WO2003030397A1 - Procede de reduction du rayonnement de signaux injectes dans des lignes d'alimentation en energie - Google Patents

Procede de reduction du rayonnement de signaux injectes dans des lignes d'alimentation en energie Download PDF

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Publication number
WO2003030397A1
WO2003030397A1 PCT/DE2002/003583 DE0203583W WO03030397A1 WO 2003030397 A1 WO2003030397 A1 WO 2003030397A1 DE 0203583 W DE0203583 W DE 0203583W WO 03030397 A1 WO03030397 A1 WO 03030397A1
Authority
WO
WIPO (PCT)
Prior art keywords
supply lines
energy supply
power supply
impedances
measured
Prior art date
Application number
PCT/DE2002/003583
Other languages
German (de)
English (en)
Inventor
Kurt Aretz
Edgar Bolinth
Wolfgang Gröting
Ralf Kern
Heinz Schmidt
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2003030397A1 publication Critical patent/WO2003030397A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control

Definitions

  • the transmission devices are connected to the energy supply lines in a manner similar to a bus system.
  • This energy supply network which is formed by pairs of energy supply network conductors, is usually a very asymmetrical network, the asymmetry being predominantly caused by asymmetrical network terminations and by the single-phase voltage-guided energy supply lines.
  • the transmission devices are predominantly coupled symmetrically to the energy supply lines, since in the case of a symmetrical coupling the radiation of the coupled signal - predominantly in the frequency range from 10 to 30 MHz - is emitted the least for the transmission of information.
  • a symmetrical coupling does not lead to a reduced radiation of the coupled signal from the transmission devices.
  • the underlying the invention task is the countries • emission of a coupled by transmission facilities in the ⁇ power lines signal to vermin-.
  • the object is solved by the features of claim 1.
  • the essential aspect of the method according to the invention can be seen in the fact that the asymmetry properties of the energy supply lines of the energy supply network are measured and the input and output impedances of the transmission devices as a function of the measured asymmetry. measurement properties of the power supply lines can be set. The emission of the signal coupled into the power supply lines can be considerably reduced by the transmission-side and reception-side adaptation.
  • the drawing shows that part of the transmitter S and the receiver E of transmission devices UE which are necessary for the explanation of the invention and which are connected to power supply lines L, N.
  • the impedances ZA, ZB inserted in the two power supply lines L, N represent the equivalent impedances of the power supply lines L, N.
  • a controllable impedance Z1, Z2 is connected to each of the power supply lines L, N, the other connection of which is connected to a signal generator G forming a signal for the transmission of information in the frequency range between 10 and 30 MHz.
  • a control device ST is arranged in the transmitter S and receiver E, which is implemented by a microprocessor. With the help of the control devices, both the impedance measurements are controlled in the order and the measured values are determined and the controllable impedances are set.
  • an asymmetry measurement is carried out, for example, before an information transmission or even during a longer information transmission during the transmission.
  • An advantageous measurement of the asymmetry is an impedance measurement of the two energy supply lines L, N against the ground potential M.
  • the difference between the measured impedances Z5, Z6 is now calculated as a complementary impedance by appropriate setting of one or both controllable impedances Z1, Z2 in the energy supply lines L, N inserted. This measurement is carried out with the aid of the controls ST, which set the two controllable impedances Z1, Z2 in such a way that symmetry is achieved.
  • the output stage of the transmitter S is terminated symmetrically to the ground potential M.
  • the same measurement procedure is now carried out at the receiver E of the other transmission devices UE connected to the energy supply lines L, N.
  • the asymmetry of the two energy supply lines L, N is again measured and the difference between the two measured impedances Z5, Z6 is inserted as a complementary impedance with the help of one or both controllable impedances Z3, Z4 in the energy supply lines L, N in such a way that the input part of the transmitter is closed symmetrically against ground potential.
  • the transmitter S and receiver E of the two transmission devices UE are optimally adapted to the impedances or to the asymmetry of the energy supply lines L, N, i.e. the input and output impedances of the transmission devices UE are optimally adapted to the asymmetry properties of the energy supply network.
  • the radiation of the signal carried over the power supply network is considerably reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Selon l'invention, les caractéristiques d'asymétrie des lignes d'alimentation en énergie (N, L) du réseau d'alimentation en énergie sont mesurées et les impédances d'entrée et de sortie des dispositifs de transmission (UE) sont réglées en fonction des caractéristiques d'asymétrie mesurées des lignes d'alimentation en énergie (L, N). Par adaptation de l'impédance côté émission et côté réception, on obtient une adaptation aux caractéristiques d'asymétrie des lignes d'alimentation en énergie (L, N), le rayonnement du signal (s) injecté dans les lignes d'alimentation en énergie étant ainsi nettement réduit.
PCT/DE2002/003583 2001-09-28 2002-09-20 Procede de reduction du rayonnement de signaux injectes dans des lignes d'alimentation en energie WO2003030397A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10147918.2 2001-09-28
DE2001147918 DE10147918A1 (de) 2001-09-28 2001-09-28 Verfahren zum Vermindern der Abstrahlung von in Energieversorgungsleitungen eingekoppelten Signalen

