Electricity Metering
and Management
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Our presence
• 6 Global locations with customers in 45 countries
– Over 5 million meters and growing at over 1.5 million a year
We are
• First company to introduce electronic meters in India
• India’s largest and No. 1 energy metering company
• Largest exporter of metering products from India
• Having 4 manufacturing plants in India and 4 R&D centers of excellence across the
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Infrastructure
Infrastructure
– Five modern manufacturing facilities in
India
– ISO 9001 Certified
– Complete type test facilities
– Design quality assurance
– In-house reliability group
– Total IT support for operations
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Infrastructure
Cont…..
• Strong focus on Research and
Development
• National award for R&D in electrical sector
• Over 350 strong R&D team
• Work force of more than 600 persons in
field
Systems Approach
Systems Approach
Grid Metering Industrial Metering Commercial Metering Domestic Metering APEX APEXABT monitoring & billing Error compensation services
HT/LT PREMIER HT/LT PREMIER
Remote reading MFM Meters Whole current meter
Demand Controller Dual register meter
Housing society payment solutions Building automation
SITU calibration equipment
Single phase meter/single
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Yadav Measurements Pvt. Ltd.
• Accredited by National Accreditation Board for
Testing and Calibration Laboratories (NABL) since
1996
• Accredited by United Kingdom Accreditation
Service (UKAS) since 1999
• Only UKAS accredited lab in India
• Accredited as per IEC 17025: 1999
• BIS certified laboratory for static energy meters type approval testing.
• Participation in various inter laboratory comparison and proficiency testing ….maintain and improve technical capability
Metering School
Metering School
–
–
Objectives
Objectives
Enhance understanding of metering, its application and
limitations.
Exposure to recent trends in electricity metering. Provide a forum for sharing experiences.
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Next
Generation
Metering
Next Generation Metering
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“I-Credit 300” (Features…)
• V range - 240V, -40% to +30% i.e. 144V-312VAC. • Current Range - 5-30A, 10-60A, 20-100A
• Class 1.0, 50 Hz. AC. • Shorted link design.
• Two current sensors: Shunt in Phase, CT in Neutral.
• Self billing feature (ABC i.e. Authenticated Billing Code support for billing parameter)
“I-Credit 300” (Features…)
• 6 digit LCD display
• Cage clamp terminal design
• Phase to neutral protection
• Ultrasonic Welding between meter base &
cover
• Energy recording in single wire operation
• Capability to Display and Communicate in
absence of power (through internal
battery)
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“I-Credit 300” (Software)
• Single / Bi-vector measurement possible.
• Forwarded Energy registration during current reversal
• Seasonal TOD registers, 4 No’s Max. supported.
• High Resolution energy register.
• Load Survey : 50+ parameter days for 30 minute IP
“I-Credit 300” (Tampers/Events)
• Load Unbalance (ALARM1) • Magnet interference.
• Neutral Disturbance. • CT reversal.
• Power “ON” / “OFF” events • Over Current.
• Cover opening detection. • Spark Discharge.
Prepayment metering
or energy bank account:
Very few commodities we use first and then pay…. Why then Electricity?
• UK has been using prepay metering for
more than 100 years!
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From old coin operated
meters…..
To
State of art intelligent
keypad
meters....
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Improved Revenue Cycle
Pay before use
Keep customers on supply
Recover money owed (debt)
Lower Overheads
Reduce or do away with Meter Readings
No bill production
No bill distribution
No need to chase payments
No further actions such as disconnections
Why Prepayment – Energy
Supplier?
Social Acceptability
Keep customers on supply
Customer responsible for disconnection
Load and Demand Side Management
Limit load
Load based
Time based
Discourage Tamper
Why Prepayment – Energy
Supplier?
