FORM-2
THE PATENTS ACT, 1970
(39 of 1970)
& THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13) FEEDER AREA SMART METERING IN SMART GRID
ADI INNOVATIVE SOLUTIONS PVT. LTD.,
an Indian Company,
of 201, Rainbow Plaza, Rahatni, Pune - 411 017,
Maharashtra, India.
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

FIELD OF THE INVENTION
This invention relates to the field of automatic meter reading systems.
In particular, this invention relates to communication of metering data.
DEFINITIONS OF TERMS USED IN THE SPECIFICATION
The expression MIU in this specification is used to refer to Meter interface units that are add-on devices to a meter. It can read the meter and communicate the meter reading to the respective device.
The expression DF in this specification is used to refer to a Data forwarder which is a device that is deployed at the distribution transformer end to collect the meter reading, carry out local audit, generate reading for power system parameters (PF, Line imbalance, per unit impedance) with time stamp and communicate the same to a host computer (HCDC) / data concentrator computer (DCC).
The expression Time Stamp in this specification is used to refer to the time when data is read being stamped / linked to the data which is read.
These .definitions are in addition to those expressed in the art.
Acronyms and their details for terms which are known in the art and used in this specification / accompanying drawings:
PLC: Power line communication.
DSSS: Direct sequence spread spectrum
DT: Distribution transformer (11KV / 440V transformer):

WL: Wireless connecting unit.
CT/PT: Current transformer and Potential transformer
AMR: Automatic meter reading system.
KW: Kilowatt, (active power)
KVA: Kilo volt amps.
KVAR: Kilo volt ampere reactive
GSM: Global System for Mobile communication
PSTN: Public Switched Telephone Network
HDD: Hard disk drive
CB: Circuit Breaker
BACKGROUND OF THE INVENTION
Automatic Meter Reading (AMR) is a technology of automatically collecting consumption, diagnostic, and status data from metering devices and transferring that data to a central database for billing, troubleshooting, and analyzing. This technology mainly saves utility providers the expense of periodic trips to each physical location to read a meter. Another advantage of this technology is billing can be based on near real time consumption rather than on estimates based on previous or predicted consumption. This timely information coupled with analysis, can help both utility providers and customers better control the use and production of utilities like water, gas and electricity.
An Automatic Meter Reading (AMR) system for a power utility employs many ways to read meters from a remote location. Some of the techniques known in the art are as follows:

1. Drive by meter: Meters are read using a wireless device fitted in the meter. For communication of meter reading to a central remote location, a hand held unit is provided to read and process the read meter reading when held near the meter.
2. AMR system with data concentrator: Meters are fitted with a communication module comprising a PLC. The meter reading is communicated to a remote location where a DCC is hosted. The DCC is also provided with a storing means. Hence, all the meters are read and the reading is stored in the DCC. On request, stored data is pooled in the host machine / DCC for further processing.
Disadvantages of conventional systems can be summarized as follows:
1. Conventional systems are restricted to a particular type of metering.
2. Conventional systems are restrictive in use and do not facilitate energy audit at intermediate levels.
3. Conventional systems do not use networking concepts and hence are not flexible.
Thus a need is felt for a reliable system for Automatic Meter Reading (AMR) for power utilities that overcomes the disadvantages of the prior art.
OBJECTS OF THE INVENTION
An object of the invention is to provide a reliable system for Automatic Meter Reading (AMR) for power utilities.
Another object of the invention is to provide a system for Automatic Meter Reading (AMR) that is not restrictive of the type of meter.

One more object of the invention is to provide a system for Automatic Meter Reading (AMR) that facilitates energy audit at intermediate levels.
Still one more object of the invention is to provide a system for Automatic Meter Reading (AMR) that is flexible.
Yet another object of the invention is to provide a system for Automatic Meter Reading (AMR) that is efficient.
One more object of the invention is to provide a system for Automatic Meter Reading (AMR) that is secure.
SUMMARY OF THE INVENTION
In accordance with the present invention, there is provided a system for Automatic Meter Reading (AMR) for a power utility comprising a source of power, feeding power to a plurality of distribution transformers (DT), each of the distribution transformers (DT) being adapted to distribute transformed power to a group of users respectively, the system comprising:
• a Meter Interface Unit (MIU) associated with each meter associated with each of the users of the group, the MIU adapted to read the meter reading of each meter and transmit the read meter reading;
• at least one Data Forwarder (DF) associated with a distribution transformer (DT), the DF being adapted to receive the transmitted

