Budapest university of technology and economy research seminar october 2006
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Budapest University of Technology and Economy Research Seminar October 2006. Standardisation and Interoperability of the Technology and equipment for BPL Systems. Key Points of Talk. Current Developments of BPL in the World Technical Restrictions and Limitations

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Budapest University of Technology and Economy Research Seminar October 2006

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Budapest university of technology and economy research seminar october 2006

Budapest University of Technology and EconomyResearch SeminarOctober 2006

Standardisation and Interoperability of the Technology and equipment for BPL Systems

Power CommunicationsSystems Research GroupOpenUniversity


Key points of talk

Key Points of Talk

  • Current Developments of BPL in the World

  • Technical Restrictions and Limitations

  • Committee’s Responsible for Improving BPL systems

  • The way forward

Power CommunicationsSystems Research GroupOpenUniversity


Key committee drivers for bpl

Key Committee Drivers For BPL

  • CISPR 22 ,I, Special committee for BPL Measurement; Established October 2005

  • Three meetings so Far

  • European EMC Committee ;Code of Practice for Measurements

  • Cenelec SC205A BPL systems

  • ETSI BPL

  • IEEE BPL committee: EMC:Safety: Coupling

  • 6thFramework Programme “OPERA”

Power CommunicationsSystems Research GroupOpenUniversity


Plc generic model

Internet

Backhaul

network

PLC Generic Model

High

Voltage

Xmission

Equipment

pt to multi-pt

CPE

Phone(s)

pt to pt

Fibre

Network

PC

Medium Voltage Grid

(“Last Mile”)

Low Voltage

(“Last 100m”)

In-Premise

(“Last Inch”)

* CPE - Customer Premise Equipment

Power CommunicationsSystems Research GroupOpenUniversity


Budapest university of technology and economy research seminar october 2006

Overhead PLT

Power CommunicationsSystems Research GroupOpenUniversity


Plc pilot projects in europe

PLC pilot projects in Europe

LinaNET,Reykjavik/ascom

Linanet/Siemens

BKK,Bergen/Siemens

Viken,Oslo/ascom

Scottish & Southern Energy

Elforsk,Stockholm/mainnet

Vattenfall,Gotland/mainnet

Nesa,Kopenhagen/ascom

EviCom,Malmö/ascom

EviCom,Malmö/Siemens

EWEtel,Oldenburg/Siemens

RWE,Essen/ascom

EAM,Kassel/Siemens

Avacon,Magdeburg/oneline

CEGECOM,Luxembourg/ascom

GEW,Köln/Siemens

MVV,Mannheim/Mainnet

FT-Cnet,France/ascom

EnBW,Ellwangen/Siemens

EdF,Strasbourg/ascom

SSW,Salzburg/Siemens

EVN,Wien/ascom

DIAX,Fribourg/ascom

Novacom/EnBW,Budapest/Siemens

TIWAG,Fulpmes/ascom

EdF/mainnet

ESG,PPC, Linz/mainnet

Union Fenosa/mainnet

Enel,Bologna/ascom

Endesa,Barcelona/ascom

EdP,Lisbon/ascom

Enel,Florence/mainnet

Endesa,Sevilla/DS2

Power CommunicationsSystems Research GroupOpenUniversity


Worldwide plc activities

Worldwide PLC Activities

Norwegen:

Stadtwerke Bergen

Schweden:

Sydkraft, BirkaEnergi

Finnland – EVU-Verband

Island:

LinaNet

Reykjavik Energy

China

Provinz Sechuan

UK/SSE

Indianapolis, Boston

D – RWE, EnBW, MVV, onelineA - TIWAG, EVN, Stw. Salzburg, EVO

CH - DIAX

Spanien

Endessa

Portugal

EdP

Italien

Enel

Korea

Keyin

Kuwait

ITS

Qatar

Israel

Mainnet,

ITRAN,

elLine

Malaysia

FibreCom

Multimedia-Ministerium

Brasilien:

Copel

Cemig

InfoPaolo

Südafrika

(Siemens)

Argentinien

(ascom)

Chile

(Endesa)

Power CommunicationsSystems Research GroupOpenUniversity


Frequency spectrum

Frequency Spectrum

Low Frequency Power Line Transmission

USA: 50KHz to 450KHz(IEEE)

Europe:3Khz to 148.5KHz(Cenelec50065)

High Frequency Transmission

1MHz to 30MHz underground

USA 1MHz to 80MHz for underground and overhead

Power CommunicationsSystems Research GroupOpenUniversity


Deterministic communication system adsl vdsl cable modems

Deterministic Communication System –ADSL; VDSL;Cable Modems

  • Unique frequency specification

  • Characteristic impedance

  • Minimum noise

  • Constant bandwidth

  • Standard architecture

  • No common mode current and Potential

    Radiated emission to cause interference

Power CommunicationsSystems Research GroupOpenUniversity


Plt system communication non deterministic

PLT System Communication Non-Deterministic

  • Unique frequency specification

  • Characteristic impedance

  • Minimum noise

  • Constant bandwidth

  • Standard architecture

Power CommunicationsSystems Research GroupOpenUniversity


Leaky cables @1mhz to 30mhz

Leaky cables @1Mhz to 30Mhz

  • At these frequencies not all the signal is transmitted down the cable-it leaks power

