Ami Project in Jordan (Edco Pilot Project

8/13/2019 Ami Project in Jordan (Edco Pilot Project

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E. FERAS AL-ASALI

Electrical Distribution Company

[email protected]


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Two communication media between meter andserver are applicable in our company EDCo

Jordan, The target is to discuss the advantages

and dis-advantages of using a such grid ofAMR/AMI based on a differentcommunication media :

GPRS

PLC


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Automated meter reading (AMR) technology dawned primarily between themid-'80s and early 1990s. In the beginning, there were three primary

options:

(1) walk-by/drive-by solutions.(2) one-way, inbound systems.(3) two-way, dial-up, phone-based solutions.

Walk-by/drive-by solutions are used still for AMR data collection whereradio frequency (RF) modules chirp their readings periodically and adevice, either handheld unit, picks up the data when nearby.

One-way, inbound systems involved programming meters to send inreadings at periodic ratestypically dailysometimes called bubble-upnetworks. These used consumer phone lines, radio technology or one-way, legacy power line carrier (PLC) signals transmitted over the utility's

distribution lines.Dial-up phone systems are straightforward and use a computer to dialmodems attached to electric meters, particularly at commercial accounts.A few of these solutions have evolved, allowing adequate data transferwith modern telephony technology, predominantly still used for smallbatches of meters rather than entire service territories.


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Utilities now look at the deployment ofAMR/AMI systems to reduce the operatingcosts, improve meter-reading accuracy,

eliminate manmade errors, and improveefficiency through demand management.

Advanced metering can be implemented withdifferent levels of intelligence associated to the

meter. Typically three types can bedistinguished, in order of increasing interactionlevel and feature contents.


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AMR(automated meter reading) is a remote reading system based on anadvanced technology that permits utilities to read electronic meters overlong distances. Through AMR, the energy consumption can be read on anannual, weekly, daily or on an hourly basis. Consumption and statusdata, such as time stamps, are through various connection media beingtransmitted to a central system for billing and analysis. The automatic

data collection enables billing based on real time consumption as opposedto an estimated consumption.

AMI(Advanced Metering Infrastructure) refers to systems that measure,read and analyses energy consumption. AMI systems can be defined asan extension of the simpler AMR-system. The AMI alwayscommunication two-way and comprises the whole range of metering

devices, software, communication media, and data management system.

AMM(automatic meter management) or smart metering is anotherexpansion of a remote reading system that includes the possibility ofperforming technical measurements and functions and carrying outcustomer-oriented services.


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Electrical meter: An electronic device thatmeasures the amount of electrical energy suppliedto a residence or business. It is electrically fed andcomposed of electronic controllers. It has an

interface which allows data to be transmitted fromthe remote terminal to the central device. Central office: Equipped with a system which

includes receivers, data concentrators, modems,and computers that are able to store and to process

received information. Communication system: A communication system

needs to be implemented in order to transmit dataand to control the different signals between theremote device and the central office.


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Highly Person dependent. Human errors cannot be avoided. Accessibility of meters in rural/ Agricultural zones.

Energy Audits performed based on bill collectionwhich is highly inaccurate.

Billing done mainly on estimated/ monthly averagebasis

Inability to monitor and control discrete loads Billing cycle requires excessive time. Meter data used only for billing, cannot help in

analysis like demand analysis, energy audit,pinpointing losses, etc.


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Real time Pricing: Customers are charged tariffs that vary over a shortperiod of time, hourly for example. It helps customers control theirconsumption and helps utility providers to better plan for the energymarket. Provide an in-depth study of the real time pricing.

Power quality measurement: The electric utility engineers need moredetailed readings than KWH so that they can efficiently plan the network

expansion and deliver a higher quality of supply. Power quality involvesthe measurement of voltage sags, swells, under and over voltages,harmonics distortion, voltage and current imbalances, and recordduration of each event.

Automated Billing: Once the metering data is available at the utilitycompany premises, billing, acknowledgement of received payments, andpower consumption reports can be fully automated and made availableto customers, on the web for example.