meter reading from each of the MIUs within the group, the DF comprising:
- auditing means to audit the power supply with respect to the meter readings read from each meter within the group;
- computing means to compute power system parameters including power factor, line imbalance and per unit impedance;
- routing means to connect to other Data Forwarders (DF) associated with MIUs of other groups of users; and
- transmitting means to transmit the meter readings read from each of the meters and the audited power supply along with the computed power system parameters;
• a central Data Center (DC) comprising:
- a Data Concentrator Computer (DCC) adapted to receive the meter readings and the audited power supply along with the computed power system parameters from the Data Forwarders (DF);
- a network of computers for managing the DC;
- wireless LAN / Ethernet connection means; and
- a Host Computer (HCDC) connected to the DCC and the network of computers through the connection means.
Typically, in accordance with this invention, the Data Forwarder (DF) comprises:
- a PLC modem module;

- a microprocessor module with at least two serial ports;
- a wireless spread spectrum module with serial interface integrated with the microprocessor module;
- a source of power supply; and
- a weather proof encasing adapted to house the DF.
Typically, in accordance with this invention, the Meter Interface Unit (MIU) comprises:
- a PCB retrofitted in the meter;
- a modem module;
- at least one power line coupler;
- a micro controller with external EEPROM and an spi port; and
- an AC to DC power converter.
Additionally, in accordance with this invention, the Data Concentrator Computer (DCC) comprises
- at least one networking port;
- storage means;
- a PLC modem module;
- a motherboard;
- a real time clock on the motherboard; and
- GSM / PSTN interface means for communicating data.

Furthermore, in accordance with this invention, the Data Forwarder (DF) may be adapted to have a two way communication with the Data Concentrator Computer (DCC).
Preferably, in accordance with this invention, the Data Concentrator Computer (DCC) is a low end configuration stand alone computer.
Preferably, in accordance with this invention, the Host Computer (HCDC) is adapted to have at least Pentium 4 configuration.
Additionally, in accordance with this invention, the Host Computer (HCDC) is adapted to have at least 64MB RAM and at least 30GB HDD.
In accordance with the present invention, there is provided a method for providing a system for Automatic Meter Reading (AMR) for a power utility comprising a source of power feeding power to a plurality of distribution transformers (DT), each of the distribution transformers (DT) distributing transformed power to a group of users respectively, the method comprising the following steps:
• providing a Meter Interface Unit (MIU) for each meter associated with each of the users of the group;
• reading the meter reading of each meter;
• providing at least one Data Forwarder (DF) for each distribution transformer (DT);
• transmitting meter reading from each of the MIUs within the group to the Data Forwarder (DF);
t auditing the power supply with respect to the meter readings read from each meter within the group;

• computing power system parameters;
• connecting Data Forwarders (DF) associated with MIUs of different groups of users to each other;
• transmitting the meter readings read from each of the meters and the audited power supply along with computed power system parameters from the Data Forwarders (DF) to a Data Concentrator Computer (DCC); and
• receiving the meter readings and the audited power supply along with the computed power system parameters from the Data Forwarders (DF) at the Data Concentrator Computer (DCC) for further processing.
Preferably, in accordance with this invention, the step of transmitting the meter readings read from each of the meters and the audited power supply along with the computed power system parameters from the Data Forwarders (DF) to a Data Concentrator Computer (DCC) includes receiving meter readings and the audited power supply from the Data Concentrator Computer (DCC).
BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS
The invention will now be described with the help of accompanying drawings, in which:
FIGURE 1 illustrates a schematic representation of a generic power utility distribution system in accordance with the present invention;

