WO2012037964A1 - Convertisseur continu-continu connecté en série pour commander la répartition des charges sur un système de transmission électrique hvdc - Google Patents

Convertisseur continu-continu connecté en série pour commander la répartition des charges sur un système de transmission électrique hvdc Download PDF

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Publication number
WO2012037964A1
WO2012037964A1 PCT/EP2010/063878 EP2010063878W WO2012037964A1 WO 2012037964 A1 WO2012037964 A1 WO 2012037964A1 EP 2010063878 W EP2010063878 W EP 2010063878W WO 2012037964 A1 WO2012037964 A1 WO 2012037964A1
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WO
WIPO (PCT)
Prior art keywords
converter
hvdc
direct current
transmission line
voltage
Prior art date
Application number
PCT/EP2010/063878
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English (en)
Inventor
Praveen Kumar Barupati
Subhasish Mukherjee
Tomas Jonsson
Sasitharan Subramanian
Original Assignee
Abb Technology Ag
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 Abb Technology Ag filed Critical Abb Technology Ag
Priority to PCT/EP2010/063878 priority Critical patent/WO2012037964A1/fr
Publication of WO2012037964A1 publication Critical patent/WO2012037964A1/fr

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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
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • 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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H02J1/102—Parallel operation of dc sources being switching converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

Definitions

  • the present invention relates to an apparatus for controlling the electric power transmission in a high voltage direct current, HVDC, power transmission system comprising at least one HVDC transmission line for carrying direct current, DC. Further, the present invention relates to a HVDC power transmission system comprising at least one HVDC transmission line for carrying direct current and a plurality of converter stations connected to the at least one HVDC transmission line, each of the converter stations being adapted to convert alternating current to direct current for input to the at least one HVDC transmission line, and/or direct current to alternating current, the system comprising an apparatus for controlling the electric power transmission in the system.
  • a HVDC power distribution network or a HVDC power transmission system uses direct current for the transmission of electrical power, in contrast to the more common AC systems. For long-distance distribution, HVDC systems may be less expensive and may suffer lower electrical losses.
  • a HVDC power transmission system comprises at least one long-distance HVDC link or cable for carrying direct current a long distance, e.g. under sea, and converter stations for converting alternating current, AC, to direct current for input to the HVDC power transmission system and converter stations for converting direct current back to alternating current.
  • US-B2-6,788,033 and US-A-5, 734,258 disclose DC to DC conversion and relate to stationary or portable systems powered by a DC battery, and to electric vehicles.
  • US-B2-6, 914,420 describes a power converter for converting power between a first and a second voltage, and relates to electric vehicles.
  • US-B2-7, 518,266 discloses an AC power transmission system, where a DC transmission ring is used, utilizing controllable AC-DC converters in a multi-in- feed/out-feed arrangement.
  • the object of the present invention is to improve the electric power transmission in a HVDC power transmission system. It is also an object of the present invention to provide an improved control of the electric power transmission in a HVDC power transmission system. A further object of the present invention is to avoid, reduce or prevent load-flow congestion in the system. Another object of the present invention is to provide an improved HVDC power transmission system.
  • an apparatus for controlling the electric power transmission in a high voltage direct current, HVDC, power transmission system comprising at least one HVDC transmission line for carrying direct current, DC
  • the apparatus comprises a DC-to-DC converter and a second converter for converting alternating current, AC, to direct current and/or direct current to alternating current
  • the DC-to-DC converter having two DC sides for output and/or input of direct current
  • the second converter having an AC side for output and/or input of alternating current and a DC side for output and/or input of direct current
  • the DC-to-DC converter is connectable to the HVDC transmission line
  • the second converter is connected via its DC side to the DC-to-DC converter
  • the second converter is connectable via its AC side to an AC source
  • the apparatus is adapted to control the direct current of the HVDC transmission line by introducing a DC voltage in series with the HVDC transmission line.
  • the electric power transmission in a HVDC power transmission system and the control thereof are ef- ficiently improved, and load-flow congestion in the system may be avoided, reduced or prevented.
  • the DC side of the second converter may be adapted to provide, directly or indirectly, direct current to the DC-to-DC converter, and/or vice versa.
  • the DC-to-DC converter may be adapted to convert direct current from a first voltage level to a second voltage level.
  • the DC-to-DC converter may be adapted to regulate its output voltage.