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>80% Mobile phones used in India are prepaid
Flexible Payment Solution
Pay to suit your income status
Daily, Weekly , Monthly
Budgeting
Show true cost of consumption and money left
Reduce consumption when income is tight
– make money last
Reduce waste – conserve energy
No Bills
No hidden surprises
No having to find the money
No billing errors
No socially unacceptable
disconnections
Confidential Go to Vending Outlet Buy as much electricity as you want to A receipt is produced with the unique
number printed on it Number is
entered into the meter Credit is added to the meters Account Vending Outlet generates a unique numeric code
“Liberty” is Simple and Easy to use
Repeat When Required
The Liberty Meter
Tokenless - therefore no token
provision or replacement costs
Uses secure (Triple DES) encoded
Vend Codes
Codes are meter specific and can
be used only once
Codes can be vended from a
variety of sources (Retail, Call Centre, Telephone, Internet….)
Codes easily repeated at little cost if lost, from any source
irrespective of the original vend source
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Functionality software based. Can easily be configured to meet the needs of the Utility
Customer Friendly Functionality
Plain Text messages and warnings
Overload protection
Load Limiting instead of / as well as disconnection
Functions
Account (default display)
Calculates number of days before
disconnection based on average daily usage over previous week
Displays rate (up to 4) data and unit cost
Displays on demand previous days, weeks and months costs (stores previous 12
months data)
Current load (cost/hour)
Previous codes entered
Total cash entered
Standing Charge/Debt
kW MD
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Functions
Friendly Credit
No disconnection at night
No disconnection at weekends
No disconnection on Public Holidays
Meter functionality can be changed by Engineering Codes appended to a
cash vend
Change tariff prices
Change tariff
Change limits (Current Rating, Account Ceiling, Load Limit Level and
Emergency Credit
Change of Tenancy
Retained Credit
Cost of current load being used based on tariff price
Cost of previous day, week and month consumption Cost of previous 12 months consumption (month-by-month)
KW LOAD KW 5-25 LOAD COST Rs. 23.75/HR PREV DAY Rs. 307.50 PREV WEEK Rs. 2750.00 PREV MNTH Rs. 8690.00 JAN Rs. 7389 DEC Rs. 6580
Cost Information
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Overload Protection and Demand Side Management
Prevent meter from being overloaded or customers exceeding their load factor.
Warning given when load is within a set percentage of disconnection limit
Similar regime can be employed for Load Limiting.
LOAD HIGH OVERLOAD
Values set/changed by 20-digit ‘Change Limit’ transaction.
First 500kWh at 3.0 Rs/kWh Second 500kWh at 4.0 Rs/kWh All remaining kWh’s at 5.0 Rs/kWh
Up to 4 rates can be defined
Tariffs can have a monthly, quarterly or yearly reset
In addition to the 8 ‘Step’ tariffs the meter can also store 8 predefined ‘Seasonal Time of Day’ (STOD) tariffs.
Meter can store 8 predefined ‘Step’ tariffs
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Can deal with most currency symbols (£, $ Ұ etc.)
Rs 250.00 Rs. 0.00
Allows easy to understand warnings to be given
MONEY LOW NO MONEY
Allows text headers for displayed data
ACCOUNT DAYS LEFT
Tokenless
Therefore no apertures Hence nowhere to insert
foreign bodies.
No token acceptance issues.
Immunity to External Influences exceeds current standards
Authenticated communications
High security data encryption used for all data transfer (monetary and engineering)
Audit Log of events Downloaded at the same time as
meter readings
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Meter can be configured to
perform a set action on
detection of a tamper event:
Disconnection with alarm
Rejection of subsequent vends
Setting of reportable tamper flag
All or some of the above
Optional remote display and keypad
Provides convenient two way communication with Liberty providing consumers with access to all of Liberty’s functions irrespective of the meters location
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The Liberty Meter
New Functions
Prepay to Credit mode and vice versa
Authenticated Billing Codes (ABC)
Scrolling Text Messages
If code is lost it can be reproduced at any outlet – not necessarily the one that
originally vended the code.
