energy management system- prototype

7/29/2019 Energy management system- prototype

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Team & Members

Abstract Intention

Existing System

Projected System

Block Diagram Block Explanation

Software and hardware

Experimental results

Advantages

Disadvantages

Conclusion

Future works

References


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Pradeepa.S 31608106066

Sabreen Taj 31608106074

Sakthivel.S 31608106078

Sreerekha.R 31608106095

GUIDEMr. Ananth Ravindran (Asst professor)


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The development of an Automatic Power

Meter Reading (APMR) system is presented in

this paper. The APMR system is consists of

Digital Power meters installed in everysubstation. The Digital Power meter (DPM) is

a single phase digital kWh power meter with

embedded ZIGBEE modem which utilizes the

ZIGBEE network to send its power usage

reading wirelessly. At the receiver side an

LCD displays the current and voltage readings

and the power along with power loss, update

the database.


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This project aims at wireless communication

between substations using ZIGBEE module.

Automatic meter reading (APMR) is an

effective means of data collection that allowsubstantial saving through the reduction of

meter re-read , greater data accuracy. With

the advent of digital technology analog

electro-mechanical meter is continuouslyreplaced by digital electronic meter.

ZAPMR has wide coverage and retrieve meter

reading back wirelessly. The most important

of these are performance and reliability


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To implement automatic Power meter

reading for providing high flexibility,

accuracy using ZIGBEE Network


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Meter reading taken manually

Errors occurred due to less concentration

Meter reading not accurate

Huge Manpower needed


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Meter reading taken automatically using

zigbee technology

Normal work happen at any time and

external conditions Less Manpower

High Accurate meter reading


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MicrocontrollerSignal

Conditioning

CT

PT

Actuator

LCD

Serial

Communication

RS232

ZIGBEE

Serial

communication

Network


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Input power supply given to consumer

through actuator

Actuator acts as a switch, it is controlled

by microcontroller Current transformer and potential

transformer are used measure the power by

microcontroller

Display unit are used to display meterreadings and bill status

The meter reading send to admin center

through ZIGBEE using serial communication


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The operation of power supply circuits builtusing filters, rectifiers, and then voltageregulators. Starting with an AC voltage, asteady DC voltage is obtained by rectifying

the AC voltage, Then filtering to a DC level,and finally, regulating to obtain a desiredfixed DC voltage. The regulation is usuallyobtained from an IC voltage regulator Unit,

which takes a DC voltage and provides asomewhat lower DC voltage, Which remainsthe same even if the input DC voltage varies,or the output Load connected to the DCvoltage changes.


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PIC16F877A microcontroller is used for this

project

It is 8-bit Microcontroller

System is RISC Architecture It has Small set of Instruction set

It has 35-Instructions only

Compatibility: avail 28/40 Pin ICs


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Operating Speed Max 20 MHz, Voltage-(2-

5.5)v

Memory:

Flash Program 8Kx14 Words,RAM 368 Bytes,

EEPROM Data Memory 256 Bytes

Low power, High speed Flash/EEPROM

Technology


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It has 5 Ports for Internal and External usage

It has on chip Timers. 3 Timers are avail

It has in built Analog to Digital Converter

In built Multiplexer availability for signalSelection

It has serial as well as Parallel

Communication facilities

In built Capture, Compare and Pulse width

modulation


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PTs or VTs are the most common devices

used. These devices are conventional

transformers with two or three windings (one

primary with one or two secondary). They

have an iron core and magnetically couple

the primary and secondary. The high side

winding is constructed with more copper

turns than the secondary(ies), and any

voltage impressed on the primary winding is

reflected on the secondary windings in direct

proportion to the turns ratio or PT ratio.


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RS232 standard is anasynchronous serialcommunication method.

The word serial means, that

the information is sent one bitat a time.

Asynchronous tells us that theinformation is not sent inpredefined time slots.

Data transfer can start at anygiven time and it is the task ofthe receiver to detect when amessage starts and ends.


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Diagram that a relay uses an electromagnet.This is a device consisting of a coil of wire

wrapped around an iron core. When electricity

is applied to the coil of wire it becomes

magnetic, hence the term electromagnet. The

A B and C terminals are an SPDT switch

controlled by the electromagnet. When

electricity is applied to V1 and V2, the

electromagnet acts upon the SPDT switch so

that the B and C terminals are connected.

When the electricity is disconnected, then the

A and C terminals are connected. It isimportant to note that the electromagnet is

magnetically linked to the switch but the two

are NOT linked electrically


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ZigBee is a Ad-hoc networking technology for LR-WPAN

Based On IEEE 802.15.4 standard that defines the PHY

and Mac Layers for ZigBee.

Intended for 2.45 Ghz , 868 Mhz and 915 Mhz Band. Low in cost ,complexity & power consumption as

compared to competing technologies.

Intended to network inexpensive devices

Data rates touch 250Kbps for 2.45Ghz ,40 Kbps 915Mhzand 20Kbps for 868Mhz band.


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MPLAB IDE

Hi-tech c compiler

Visual basic c++ 6.0


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ORCAD design

Visual basic


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Using zigbee accurate values is being taken

for nearly two substations and is being

transmitted to the administrative office.

In this external load is being added . Loadscan be varied by using potentiometer.

Since data logging is done it is very useful to

get back all the data.

Automatic power shut down is done in caseof high input given.


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Less operation cost

Less manpower

High efficiency and reliability


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Utility metering

Power Industries


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In this paper we have shown the updated power readings and

the way of detecting power loss. Traditional meter reading for

electricity consumption is done by human operator fromstation to station. This requires huge number of labor

operators and long working hour to achieve complete area

data reading. Human being may make errors while noting so to

overcome all those problems we have introduced ZIGBEE awireless modem The development of a ZIGBEE Automatic

Power Meter Reading (APMR) system is presented in this paper.

So by using ZIGBEE huge work is reduced and also labors. It is a

wireless modem throughwhich readings are displayed and can

be monitored without any effort and also readings are data

logged for future reference. At the receiver side the meter

reading , updated database is obtained.


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WEB REFERENCES:

www.atmel.com

www.dallas.com

www.gpsfavorities.comwww.holtek.com

www.microcontroller.com

http://www.hp.com/go/HPVEE
http://www.atmel.com/http://www.dallas.com/http://www.gpsfavorities.com/http://www.holtek.com/http://www.microcontroller.com/http://www.hp.com/go/HPVEEhttp://www.hp.com/go/HPVEEhttp://www.microcontroller.com/http://www.holtek.com/http://www.gpsfavorities.com/http://www.dallas.com/http://www.atmel.com/

energy management system- prototype

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