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POWER LINE COMMUNICATION: A new horizon in broadband communication . COMPILED BY: SARADENDU KARMAKAR ROLL NO.: 07/EE/15 SEC: A DEPT. OF ELECTRICAL ENGINEERING, NIT DURGAPUR. TOPICS OF DISCUSSION. BROADBAND: A REVIEW BROADBAND OVER POWER LINE TYPES OF PLC PLC: A TECHNICAL OVERVIEW
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COMPILED BY: SARADENDU KARMAKAR
ROLL NO.: 07/EE/15
DEPT. OF ELECTRICAL ENGINEERING,NIT DURGAPUR
Broadband refers to a telecommunication signal of greater bandwidth, than another standard or usual signal.
Internet broadband lines are mainly provided by, telecommunication companies, over existing DSL lines, or cable TV networks.
The DSL lines may not be able to handle the enormous increase in the internet traffic volume.
The existing problem with infrastructure, can be overcome, by use of the power lines, for data transfer. This is known as “Power line Communication” or “Broadband over Power Line”.
It is cheap and convenient, as it uses the existing network, which is both widespread and capable of wide bandwidth.
Access PLC: This uses electrical distribution lines, overhead or underground, to provide broadband Internet access to homes and businesses.
Control PLC : This operates below 500 kHz, and is used by electric-utility companies to control their equipment using the power-lines as transmission lines.
PLC works by transmitting high frequency data signals through the same power cable network used for carrying electrical power to household users.
Digital Powerline use a network, known as a High Frequency Conditioned Power Network(HFCPN), to transmit data and electrical signals.
The isolator is generally connected to an electronic package (an injector or an isolator).This is a combination Isolator and Electronics package. The Electronics package can be an Injector or Repeater.
The Digital Powerline base station is a standard rack mountable system designed specifically for current street electricity cabinets.
This option reduces local loop fees, but increases hardware costs.
These lines could be fiber, ATM, or broadband coaxial cable. This option avoids local loop fees, but is beset by equipment fees.
The CU uses band pass filters to segregate the electricity and data signals, which facilitate the link between a customer’s premise and an electricity substation.
The service unit is a wall or table mountable multi-purpose data communications box. The unit facilitates data connections via connectors to cable modems and telephone connections via standard line termination jacks. The service unit provides its own line power for ringing and contains a battery backup in case of power outage.4.3. Service Unit
PLC offers end-users a broad spectrum of applications and services including broadband Internet access, voice over IP, multimedia services, telecommunication, home automation and energy management(near energy services).5. APPLICATION AREAS OF POWERLINE COMMUNICATIONS
Home plug networking is an attempt to integrate home appliances such as TV’s Refrigerators, Computers,etc., via the home electrical network.
Smart grid technology, uses the same principle to connect this devices, centrally to an enormous intelligent system, which can greatly increase the efficiency of modern power grids.
Near energy services are defined as energy services with in the confines of current business which ads new forms, features and scales.
Trends in both the electric and telecommunications industry have lead to a climate where PLC should be a big player.
Also, digital Power line offers a deregulated utility several options and advantages.
BPL is an exciting emerging technology, for broadband communication, and data services.
However, it has some problems regarding widespread implementation.