transmission of data over electric power lines

8/3/2019 TRANSMISSION OF DATA OVER ELECTRIC POWER LINES

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B. Ashok Varma EE200117337

Transmission of Data Over Electric Power Lines

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TRANSMISSION OF DATA OVER

ELECTRIC POWER LINES

A Technical Seminar

by

B. Ashok varma EE200117337

Under the guidance of:

Mr. Debasish Jena


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INTRODUCTION

Power Line Telecommunications (PLT)

aims at the utilization of the electricity power lines for

the transmission of data

gains importance that every building is connected to the

power grid that cannot be matched by either the

telecommunications or cable TV wiring

provides new services to the users, which are difficult to

implement by other technologies, e.g., remote electricity

meter reading, broadband over internet and many


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Hybrid Information Society local access infrastructureincluding PLT Technology


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RELEVANCE OF PLTThe power grid

Is ubiquitous

offers last-mile connectivitysupports information-based services with stronggrowth potential

Is already in place, thus enhancing cost-effectiveness

Three main categories of new ICT-basedapplications --Energy Services, Telecommunication

services,A New category of value-added customerservices


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Comparison between PLT and other relevant technologies


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WHY LIMITED EXPLOITATION?

PLT technology is young and still evolving; its capabilitiesstill need expansion

There is a lack of standardization and interoperability ofPLT-relevant products

commercial incentives to exploit such a telecom

infrastructure as PLT not yet been clear

Increased PLT transfer speed and reliability


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BROADBAND OVER POWER LINES

Broadband over power lines (BPL)

Can plug the computer into any electrical outlet in the

home, instantly have access to high-speed Internet

Tested in several cities around the United States and the

United Kingdom

Two types of BPL service In-House BPL

Access BPL


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BROADBAND TO HOME

electricity and the RF used to transmit data vibrate at certain

frequencies

If electricity spikes at a frequency that is the same as the RF

then it will cancel out that signal and the data transmission

will be damaged en route

BPL bypasses this problem by using medium-voltage lines --

the data can only travel so far before it degrades


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BROADBAND TO HOME

special devices installed called repeaters take in the data and

repeat it in a new transmission, amplifying it for the next

journey

CT coupler allows the data on the line to bypass transformers

Transformer's job is to reduce the 7,200 volts down to the

240-volt standard

some carry the signal in with the electricity on the power line,

while others put wireless links on the poles and send the

data wirelessly into homes


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PROBLEMS FOR PLT USERS

could cause malfunctions of your electrical equipment,

such as battery chargers, audio-video systems

causes interference to important radio services, the user

might be held responsible for the damage

Since all users share the same physical access, data

sniffing can be done and security is a problem

achievable bandwidth and download rate is significantly

lower than customers expect

To receive telecommunication services and energy from

the same company will create a dangerous new monopoly


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RECENT DEVELOPMENTS

More work required in the area of PLT hardware product

development, production of appropriate standards and new

software applications

improvements both in terms of capabilities (speed,reliability), investment and exploitation costs,

interoperability

wide range of advanced software application in need of

further investigations and field tests

A number of associated regulatory and standardization

problems for commercialization


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CONCLUSION

PLTopens up new opportunities for the mass provision of local,

last-mile access at a reasonable cost

offers a permanent on-line connection, as symmetric, two-

way communication, has good performance, very goodgeographical coverage, relatively cheap

Faces problems -- PLT as a provider of the local accessinfrastructure,PLT-based development of applications and

services

play a significant role as a provider of necessary InformationSociety local infrastructure


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REFERENCES

www.howstuffworks.com

www.metering.com

www.wikepedia.org


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THANK YOU!!!

transmission of data over electric power lines

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