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Date, Venue, etc..( Arial, Font size 18 )AMI experience of Tata Power


Introduction

• Tata Power is engaged in Supply of Electricity across Mumbai Licensed area.

• The total spread of licensed area is 485 sq. km. and houses a population of approximately 1.45 crores

• Customer base in the Mumbai licensed area is around three lakh.

• Tata Power has recently installed an Automatic Meter Reading system for high value customers in Industrial & commercial segment.


Objective of AMR system

• To fully automate the process of meter reading and billing without any human intervention.

• Faster detection of metering abnormalities, theft and network faults.

• Monitoring and profiling energy consumption of consumers.

• Provide load profile data to key customers on Tata Power Customer Portal.

• Facilitate accurate Load forecasting.

• Facilitate Demand Response Initiatives.


Secured GPRS cloud

HT/ LT customers Communication technology

Internet Internet

MDASSAP Billing server

Web server

Information to customer through internet

AMR system architecture

SAP PI

MDMMiddlew

are

AMR Data Centre


MDAS

Meter Data Acquisition System (MDAS) :

• A common Meter Data Acquisition System is deployed to read all makes of meters.

• MDA system acquires meter raw data stored in the Modem memory.

• Raw files received from different types of meters are processed through the respective API utility tools and converted into XML file.

• Also, health status of all the installed modems, communication logs and events are captured in MDAS.


MDMS Meter Data Management System (MDMS) :

• MDM is the central repository for meter data and maintains interval data, event logs , register data & outage history for all the connected meters.

• The MDM system has a facility to upload meter data read through

CMRI. This facility is used to manage the data of meters not covered under AMR.

• MDM validates meter data as per predefined validation rules to ensure that only correct data is sent for billing.

• The MDM system provides many useful MIS reports


MDMS

The MDM system has following functional elements

- Data collection, aggregation and analysis

- Validation, Editing & Estimation - Report generation and status reporting

- Event list

- Customer Care

Itron Enterprise Edition Platform

MeterData Management

CustomerCare

Curtailment Manager

Revenue Protection Suite

Multiple Data Collection Systems

Handheld AMR Solutions

C&I Meter and Collection Systems AMI

Utility Operational and Back-office Systems


Middleware

Middleware :

• The SAP PI middleware is used for integrating MDAS, MDM and SAP billing system for seamless exchange of data.

• The SAP PI system maps the meter CDF file with MDM system.

• New meter creation or deletion is done in SAP system which is communicated to the MDM through the middleware.


Communication -Last mile connectivity & related issues

• Selection of communication technology < Speed < Reliability < Data Security < Cost ( Capex + Opex ) GPRS was selected as the best option on the above parameters for high

value commercial and industrial consumers.

• Meter protocols Intelligent Modems are deployed which collect meter data using API API are provided by Meter suppliers as per MIOS. Modems collect data from meter at 30 minute interval & stores the same in

its memory. The data is pushed every midnight to MDAS.


Last mile connectivity and related issues in AMR

• Integration with Billing system

< Billing data is collected in MDM.

< MDM does data validation

< SAP-PI Middleware is used for pushing data from MDM to SAP

• Sharing meter data with customers

< Customer logs on to TPC Customer Web Portal through internet.

< Customer portal pulls meter data from MDMS


Tata Power Customer Care Portal


Consumption in Graphical format


Consumption in Histogram format


Last mile connectivity in AMR

• The capital & operational cost per meter is relatively high for GPRS. Hence, GPRS is not viable for low end consumers. It is necessary to explore

technological option suitable for deployment of AMR for low end consumers. • In many Residential / Commercial complexes, large number of meters are installed in

close vicinity and form a cluster.

• RS-485 Modbus seems attractive and viable option for covering cluster meters under AMR.TPC has installed one pilot based on RS-485 technology and the performance is under observation.

• Physical looping of meter communication ports is cumbersome and tamper prone. RF Mesh seems to be an option. TPC is planning to set up a pilot based on RF Mesh technology for cluster metering installations.

• For Residential consumers, PLC may be a viable option. TPC is planning to set up a pilot project to explore this option.


Future Road Map

First Steps towards Smart Grid


Pilot project on RS-485

• Around 40 number three phase WC meters installed in a commercial

complex are covered under pilot.

• All meters are L & T make with inbuilt RS-485 port

• The RS-485 terminals of all meters are connected in a daisy chain and are

looped to a data concentrator.

