1. Automatic Meter Reading (AMR) & Relevance of Interoperability
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2. Various communication options Interoperability Standardization issues
Topics covered
Motivation beyond AMR
Benefits
Various communication options
Interoperability
Standardization issues
Present status
Conclusion
CPRI’s activities in AMR
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3. Necessity to automate the operation of Energy Meter Reading.
Motivation
Necessity to automate the operation of Energy Meter Reading.
To generate data base – can be used for different application apart from billing – e.g. Load profile, network expansion etc.
Methodology oriented towards use of available infrastructure & technology.
Tariff – open plan – (Metering tariff similar to Telecommunication sector)
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4. For better relationship between utilities (Electricity provider) and Electricity Consumers.
Utilities get better control and monitoring of electricity consumption.
Utilities are implementing 100% metering and Static Meters are also finding their place in utilities.
Online data base.
Need
Control Centre System
Meter
Communication Channel
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5. Benefits of an AMR system include
Save on regular "on-cycle" meter reading.
Obtain more easily (and in some cases, instantly) initial and final meter readings for opening and closing accounts.
Streamline high bill investigations.
Flag potential high consumption before customers get a high bill.
Help pinpoint system losses.
Help detect theft of service.
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6. Enable custom billing dates.
Support customized rates (e.g., for large customers).
Provide detailed consumption information to customers.
Provide watchdog services, like leakage monitoring,
peak period billing.
Improve cash flow management.
Improve revenue forecasting, by tying detailed
consumption information to production data and
expected billings.
Aid in tariff design (postpaid / prepaid – various packages).
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7. Enable more frequent readings with little incremental cost.
Enable more sophisticated rates; i.e., more closely track costs, or encourage energy conservation.
Improve meter management; ensure meters are properly sized; determine optimal time in service or cumulative registration.
Reduce bill adjustments.
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8. INFORMATION WE CAN GET FROM INTELLIGENT METERING
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Information We Can Get From Intelligent Metering
System
Maintenance
Customer
Billing
Energy
Accounting
Disconnections
& Reconnections
Tariff
design
Losses
Revenue
Protection
Load
Control
Distribution
Automation
Forecasting
Complaints
Power
Quality
Transfers &
Vacancies
Managing
Credit
Collecting
Cash
Operation
Expansion
What a Distribution
Utility does
Metering
Information
State of art Energy Meters with Automatic Meter Reading system & backend I.T. support can provide all these information.
INFORMATION WE CAN GET FROM INTELLIGENT METERING
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9. Communication Protocols
Most of protocols derived from OSI 7 layer model and most of them are based on
3-layer DLMS (Distribution Line Message Specification)
IEC standards
IEEE standards
ANSI standards
European CENELEC standards
Proprietary standards
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10. For economical and the nature of data flow, different media are used.
Communication Medium
For economical and the nature of data flow, different media are used.
Power Line Carrier Communication (PLCC)
Public Switched Trunk Network (PSTN) – Conventional Telephone
Radio - VHF & Microwave / VSAT & GSM/CDMA
Optical Fiber Cables (OFC)
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11. Various AMR Technologies
PLCC (Power Line Carrier Communication) also known as Distribution Line Carrier Communication (DLCC) for Low Voltage lines.
PSTN (Public Switched Telephone Network)
GSM (Global System of Mobile Communication)
CDMA (Code Division Multiple Access)
LPR /SRR (Low Power Radio / Short Range Radio)
VSAT (Very Small Aperture Terminal)
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12. It works on 2.4 Ghz ISM (INDUSTRY SCIENTIFIC MEDICINE) band
New Technologies
ZigBee
It works on 2.4 Ghz ISM (INDUSTRY SCIENTIFIC MEDICINE) band
Use of this band do not require any license in many countries
Frequency used is 915 Mhz in USA and 868 Mhz band in Europe
Has low power consumption
Simpler & cheaper than Bluetooth
Can form routed mesh network
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13. (Very Small Aperture Terminal)
VSAT
(Very Small Aperture Terminal)
High Initial cost
Suitable for Grid metering.
Used where real time data is required
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14. AMR / AMI / Smart Metering / AMM
AMR – Capturing meter data electronically (local / remote) and transferring to billing centers.
AMI – Collecting as much as details of consumer loads (load profile), process and present relevant data & statistics to relevant users (billing, planning, vigilance, regulatory, consumer, executive management, energy audit /account group etc) – Software centric.
Smart Metering – AMI + (Demand Side) control (consumer / utility or both)
AMM – Generic
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15. Why Immediate Attention?
Meter data is becoming vital part in deciding many of the performance and planning parameters of utilities.
Many of utilities are looking for automation to manage huge amount useful data generated from meters and other sources of grid/network.
AMR is becoming part of DA/DSM/SCADA leading to AMI / Smart metering solution.
AMR / AMI is becoming best tool to check AT & C losses and control / detect pilferages.
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16. Total population - 130 Lakhs Total Consumers - 3 Million.
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Statistics - DISCOM
Area ,000 sq km.