  • the apparatus of the present invention is especially advantageous and efficient for a HVDC power transmission system of the sort shown in Fig. 1 , which may be called a DC grid concept, where the system comprises several HVDC transmission lines for carrying direct current and several converter stations connected to the HVDC transmission lines.
  • the apparatus of the present invention is especially advantageous when the control of DC node voltage of the converter stations, or the control of shunt connected converter DC voltages of a DC grid, is not sufficient.
  • the direct current of the HVDC transmission line, to which the apparatus is connected can be increased or reduced in order to control the power transmission.
  • the direct current control is attained by the apparatus' introduction, or injection, of a DC voltage in series with the HVDC transmission line.
  • the apparatus according to the present invention is adapted to control the direct current of the HVDC transmission line by introducing a fictive resistance in series with the HVDC transmission line by introducing a DC voltage in series with the HVDC transmission line.
  • the various components of the apparatus of the present invention may be electrically connected, or connectable, to one another or to other units, e.g. via electrical conductors, e.g. busbars or DC lines, and/or may be indirectly connected, or connectable, e.g. electrically or inductively, via additional intermediate electric equipment or units located and connected/connectable between the components, e.g. a transformer, another converter etc.
  • High Voltage may be about 1 -1 .5 kV and above.
  • High Voltage may be about 1 -1 .5 kV and above.
  • High Voltage may be about 500 kV and above, e.g. 800 kV or 1000 kV, and above.
  • the apparatus and/or the system according to the present invention are advantageously adapted for the above-mentioned HVDC voltage levels and above.
  • the apparatus comprises control means for controlling the apparatus, wherein the control means are adapted to control the apparatus to introduce a positive DC voltage in series with the HVDC transmission line for reducing the direct current of the HVDC transmission line, and wherein the control means are adapted to control the apparatus to introduce a negative DC voltage in series with the HVDC transmission line for increasing the direct current of the HVDC transmission line.
  • the control means may be in form of a control unit and may be connectable to the HVDC power transmis- sion system, e.g. to the HVDC transmission line.
  • the control means may comprise a computer and/or a CPU.
  • control means may be adapted to control the apparatus to introduce a positive fictive resistance in series with the HVDC transmission line by introducing a positive DC voltage in series with the HVDC transmission line for reducing the direct current of the HVDC transmission line
  • control means may be adapted to control the apparatus to introduce a negative fictive resistance in series with the HVDC transmission line by introducing a negative DC voltage in series with the HVDC transmission line for increasing the direct current of the HVDC transmission line.
  • the apparatus comprises measuring means for measuring the DC load flow congestion of the HVDC power transmission system, and the measuring means are adapted to communicate with the control means.
  • the measuring means may be adapted to measure the direct current or direct voltage of the HVDC line, and the measuring means per se may have a structure known the person skilled in the art.
  • the measuring means, or measuring equipment may comprise conventional sensors, e.g. sensors for measuring direct current or voltage.
  • the apparatus comprises a bypass switch connectable to the HVDC transmission line and connected in parallel with the DC-to-DC converter, and when closed the bypass switch is adapted to conduct the direct current of the HVDC transmission line to electrically bypass the DC-to-DC converter.
  • the bypass switch By the bypass switch, the DC-to-DC converter, and the apparatus, may be bypassed during fault conditions, whereby the electric power transmission in a HVDC power transmission system and the control thereof are further improved.
  • the apparatus comprises the AC source.
  • active power should be absorbed by the AC source, and to effect or introduce a negative fictive resistance, -ARinj, active power should be injected by and from the AC source.
  • the apparatus is adapted to be connected to an AC source comprising an AC grid.
  • an AC grid for the AC source efficiently improves the electric power transmission in a HVDC power transmission system and the control thereof.
  • other suitable AC sources are possible.
  • the second converter comprises a Voltage Source Converter, VSC.
  • VSC Voltage Source Converter
  • the second converter comprises four pairs of electronic control devices, each pair of electronic control devices comprising an electronic control switch and a diode.
  • the electronic control devices may be connected to one another.
  • the inventors of the present invention have found that this structure of the second converter further improves the flexibility and efficiency of the electric power transmission in a HVDC power transmission system and the control thereof.
  • the second converter comprises six pairs of electronic control devices, each pair of electronic control devices comprising an elec- tronic control switch and a diode.
  • the inventors of the present invention have found that also this structure of the second converter further improves the flexibility and efficiency of the electric power transmission in a HVDC power transmission system and the control thereof.
  • the DC-to-DC converter comprises a full-bridge converter.
