Automatic meter reading nnb ppt

GURUKULINSTITUTEOFTECHNOLOGY
PRESENTED BY –NAGENDRANATH BISWAL REGD NO-1221315049
DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING

OVER VIEW
Introduction
What is AMR?
Traditional meter reading
Block diagram of AMR
Construction of AMR
Theory of operation
Primary components of AMR
Meter interface module
Communication system
Benefits of company & consumer
Disadvantages
Conclusion

INTRODUCTION
In 1886 , the first ac transmission line was installed .
Hence , the first generation of power meters was found
which we know as (Watt-Hour meter ).
As most of us know , the first generation(traditional
meter reading devices ) is being used tell now in many
places .
To overcome this disadvantages we have to modify a
new reading system that provides remote reading ,
safety , on-time readings and a simple user interface .
That is what AMR provides successfully .
Power consumption reading and analysis using AMR
has a lot of benefits which we will discuss in this papers .
This benefits make it clear that this system will be used
in most of the regions of the world in the next few years .

What is AMR?
AMR brings significant benefits to the customer by
providing increased meter-reading accuracy, fewer
estimated bills, rapid response to read requests,
automatic leak detection and billing options and provides
detailed usage information about individual sites, which
allows the company to offer variable rates and
encourage price -responsive behavior among
customers.
AMR improves operational management by providing
just-in-time meter replacement, tamper detection,
remote access, and automatic scheduling of meter
reading. In short, AMR will optimize cost savings and
maximize efficiency while providing improved customer
service.

Traditional meter reading system
Highly Person dependant.
Human errors cannot be avoided.
Accessibility of meters in rural/ Agricultural zones.
Energy Audits performed based on bill collection which
is highly inaccurate.
Billing done mainly on estimated/ monthly average
basis
Inability to monitor and control discrete loads
Billing cycle requires excessive time.
Meter data used only for billing, cannot help in analysis
like demand analysis, energy audit, pinpointing losses,
etc.

Diagram of AMR

Construction of AMR
The Automatic Meter Reading (AMR) system
consisting of
 Consumer Side Unit (CSU)
 Server Side Unit(SSI)

Consumer Side Unit (CSU)
Transmitter unit is used to send the meter reading to the
receiving end.
The data is send to the receiver end through RF channel.
The transmitter unit consist of transmitter module,
encoder HT12E, microcontroller AT89C2051 and display
driver 74LS244.The pulses are given to the of
microcontroller via optocoupler.
For display the meter reading we are using seven
segments.
The supply which is given to the transmitter unit is +5
volt.
The meter data is stored on the EEPRO memory unit .

Server Side Unit (SSU)
At the receiving side , a RF receiver collect the data
transmitted from the consumer side , decode it , and
transfer the decoded data to the server computer which
analysis this data and insert it into the database

AMR Transmitter unit

AMR ARCHITECTURE
RF/ PSTN / Modem RF/PSTN / Modem
Meter 1 Meter 1 Meter 1
Meter n Meter n Meter n
Central Office
Host Computer
Station.
Distribution
Transformer 2.
Distribution
Transformer 3.
Distribution
Transformer 1.
Data Cocentrator
Unit DCU 2
Data Cocentrator
Unit DCU 3
Data Cocentrator
Unit DCU 1
PLCC
PLCC
PLCC

AMR theory of operation
Consumer side unit (CSU) operation:
•The microcontroller receives the measured quantity as analog
data from the energy meter port which is , in watt-hour meters ,
a potential and current quantities .
•The microcontroller is programmed to analysis this quantities
then it display the reading in the LCD screen .
•When the server wants to collect the reading from the meter ,
it sends a message to the meter which receive it throw the
antenna and the GSM modem connected with it .
•This message call the meter to wake up and then it makes a
data frame consisting of the meter’s information and sends it to
the server which collect them and store them in the database .
•The data collection can be done at any time or periodically
such as hourly, daily, weekly or monthly.

AMR theory of operation
Server side unit (SSU) operation:
•First , the SSU send a waking message to the CSU to
tell it to wake up and start preparing data .
•After the CSU response and send the data , the SSU
collect this data , analysis it and make the computations
needed , then it store them on the database of the
company .
•The SSU can reprogram the CSU and fully control it by
sending connect/disconnect commands or applying
remote energy management .
•This reprogramming and controlling processes is being
done throw commands transferred throw the
communication channel between the SSU and the CSU .

GSM based communication of AMR
 GSM modem
 Antenna

GSM Modem
 Dual Band or Triband GSM GPRS modem
(EGSM 900/1800MHz) / (EGSM 900/1800 / 1900
MHz )
 Designed for GPRS, data, fax, SMS and voice
applications
 Fully compliant with ETSI GSM Phase 2+
specifications (Normal MS)
 Interfaces
 RS-232 through D-TYPE 9 pin connector
 Power supply through Molex 4 pin connector
 SMA antenna connector
 Toggle spring SIM holder
 Red LED Power on
 Green LED status of GSM / GPRS module

Data Concentrator Unit (DCU)
 The Data Concentrator sits on the
loop of secondary of the
distribution transformer. Collects
meter readings from all the meters
using Power Line Communication
System at predefined intervals.
 The DCU and all the meters
connected to it can be considered
as a sub-system of the HCS. The
sub-system is set up with a DCU
monitoring the low voltage power
zone downstream of a
Distribution Transformer.

ADVANTAGES
.
ELECTRIC COMPANY BENEFITS
•Smart automated processes instead of manual work
•Accurate information from the network load to optimise
maintenance and investments
•Customized rates and billing dates.
•Streamlined high bill investigations.
•Detection of tampering of Meters.
•Accurate measurement of transmission losses.
•Better network performance and cost efficiency.
•Demand and distribution management.
•More intelligence to business planning.
Better company credibility

CUSTOMER BENEFITS
 Precise consumption information
 Clear and accurate billing
 Automatic outage information and faster recovery
 Better and faster customer service
 Flag potential high consumption before customer
gets a high bill.

The economical charges that must be satisfied in
order to replace the old traditional meters with the
new AMR devices .
The cost of involving communication companies
in the system in order to make a data connection
between the SSU and the CSU because this
companies acquire payments to let the distribution
company use her system
Disadvantages of AMR

AMR Function & Features
 Time of Use and Meter Reading
 Self-diagnostic and Status Reporting
 Networking and System Hierarchy
 Data Communication and Other Functions
 Compatibility with water and gas metering
systems
 Use of Ethernet LAN/ Internet for Remote
Meter Reading and Data Management.

CONCLUSION
 Automatic Meter Reading can detect meter
tampering and illegal drawing of power
 AMR as a way of improving customer service
while reducing the cost of reading meters.
 The Automatic Meter Reading system enables
us to save millions of rupes every year in meter
reading costs and also provide our customers
with better information about water use, more
accurate billings, and keep rates as low as we
can.

GANDHIINSTITUTEOFINDUSTRIALTECHNOLOGY
REFERENCES
Electric power transmission”, Wikipedia
Automatic meter reading”, Wikipedia

GANDHIINSTITUTEOFINDUSTRIALTECHNOLOGY

Automatic meter reading nnb ppt

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