With the right infrastructure the codes could be vended or reproduced at:
Shops
Banks
Post Offices
Call Centre
Interactive Telephone System
Internet
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Liberty Vend code
Shop Post Office Bank 24 hr Call Centre The Internet A N Other
Vending options
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Vending Options
• Web based vending
• Utility office outlet – PC based vending
• GPRS/CDMA Point of Sale terminal
• Integration with retailers
• ATM Machines
• Web portal
Vending Options Contd…
• IVR
• SMS based vending
• Prepaid cards
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Feature Set
• We shall use already established relation between consumer & ATM machines.
• There will be two options for consumers on ATM machines: Money transaction or electricity
transaction.
• For electricity transaction bank will first verify account of user for credit availability.
• After verification vend code will be generated , printed & at the same time money will be
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Self Billing System
Putting the customer in control of their energy payments
z ABC code Generated by meters
z Either when pre-programmed or when prompted Liberty
displays meter readings and authentication number.
z Authentication number can contain additional data (Fraud
etc..)
z Information passed on by customer (manually, via
IVP/IVR, touch-tone phone or Internet)
z Release number given in exchange
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Indian Regulators
• WBERC
– has provided a rebate of 4.75% on tariff as incentive
– Reduced meter rents from 25/- to 15/- in 1P and from 50/- to 30/- in 3P.
– Mandatory for temporary connection.
• HPERC
– Subsidized rate for prepaid consumers to encourage consumers.
Indian Regulators Support..
• Haryana regulator had ordered
implementation of prepayment scheme
• Karnataka regulators have taken similar
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Government
• Delhi
– Govt Notice issued for Prepayment meters to be installed at all government offices and
residential connections
• National electricity policy
Regulatory support needed
– Consumer interests are properly being taken care of in the new system.
– Consumers are being provided incentives (discount/rebates) to opt for prepayment voluntarily.
– Tariff rationalization for retrospective computations
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NDPL has launched Value Power
• Customer interface is the key to the project
• The meters are now in operation and have
generated good response • Tariff changes have been
carried out as per Regulatory orders
• Good customer response
Himachal Pradesh
• Tariff rebate
proclaimed by the regulator
• Pilot project underway • First indications of
good response from the customer
• Festivals (Urja Mela) are used for
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West Bengal
• New town residential area • Wide spread educational
campaign by the utility • Active support from
Regulators
• Placed order on Secure, after due tender process • Active participation by
Gujarat Utilities
• Madhya, uttar and Dakshin Gujarat have
placed orders
• Each order of 250 meters each
• Meters will be installed on middle class
consumer in Surat and Vadadora
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Builders in Delhi and NCR
• Around 10000 meters installed
• 15 accounts developed • New applications
• Multi Element product Payment solution is a
defacto metering scheme
• Dual registers for mains and DG supply supported
New CT/PT Operated Meters
•Supports higher Baud Rate communication
•Meter reading time less than 3 minutes for entire meter data.
Enhanced memory capacity of the meter
600 events , 1000 Parameter days Load Survey, Last 12 billing histories
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Enhanced Immunity
• Meter made to withstand higher external influences • Higher Magnetic Immunity (0.5T)• Higher Electro static discharge immunity
(Spark discharge -upto 35kV)
‘Prodigy’-Composite Metering
Unit for LT CT Metering
Segment
Innovation in the Metering
Industry for LT CT
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Why Do We Need
Innovative Product?
•
Most electricity theft andlosses occur in the
low-tension network • Distribution is the
weakest link in the
power supply chain • Cost & Profit Center
Energy accounting for import and export
Metering in the LT CT Segment
• Consumer Metering
– Complex arrangement of static energy
meter, external CTs, meter box and
accessories such as fuses, cabling etc
• Distribution Transformer Metering
– Performed using the same meters as for consumer metering
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LT CT Segment Metering
• Major problems with existing
implementation
– LT CT metering installations are quite complex as they
involve:
• external CTs, Static Energy Meter, Meter Box, connecting cables etc.