  • the inventors of the present invention have found that this structure of the DC-to- DC converter further improves the flexibility and efficiency of the electric power transmission in a HVDC power transmission system and the control thereof.
  • the DC-to-DC converter comprises four pairs of electronic control devices, each pair of electronic control devices comprising an electronic control switch and a diode.
  • the electronic control devices may be connected to one another.
  • the inventors of the present invention have found that this structure of the DC-to-DC converter further improves the flexibility and efficiency of the electric power transmission in a HVDC power transmission system and the control thereof.
  • the DC-to-DC converter comprises a capacitor.
  • the second converter is adapted to control the voltage of the capacitor.
  • the DC-to-DC converter comprises filter means for smoothing out the voltage and current ripple caused by the switching of the electronic control switches.
  • the filter means may be connected to the electronic con- trol switches.
  • the filter means, or filter components may comprise a filter capacitor and an inductor.
  • the capacitor may be connected in parallel with the electronic control switches.
  • the inductor may be connected in series with the electronic control switches.
  • the apparatus comprises an electric power transformer connected to the AC side of the second converter, and the electric power transformer is connectable to the AC source.
  • the electric power transformer By the electric power transformer, the flexibility and efficiency of the electric power transmission in a HVDC power transmission system and the control thereof are improved.
  • the electric power transformer may also take part in fulfilling the voltage requirements of the apparatus.
  • the electric power transformer is adapted to isolate the DC-to-DC converter from the AC source.
  • the HVDC transmission line, to which the apparatus is connected is also efficiently isolated from the DC source.
  • the DC-to-DC converter is connectable in series with the HVDC transmission line.
  • the apparatus is adapted for four quadrant operation. Aspects of the four quadrant operation are disclosed in the detailed description of preferred embodiments.
  • the apparatus may be adapted for one quadrant operation, two quadrant operation or three quadrant operation, where the quadrant operation/-s may be any of the first to fourth quadrant opera- tions e.g. as disclosed in the detailed description of preferred embodiments.
  • a high voltage direct current, HVDC, power transmission system comprising at least one HVDC transmission line for carrying direct current and a plurality of converter stations connected to the at least one HVDC transmission line, each of the converter stations being adapted to convert alternating current to direct current for input to the at least one HVDC transmission line, and/or direct current to alternating current
  • the system comprises at least one apparatus as claimed in any of the claims 1 -17, for controlling the electric power transmission in the system, and/or at least one apparatus according to any of the above-men- tioned embodiments of the apparatus.
  • the at least one HVDC transmission line may be one or a plurality of HVDC transmission lines
  • a plurality of HVDC transmission lines or converter stations may be two or more HVDC transmission lines or converter stations, respectively.
  • the at least one apparatus may be one or a plurality of apparatuses, e.g. two or more apparatuses.
  • a plurality of apparatuses may be connected to the same HVDC transmission line, or to different HVDC transmission lines. For example, two apparatuses adapted for two quadrant operation may be connected to the same HVDC transmission line to attain four quadrant operation.
  • the system comprises at least three converter stations.
  • the system comprises at least four converter stations, or at least five converter stations.
  • Fig. 1 is a schematic block diagram illustrating aspects of the
  • Fig 2A is schematic block diagram illustrating a first embodiment of a converter station shown in Fig. 1 ;
  • Fig 2B is schematic block diagram illustrating a second embodiment of a converter station shown in Fig. 1 ;
  • Fig 3 is a schematic block diagram illustrating aspects of the apparatus according to the present invention
  • Fig 4 is a schematic diagram illustrating aspects of the apparatus of Fig. 3 in more detail
  • Figs. 5A-5B are schematic diagrams illustrating the four quadrant opera ⁇ tion of the apparatus of Fig. 4;
  • Fig. 6 is a schematic graph illustrating the first quadrant operation of the apparatus of Fig. 4;
  • Fig. 7 is a schematic diagram illustrating an equivalent circuit for first quadrant operation of the apparatus of Fig. 4.
  • Fig. 8 is a schematic graph illustrating the second quadrant opera ⁇ tion of the apparatus of Fig. 4.
  • Each converter station which may be called a DC Grid converter station, may have asymmetrical monopoles with separate converters for positive and negative polarity, as illustrated in Fig. 2A.
  • each con- verter station may be in the form of a balanced bipolar converter, as illustrated in Fig. 2B.
  • the alternatives of Figs. 2A and 2B may also be combined in the same system.
  • the apparatus 302 according to the present invention is adapted to be electrically connected to the HVDC system, e.g. by being connected between positions A and B as illustrated in Fig. 1 .