Number of districts - 7
Total population Lakhs
Total Consumers - 3 Million.
No. of Distribution transformers - 75,000
Length of HT lines - 49,000 Circuit Kms
Length of LT lines - 97,000 Circuit Kms
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17. Implementation Phases
Interface & Feeder meters (mostly along with integrated SCADA)
HT consumers (Industrial & Commercial)
Distribution Transformers (DTs)
LT consumers (commercial and domestic)
All other categories (100% metering, 100% AMR)
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18. Interoperability
Different user groups and applications require different sets of data from meter data bank.
A simple application may require merely a daily consumption for simple billing and pilferages monitoring (ex. residential).
Planning wing of a utility may require load profile data for a typical industrial / commercial area to make decision for load splitting or for enhancing capacity of transformers.
This calls for standardized open protocol for accessing required / selective meter data for each type of user in a more efficient, secured and reliable way.
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19. Standardization Issues
At present there is no unique International product standard for AMR.
Few countries are already having their own National specific AMR standards (e.g. China).
However many National and International bodies / organisations are working on standardization.
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20. Indian Scenario
Generic standard for AMR is available (adopted from relevant IEC standards) – IS (part 1 & 2): 1999 (Reaffirmed 2004) - Telemetering for Consumption and demands.
This standard refers following cross references for type test requirements of AMR systems and meters
IS 1766: Time Switches for Metering and Load control.
IS 13779: AC Static Watt-hour Meters, Class 1 & 2 - Specification.
IS 14697: AC Static Transformer operated watt-hour and VAr -hour Meters, Class 0.2 S and 0.5 S - Specifications.
IS 15707:2006 Testing, Evaluation, Installation and Maintenance of AC electricity meters - Code of practice.
CBIB TR No. 88: 1999 – Specifications for AC Static Electrical Energy meters
( + cross references within above all standards)
Apart from above, specific communication protocol tests are required – few standards are IEC (DLMS /COSEM).
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21. Meter Protocol standard
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Meter Protocol standard
IEC (dlms) FEATURES
ADOPTED BY IEC AND CEN
OPEN STANDARD
MULTI ENERGY
MULTI MEDIUM
SELECTIVE ACCEESS
INTEROPERABLE
CONFORMANCE TEST TOOL
INSTANTANEOUS VALUES
PROFILES
TARIFF READINGS
POWER QUALITY PARAMETERS
AND OTHERS
OBJECT MODELLING - COmpanion Specification for Energy Metering
[COSEM]
DATA IDENTIFICATION – Object Identification System [OBIS]
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22. (source: Websites/periodicals/reports/correspondence)
Present Scenario
Worldwide many utilities are having pilot / commercial deployment of AMR / AMI systems (many with integrated SCADA).
In India too, many utilities are coming up with pilot / commercial deployment of AMR
To name a few - BESCOM, NDPL, BSES- R & Y, BEST, SOUTHCO, MGVCL, MPMKVVCL
(source: Websites/periodicals/reports/correspondence)
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23. Mobile Telecom Scenario
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Mobile Telecom Scenario
GSM
CDMA
Global Standards
User Friendly.
Manufacturers adhere to standards.
Voice
Data
Supported
Many value added services.
Rate of growth is Fast.
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24. Future Meters - Vision Local Intelligent Meter Display Unit
Pole mounted Cluster AMR meter cubicles
45.00
230V
11kV/440V
35.25
SS 33/11kV
07.00
Internet
Billing Server / EMS
DISCOM – HQ
MIS
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25. Need for Seamless Connectivity
Conclusion
To have a similar growth in power sector any meter of any make shall be needed by any application from anywhere.
Need for Seamless Connectivity
For any AMR system, mix up of different communication technology is required for end to end complete solution.
The communication technology for different levels of AMR systems are to be decided based on existing communication infrastructures of utility, cost, purpose of AMR (billing, load profile, valued added services, outage management etc) and ease of installation.
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26. Integrated AMR enabled meters reduces cost
Conclusion (Contd.)
Integrated AMR enabled meters reduces cost
Modem cost is falling & further reduction in overall cost is possible in near future due to massive deployment of AMR systems by utilities.
Selection of appropriate communication medium also plays vital role in determining cost & reliability of AMR.
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27. Conclusion
Utilities get online data regarding energy consumption, generation, loss and revenue.
Energy theft can be minimized and defaulters can be penalized by disconnecting the supply remotely.
Use of available technology & infrastructure - by integrating system to suit the requirements like adapting different communication media & protocols like IEC.
Open protocol implementation simplifies integration of meter network to ERP / SCADA system of utility.
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28. AMR Feasibility studies.
CPRI’s Services in AMR
Offer consultancy in building AMR system and testing & evaluation of AMR systems.
AMR Feasibility studies.
Technology & product assessments including communications technologies.
Conformance test tool for IEC / DLMS compliant meters and developmental assistance.
Collaborative work in development / standardization of product, evaluation & testing of product and commercial / pilot scale deployment.
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29. Questions ?
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