FIGURE 2 illustrates a schematic block diagram of a Data Forwarder DF in accordance with the present invention;
FIGURE 3 illustrates a schematic block diagram of a Data Concentrator Computer DCC in accordance with the present invention;
FIGURE 4 illustrates a schematic representation of the inter connection of Data Forwarders and a Data Concentrator Computer DCC in the network of the system in accordance with the present invention;
FIGURE 5 illustrates a schematic representation of the Automatic Meter Reading (AMR) network at the Data Concentrator Computer DCC in accordance with the present invention; and
FIGURE 6 illustrates a connectivity diagram of the DCC with meters using Meter Interface Units MIU and Data Forwarders DF in accordance with the present invention.
DESCRIPTION OF THE INVENTION
The invention will now be described with reference to the embodiments shown in the accompanying drawings. The embodiments do not limit the scope and ambit of the invention. The description relates purely to the exemplary preferred embodiments of the invention and its suggested application.
Conventional systems for Automatic Meter Reading (AMR) known in the art have drawbacks including being restricted to a particular type of

metering, they do not facilitate energy audit at intermediate level and they do not use networking concepts and hence are not flexible.
In accordance with the present invention a system for Automatic Meter Reading (AMR) for a power utility is envisaged that overcomes these drawbacks of the prior art and hence provides a reliable, secure and flexible system.
In accordance with one aspect of the invention, a plurality of intermediate devices hereafter referred to as a Data Forwarders DF are provided at the Distribution transformer DT level for each feeder FDR distributing power from the Distribution transformer DF to the attached loads.
The advantage of using Data Forwarder DF as an intermediate device is to have a network of devices at the Distribution transformer DT level so that a feeder area network can be created. Once this network is created, it will make an energy audit viable at each Distribution transformer DT level and for its attached loads. In the conventional systems, Data Forwarders DF, if used only served the function of an intermediate device to reach out to meters. In accordance with the present invention, the scope of Data Forwarders DF is expanded to carry out local metering at Distribution transformer DT level for KW, KVA, KVAR, KWH with time stamp.
In accordance with another aspect of the invention, all Data Forwarders DF connected to a Distribution transformer DT are time synchronized. This is crucial for making a feeder area network and carrying out an energy audit effectively.

The system in accordance with the present invention is described with reference to FIGURES 1 to 6 herein below.
FIGURE 1 illustrates a schematic representation of a generic power utility
distribution system in accordance with the present invention. The system in
accordance with the invention has a centrally located Host Computer (DC),
a Data Concentrator Computer (DCC) and a Data Center (DC) typically at
the substation while Data Forwarders (DF) and Meter Interface Units (MIU)
associated with meters (Ml, M2....) are located at the Distribution
Transformer (DT) level at the consumer (Ul, U2 ) locations.
The main components of the system for Automatic Meter Reading (AMR) in accordance with the present invention are described herein below.
A Meter Interface unit (MIU) is an add-on device to a pulse energy meter M and comprises a PCB retrofitted in the meter M. The circuit board comprises following major components:
• a modem module is either a PLC or PSTN or FSK/SS Typically, a
19.2Kbps or 100Kbps PLC is preferred. The modem module uses
propriety power line transceiver chip set;
• a power line coupler for 230 V;
• a Micro controller with external EEPROM, which has an spi port. A unique silicon ID is fused in this EEPROM. Using hand held devices known in the art, the meter number, initial meter reading and meter constants are programmed; and
• a power supply converter for converting AC to DC for feeding power
to each sub module.

A Data Forwarder DF associated with each distribution transformer DT comprises a stand alone PCB. The circuit board comprises following major components (also refer FIGURE 2):
• a PLC modem module for 230v and for 1 lKV(optional);
• a low-end microprocessor system PROCR like ARM9 with 1 MB of RAM, 24K of EEPROM with two serial ports. Silicon ID for this device is fused in EEPROM;

• a wireless spread spectrum modem DSSS module with serial interface is integrated along with ARM9 based 32 bit microprocessor system;
• a power supply to feed all these three major units; and
• a weather proof encasing for all the components.
A Data Concentrator Computer DCC comprises a stand-alone computer with the following major components as illustrated in FIGURE 3:
• a stand-alone computer COMP with a configuration that can be low-end, networking ports and storing capacity on hard disk drive and the like;
• a spread spectrum modem SSW module with interface to the computer through a port;

• a PLC modem module with connectivity on the port of the computer;
• a real time clock on the motherboard of the computer; and
• GSM/PSTN modem connectivity with the computer.