– Terminal joints and other connections provide an easy
path for fraud and other losses
LT CT Segment Metering
• Major problems with existing implementation…
– Metering units have to be segregated according to their CT ratios, e.g.50/5,100/5,150/5,200/5
– Some consumers hinder or even prevent Utility meter readers from entering premises to read meters
– Distribution Transformer Metering is often found to be tampered or damaged by miscreants, yet no one is accountable for such meters
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LT CT Metering: Problem versus
Solution
– Collection of external accessories for metering (external CTs, Static Energy Meter, Meter Box, connecting cables etc)
•
• Integrated Metering Unit specially designed for LT metering Integrated Metering Unit specially designed for LT metering –– no need for external accessories.
no need for external accessories.
– Poor system accuracy – determined by the errors in the energy meter and errors in the external CTs
•
• Integrated Metering Unit has better inherent accuracyIntegrated Metering Unit has better inherent accuracy
– Terminal joints and connections make theft easy, and can also introduce other losses due to poor contact
•
• Innovative design eliminates the need for a terminal block, Innovative design eliminates the need for a terminal block, thereby preventing fraud and reducing other losses
LT CT Segment Metering
• Problem versus Solution…
– Metering units have to be segregated according to their CT ratios, e.g.50/5,100/5,150/5,200/5
•
• Single wideSingle wide--range meter suitable for most applications range meter suitable for most applications
– Distribution Transformer Metering is often found to be tampered or damaged by miscreants, yet no one is accountable for such meters – Some consumers hinder or even prevent Utility meter readers from
entering premises to read meters
•
• Integrated meter can be installed out of reach, and can Integrated meter can be installed out of reach, and can be read remotely by wireless link
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LT CT Segment Metering
Secure has pioneered the introduction of innovative
Secure has pioneered the introduction of innovative
metering
metering
– Secure has designed a special product for LT CT segment applications
LT CT Segment Metering
Thread Through Concept
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LT CT Segment Metering
• Design based on the Thread Through Concept where secondary Thread Through Concept
cable of DT and/or the supply cable for LT CT consumer pass directly through the meter for measurement
• Long-range meter: (Current Range 40-200 A) • Outdoor meter: IP-54 compliance
68 Confidential Floating clamp for securing/ tightening the cable. Stainless steel cable-piercing screw (volt tap)
Distribution
Transformer
Metering - Scheme
5-6m above ground level Service line
HHU Radial distance of 100
Meter
Meter with Low Power Radio
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Prodigy- Principal Features
• Thread-through meter (cable passes directly through meter) • Single wide-range metering unit (40-200 A)
• Class 1.0 system accuracy
• Low Power Radio (LPR) communication capability (range up to 100m)
• In built GSM Modem for remote communication. (Optional) • Special anomaly recording features for DTM application viz.
high & low voltage, over-load and under-load condition etc. • Environmental protection to IP 54
Prodigy- Principal Features
(cont.)• Snap-fit arrangement for meter cover & base
• Special arrangement for multiple cable connections for Distribution Transformer metering
• Meter stores cumulative energy values for Active (Forwarded), Apparent and Reactive (Lag and Lead)
• Historical Data: meter maintains value of energy, MD, TOD MD and ‘hours on & off power’ for the 12 most recent billing points.
• Load survey storage of energy values & ’instantaneous parameters’ -up to 400 parameter days @ 30 minute integration period
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Application Segments
• Metering of LT Three-Phase Distribution
Transformer The meter is installed outdoors on
the secondary side of the distribution transformer. Meter is mounted 5-6m above ground level, near the transformer, and is read using LPR / GSM .
• LT CT Consumer Tariff Application The meter is mounted outside the consumer’s
premises. There is no need for external CTs or a Meter Box.
STREET LIGHT ENERGY
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Modern Solutions
Weatherproof enclosure
Astronomical Timing as per sunset & sunrise
Capacitor for reactive compensation
MCB for protection