  • the apparatus may e.g.
  • the apparatus 302 may comprise a bypass switch 136 (see Fig. 1 ) electrically connectable to the HVDC transmission line 102 to which the apparatus 302 is connected and electrically connected in parallel with a DC-to-DC converter 304 (see Figs. 3 and 4) of the apparatus 302.
  • a bypass switch 136 When the bypass switch 136 is closed, it is adapted to conduct the direct current of HVDC transmission line to electrically bypass the DC-to-DC converter 304.
  • the bypass switch 136 By the bypass switch 136, the DC-to-DC converter 304 and the apparatus 302 may be bypassed during fault conditions.
  • Fig. 3 schematically shows aspects of the apparatus 302 according to the present invention for controlling the electric power transmission in a HVDC power transmission system, e.g. as shown in Fig. 1
  • the apparatus 302 comprises a DC- to-DC converter 304 having two DC sides for output and/or input of direct current and may be adapted to convert direct current from a first voltage level to a second voltage level.
  • the DC-to-DC converter is electrically connectable to the HVDC transmission line 102, and the DC-to-DC converter 304 may be electrically con- nectable in series with the HVDC transmission line 102.
  • the DC-to-DC converter 304 may be adapted to regulate its output voltage.
  • the apparatus 302 comprises a second converter 306 for converting direct current to alternating current and/or alternating current to direct current.
  • the second converter 306 has an AC side 308 for output and/or input of alternating current and a DC side 310 for output and/or input of direct current.
  • the second converter 306 is connected via its DC side 310 to the DC-to-DC converter 304.
  • the DC side 310 of the second converter 306 is adapted to provide direct current to the DC-to-DC converter 304, and/or vice versa.
  • the second converter 306 is connectable via its AC side 308 to an AC source 314.
  • the apparatus 302 may comprise an electric power transformer 312 electrically connected to the AC side 308 of the second converter 306.
  • the electric power transformer 3 2 may be a high frequency transformer.
  • the electric power transformer is electrically connectable to the AC source 314, e.g. an AC grid.
  • An AC grid is well known to the skilled person and therefore not discussed in more detail.
  • the apparatus 302 may comprise the AC source 314.
  • the apparatus 302 is adapted to control the direct current of the HVDC transmission line 102 by introducing a DC voltage in series with the HVDC transmission line 102.
  • the electric power transformer 312 may be adapted to isolate the DC-to-DC converter 304 from the AC source 314, and may thus also be adapted to isolate the HVDC line 102 from the AC source 314.
  • the apparatus 302 is adapted to control the direct current of the HVDC transmission line 102 by introducing a DC voltage V A B in series with the HVDC transmission line 102.
  • the apparatus 302 may comprise control means 316, e.g. a computer or CPU, for controlling the apparatus and its various components.
  • the control means 316 are adapted to control the apparatus 302 to introduce a positive DC voltage, V A B > 0, in series with the HVDC transmission line 102 for reducing the direct current, i.e. he, of the HVDC transmission line 102, and the control means 316 are adapted to control the apparatus 302 to introduce a negative DC voltage, V AB ⁇ 0, in series with the HVDC transmission line 102 for increasing l DC of the HVDC transmission line 102.
  • the second converter 306 may comprise a VSC and may comprise six pairs 402, 404, 406, 408, 410, 412 of electrically intercon- nected electronic control devices 414, 416. Each pair of electronic control devices 414, 416 may comprise an electronic control switch 414 and a diode 416.
  • the DC- to-DC converter 304 may comprise a full-bridge converter.
  • the DC-to-DC converter 304 may comprise four pairs 418, 420, 422, 424, also indicated as
  • Each pair of electronic control devices 426, 428 of the DC-to-DC converter 304 may comprise an electronic control switch 426 and a diode 428.
  • the DC-to-DC converter 304 may comprise filter means 430, 432 connected to the electronic control switches 426, for smoothing out the voltage and current ripple caused by the switching of the electronic control switches 426.
  • the filter means may comprise a filter capacitor 430, also indicated as C ⁇ in Fig. 4, and an inductor 432, also indicated as L f .
  • the filter capacitor 430 may be connected in parallel with the electronic control switches 426, and/or connected in parallel with the four pairs 418, 420, 422, 424 of electronic control devices of the DC-to-DC converter 304.
  • the inductor 432 may be electrically connected in series with the electronic control switches 426, and/or connected in parallel with the four pairs 418, 420, 422, 424 of electronic control devices of the DC-to-DC converter 304.