A Host computer of Data center HCDC comprises a host computer along with a network of computers. It has following major components:
• a high-end computer, which is connected to the DCC on one side and is on a network of computers for managing the DCC;
• a Host system is a high-end system consisting of at least a Pentium-4 computer system with large RAM (at least 64 MB) and HDD capacity of at least 30 GB; and
• Ethernet or wireless LAN network for connecting the Host computer is connected to the network of computers
FIGURE 2 illustrates a schematic block diagram of a Data Forwarder in accordance with the present invention. The figure illustrates an ARM9 processor PROCR, a spread spectrum based PLC module and a fixed wireless 2.4Gh module DSSS and a GSM module. DCC is connected to DF either on PLC-wireless or through GSM module. A Trivector metering system MTR is provided which is controlled by the ARM9 processor PROCR.
The Data Forwarder DF is a device that forwards the data coming from DCC to the MIU or data coming from the MIU to the DCC. It also acts like a router for other DF units connected to different set of MIUs which may not be accessible to DCC directly. DCC makes a request to DF first, then receives meter data through Wireless Spread Spectrum module or GSM or PLC-MV modem module attached to it. The data received by DF from DCC is analyzed either for routing to other DF or to send on to PLC-LV modem attached to meter (also called as meter interface unit) to obtain meter related information. The response of the meter / MIU is also reported back to DCC

through DF. So, a DF is a device consisting of PLC-LV modem on one side (on the meter side and PLC-MV) and WL-SS modem or GSM/CDMA modem on other side. DF is a router at DF layer as well. Thus DCC can approach a remote DF through an intermediate DF within reach of DCC.
FIGURE 4 illustrates a schematic representation of the inter connection of Data Forwarders (DF-1,..DF-P) and a Data Concentrator Computer DCC in the network of the system in accordance with the present invention.
The metering system built on the DF is adapted to meter electrical parameters namely KW, KVA, KVAR, KWhr, V, F, Current imbalance IR, Iy, IB at DT with time stamp on it. All these parameters are also communicated to the DCC for further analysis. All the electrical parameters acquired at the DT through DF is time stamped and time synchronized with the other DFs on the DTs connected to the same feeder FDR. Hence energy audit at Feeder FDR and at DT level is efficient and authentic. Since all DFs are on their own Intra-network, the data can be tapped from any of the DF there by making information systems more reliable.
FIGURE 3 illustrates a schematic block diagram of a Data Concentrator Computer DCC in accordance with the present invention. The main function of this unit is to accumulate the data from various meters M and push the accumulated information on the Data Center DC network through the host
computer HCDC. Various schemes of meter are implemented in DCC and
i
are governed from the host computer HCDC. The DCC temporarily stores the information based on the metering condition and forwards it to host computer HCDC. DCC is adapted to have connectivity with PLC-MV, PLC-LV, WL-SS, GSM, PSTN-IB, OB modems. The DCC is flexible

enough to connect and collect data from any kind of meter and thus removes the restriction on the type of meter seen in the prior art. The host computer HCDC also implements standard protocol at higher layer and integrates it with DC for two way communication.
The main function of the host computer HCDC is to set up DCC parameter related to metering process, managing connectivity related to meters M and Data Forwarders DF. All the new accounts setup related to meters M, Data Forwarders DF and network is carried out from this unit. The acquired data from DCC is pushed on the data center network. HCDC is an active part of data center DC but does a dedicated job of setting and managing data. The HCDC is connected through DNP protocol which integrates this with different type of information sub systems SS of Utilities and Generating subsystems or SCADAs. Data Center DC is a unit, which manages the database of metered data and also provides various services based on the data to utilities, end customer, power companies, maintenance companies and the like. FIGURE 5 illustrates a schematic representation of the Automatic Meter Reading (AMR) network in accordance with the present invention. FIGURE 6 illustrates a connectivity diagram of the DCC with meters using Meter Interface Units MIU and Data Forwarders DF in accordance with the present invention. The figure shows how meters of different topology are connected to the DF / DCC.
Specifications of the Data Forwarder DF in accordance with the present invention are as follows:
The Data Forwarder DF is a device located at the distribution transformer DT level and adapted to carry out the following functions:

• metering at the distribution transformer DT with a time stamp. The parameters that are metered are line currents, KVA, KVAR, KW, KWhr, frequency and line voltages. Computed parameters include PF, Line imbalance and per unit impedance.
• two-way communication between the HCDC / DCC and the MIU.
• carry out two-way communication with other Data Forwarders DF and perform time synchronization each day.
• optionally carry out control and switching of other attached devices at the distribution transformer DT end.
Initial Input Parameters of a Data Forwarder DF at a particular transformer are:
• HCDC / DCC address;
• Transformer Number;
• Electrical parameter of the distribution transformer DT; and
• Address of all other Data Forwarders DF attached to a feeder FDR of the distribution transformer DT.
Parameters passed from the DCC to the DF during communication are:
• number of meters to be read;
• Addresses of the read meters;
• meter identity; and
• time at which meter is to be read.
Application software embedded on ARM9 processor includes:
• Boot code and the boot loader.
• Initialization routine.

