Electronic Engineering DepartmentFaculty of Engineering

Sudan university of Science and Technology

Power Line Communication SystemBy

Ahmed Ali Mohamed Hassan Anas Al-Monzer Mohamed SalawiMohamed Faisal Fadul Abu Sara Mohamed Hafiz Elsheikh Elzaki

Mohamed Omer Taha Ginawi

Supervised byYasser Al-Obaid

Submitted in fulfillment of the requirement of B.Sc. Degree in Electronic Engineering (comm/comp)

August 2010

• Power Line Communication is the usage of electrical power supply networks for communications purposes.

• No additional wire network .• Low cost.• Various applications.• Existing infrastructure in rural areas.

• The power line networks are not designed for Data communication.

• PLC has some impairments:– High attenuation.– Significant potential interference.– Noise which is generated from all loads

connected to the grid.

• Applying efficient modulation scheme for PLC environment , (OFDM) .

• Optimize the physical topological design of PLC network by efficient modes.

• Applying encoding technique to achieve high-data rates and reduce the noise.

OFDM is based on the concept of frequency-division multiplexing (FDM), the method of transmitting multiple data streams over a Power line medium.

InterleavingFEC

InterleavingFEC MappingMapping IFFTIFFT Up

convertingUp

converting

CouplingCoupling

couplingcoupling

Downconverting

Downconverting FFTFFT De-mappingDe-mapping De-interleaving

FEC decodingDe-interleavingFEC decoding

Channel equalization

Channel equalizationSynchronizationSynchronization

Power Line Channel

OFDM Transmitter

OFDM Receiver

Tran

smitt

ed D

ata

Received Data

• Automatically collecting consumption, diagnostic, and status data.

• Transferring that data to a central database.• For billing, troubleshooting, and analyzing.• AMR SYSTEM COMPONENTS:– Meter Interface Module.– Communication System(PLC).– central control unit .

AMR system structure model

Simulation of a simple PLC system consists of two computers connected together by two PLC modems and one power line.

• Simulation Environment

• In spite of harsh environment of Power line channel the OFDM technique proved it’s ability to deliver data with high data rates and low error rate.

• It’s highly recommended:– To apply the concept of the smart grid to support PLC

applications and to reach more high data rates.

– To improve the security environment in PLC networks by applying reliable authentication and encryption methods.