1 / 21

BUTE Part 1 Conducted and radiated disturbance regulations for PLC devices

BUTE Part 1 Conducted and radiated disturbance regulations for PLC devices. BUTE Part 2 Site Trial using the low voltage feeder of RBS sited on HV power line tower. EPFL Part 3 Mitigation of electromagnetic field radiated by PLC systems (in indoor environment).

ann-hopkins
Download Presentation

BUTE Part 1 Conducted and radiated disturbance regulations for PLC devices

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. BUTE Part 1 Conducted and radiated disturbance regulations for PLC devices BUTE Part 2 Site Trial using the low voltage feeder of RBS sited on HV power line tower EPFL Part 3 Mitigation of electromagnetic field radiated by PLC systems (in indoor environment) János Löcher; György Varjú BUTE EPFL COST286 meeting Barcelona 14/15 April 2005

  2. BUTE Part 1 Conducted and radiated disturbance regulations for PLC devices COST286 meeting Barcelona 14/15 April 2005

  3. IEC-61000-3-8 Signaling on low voltage electrical installations  Limits of mains terminal interference voltage  No radiated interference limits apply below 30 MHz COST286 meeting Barcelona 14/15 April 2005

  4. CLC/prTS50437:2004 Draft Technical Specification for electromagnetic emissions fromaccess powerline communications networks Limits of conducted common mode (asymmetric mode) disturbances at network cables Limits of radiated disturbances from networks cables COST286 meeting Barcelona 14/15 April 2005

  5. ITU-T K.60 Emission limits and test methods for telecommunication networks  No conducted interference limits apply  Limits for unwanted disturbance emissions from telecommunication networks COST286 meeting Barcelona 14/15 April 2005

  6. H-field limits converted to E-field using the far field correction of 51.5 dB COST286 meeting Barcelona 14/15 April 2005

  7. BUTE Part 2 Site Trial using the low voltage feeder of RBS sited on HV power line tower COST286 meeting Barcelona 14/15 April 2005

  8. Site Trial using the low voltage feeder of RBS sited on HV power line tower COST286 meeting Barcelona 14/15 April 2005

  9. Signal injection HE Modem Radiated field metering Measuring concept 3 phase Low Voltage feeder PVC insulated phase conductors wounded around a bare neutral COST286 meeting Barcelona 14/15 April 2005

  10. System overview Coupling PLT HE: (capacitive, inductive) - one, two or three phase to neutral - phase to phase - any other combination PLT Modem: (only capacitive) - only phase to neutral Used frequencyUpstream: 13.8 – 16.3 MHz (512 carrier)Downstream: 19 – 22.8 MHz (768 carrier) Injected signal levelmax. 30 dBm Data transfer rateDownstream: max. 27 MbpsUpstream: max. 18 Mbps COST286 meeting Barcelona 14/15 April 2005

  11. Characteristics to be measured • K-factor measurement - H-field - Noise floor - Injected signal • Ingression Noise • LCL, TCL measurement - CM current • Attenuation characteristics measurement • Assessment of a technique to mitigate electromagnetic radiation from PLC Note: Regarding the measuring procedures, see: (JTA) “EMC analysis of LF unstructured telecom networks” COST286 meeting Barcelona 14/15 April 2005

  12. EPFL Part 3 Mitigation of electromagnetic field radiated by PLC systems (in indoor environment) COST286 meeting Barcelona 14/15 April 2005

  13. - IPLC Vcomp + + Icomp hPLC(f) VPLC - Vcomp=-VPLC hcomp(f) Mitigation of emissions Injection of an auxiliary compensation signal) EPLC=VPLChPLC(f) Ecomp=Vcomphcomp(f) ? hPLC(f) Vcomp hcomp(f)= -VPLC hPLC(f) hcomp(f) COST286 meeting Barcelona 14/15 April 2005

  14. Classical Coupling of PLC Signals COST286 meeting Barcelona 14/15 April 2005

  15. Antenna mode and TL mode Currents COST286 meeting Barcelona 14/15 April 2005

  16. Mitigation • Idea: inject an auxiliary signal S2 into the line formed by the ground and the neutral conductors • The auxiliary signal S2 has the same amplitude and waveshape as the original PLC signal S1, but with opposite polarity COST286 meeting Barcelona 14/15 April 2005

  17. Proposed Coupling: Power Splitter COST286 meeting Barcelona 14/15 April 2005

  18. Bidirectional Data Transmission COST286 meeting Barcelona 14/15 April 2005

  19. Test Configurations COST286 meeting Barcelona 14/15 April 2005

  20. Measurements COST286 meeting Barcelona 14/15 April 2005

  21. Measurement Results COST286 meeting Barcelona 14/15 April 2005

More Related