• Communication method-routine between HCDC / DCC and DF
• Communication method-routine between DF and meter M.
• Store and forward mechanism.
• Computation of Power system parameters like Per unit impedances, P, Q, V etc along with time synchronization method.
• Router for other DFs and data communication methods with other DF.
General Specifications:

Metering Specifications: Software based with time synchronization.

Accuracy Class.5-IEC1036/IS 13779
Voltage (Vn) 3Ph 4W-415V AC(-40% to +20%)
Current (In) 5A or 1A (to 200%) with external CT
Power Factor 4 quadrant operation
Frequency 50Hz+/- 10%
Load characteristics 5 VA in potential circuit 0.5V in current circuit
Electromagnetic compatibility IEC 1036/IS 13779 (Class 1.0)
Insulation properties HV & insulation resistance IEC 1036/IS 13779 (Class 1.0)
Temperature 0 deg to 50 deg (under operation) -5 deg to 60 deg (storage)
Parameters to be read KVA each phase separately, KW each phase,

KVAh, kwh
Voltage each phase,
Frequency
Phase and real time clock with time stamp.
Support time synchronization methods.
Display (optional) LCD: 9 digit display.

Storage Readings for 31 days.
CT/PT External

Physical Specifications
Body make
Body type Whether proof casing,
Mountings Pole mount or surface mount.
Operating condition
Temperature -5°C to 75°C
Humidity 90%
Electrical Specifications
Input voltage 230v,/110v,50Hz
Operating voltage ±5V,±12V
Power consumption lOw (total)
Surge Protection Voltage 22KV, with body grounded.
Coupler 230v and 11KV
Mode of communication from coupler to device 50-80 ohms coaxial cable.

Computational Specification

Processor: ARM9 core 180 MHz Atmel A591RM9200: 16K I-Cache, 16KD-Cache
Memory 32MB, 32 bit wide SDRAM 8Mbyte 16 bit Strata flash
I/O Dual RS232 Serial Port
3 Additional Serial Port
USB port for embedding, uploading and
downloading software and upgrades
SPI port with interface to the metering devices
for direct access of registers
Operating System Ported embedded Linux with file system
Interface to metering unit Through SPI port read every 8 sec (programmable)
Interface to Communication units Through standard I/O.
Applications executing on 1. Simple router/repeater based on the
the processor. requirement.
2. Short circuit, imbalance, per unit impedance.
3. Power Audit, loss computation.
4. Metering KVA, KW, PF, KVAH, KWh, V,
F, Phase shifts etc.

TECHNICAL ADVANCEMENTS AND ECONOMIC
SIGNIFICANCE
The system as described in the present invention has several technical advantages and economic significance including but not limited to the realization of:
• a reliable system for Automatic Meter Reading (AMR) for power utilities;
• a system for Automatic Meter Reading (AMR) that is not restrictive of the type of meter;
• a system for Automatic Meter Reading (AMR) that facilitates energy audit at intermediate levels;
• a system for Automatic Meter Reading (AMR) that is flexible;
• a system for Automatic Meter Reading (AMR) that is efficient; and
• a system for Automatic Meter Reading (AMR) that is secure.
The numerical values given for various physical parameters, dimensions and quantities are only approximate values and it is envisaged that the values higher than the numerical value assigned to the physical parameters, dimensions and quantities fall within the scope of the invention and the claims unless there is a statement in the specification to the contrary.

While considerable emphasis has been placed herein on the particular features of this invention, it will be appreciated that various modifications can be made, and that many changes can be made in the preferred embodiment without departing from the principles of the invention. These and other modifications in the nature of the invention or the preferred embodiments will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.