• The data concentrator collects meter data once every fifteen minutes and

stores the same in its memory.

• The data concentrator has inbuilt GPRS Modem which pushes meter data

to Head end system at scheduled interval( Once a day)


Rishab Chambers


RS 485 Looping


DCU Installation


System Configuration for RS-485 cluster

DCU DCU DCU

201 2

…

21 40

…

581 600

…

…

1 2 30

22 582

DCU

…

LT Commercial consumers

RS485 RS485 RS485

Internet Internet

MDAS

SAP Billing server

Web server

SAP PI

MDMMiddlew

are


Pilot with RF Mesh technology

• A pilot project based on RF Mesh technology is planned to be set up covering about 200 meters.

• The meter data will be collected in a data concentrator using RF .

• The DCU will push the data to Head end system using GPRS.

• The proposed system architecture is as below

22


System Configuration for RF Mesh Technology

DCU

…

Internet Internet

MDAS

SAP Billing server

Web server

SAP PI

MDMMiddlew

are


Pilot with PLC technology

• A pilot project based on PLC technology is planned to be set up covering about 100 meters in residential segment.

• The meter data will be collected in a data concentrator using power line as a communication media.

• The DCU will push the data to Head end system using GPRS.

• The proposed system architecture is as below


System Configuration for PLCC Technology

DCU

…

Internet Internet

MDAS

SAP Billing server

Web server

SAP PI

MDMMiddlew

are

0.4KV 3-4W POWER LINE

DISTRIBUTION TRANSFORMER

DCU WITH INBUILT GPRS MODEM

COMMUNICATION MEDIUM GPRS NETWORK 11KV / 0.4KV

1- LT Domestic Consumer

3- / 1- Cluster Meter

POWER LINE COMMUNICATION

DISTRIBUTION TRANSFORMER


Interface Meter Monitoring System

TPCD

AMR Servers

@ CARNAC Polling servers

Web- BasedClient s on TPC WAN

Master Servers @ LDC, Trombay

BEST &REL

TPCCORPORAT

E WAN

TPCCORPORAT

E WAN

JDBC connectivity

Database &Application Servers

TPC Automation WAN

* BEST / REL

New Fire Wall

1 2 3

WEB SERVER

TPC existing Fire Wall

GLOBALINTERNET

GLOBALINTERNET

SLDC

TPCG

TPCD TPCG

RS 485 to Ethernet converter

ABT meters at Substation

SAP server


Pilot on Smart Metering solution

It is proposed to install one pilot towards implementation of Smart Grid initiatives. This would include smart metering & Home area network .

Smart metering will include< Remote disconnection /reconnection < Load control / Device control Home Area Network (HAN) with energy gateway < Demand Response Signaling. < Provision of Customer Energy Usage Information to In-Home Displays. < Control Activation/Deactivation of HAN Appliances. < Real time pricing signals


Thanks for patient hearing.


Pilot Project Objectives

• To evaluate the potential value of remote equipment control, thermostats, and other energy conservation features

• To evaluate electricity meters with a load limiting/disconnect switch

• To evaluate customer interest & experience in Home Area Display Units


Pilot project architecture


Targeted Customer Benefits

• Convenience- customer has access to their own data - accurate timely meter reads without intrusion in their property

• Consumption and Demand Response Control- interval data for time of use rates- smart thermostats- load limiting disconnect switch

• Reliability- reduced outage times- proactive load and voltage data


Targeted Customer Benefits

• Power Quality- accurate timely load and voltage information for Network planning

• Utility/Customer Business Savings- meter reading cost

- asset management- outage management- theft reduction- other operational savings


What’s Next?

The opportunities are endless…

• Allow customers to have fun with High tech products the way they were meant to be ....

• Control almost anything:• Lighting• Security Systems• Thermostats• Remote controlled devices

The "smart" meter can be utilized to:• Read the meter both locally and remotely

(on demand)• As a sensor• Remote limitation of the throughput

through the meter to control demand• Interconnection to premise-based

networks and devices, remote control of meters within home

• Remote provisioning of services (e.g. Security)

How Smart metering is different from Traditional metering

Traditional/ AMR meter

Manual/Automated reading

Utility database

Smart meter

Interface

Home controls

Gateway AMI Infrastructure

Smart homes

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Documents

mdm system

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meter raw data

data of meters

sap system

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interval data

correct data