Publications (1)

Publication Number Publication Date
WO2003030397A1 true WO2003030397A1 (fr) 2003-04-10

Family

ID=7700657

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/003583 WO2003030397A1 (fr) 2001-09-28 2002-09-20 Procede de reduction du rayonnement de signaux injectes dans des lignes d'alimentation en energie

Country Status (2)

Country Link
DE (1) DE10147918A1 (fr)
WO (1) WO2003030397A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2947784A1 (fr) 2014-05-23 2015-11-25 Witikee SRL Appareil et procédé pour la transmission de signaux de données
CN109495136A (zh) * 2018-12-29 2019-03-19 重庆邮电大学 一种车载电力线通信自适应阻抗匹配方法
DE102013214825B4 (de) 2013-07-30 2023-11-23 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Anpassen der Übertragungseigenschaften eines Signals

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6998962B2 (en) 2000-04-14 2006-02-14 Current Technologies, Llc Power line communication apparatus and method of using the same
WO2005008902A2 (fr) 2003-07-03 2005-01-27 Current Technologies, Llc Systeme de communication par ligne electrique et procede de fonctionnement associe
US7280033B2 (en) 2003-10-15 2007-10-09 Current Technologies, Llc Surface wave power line communications system and method
US7307510B2 (en) 2005-09-02 2007-12-11 Current Technologies, Llc Power meter bypass device and method for a power line communications system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE630211C (de) * 1930-07-01 1936-05-23 Siemens & Halske Akt Ges Verfahren zur Verringerung der durch Erdunsymmetrien hervorgerufenen Stoerungen in Fernmeldeseekabeln
DE3318508A1 (de) * 1983-05-20 1984-11-22 Siemens AG, 1000 Berlin und 8000 München Verfahren zur unsymmetriemessung
DE19844394A1 (de) * 1998-09-28 2000-03-30 Stiebel Eltron Gmbh & Co Kg Zweileiter-Bussystem

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001069812A1 (fr) * 2000-03-15 2001-09-20 Siemens Aktiengesellschaft Systeme de communication par lignes electriques, reseau de transmission a communication par lignes electriques et appareil de communication par lignes electriques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE630211C (de) * 1930-07-01 1936-05-23 Siemens & Halske Akt Ges Verfahren zur Verringerung der durch Erdunsymmetrien hervorgerufenen Stoerungen in Fernmeldeseekabeln
DE3318508A1 (de) * 1983-05-20 1984-11-22 Siemens AG, 1000 Berlin und 8000 München Verfahren zur unsymmetriemessung
DE19844394A1 (de) * 1998-09-28 2000-03-30 Stiebel Eltron Gmbh & Co Kg Zweileiter-Bussystem

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013214825B4 (de) 2013-07-30 2023-11-23 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Anpassen der Übertragungseigenschaften eines Signals
EP2947784A1 (fr) 2014-05-23 2015-11-25 Witikee SRL Appareil et procédé pour la transmission de signaux de données
CN109495136A (zh) * 2018-12-29 2019-03-19 重庆邮电大学 一种车载电力线通信自适应阻抗匹配方法

Also Published As

Publication number Publication date
DE10147918A1 (de) 2003-04-24

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