We Claim:
1. A system for Automatic Meter Reading (AMR) for a power utility comprising a source of power, feeding power to a plurality of distribution transformers (DT), each of the distribution transformers (DT) being adapted to distribute transformed power to a group of users respectively, said system comprising:
• a Meter Interface Unit (MIU) associated with each meter associated with each of the users of the group, said MIU adapted to read the meter reading of each meter and transmit the read meter reading;
• at least one Data Forwarder (DF) associated with a distribution transformer (DT), said DF being adapted to receive the transmitted meter reading from each of said MIUs within the group, said DF comprising:

- auditing means to audit the power supply with respect to the meter readings read from each meter within the group;
- computing means to compute power system parameters including power factor, line imbalance and per unit impedance;
- routing means to connect to other Data Forwarders (DF) associated with MIUs of other groups of users; and
- transmitting means to transmit the meter readings read from each of said meters and the audited power

supply along with the computed power system parameters;
• a central Data Center (DC) comprising:
- a Data Concentrator Computer (DCC) adapted to receive said meter readings and said audited power supply along with the computed power system parameters from said Data Forwarders (DF);
- a network of computers for managing said DC;
- wireless LAN / Ethernet connection means; and
- a Host Computer (HCDC) connected to said DCC and said network of computers through said connection means.
2. The system for Automatic Meter Reading (AMR) as claimed in claim 1,
wherein said Meter Interface Unit (MIU) comprises:
- a PCB retrofitted in said meter;
- a modem module;
- at least one power line coupler;
- a micro controller with external EEPROM and an spi port; and
- an AC to DC power converter.
3. The system for Automatic Meter Reading (AMR) as claimed in claim 1,
wherein said Data Forwarder (DF) comprises:
- a PLC modem module;

- a microprocessor module with at least two serial ports;
- a wireless spread spectrum module with serial interface integrated with said microprocessor module;
- a source of power supply; and
- a weather proof encasing adapted to house said DF,
4. The system for Automatic Meter Reading (AMR) as claimed in claim 1,
wherein said Data Concentrator Computer (DCC) comprises
- at least one networking port;
- storage means;
- a PLC modem module;
- a motherboard;
- a real time clock on said motherboard; and
- GSM / PSTN interface means for communicating data.

5. The system for Automatic Meter Reading (AMR) as claimed in claim 1, wherein said Data Forwarder (DF) is adapted to have a two way communication with said Data Concentrator Computer (DCC).
6. The system for Automatic Meter Reading (AMR) as claimed in claim 1, wherein said Data Concentrator Computer (DCC) is a low end configuration stand alone computer.
7. The system for Automatic Meter Reading (AMR) as claimed in claim 1, wherein said Host Computer (HCDC) is adapted to have at least Pentium 4 configuration.

8. The system for Automatic Meter Reading (AMR) as claimed in claim 1, wherein said Host Computer (HCDC) is adapted to have at least 64MB RAM and at least 30GB HDD.
9. A method for providing a system for Automatic Meter Reading (AMR) for a power utility comprising a source of power feeding power to a plurality of distribution transformers (DT), each of the distribution transformers (DT) distributing transformed power to a group of users respectively,
said method comprising the following steps:
• providing a Meter Interface Unit (MIU) for each meter associated with each of the users of the group;
• reading the meter reading of each meter;
• providing at least one Data Forwarder (DF) for each distribution transformer (DT);
• transmitting meter reading from each of said MIUs within the group to said Data Forwarder (DF);
• auditing the power supply with respect to the meter readings read from each meter within the group;
• computing power system parameters;
• connecting Data Forwarders (DF) associated with MIUs of different groups of users to each other;
• transmitting the meter readings read from each of said meters and the audited power supply along with computed power system parameters from said Data Forwarders (DF) to a Data Concentrator Computer (DCC); and

• receiving said meter readings and said audited power supply along with said computed power system parameters from said Data Forwarders (DF) at said Data Concentrator Computer (DCC) for further processing.
10. The method for providing a system for Automatic Meter Reading (AMR) for a power utility as claimed in claim 9, wherein the step of transmitting the meter readings read from each of said meters and said audited power supply along with said computed power system parameters from said Data Forwarders (DF) to a Data Concentrator Computer (DCC) includes receiving meter readings and the audited power supply from said Data Concentrator Computer (DCC).