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WO1993018567A1 - Systeme electrique de transport d'energie - Google Patents

Systeme electrique de transport d'energie Download PDF

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Publication number
WO1993018567A1
WO1993018567A1 PCT/DE1992/000206 DE9200206W WO9318567A1 WO 1993018567 A1 WO1993018567 A1 WO 1993018567A1 DE 9200206 W DE9200206 W DE 9200206W WO 9318567 A1 WO9318567 A1 WO 9318567A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
phase
energy
voltage
transmission line
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/DE1992/000206
Other languages
German (de)
English (en)
Inventor
Klaus Renz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 AG, Siemens Corp filed Critical Siemens AG
Priority to EP92905777A priority Critical patent/EP0630534A1/fr
Priority to PCT/DE1992/000206 priority patent/WO1993018567A1/fr
Priority to CA 2117697 priority patent/CA2117697A1/fr
Priority to AU13617/92A priority patent/AU1361792A/en
Publication of WO1993018567A1 publication Critical patent/WO1993018567A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/34—Arrangements for transfer of electric power between networks of substantially different frequency
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks

Definitions

  • the invention relates to a method and a pre- "5 direction to economic transmission of electrical energy Ener ⁇ low power over long distances.
  • HVDC Voltage-direct current transmission
  • a high-voltage direct current system has the input side and the output side in each case a Stromrichter ⁇ transformer which corresponds transformed 2 5 speaking size, the voltages of the connected three-phase systems to the transmission voltage.
  • the three-phase voltage is converted into a direct voltage by means of converter valves arranged in three-phase bridge circuits.
  • Several such bridges are connected in series on the DC side to increase the transmission voltage and power, the center 3 Q of the series connection being mostly grounded.
  • a corresponding secondary star and delta connection of the transformers means that the harmonic component on the
  • a direct current overhead line is more economical than a three-phase line with the same transmission capacity, since it can be better used in terms of voltage and current and also only requires two conductors. This results in correspondingly fewer insulators, lighter masts and a smaller route width, which is very important when crossing built-up areas.
  • the converter stations cost considerably more than normal transformer stations. If the HGU is to be used, these additional costs for the station must be compensated for by the savings in the line, which requires a minimum distance.
  • the economic limit distances for a two-point connection for 800 to 2,500 MW are between 500 and 1,500 km. Branches of the direct current line for drawing or supplying power can be realized by means of parallel or series-connected intermediate stations; however, they have an adverse effect on economic viability.
  • the invention is based on the object of specifying a method and a device for the economical transmission of electrical energy of small power over large distances.
  • This object is achieved in that the energy is transmitted in a single phase and a load-dependent voltage drop in the transmission line is suitably compensated for.
  • the series capacitor is used here to keep the transmission voltage low. In contrast to high-performance transmission systems, higher degrees of compensation can be achieved, which means the same voltage and loss ratios as in. a high-voltage direct current transmission system can be approximately achieved. If a transmission frequency of 50 to 60 Hz is used, single-phase loads can be supplied with energy without the involvement of a converter. Since the power of the energy to be transmitted is low, only short-circuit currents occur in the event of a short circuit, so that the problems with series-compensated lines of high power do not occur.
  • the energy is transmitted by means of a high transmission voltage with a transmission frequency that differs from zero.
  • the inductive voltage drop is significantly smaller, so that the transmission voltage can be selected to be smaller with the same energy to be transmitted.
  • the device for transmitting electrical energy of low power over large distances consists of a single-phase transmission line, a power supply, a capacitor bank which is arranged in the course of the transmission line, and a control and regulating device to control a suitable compensation.
  • a suitable compensation e.g., water, wind energy and solar energy
  • a three-phase load is connected to the transmission line by means of a converter.
  • the converter advantageously being connected to the transmission line by means of a transformer.
  • the converter does not have to be designed for the high transmission voltage, as a result of which the costs of this converter can be kept low.
  • Known converter circuits for example a pulse converter, are provided to generate the consumer frequency.
  • FIG. 1 shows a first embodiment of the inventive device and in FIG. 2 shows a second embodiment of the device in more detail.
  • FIG. 1 shows an energy transmission system according to the invention, which consists of a power supply 2, a capacitor bank 4 with an associated control and regulating device 6 and a single-phase transmission line 8.
  • a network protection device 10 consisting of a circuit breaker 12, a current detection device 14 and a protection device 16, is also provided.
  • the capacitor bank 4 is arranged in the course of the single-phase transmission line 8. This capacitor bank 4 can also be accommodated in a transmitting switching station.
