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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

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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 globe

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Prestigious Queen’s award for Export from UK

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InfrastructureInfrastructure– 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– OFGEM, UK approved manufacturing

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InfrastructureCont…..• 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

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Systems ApproachSystems Approach

Grid Metering

Industrial Metering

Commercial Metering

Domestic Metering

APEXAPEXABT monitoring & billing

Error compensation services

HT/LT PREMIERHT/LT PREMIERRemote readingMFM Meters

Whole current meterDemand ControllerDual register meter

Housing society payment solutionsBuilding automation

SITU calibration equipment

Single phase meter/single phase prepayment metering system

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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

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Metering School Metering School ––ObjectivesObjectives

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 MeteringNext Generation Metering

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“I-Credit 300” (Single Phase Meter

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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)

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“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• Upto 3 histories on display + 12 histories in reading

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“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: for today and tomorrow

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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…..

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To State of art intelligent keypad meters....

UK alone has 3.7 Million prepay meters!

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Improved Revenue CyclePay before useKeep customers on supplyRecover money owed (debt)

Lower OverheadsReduce or do away with Meter Readings

No bill productionNo bill distributionNo need to chase paymentsNo further actions such as disconnections

Why Prepayment – Energy Supplier?

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Social AcceptabilityKeep customers on supplyCustomer responsible for disconnection

Load and Demand Side ManagementLimit load

Load basedTime based

Discourage Tamper

Why Prepayment – Energy Supplier?

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>80% Mobile phones used in India are prepaidFlexible Payment Solution

Pay to suit your income statusDaily, Weekly , Monthly

BudgetingShow true cost of consumption and money left

Reduce consumption when income is tight – make money lastReduce waste – conserve energy

Why Prepayment – The Customer?

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No BillsNo hidden surprisesNo having to find the moneyNo billing errors

No socially unacceptable disconnections

Why Prepayment – The Customer?

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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

RepeatWhen

Required

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The Liberty Meter

Tokenless - therefore no token provision or replacement costsUses secure (Triple DES) encoded Vend CodesCodes are meter specific and can be used only onceCodes 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 UtilityCustomer Friendly FunctionalityPlain Text messages and warningsOverload protectionLoad Limiting instead of / as well as disconnection

The Liberty Meter

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FunctionsAccount (default display)Calculates number of days before disconnection based on average daily usage over previous weekDisplays 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 enteredTotal cash enteredStanding Charge/DebtkW MDTime, Date, Display Check

The Liberty Meter

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FunctionsFriendly Credit

No disconnection at nightNo disconnection at weekendsNo disconnection on Public Holidays

Meter functionality can be changed by Engineering Codes appended to a cash vend

Change tariff pricesChange tariffChange limits (Current Rating, Account Ceiling, Load Limit Level and Emergency Credit

Change of TenancyRetained Credit

The Liberty Meter

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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 LOADKW 5-25

LOAD COSTRs. 23.75/HR

PREV DAY Rs. 307.50PREV WEEK Rs. 2750.00PREV 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.

Load Management

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First 500kWhat 3.0 Rs/kWh

Second 500kWhat 4.0 Rs/kWh

All remaining kWh’sat 5.0 Rs/kWh

Up to 4 rates can be definedTariffs can have a monthly, quarterly or yearly resetIn 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

Flexible Tariff Capability

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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

Plain Text Alphanumeric Displays

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TokenlessTherefore no apertures

Hence nowhere to insertforeign bodies.

No token acceptance issues.

Immunity toExternal Influences

exceeds current standards

Authenticatedcommunications

High security data encryption used for all data transfer

(monetary and engineering)

Audit Log of eventsDownloaded at

the same time asmeter readings

Fraud and Tamper

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Meter can be configured to perform a set action on detection of a tamper event:

Disconnection with alarmRejection of subsequent vendsSetting of reportable tamper flagAll or some of the above

Fraud and Tamper

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Optional remote display and keypadProvides convenient two way communication with Liberty providing consumers with access to all of Liberty’s functions irrespective of the meters location

The Liberty Meter

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The Liberty MeterNew Functions

Prepay to Credit mode and vice versaAuthenticated Billing Codes (ABC)Scrolling Text MessagesPaged Displays

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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:

ShopsBanksPost OfficesCall CentreInteractive Telephone SystemInternet

Vending to Liberty is Simple and Easy

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Liberty Vend code

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ShopPost OfficeBank24 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

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Vending Options Contd…

• IVR• SMS based vending• Prepaid cards• Proprietary kiosk

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ATM Machines and Bank portals

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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 deducted from consumer’s account.

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SMS based vending

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Self Billing SystemPutting the customer in control of their energy payments

ABC code Generated by metersEither when pre-programmed or when prompted Liberty displays meter readings and authentication number.Authentication number can contain additional data (Fraud etc..)Information passed on by customer (manually, via IVP/IVR, touch-tone phone or Internet)Release number given in exchange

Data

Code

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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.

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Indian Regulators Support..

• Haryana regulator had ordered implementation of prepayment scheme

• Karnataka regulators have taken similar steps

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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– Emphasis on prepayment metering

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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

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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 consumer awareness

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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

consumers and WBSEB

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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• Consumer education campaign planned

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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 meter600 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

Applications

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Why Do We NeedInnovative Product?• Most electricity theft and

losses occur in the low-tension network

• Distribution is the weakest link in the power supply chain

• Cost & Profit CenterEnergy accounting for import and export

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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

– Virtually no differentiation for this specialized application

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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

– Poor installation practices aggravate these problems

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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 lossesthereby preventing fraud and reducing other losses

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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 linkbe 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 meteringmetering

– Secure has designed a special product for LT CT segment applications

– Secure introduced a unique metering concept

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LT CT Segment Metering

Thread ThroughConcept

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LT CT Segment Metering

• Design based on the Thread Through ConceptThread Through Concept where secondary

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

• Overall Product Accuracy : Class 1.0

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Oblique View of Prodigy Meter

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Floating clamp for securing/ tightening the cable.

Stainless steel cable-piercing screw (volt tap)

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Distribution Transformer Metering - Scheme

Meter Reader

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

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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

• Abnormal Events logging: 200 time-stamped events can be logged

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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.

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STREET LIGHT ENERGY MEASUREMENT & CONTROL

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Modern SolutionsWeatherproof enclosure

Astronomical Timing as per sunset & sunrise

Capacitor for reactive compensation

MCB for protection

Energy metering & control for Streetlight

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