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Application Notes-AMR or AMI

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Application Notes: AMR/AMI

Application Description

Automatic meter reading/Automatics meter infrastructure has gained action from the past few years with the advent of Smart Grid and greater demand response solutions. AMR / AMI in power industry is the procedure of acquiring meter data from energy meters installed in various substation feeders to the control center for billing, GIS, ABT purposes. Apart from these numerous other applications can also make use of this data for various other purposes like MIS, etc.

A typical AMR / AMI system will consists of two main components viz., Data Concentrating Unit (DCU) and Meter data head end system. Meter data Head end system will take care of communicating with meters directly through Data concentrating unit (DCU) sitting in the substation.

Meters can be directly connected to the Head end system using GPRS/CDMA modems. Also, if there is more than one meter in the area, all the meters can be connected directly to the DCU. In this case, DCU will handle the communication with meters and store the data in its internal database. Inbuilt GPRS/CDMA modem in the DCU will take remote communication to the control center head end system. This is major advantage of using a DCU, where the same data can be taken to the local substation SCADA system.

DCU devices like Kalkitech’s SYNC 2000 are responsible for fetching the data from the meters in different protocols and converting to the DLMS/Modbus for control center head end system. SYNC2000 DCU sends collected data to control center Head end system using push/pull mechanism. Historical data logged in the device can be transferred to head end system using DLMS or FTP push mechanism. Head end system can also be loaded with proprietary protocol drivers which will fetch the data from meters using transparent channels in modems and DCU. Head end also supports secure VPN connections over dynamic IP, with

support for GPRS/CDMA and 3G technologies.

Figure 1 Application Highlight AMR/AMI

Features

? Security: High end security over VPN and

CIP enabled DCU and M2M gateways. ? Meters with proprietary protocols can be

communicated with head end system using transparent channel in DCU. ? Multiple meter data can be fetched using a

single DCU by multi-dropping the meters. ? Future expansion to 3G technologies. ? Head end system can be configured with

stand alone or distributed database from which control center software can access the data. ? Head end also exposes the data in protocol

specific format like DLMS, OPC etc or also through enterprise connectivity. ? Notification engine in the head end system

intimates the events to the subscribed uses through SMS, email etc.

Copyright ? Kalki Communication Technologies Ltd .All Rights Reserved

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Products Used

Products used for AMR/AMI application are: ? SYNC2000 with GPRS modem as DCU ? SYNC4000 with M2M gateway configuration. ? SYNC5000 as head end system for AMR/AMI running in control center.

Advantages

? Multiple meter data can be fetched using a

single DCU which will reduce the cost of the overall solution. ? Full data and device security through VPN

or CIP features in SYNC 4000 and DCU. ? Solution is scalable for any future expansion

of the project with the help of distributed architecture of the head end system.

Product specifications and descriptions in this document subject to change without notice Last Updated 25 July, 2010

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