  • This capacitor bank 4 can be switched on or off in series as a whole or in several partial capacitors (segments).
  • Such a capacitor bank 4 consists of a plurality of series capacitors, each of which an overvoltage arrester is electrically connected in parallel.
  • a parallel circuit consisting of a bypass circuit breaker and usually a spark gap is connected electrically in parallel with the surge arrester.
  • each segment is provided with a damping element (choke).
  • a damping element Choke
  • Such an equivalent circuit diagram can be found in the article "Regulated parallel and series compensation” by GH Thumm and P. Walther, printed in the magazine “Elektrie", Berlin 45, 1991, No. 3 ' , pages 88 to 90.
  • the capacitors of the capacitor bank 4 are switched on and off by means of the control, regulating and monitoring device 6 in that a parallel power switch or an electronic switch, for example a thyristor, is opened or closed.
  • a further improvement is possible through a stepless, regulated compensation.
  • a known possibility is to connect a suitably dimensioned choke to the thyristor switch in series.
  • Such a circuit is described, for example, in Christi et al "Advenced Series Compensation with variable Impedance", EPRI Nov. 90 in FIG. 3 printed.
  • the protection of each capacitor of the capacitor bank 4 in the event of a short circuit in the network is ensured by the parallel arresters, by the triggerable spark gap and / or by the parallel circuit breaker.
  • the capacitor bank 4 is protected by means of the network protection device 10, for example in the event of a network short circuit.
  • a medium-voltage network can be provided as the network infeed 2.
  • alternative energy sources such as water, wind and solar energy, which are available away from consumers, as the network feed 2.
  • Alternative energy can thus be used economically to supply remote consumers, this energy being transmitted economically with this transmission system.
  • the frequency of the network feed 2 is 50 to 60 Hz, but can also be significantly lower, but different from zero Hz.
  • the voltage drop of the transmission line 8 is reduced by reducing the transmission frequency, as a result of which the same energy can be transmitted with a low transmission voltage.
  • the length of the transmission line 8 in this energy transmission system according to the invention is between a few kilometers to a few hundred kilometers and the energy to be transmitted is approximately 0.5 to 20 MW. Since the effective line impedance can be largely compensated, the same voltage and loss ratios are achieved as in a high-voltage direct current transmission system. In contrast to the known use, the series capacitor 4 serves rather to keep the transmission voltage low so that the advantages listed at the beginning are achieved.
  • FIG. 2 shows a further embodiment of the device according to the invention, the same elements bearing the same reference numbers. In this embodiment, a single-phase load 18 and a three-phase load 20 are connected to the end of the transmission line 8.
  • a transformer 22 is used for the potential-isolating coupling of the load 18.
  • the three-phase load 20 is also coupled to the transmission line 8 via a transformer 24, a converter 26 being provided between the transformer 24 and the load 20.
  • this converter 26 for example a pulse converter, a single-phase mains voltage with 50 to 60 Hz becomes a three-phase supply voltage with 50 to 60 Hz.
  • the converter 26 can also be used if a much lower one is used transmission frequency than 50 Hz, from this transmission frequency again generate a usual consumer frequency of 50 to 60 Hz.
  • the converter 26 does not have to be designed for the high transmission voltage, which considerably increases the economy of the transmission system.
  • the three-phase load 20 is supplied with electrical power by means of a branch 28 from the transmission line 8.
  • branches 28 of the transmission line 8 can be implemented for power consumption or supply in this transmission system without having an adverse effect on the economy.
  • a three-phase high-voltage supply is provided as the network feed 2.
  • the value of this three-phase high voltage is adjusted by means of an input transformer 30 to the value of the single-phase transmission Voltage transformed down.
  • this transmission system can be connected to any voltage level without the economy being adversely affected.
  • remote locations can be economically supplied with low-power electrical energy over a large distance by means of a single-phase stub.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de transporter de manière économique l'énergie électrique de faible puissance sur de longues distances. Selon l'invention, cette énergie et acheminée sous forme monophasée et une chute de tension dans la ligne de transport due à la charge est compensée de manière appropriée. Cela permet d'alimenter en énergie électrique de manière économique, des localités retirées.
PCT/DE1992/000206 1992-03-11 1992-03-11 Systeme electrique de transport d'energie Ceased WO1993018567A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP92905777A EP0630534A1 (fr) 1992-03-11 1992-03-11 Systeme electrique de transport d'energie
PCT/DE1992/000206 WO1993018567A1 (fr) 1992-03-11 1992-03-11 Systeme electrique de transport d'energie
CA 2117697 CA2117697A1 (fr) 1992-03-11 1992-03-11 Systeme de transmission de l'energie electrique
AU13617/92A AU1361792A (en) 1992-03-11 1992-03-11 Electric enery transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1992/000206 WO1993018567A1 (fr) 1992-03-11 1992-03-11 Systeme electrique de transport d'energie