  • the filter inductor 432 may be connected by connecting one end to the midpoint of a first leg (e.g. common point of 418 and 424) and by connecting the other end to one end of the filter capacitor 430, where the other end of the filter capacitor 430 may be connected between the midpoint of a second leg (e.g.
  • the DC-to-DC converter 304 may also comprise a DC capacitor 434 electrically connected to the electronic control devices of the DC-to-DC converter 304.
  • the second converter 306 may be adapted to control the voltage V dc of the DC capacitor 434.
  • Each of the above-mentioned electronic control switches may comprise a transistor, e.g. an IGBT, a BIGT or any other suitable transistor.
  • each of the above-mentioned electronic control switches may comprise a thyristor, e.g. a GTO, an IGCT, or a Forced Commutated Thyristor.
  • the four quadrant operation of the apparatus may be supported by bidirectional valves.
  • the injected voltage V A B may be regulated to a desired value or level in an efficient way. PWM switching per se is well known to the skilled person and is thus not discussed in further detail.
  • the power requirement of DC-to-DC converter 304 is supplied from the second con- verter 306 which in turn is supplied from the AC source 314 via the transformer 312.
  • the VSC of the second converter 306 may comprise at least two legs which convert direct current to alternating current and/or vice-versa.
  • active power should be absorbed by the AC source 314, and to effect or introduce a negative fictive resistance, -ARjnj, ac- tive power should be injected by and from the AC source 314.
  • the apparatus 302 can operate in all the four quadrants as shown in Figs. 5A and 5B, the voltage and current polarity being as shown in Fig. 1 , 3 or 4.
  • the first quadrant operation current is flowing from position A to position Y. Since the voltage/potential in position A is greater than in position Y, in order to operate the first quadrant the diodes D D 2 should be forward-biased. This will result in the voltage V dc across positions A-B.
  • zero voltage is inserted by bypassing the DC capacitor 434.
  • the HVDC line current is flowing from position A to position Y. Since voltage in position A is greater than in position B, the diodes D and D 2 should be forward-biased.
  • the equivalent circuit for the first qua- drant operation is given in Fig. 7, where Vi is the voltage in position A, V 2 is the voltage in position Y, and V dc is the DC capacitor voltage V dc .
  • Station 1 in Fig. 7 may correspond to a converter station on the left side in Fig. 3, and station 2 may correspond to a converter station on the right side in Fig. 3.
  • the voltage over positions A-B should be a positive voltage. Kirchoff's voltage law for the first quadrant operation for forward-biasing may be given as
  • the DC capacitor voltage V dc may be maintained at a desired level by the second converter 306.
  • the second converter 306 may act as an inverter when the DC-to-DC converter 304 is working in the first or third quadrant, i.e. the power absorbed by the DC-to-DC converter 304 should be taken out from the DC capacitor 434.
  • the DC capacitor 434 should be replenished by the second converter 306 and will thus act as a rectifier.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

L'invention concerne un appareil (302) destiné à commander la transmission de l'énergie électrique sur un système de transmission de courant continu à haute tension (HVDC) comprenant au moins une ligne de transmission HVDC (102, 104, 106, 108, 110, 112, 114) transportant un courant continu. L'appareil (302) comprend un convertisseur continu-continu (304) et un second convertisseur (306) destiné à convertir le courant alternatif en courant continu et/ou le courant continu en courant alternatif. Le convertisseur continu-continu possède deux côtés continus pour la sortie et/ou l'entrée de courant continu. Le second convertisseur possède un côté alternatif (308) pour la sortie et/ou l'entrée de courant alternatif et un côté continu (310) pour la sortie et/ou l'entrée de courant continu. Le convertisseur continu-continu peut être connecté à la ligne de transmission HVDC (102) et le second convertisseur est connecté par son côté continu au convertisseur continu-continu. Le second convertisseur peut être connecté par son côté alternatif à une source de courant alternatif (314) et l'appareil est conçu pour commander le courant continu de la ligne de transmission HVDC en introduisant une tension continue en série avec la ligne de transmission HVDC. L'invention concerne en outre un système de transmission électrique HVDC comprenant l'appareil (302) ci-dessus.
