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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.