This document proposes a solution for remotely detecting illegal electricity usage through power line communications. It describes using PLC modems connected to energy meters to transmit meter data and detect discrepancies that would indicate illegal loads. The system is examined through laboratory simulations that show how measurements vary with transmission distance and load impedance. Once tested on real power lines, the system could effectively reduce distribution losses in India.

1. A Solution to Remote Detection of Illegal
Electricity
Usage via Power Line Communications
M.R. Rahul Raj
M. Nithin Mohan
(B-TECH FINAL YR)

2. PLC’S:
 Power Lines, originally devised to transmit
electricity from some sources to many
sinks
 Power Lines can be used for transmission
of power as well as communication i.e., data
is modulated on a carrier frequency and
sent over

3. Layout Of A PLC

4. Building Blocks
AMR:
Translating readings from rotating
meter dials into digital form is necessary
Electromechanical movement to digital
signal conversion

5. Main components of AMR system
1.Meter interface module
2. Communications systems
3. Central office systems equipment

6. PLC’s and AMR…
 AMR-important application as every user
connected each other via power lines. In
this power network, every user connected
to each other via modems with data
originating from the remote meter or
central station

7. Detection and Control System
PLC signaling is only valid
over the low voltage VAC
power lines
PLC signaling must be in
CENELEC standards
PLC1A….PLCNA are PLC
Modems and used for AMR
(Subscribers Location)
PLC1B….PLCNB are Energy
Meter Chips of detector
(Connection Points)
Schematic illustration of detection system of illegal
electricity usage

8. Detection and Control System
(contd…..)
Proposed detector
system has two
recorded energy data
in host PLC unit, one,
which comes from the
AMR-PLC, and the
other, which comes
from the PLC modem
at the connection
points
An Error s/g is
generated indicating
illegal load Usage
Schematic illustration of detection system of
Subscriber Address illegal electricity usage
and Error s/g-
Combined-sent to

9. System simulation and modeling of the detection system of illegal
electricity usage for electromechanical kilowatt-hour meters

10. Results
Effects of distance of the source- Bit-error probability with frequency
receiver on the loss for various Cases and load impedance for 1000-m
Results and the variations of the measurements are
shown in above Figs.

11. Conclusion
 The
Proposed Detector System is
Examined in Laboratory Conditions
 Once this proposed detection systems are
tried in real power lines, the distribution
losses in India can be reduced effectively.

12. Bibliography
 I. H. Cavdar, “A Solution to Remote Detection of …”
IEEE Transactions on power delivery, Vol. 19..
 I. H. Cavdar, “Performance analysis of FSK power line
communications systems over the time-varying
channels: Measurements and modeling,” IEEE Trans.
Power Delivery, vol. 19, pp. 111–117, Jan. 2004.
 Yoshinori Mizugai and Masahiro Oya “World Trends in
Power Line Communications” Mitsubishi Electric
 Tom D Tamar kin “Automatic Meter Reading”, Public
Power magazine Volume50, Number5 September-
October 1992.