Load management: This is another industrial area that will be feasible

after having an AMR system in place. The service allows sending controlsignals to appliances such as air conditioners, and heaters.


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Remote Connect/Disconnect: The utility providercan remotely and quickly configure the meter toenable or disable energy to certain customers.

Outage notification: This offers an effective way to

improving response time. Liu et al. propose analgorithm that involves two steps: outage locatingand outage confirmation through meter polling.

What AMR/AMI can offer is not limited to what havebeen mentioned in above. Generally, with a twocommunication medias , definitely enables manysophisticated services . AMR/AMI networkreliability will be discussed a head


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The beginning of smart meters application was anAMR with PLC which had took a placesuccessfully in our company EDCo as a pilotproject. With the load growth, high losses had

been noticed in our electrical grid of certain areas.An experimental sample -Jordanian village- was

chosen where the losses exceeds 60%, the pilotproject of (250) single phase meter, (20) three phase

meter and (2) three phase meter CT operated.EDCo diced to use Power Line Carrier (PLC) forcommunication purpose to reduce any capital oroperational cost for this pilot project.


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Meter Built-in PLC Module

Meter communicate with Concentrator directly

Concentrator communicate with Master Station


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PLC System advantages :

By using existing cable infrastructure PLC systemeliminates the need for installation andmaintenance of dedicated communication links.Already every building or household is connectedto the electrical power grid and moreover; everyroom has power line contact points installed.Without doubt the extent of this existing

infrastructure cannot be matched by any othertelecommunication technologies that are availabletoday and PLC have many international standardDLMS, IEC.


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As the electric power distribution lines were notoriginally designed for communication purposes as aresult they exhibit highly variable and unpredictablelevels of channel noise, signal attenuation anddistortion

Noise and disturbances (Major Obstacle):Common causes of noise on the high voltage electrical

power networks include corona discharge, powerfactor correction banks and circuit breaker operation.On the low voltage network, much of this noise is

filtered by distribution transformers, so the mostcommon interference in low voltage domesticnetworks can be attributed to the various householddevices and office equipment connected to thenetwork.


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In our project PLC system with about 200 PLC meters, ittakes more than 24 Hours to read all the data andsometimes we dont get any reading from some

meters (10-12%).


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A hazard area on the Jordan Valley itself where the losses exceeded

75%; the regular meters were hanged up on the top of powertransformers suspended to a wooden pole. And this procedurewas temporarily taken to avoid customers easy reach andtampering (see Figure in next slide)

Despite of the above solution, it becomes also very difficult to retrieve

the required data without transformers switching off. EDCodecided to use AMI system to settle down this case through thepilot project with AMI & GPRS reducing all risks of PLC.

For the target project, (95) single phase meter, (225) three phase meterand (60) three phase meter with CT operated were used supported

by AMI & GPRS.The price of AMI system is still at a level where itusually cannot be applied widely to all customers. The price ofAMI is mainly determined by the costs of the hardware, theinstallation and the communication infrastructure and the runningcost. The cost issue plays a key factor in replacing traditionalmetering system with AMI system.


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Meter Built-in GPRS Module.

Communication area (GPRS with SIM card).

The master system

Customer interface unit.


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Highspeed.

Unlimited transmission range.

GPRS is very suitable for power applications.

Low capital cost where we dont needConsecrator for data collection nor licenses

when comparing with RF technology.


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Covering GPRS network area depends onMobile phone operator.

Wireless communication method such as GPRS

high operational costs especially for a long runprojects


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Table (1) provides a summary of the attributesreach ability, costs, operator, flexibility,reliability and suitability for advanced

metering applications for the differentcommunication means discussed above.


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Despite of some notes against AMI applicationand communication media operational costs

especially on the third world area, its highlyexpected to overcome all obstacles in thecoming years.

Once the communication media through GPRSare being settled down , AMI system will be aworldwide application.


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Ami Project in Jordan (Edco Pilot Project

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