  • So some of the high frequency signal emanates as electromagnetic radiation

  • Hence power cables can be considered as linear antennas and

  • Low efficiency

Power CommunicationsSystems Research GroupOpenUniversity


In house communications

In-House Communications

  • Limited to inside buildings of all types;

  • Industrial

  • Commercial

  • Residential

  • Different electrical structures: single and 3 phase :Ring Main & Tree &Branch

  • wide range of services

  • Frequency range 1 to 30Mhz to80MHz

Power CommunicationsSystems Research GroupOpenUniversity


Key parameters for investigation

Key Parameters for Investigation

  • Investigation of Key parameters of Broadband Power Line Carrier communications

  • Impedance of the power Line over the frequency range 3KHz to 30MHz

  • Signal Injection Power: symmetrical and asymmetrical

  • Conducted current

  • Common mode current –Potential forRadiated emission from power line

Power CommunicationsSystems Research GroupOpenUniversity


Key parameters forinvestigation 2

Key Parameters forInvestigation(2)

  • Longitudinal Conversion Loss (LCL)

  • Regression of signal

  • K Factor

  • Noise Floor measurements

  • Relationship between the Impedance of Line , LCL, with type of devices connected to the line.

  • Effects of network architecture on radiated emission

  • Mechanisms for understanding emissions in terms of these parameters

Power CommunicationsSystems Research GroupOpenUniversity


Key parameters for investigations 3

Key Parameters for Investigations(3)

  • Noise floor measurements for PLT , Cable systems and XDSL systems

  • Inter-modulation products (IMP’s)

  • Ingress and egress noise

  • Variation of all these parameters with different frequency ranges

Power CommunicationsSystems Research GroupOpenUniversity


Established communication services in the 1mhz to 30mhz

Established Communication Services in the 1MHz to 30MHz

  • Broadcasting Channels

  • Amateur Radio

  • Mobile Communications

  • Distress frequencies

  • Military communications

  • Radio astronomy

Power CommunicationsSystems Research GroupOpenUniversity


Sources of interference

Sources of Interference

  • Noise caused by impedance mismatch

  • Impulse noise ingress from electrical appliances

  • Narrow band ingress from SW broadcast

  • Attenuation of the network

  • impedance variations

  • general interference

  • poor power quality

Power CommunicationsSystems Research GroupOpenUniversity


Spectrum technologies

Spectrum & Technologies

30 kHz

300 kHz

3 MHz

30 MHz

MEDIUM FREQUENCY

LOW FREQUENCY

HIGH FREQUENCY

GROUND WAVE

SKY WAVE

SPACE WAVE

ADSL 25 kHz - 1.1 MHz

VDSL 1.1 - 30 MHz

DPL 1.1 - 30 MHz

Power CommunicationsSystems Research GroupOpenUniversity


Scope

Scope

IONOSPHERE

SKY WAVE

3 - 30MHz

Q

SPACE WAVE

0.1 - 30MHz

GROUND WAVE

0.1 - 3MHz

LONDON

ROME

G

NEAR FIELD

SUBURBAN

RURAL

Average UK ground

0 km

5 km

200 km

1500 km

Power CommunicationsSystems Research GroupOpenUniversity


Physical structure of lv network

Physical structure of LV network

Armoured Cable

  • Underground & overhead distribution

  • Armoured cable

  • Conditioning units (CU) may be used

Conditioning Unit (CU)

Network

MV network

LV network

Source: York EMC Services Ltd

CU

Internal mains network

LV network

SUBSTATION

Data network

CU

Data port

Power CommunicationsSystems Research GroupOpenUniversity


Budapest university of technology and economy research seminar october 2006

Coupling via the Mains Network

LN

50Ω

50µH

Source

Victim

Attenuation, dB/30m

30

20

10

Distribution network

Mains only

Power CommunicationsSystems Research GroupOpenUniversity

0.1

1

10

MHz

Frequency


Budapest university of technology and economy research seminar october 2006

Power CommunicationsSystems Research GroupOpenUniversity


Budapest university of technology and economy research seminar october 2006

Radiated emission

Mains cable

Equip1

Mains cable

plc1

Conducted emission

through mains

Conductio through

earth impedance

Radiated emission cable to cable

Mains cable

input

Mains cable

Radiated emission case to case

plc2

External mains interference

Electromagnetic radiated emission and coupling Interference

Power CommunicationsSystems Research GroupOpenUniversity


Budapest university of technology and economy research seminar october 2006

Radiated Emission standards in the world

Power CommunicationsSystems Research GroupOpenUniversity

Fv,sbsbbbmb #bmb


An electromagnetic architecture for manchester city england

An Electromagnetic ArchitectureFor “Manchester” City England

What Type of Electromagnetic architecture?

  • 5 Engineering universities

  • International airport

  • Heavy Industry with machines and electrical systems

  • including British Aerospace : Car Manufactures

  • Many small electrical engineering companies

  • All these contribute to the continous noise floor

Power CommunicationsSystems Research GroupOpenUniversity


Conclusions and forward

Conclusions and Forward

  • More research into the EMC components of BPL

  • More measurements throughout the World

  • Investigation of cable types and age

  • Greater Understanding of Power Requirements of system

  • Keep In contact

Power CommunicationsSystems Research GroupOpenUniversity


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