The document discusses troubleshooting of a power line carrier (PLC) module for a transmission line in Singkawang-Senggiring, Indonesia. It describes malfunctions in the power supply and high frequency power amplifier modules. Issues included defective components like transistors and logic gates. Replacement of faulty components and addition of fuses addressed the problems. Simulation software helped identify operating currents to guide troubleshooting. Overall, a trial and error approach successfully resolved the issues.

1. TROUBLESHOOTING ON SENGGIRING-
SINGKAWANG POWER LINE CARRIER
MODULE WITH REALTIME MEASUREMENT
AND ELECTRONIC SIMULATOR
Hariadi Aji
(hariadi.aji@pln.co.id)
Rishan, Tribagja Manoptika, Dora Karuniawati, Anang
Hardoyo
PT PLN (Persero) APDP Kalimantan Barat
Indonesia
1
hariadi.aji@pln.co.id cepsi2012bali

2. INTRODUCTION
• HV transmission lines is vital scheme for
power system
• Teleprotection using HV transmission lines
using PLC
• Lightning surges may harm HV
transmission lines / even the electronic
components
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3. Power Line Carrier Communication
• Figure 1. Power Line Carrier Communication System [1]
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4. THE MALFUNCTION OF SENGGIRING-
SINGKAWANG PLC MODULE
Table 1. PLC 1790/B
equipment [3]
Figure 2. PLC 1790/B Layout
and LED alarm’s mapping[3]
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5. THE MALFUNCTION OF SENGGIRING-
SINGKAWANG PLC MODULE
• Figure 3. PLC 1790/B Photo shoot about LED alarm occurred when
the modules were malfunctioned
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6. THE ALIM CARD (POWER SUPPLY
MODULE) TROUBLESHOOTING
• Based on Switching Mode Power Supply (SMPS)
• All of the power output level were off
• Replacement of the oscillator Circuit (logic NOT)
– Made the output +_ 15V, +_ 5V, level appear
• Rewinding of the transformer
– Made the -36 volts level appear
• The addition of fuse on every level
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7. THE ALIM CARD (POWER SUPPLY
MODULE) TROUBLESHOOTING
• Figure 5 Basic switched mode power supply block
diagram [6]
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8. THE 20 WATTS HFPA MODULE
TROUBLESHOOTING
• High Frequency Power Amplifier
• Based on Differential Amplifier [7]
• Examination on every components : Some transistor
were on leakage current between C-E
• Replacement on substitute component of D44H11
• PLC test on site : only success 2 minutes
• The Breakdown of 3 Amperes fuse on -36 Volts SMPS :
the circuit still on damaged condition
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9. THE 20 WATTS HFPA MODULE
TROUBLESHOOTING
• Figure 6. HFPA module block diagram [3]
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10. THE 20 WATTS HFPA MODULE
TROUBLESHOOTING
• The creation of schematic and undergo simulation , find
the operating currents : about 0.34 amperes
• Replacement on identical component of all MPQ2222,
2N2219A, D44H11 transistors
• Trial on site
• Success. Alarm LED was off.
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11. THE 20 WATTS HFPA MODULE
TROUBLESHOOTING
• Figure 7 Electronic Schematic Simulator of 20Watts
HFPA using Proteus ISIS
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12. RESULT
• Power Supply Module problems : MOSFET, NOT logic,
winding of transformer
• HFPA Module problems : MPQ2222 2N2219A, D44H11
• Addition of Power Supply Fuse (3 Ampere)
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13. CONCLUSION
• Troubleshooting with trial and errors success
• Trial and Error take a consideration of Operating Current
• If The Operating Current goes far above the simulation, it
means there is still any breakdown
• The internal fuse addition of every output voltage level is
a last attempt of electronic components protection
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14. REFERENCES
• [1] Zoro, Dr. Reynaldo (2011) Fenomena Petir Tropis, Kerusakan, Sistem Proteksi
dan Deteksi Sambaran Petir, Seminar Sehari Dampak Petir terhadap Jaringan
Listrik, January 26, Medan, Indonesia.
• [2] Dobson,H.I., J.W. Hagge, W.P. Bartley, S.J. Bogdanowicz, L.H. Brookes, T.J.
Comerford.(1979) IEEE Guide for Power Line Carrier Applications. Power System
Communications Committee of the IEEE Power Engineering Society, March 15
• [3] PLC 1790/B Technical Manual, TecniCom, Italy, 2002
• [4] Mohan, Undeland, Robbins (2003) Power Electronics, John Wiley & Sons Inc,
third edition. New York.
• [5] Rashid (2003) Power Electronics – Circuits, Devices and Applications,. Prentice
Hall Inc, third edition.
• [6] Philips Semiconductor. Power Semiconductor Applications.
http://www.nxp.com/documents/application_note/APPCHP2.pdf. (accessed : 30
August 2012)
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15. REFERENCES
• [7] Sedra and Smith (1998) Microelectronic Circuits,Oxford University Press 4 th ed,
New York.
• [8] Irwan, Sani bin MD Salim (2008). http://www.utem.edu.my/myweb/sani/pdf/
quickguide_proteus.pdf, FKEKK, UteM.
• [9] Noordin, Aminurrashid, Mohd Hanif Che Hasan, Mohd Razali Muhamad Sapiee,
Sulaiman Sabikan, 2011, Proteus Professional Design, FKE UTeM
• [10] Kadarisman, Pribadi. PT PLN (Persero) Jasa Sertifikasi LMK (retired).
Laboratorium Street, Duren Tiga, South Jakarta 12760, Indonesia. (Personal
Communication)
• [11] Motorola (1996) .Quad General Purpose Transistors: NPN Silicon, MPQ2222
datasheet.
• [12] STMicroelectronics (1999) High Speed Switches, 2N2219A datasheet.
• [13] STMicroelectronics (2002) NPN Silicon Power Transistors. D44H11 datasheet.
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16. THANK YOU
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