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Power line carrier communication(with awesome animation work)

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Power line carrier communication(with awesome animation work)

  1. 1. POWER LINE CARRIER COMMUNICATION PRESENTED BY MOHIT AGARWAL CGI/ECE/ 7TH SEM/15
  2. 2. INDEX • TRAINING OVERVIEW • INTRODUCTION • BASIC PRINCIPAL OF PLCC • SIGNALS FOR PLCC • COMPONENTS • PLCC STATION • BLOCK DIAGRAM OF CIRCUIT • BASIC COUPLING ARRANGEMENT • MAINTAINENCE AND FAULT TRACKING • ADVANTAGE • LIMITATIONS • CONCLUSION
  3. 3. TRAINING OVERVIEW  Name Of Industry : Rajasthan Rajya Vidyut Prasaran Nigam Limited  Location: 220KV GSS PREMISES, RIICO INDUSTRIAL AREA, BHARATPUR  Reporting Officer: A. K. MITTAL  Duration of training : 3rd June to 18th July, 2014  Department of training :Electronics & Communication
  4. 4. INTRODUCTION  PLCC is the method of transmitting information using power network.  Its equipment are used for point-to-point communication over high voltage power lines  It’s equipments are used to send/receive speech/data/teleprotection signals.  It’s the most economical and reliable method of communication for medium or long distance.
  5. 5. BASIC PRINCIPAL OF PLCC  The telephone communication system cannot be directly connected to the high voltage lines so, we use suitably designed coupling devices for communication.  These usually consist of high voltage capacitor used in conjunction with suitable line matching unit (LMU) for matching the impedance of line to that of the coaxial cable connecting the unit to the PLC transmiter-receiver equipment.
  6. 6. SIGNALS FOR PLCC The signal that can be transmitted over the PLCC include  Speech signal (300-2000Hz )  Data signal (2000-3000Hz)
  7. 7. Components • PLCC station • Line matching Unit • CVT/CC • Earth Switch • Lightening Arrestor • Wave Trap • Co axial Cable 7 EPAX RF carrier (40-500kHz) Power Line (50Hz) C.C RTU L.T PLCC TERMINAL
  8. 8. PLCC station • It is the station where (modulation)Transmission , Receiving (Demodulation ) , Amplification and Filtration are performed. • Transmitter : 8
  9. 9. Receiver :
  10. 10. CVT/CC • It is Control Voltage transformer/ Coupling capacitor. • This is used for blocking the high voltage entering to the PLCC equipment. Earth Switch • This is used at the time of maintenance of LMU.
  11. 11. Lightening Arrestor • Used to protect the system from the damaging effect of lightening. • It works as an insulator between light and the power line. Co axial Cable • This is used for inter connection between PLCC & L.M.U for carrying the high frequency signal.
  12. 12. Line Matching Unit The out-put of PLCC is connected to the matching unit before the power lines to achieve the proper impedance matching and protection in between PLCC Equipments and power line. Module Cabinet
  13. 13. Wave Trap • Consists of a number choke coils connected in series. • It is connected in series with the power line and prevents carrier current from entering to the power equipment. • Offer negligible impedance to power frequency & high impedance to carrier frequency. PLC signal Blocking HV Line Substation Power energy PLC Signal
  14. 14. Block diagram 0f Circuit
  15. 15. BASIC COUPLING ARRANGEMENT  The power frequency and radio frequency currents are sorted by this arrangement .  Carrier currents are prevented to enter station bus by wave trap & power frequency current is blocked by coupling capacitor, from the PLC equipment.  Hence we get power current at the bus & carrier current at PLC equipment.
  16. 16. BATTERY CHARGER • PLCC work on rectified AC or main supply, when supply goes off, we make use of a device for proper functioning of PLCC called battery charger. • This is the device that provide supply to the PLCC equipment for uninterrupted working. • It provide DC to the panel by battery. 16
  17. 17. Maintenance & Fault Tracking • FAULT ANALYSIS In fault analysis the faulty devices are checked in this serial or manner:- 1. Telephone or tale operation signal 2. Cabling low frequency circuit or DC power supply 3. PLC equipment 4. HF transmission path
  18. 18. MAINTAINANCE AND FAULT TRACING PROCEDURE 1. The control circuit boards should be inserted far firmly. 2. The charger should be switch off once in every month. 3. The battery terminal should be connected first and the AC input after that. 4. All mounting bolts should be checked before energizing.
  19. 19. Advantages  No separate wires are needed for communication purpose.  Both communication and power transfer can be possible on same circuit.  Power lines provides the shortest route between the power station.  Increased reliability.  Lower attenuation over long distance.  Implementation cost is reduced.
  20. 20. Limitations  Reflection are produced on spur lines connected to high voltage line. This increased attenuation and create other problem.  High voltage lines have transformer connections, which attenuate carrier currents.  Noise introduced by power lines is far more than in case of telephone lines.
  21. 21. Key learning • PLCC is mainly used for telecommunication, tele-protection and tele-monitoring between electrical substations through power lines. • In a PLCC system the communication is established through the power line. • The carrier frequency range is allocated to include the audio signal, protection and the pilot frequency.
  22. 22. CONCLUSION The Training was based on communication over existing power line.
  23. 23. ANY QUERIES ?

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