` Presentation Title ( Arial, Font size 28 ) AMI experience of Tata Power Date, Venue, etc..( Arial, Font size 18 )
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.
AMR system architecture AMR Data Centre HT/ LT customers Communication technology SAP PI MDM Middleware MDAS SAP Billing server Secured GPRS cloud Web server Internet Information to customer through internet
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 Utility Operational and Back-office Systems Meter Data Management Customer Care Curtailment Manager Revenue Protection Suite Itron Enterprise Edition Platform Handheld AMR Solutions C&I Meter and Collection Systems AMI Multiple Data Collection 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
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)
System Configuration for RS-485 cluster SAP PI MDM MDAS Middleware SAP Billing server Web server DCU Internet DCU DCU DCU 1 2 30 RS485 RS485 RS485 … … … … … 40 600 1 2 20 581 21 22 582 LT Commercial consumers
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
System Configuration for RF Mesh Technology SAP PI MDM MDAS Middleware SAP Billing server Web server Internet DCU …
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 SAP PI MDM MDAS Middleware SAP Billing server Web server COMMUNICATION MEDIUMGPRS NETWORK Internet DISTRIBUTION TRANSFORMER DCU 11KV / 0.4KV DISTRIBUTION TRANSFORMER DCU WITH INBUILT GPRS MODEM POWER LINE COMMUNICATION … 0.4KV 3-4W POWER LINE 1- LT Domestic Consumer 3- / 1- Cluster Meter
Interface Meter Monitoring System ABT meters at Substation Web- Based Client s on TPC WAN RS 485 to Ethernet converter BEST &REL WEB SERVER GLOBAL INTERNET TPC CORPORATE WAN TPCD TPC Automation WAN SLDC TPC existing Fire Wall JDBC connectivity New Fire Wall TPCG 2 3 1 SAP server AMR Servers @ CARNAC Polling servers Master Servers @ LDC, Trombay * BEST / REL TPCD TPCG Database &Application Servers
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
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
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
Smart homes What’s Next? • 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) • 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 Home controls Traditional/ AMR meter Manual/ Automated reading Interface Utility database AMI Infrastructure Gateway Smart meter How Smart metering is different from Traditional metering