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Cost 286 Wroclav 17-18/09/20031/27 Budapest University of Technology and Economics Faculty of Electrical Engineering and Informatics Department of Electric Power Engineering Power Systems and Environment Group György VARJÚ, professor János LÖCHER, PhD student
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Cost 286 Wroclav 17-18/09/20032/27 Introduction PLT application in open wire insulated LV power line Laboratory investigations - Presenting of our PLT Laboratory - Laboratory tests - Used disturbance sources - Conclusions - “Some Strange Result” - Introducing used PLT devices
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Cost 286 Wroclav 17-18/09/20033/27 Devices (1/4): CPE (modems) Properties: 45/36 Mbps data transfer rate up to 400 m coverage Ethernet & USB connection Configurable via SNMP Data and VOIP services Ilevo CPE LR 100
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Cost 286 Wroclav 17-18/09/20034/27 Devices (2/4): TPE Properties: 45/36 Mbps data transfer rate up to 400 m coverage up to 63 CPE’s or IR’s Ethernet & RS232 connection Configurable via SNMP Data and VOIP services Ilevo CPE LR 1000
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Cost 286 Wroclav 17-18/09/20035/27 Devices (3/4): Repeater Properties: 45/36 Mbps data transfer rate up to 400 m coverage up to 63 client CPE’s Ethernet & RS232 connection Configurable via SNMP Data and VOIP services Ilevo CPE LR 1100
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Cost 286 Wroclav 17-18/09/20036/27 Devices (4/4): Common features OFDM modulation max. 768 carrier downstream max. 512 carrier upstream Programmable carrier power profile Continuous channel SNR monitoring Adaptive bit rate adjustment 4 frequency bands: 2-4.5 MHz 5.6-8.1 MHz 10-12.5 MHz 15-17.5 MHz Based on DS2 technology
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Cost 286 Wroclav 17-18/09/20037/27 Laboratory (1/4) Rack system: Four layered vertical rack system with spacing 40 cm Rectangular layout, perimeter 30 m each 14 winds 4x95+25mm 2 AASC cable (420 m full length) Both-end access at the measuring room Accessible at each corner for connection
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Cost 286 Wroclav 17-18/09/20038/27 Laboratory (2/4) Rack system Corners
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Cost 286 Wroclav 17-18/09/20039/27 Laboratory (3/4) Connections
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Cost 286 Wroclav 17-18/09/200310/27 Laboratory (4/4)
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Cost 286 Wroclav 17-18/09/200311/27 Source of disturbance - 3phase fluorescent lamps - Drill with speed regulator - Compact fluorescent lamps (1phase) - Normal incandescent lamps with dimmer
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Cost 286 Wroclav 17-18/09/200312/27 Measurement Configuration (1) TPE - Repeater path Cable length: 420 m Signal injection: Phase - Neutral Signal detection:Phase - Neutral
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Cost 286 Wroclav 17-18/09/200313/27 Measurement Configuration (1) Results: Upload: 694 kByte/s @ 16 MHz Download: 418 kByte/s @ 11 MHz Upload: 285 kByte/s @ 11 MHz Download: 446 kByte/s @ 16 MHz
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Cost 286 Wroclav 17-18/09/200314/27 Measurement Configuration (2) TPE - Repeater - CPE path Cable length:420 m Signal injection: Phase - Neutral Signal detection: Phase - Neutral
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Cost 286 Wroclav 17-18/09/200315/27 Measurement Configuration (2) Results: Upload: 359 kByte/s @ 16/7 MHz Download: 174 kByte/s @ 11/3 MHz Upload: 213 kByte/s @ 11/3 MHz Download: 162 kByte/s @ 16/7 MHz
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Cost 286 Wroclav 17-18/09/200316/27 Measurement Configuration (3) TPE - Repeater - CPE path Cable length: 420 + 30 m Signal injection: Phase - Phase Signal detection: Phase - Neutral
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Cost 286 Wroclav 17-18/09/200317/27 Measurement Configuration (3) Results: Upload: 792 kByte/s @ 16/7 MHz Download: 173 kByte/s @ 11/3 MHz Upload: 306 kByte/s @ 11/3 MHz Download: 175 kByte/s @ 16/7 MHz
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Cost 286 Wroclav 17-18/09/200318/27 Some geography First written record from 1229. Area: 48,5 km 2 (include agricultural) Population: 1200
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Cost 286 Wroclav 17-18/09/200319/27 Pictures from Bárdudvarnok
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Cost 286 Wroclav 17-18/09/200320/27 Bárdudvarnok
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Cost 286 Wroclav 17-18/09/200321/27 Measurement Configuration (4) U: 501 kByte/s D: 234 kByte/s U: 193 kByte/s D: 200 kByte/s U: 230 kByte/s D: 148 kByte/s U: 526 kByte/s D: 330 kByte/s U: 11 MHZ D: 16 MHz
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Cost 286 Wroclav 17-18/09/200322/27 Conclusions These devices worked well during laboratory tests The real net behaviour is unknown More tests are needed, focused especially on capacitor banks for reactive power compensation
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Cost 286 Wroclav 17-18/09/200323/27 Strange Result During the tests we have experienced some strange things, and we examined their source This is not belonging to the normal PLT operation, but it was worthy to investigate them.
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Cost 286 Wroclav 17-18/09/200324/27 „Wireless” PLT 20dB @ 7MHz 25dB @ 16MHZ 30dB @ 3MHz 40dB @ 11MHZ Attenuation Upload: 340 kByte/s @ 3MHz Download: 550 kByte/s @ 7MHz Upload: 520 kByte/s @ 11MHz Download: 766 kByte/s @ 16MHz
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Cost 286 Wroclav 17-18/09/200325/27 Disturbance of CF lamps (1/2) Conducted disturbances Test with two class of compact fluorescent lamps: - Low quality (cheap) lamps stopped the communication, although all of them have CE sign - High quality (more expensive) lamps never produced this effect)
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Cost 286 Wroclav 17-18/09/200326/27 Disturbance of CF lamps (2/2)
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Cost 286 Wroclav 17-18/09/200327/27 Thank you for your attention! Any questions?
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