The document discusses Power Line Carrier Communication (PLCC) technology used in the Chhattisgarh State Power Transmission Company in India. PLCC uses carrier currents between 80-500 kHz to enable speech, data, and power line transmission for telemetry and telecontrol. Key components of a PLCC system include transmitters, receivers, hybrids, filters, line matching units, wave traps, power amplifiers and coupling capacitors. PLCC provides communication between substations and allows sending and receiving data through existing power cables to control and retrieve information from electronic devices.

1. Power Line Carrier
Communication (Chhattisgarh
State Power Transmission
Co.Ltd.)

2. Introduction of CSEB
Chhattisgarh State Power Generation Company
Limited (CSPGCL) is the electricity generation company of
the Government of Chhattisgarh state in India. Chhattisgarh State
Electricity Board was formed in accordance with the Section 5 of
the Electricity SupplyAct 1948 as per the Notification published in
the gazette of the Government of Chhattisgarh dated 15
November 2000.
Chhattisgarh State Electricity Board has been reorganized into five
companies in accordance with the provisions contained in the
Section 131-134 of Electricity Act 2003 by the Govt. of Chhattisgarh.
Thus Chhattisgarh State Power Generation Company
Limited became functional w.e.f. 01.01.2009.[2]

3. Introduction about PLCC Panels
Power LineCarrier Communication, often called PLCC, is used for
speech data transmission as well as protection ofTransmission
Lines.Carrier current used for Power Line carrier Communication
has a frequency range of 80 to 500 kHz. PLCC is mainly for
telemetry and telecontrol in modern electrical Power System.
For communication between the two substations, each end of
transmission line is provided with identical PLCC equipment
consisting of equipment:
■ Transmitters and Receivers
■ Hybrids and Filters
■ Line Matching Unit
■ WaveTraps
■ PowerAmplifier
■ CouplingCapacitors

5. Working Of PLCC System

6. Ground-Phase Coupling

7. Phase-Phase Coupling

8. How Power Line Communication takes
place?
Power LineCommunication (PLC) is a communication technology
that enables sending data over existing power cables.This means
that, with just power cables running to an electronic device (for
example) one can both power it up and at the same time
control/retrieve data from it in a half-duplex manner.There is
another way to classify Power Line Communication and that is:
1. PLC over AC lines
2. PLC over DC lines
While most companies are currently geared towards providingAC-
PLC solutions, PLC in DC lines also has applications.Two such
applications are PLC over the DC-bus in distributed energy
generation, and PLC in transportation (electronic controls in
airplanes, automobiles and trains).This use reduces wiring
complexity, weight, and ultimately cost of communications inside
vehicles. However, in this article, we will be dealing mostly with
narrowband PLC over AC lines.

9. Main Components of PLCC:
■ Coupling Capacitor:
Coupling capacitor connects the carrier equipment to the
transmission line.Thus coupling capacitor allows carrier frequency
signal to enter the carrier equipment.

10. • WaveTrap:
WaveTrap is provided in the line after the CVT (If we see fromTransmission line side
then CVT will come first and then CVT will come.).WaveTrap is nothing but a Choke
Coil which chokes out high frequency carrier signal, as the impedance offered by
inductor = wL will be high which will not allow the high frequency carrier signal to enter
into the substation.

11. Equipments Used In PLCC

12. Application of PLCC:
■ Transmission & Distribution Network: PLCC was
first adopted in the electrical transmission and
distribution system to transmit information at a fast
rate.
■ Telecommunication: Data transmission for different
types of communications like telephonic
communication, audio, video communication can
be made with the use of PLCC technology.
■ Security Systems: In monitoring houses or
businesses through surveilance cameras, PLCC
technology is far useful.

13. Limitations of PLCC
■ Power line communication is limited by the existing electrical
infrastructure where it is being employed and thus affects
powerline channel parameters such as power attenuation,
noise, impedance and bandwidth.
■ It requires high SNR ratio.
■ The power line network is usually not matched and varies with
time at different loadings.This leads to attenuation of carrier
power.This is the main disadvantage.
■ The carrier frequency suffers reflection losses at various points
in its path from transmitter, coaxial cable, line tuner unit,
coupling capacitor, power line to transmitter.
■ Power-line communication is not secure.

14. ThankYou!!!