Publications (1)

Publication Number Publication Date
WO1993018567A1 true WO1993018567A1 (fr) 1993-09-16

Family

ID=6874894

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/000206 Ceased WO1993018567A1 (fr) 1992-03-11 1992-03-11 Systeme electrique de transport d'energie

Country Status (4)

Country Link
EP (1) EP0630534A1 (fr)
AU (1) AU1361792A (fr)
CA (1) CA2117697A1 (fr)
WO (1) WO1993018567A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001082443A1 (fr) * 2000-04-25 2001-11-01 Sp Systems Pte Ltd. Compensateur de tension serie dynamique et procede d'utilisation
WO2009015670A1 (fr) * 2007-07-30 2009-02-05 Siemens Aktiengesellschaft Système de transmission d'énergie, en particulier pour des plates-formes pétrolières
WO2005124959A3 (fr) * 2004-06-15 2009-03-12 Siemens Ag Dispositif permettant la transmission d'energie electrique entre des reseaux d'alimentation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026374A1 (fr) * 1979-09-28 1981-04-08 Siemens Aktiengesellschaft Dispositif pour le transfert d'énergie électrique de grande puissance d'un réseau d'alimentation triphasé à fréquence plus élevée à un réseau de charge monophasé à fréquence plus basse
DE3150385A1 (de) * 1981-12-17 1983-06-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Statische netzkupplung fuer hohe leistung zur kupplung eines dreiphasennetzes hoeherer frequenz und eines einphasennetzes mit niedrigerer frequenz
GB2170623A (en) * 1985-02-06 1986-08-06 Ass Elect Ind A c power supply system
US4999565A (en) * 1990-01-02 1991-03-12 Electric Power Research Institute Apparatus for controlling the reactive impedance of a transmission line

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026374A1 (fr) * 1979-09-28 1981-04-08 Siemens Aktiengesellschaft Dispositif pour le transfert d'énergie électrique de grande puissance d'un réseau d'alimentation triphasé à fréquence plus élevée à un réseau de charge monophasé à fréquence plus basse
DE3150385A1 (de) * 1981-12-17 1983-06-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Statische netzkupplung fuer hohe leistung zur kupplung eines dreiphasennetzes hoeherer frequenz und eines einphasennetzes mit niedrigerer frequenz
GB2170623A (en) * 1985-02-06 1986-08-06 Ass Elect Ind A c power supply system
US4999565A (en) * 1990-01-02 1991-03-12 Electric Power Research Institute Apparatus for controlling the reactive impedance of a transmission line

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IEEE/CSEE JOINT CONFERENCE ON HIGH-VOLTAGE TRANSMISSION SYSTEMS IN CHINA 17. Oktober 1987, BEIJING,CHINA Seiten 252 - 257 ERCHE 'improvement of the performance of electric power systems' *
RESEARCH DISCLOSURE Nr. 302, Juni 1989, NEW YORK Seiten 472 - 472 ABDEL-ATY EDRIS 'low frequency transmission' *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001082443A1 (fr) * 2000-04-25 2001-11-01 Sp Systems Pte Ltd. Compensateur de tension serie dynamique et procede d'utilisation
US6670793B1 (en) 2000-04-25 2003-12-30 Sp Systems Pte Ltd Dynamic series voltage compensator and method thereof
AU2000241632B2 (en) * 2000-04-25 2004-09-16 Sp Systems Pte Ltd. Dynamic series voltage compensator and method thereof
WO2005124959A3 (fr) * 2004-06-15 2009-03-12 Siemens Ag Dispositif permettant la transmission d'energie electrique entre des reseaux d'alimentation
WO2009015670A1 (fr) * 2007-07-30 2009-02-05 Siemens Aktiengesellschaft Système de transmission d'énergie, en particulier pour des plates-formes pétrolières

Also Published As

Publication number Publication date
AU1361792A (en) 1993-10-05
EP0630534A1 (fr) 1994-12-28
CA2117697A1 (fr) 1993-09-16

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