Cost 286 Wroclav 17-18/09/20031/27 Budapest University of Technology and Economics Faculty of Electrical Engineering and Informatics Department of Electric.

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Presentation transcript:

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

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

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

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

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

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: MHz MHz MHz MHz Based on DS2 technology

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

Cost 286 Wroclav 17-18/09/20038/27 Laboratory (2/4) Rack system Corners

Cost 286 Wroclav 17-18/09/20039/27 Laboratory (3/4) Connections

Cost 286 Wroclav 17-18/09/200310/27 Laboratory (4/4)

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

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

Cost 286 Wroclav 17-18/09/200313/27 Measurement Configuration (1) Results: Upload: MHz Download: MHz Upload: MHz Download: MHz

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

Cost 286 Wroclav 17-18/09/200315/27 Measurement Configuration (2) Results: Upload: /7 MHz Download: /3 MHz Upload: /3 MHz Download: /7 MHz

Cost 286 Wroclav 17-18/09/200316/27 Measurement Configuration (3) TPE - Repeater - CPE path Cable length: m Signal injection: Phase - Phase Signal detection: Phase - Neutral

Cost 286 Wroclav 17-18/09/200317/27 Measurement Configuration (3) Results: Upload: /7 MHz Download: /3 MHz Upload: /3 MHz Download: /7 MHz

Cost 286 Wroclav 17-18/09/200318/27 Some geography First written record from Area: 48,5 km 2 (include agricultural) Population: 1200

Cost 286 Wroclav 17-18/09/200319/27 Pictures from Bárdudvarnok

Cost 286 Wroclav 17-18/09/200320/27 Bárdudvarnok

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

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

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.

Cost 286 Wroclav 17-18/09/200324/27 „Wireless” PLT 7MHz 16MHZ 3MHz 11MHZ Attenuation Upload: 340 3MHz Download: 550 7MHz Upload: MHz Download: MHz

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)

Cost 286 Wroclav 17-18/09/200326/27 Disturbance of CF lamps (2/2)

Cost 286 Wroclav 17-18/09/200327/27 Thank you for your attention! Any questions?