Logic Controller PLC via Human-Machine Interface 3 To design and develop a control load using Programmable Logic Controller PLC via Human-Machine Interface 4 To observe and analyze power consumption via eight cases of loads 4

1.5 Project Scope

This project is focused on development and implementation on controlling and monitoring system for consumer in one of a domestic house. The aim is to control loads and monitor power consumption using PLC type OMRON CJ2M-CPU11 via HMI type OMRON NB-Series Programmable Terminal PT with real load utilization that consists of lighting and fan in a house. Initially, all the equipments that involve are OMRON CJ2M- CPU11 PLC-Type, OMRON NB-Series PT and Power Analyzer. All of these equipments will be connected via the utilization of serial communication standard RS-232 and RS- 485. As for acknowledgement, OMRON NB-Series PT is the device that acts as HMI for this project. They are CX-Programmer for PLC, CX-Protocol for Power Analyzer and NB-Designer for HMI. There are number of loads involved. They are seven unit fluorescent lamps with five using magnetic ballasts and another two lamp using electronic ballasts. As additional loads, two wall fans are also involves. All of these respective loads are installed on a wooden board for the analogy of loads distribution in domestic house. There load are labeled and there are also software involve as well. Then, analysis will demonstrate in comparison of power consumption between experimental result and theoretical result based on the implementation of load utilization. The implementation of all load utilization is observed based on eight cases that control and monitor by consumer. 5

1.6 Thesis Outline