PCT/EP2010/063878 2010-09-21 2010-09-21 Convertisseur continu-continu connecté en série pour commander la répartition des charges sur un système de transmission électrique hvdc WO2012037964A1 (fr)

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Cited By (15)

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WO2013091700A1 (fr) * 2011-12-21 2013-06-27 Abb Technology Ltd Agencement de gestion de transport d'énergie électrique dans un système de transport de courant continu haute tension (hvdc)
CN103326392A (zh) * 2013-06-24 2013-09-25 南方电网科学研究院有限责任公司 一种特高压直流输电换流阀组系统可靠性计算方法
US20130258724A1 (en) * 2012-03-28 2013-10-03 General Electric Company High voltage direct current system
CN103427434A (zh) * 2013-08-12 2013-12-04 浙江大学 一种混合双极直流输电系统直流侧谐波电流的计算方法
CN103427433A (zh) * 2013-08-12 2013-12-04 浙江大学 一种混合双极直流输电系统直流回路阻抗的计算方法
CN103475016A (zh) * 2013-05-30 2013-12-25 广东电网公司江门供电局 高压直流输电工程中换流站的仿真方法
CN103606945A (zh) * 2013-11-19 2014-02-26 国家电网公司 一种多端柔性直流输电系统的控制系统及其控制方法
CN103618333A (zh) * 2013-12-03 2014-03-05 荣信电力电子股份有限公司 一种模块化多电平换流器的直流侧充电方法
CN104377720A (zh) * 2014-11-05 2015-02-25 无锡中汇汽车电子科技有限公司 一种基于mmc变流站的直流输电潮流控制方法
CN104393613A (zh) * 2014-11-05 2015-03-04 南京南瑞继保电气有限公司 直流故障处理方法及装置
WO2015032421A1 (fr) 2013-09-03 2015-03-12 Abb Technology Ltd Convertisseur de source de courant en série hvdc
CN104426158A (zh) * 2013-08-21 2015-03-18 Abb技术有限公司 直流输电分层接入系统及方法
CN104505847A (zh) * 2014-12-31 2015-04-08 上海电力学院 一种基于滑模控制的微网下垂控制优化方法
CN105548661A (zh) * 2016-02-02 2016-05-04 中国南方电网有限责任公司超高压输电公司 一种特高压直流输电系统直流线路电压波动的监视方法
CN114928094A (zh) * 2022-07-18 2022-08-19 中国长江三峡集团有限公司 一种直流潮流控制器、控制方法及装置

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WO2013091700A1 (fr) * 2011-12-21 2013-06-27 Abb Technology Ltd Agencement de gestion de transport d'énergie électrique dans un système de transport de courant continu haute tension (hvdc)
US20130258724A1 (en) * 2012-03-28 2013-10-03 General Electric Company High voltage direct current system
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CN103427434A (zh) * 2013-08-12 2013-12-04 浙江大学 一种混合双极直流输电系统直流侧谐波电流的计算方法
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CN104426158A (zh) * 2013-08-21 2015-03-18 Abb技术有限公司 直流输电分层接入系统及方法
US9461555B2 (en) 2013-09-03 2016-10-04 Abb Technology Ltd HVDC series current source converter
WO2015032421A1 (fr) 2013-09-03 2015-03-12 Abb Technology Ltd Convertisseur de source de courant en série hvdc
CN103606945A (zh) * 2013-11-19 2014-02-26 国家电网公司 一种多端柔性直流输电系统的控制系统及其控制方法
CN103618333A (zh) * 2013-12-03 2014-03-05 荣信电力电子股份有限公司 一种模块化多电平换流器的直流侧充电方法
CN104377720A (zh) * 2014-11-05 2015-02-25 无锡中汇汽车电子科技有限公司 一种基于mmc变流站的直流输电潮流控制方法
CN104393613A (zh) * 2014-11-05 2015-03-04 南京南瑞继保电气有限公司 直流故障处理方法及装置
CN104505847A (zh) * 2014-12-31 2015-04-08 上海电力学院 一种基于滑模控制的微网下垂控制优化方法
CN104505847B (zh) * 2014-12-31 2016-09-14 上海电力学院 一种基于滑模控制的微网下垂控制优化方法
CN105548661A (zh) * 2016-02-02 2016-05-04 中国南方电网有限责任公司超高压输电公司 一种特高压直流输电系统直流线路电压波动的监视方法
CN114928094A (zh) * 2022-07-18 2022-08-19 中国长江三峡集团有限公司 一种直流潮流控制器、控制方法及装置
CN114928094B (zh) * 2022-07-18 2023-01-17 中国长江三峡集团有限公司 一种直流潮流控制器、控制方法及装置

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