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Explore prepayment metering in rural UAE areas, addressing the benefits, challenges, technology options, and future developments for efficient revenue management. The paper covers deployment in Abu Dhabi Emirate, selection criteria, security measures, and a pilot system analysis.
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PREPAYMENT METERING IN RURAL UAE AREAS Prof. Dr. E. El-Shirbeeny Electric Power Research Laboratory Abu Dhabi Water & Electricity Authority ADWEA
IN THIS PAPER • National Overview • Drivers • Technology & Barriers • Pilot Scheme • Future Developments
ADWEA GENERATION TRANSMISSION DISTRIBUTION TAW ADDC UmNar TRANSCO AADC Bainounah ADWEC MRF
ADWEA SYSTEM One Million Customers 67,340 Km2 Area 12% An. L. G. Rate
LOCAL CONDITIONS • Maximum ambient temperature: 50 degC • Humidity could reach 100% • LV AC operating voltage 415 V • Farms are scattered on wide desert areas • Difficult transport and access • High callout costs
METER WITH CT’s At GREENHOUSE FARM Metering Current Transformer box Meter and supply panels
REVENUE MANAGEMENT PROBLEMS • Delays in payment due to customer apathy • Social values and difficulty in disconnecting • High rate of debt accumulation • Use of old inaccurate meters • Difficult meter reading • Illegal reconnections • Unmetered supply
WHY PREPAY METERS • Cut down bad debts • Protect revenue • Reduce operating costs • Simplify sales operations • Higher metering accuracy • Encourage energy saving • Enhance customer services
AVAILABLE TECHNOLOGIES • Coin operated • Token • Key • Smart card • Keypad • ONLINE
SUPPORTING SYSTEMS • Vending/Payment Terminals • Billing System • Databases • Operating Platforms • Communication Networks
SELECTION CRITERIA • Minimum customer interaction • Simplicity and ease of installation • Maximum utilization of available facilities • Efficiency • Reliability • Minimum maintenance • Scalability • Security • Cost
SECURITY MEASURES • No access for Unauthorized party • Alternative means in case of system failure • Concurrent operation with a redundant system
CHALLENGES • Prepayment is not “off-the-shelf” technology • Prepayment = shift in mind of service provider • Community acceptance • Modification cost of metering & billing system • Need of strong technical support and training • Reliable communications and IT systems • Harsh local operating environment • Higher farm loads • Extra protection
Payment Terminal Customer PILOT SYSTEM <online payment> Payment Terminal Customer Control Center Billing System DB Data Concentrator Data Concentrator Local Transreceiver Local Transreceiver Load Disconnect Meter Disconnect Meter Load
ADVANTAGES OF SELECTED SCHEME • Simpler software and hardware • Real-time integration with billing system • Centralized database and security modules • More vending points at a lower cost of ownership • Easier system management • More efficient arrears collection • Increased database and encryption security • Easier data management and scalability • Very quick setup of online vendor at lower cost
Electricity Meter Electricity Meter Electricity Meter 11/0.415 kV Distribution SS FUURE DEVELOPMENT Electricity Meter 1. Extension to water & gas services Gas Meter Radio Transmitter Data Concentrator Radio Receiver DataCollector PLC Modem Water Meter
FUTURE DEVELOPMENT 2. Applying online prepayment scheme to: • large commercial customers • Governmental buildings 3. Upgrading to AMR 4. Integration in distribution management