WO2008061924A2 - Vorrichtung zur flexiblen energieübertragung und zum enteisen einer hochspannungsleitung mittels gleichstrom - Google Patents
Vorrichtung zur flexiblen energieübertragung und zum enteisen einer hochspannungsleitung mittels gleichstrom Download PDFInfo
- Publication number
- WO2008061924A2 WO2008061924A2 PCT/EP2007/062324 EP2007062324W WO2008061924A2 WO 2008061924 A2 WO2008061924 A2 WO 2008061924A2 EP 2007062324 W EP2007062324 W EP 2007062324W WO 2008061924 A2 WO2008061924 A2 WO 2008061924A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- point
- zero
- tcr
- branch
- power semiconductor
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
-
- 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
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
-
- 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 invention relates to a device for flexible power transmission and defrosting a multi-phase high voltage line by means of direct current with an AC terminal of the high voltage line having a phase corresponding to the phases of the high voltage line number of phases, each phase at least one inductance and a valve circuit in series with each inductance wherein the valve circuit is connected by means of a branch point with the AC voltage terminal and having a first branch with a first power semiconductor valve and a second branch with a second power semiconductor valve, wherein the power semiconductor valves are connected in opposite directions with respect to the branch point and wherein the first and the second Current branch can be connected to a TCR star point by means of at least one star point switch,
- Such a device is already known from WO 2006/027376 Al. There, both the mode of action of a so-called high-voltage direct-current transmission system and the mode of action of a so-called thyristor-controlled reactor, TCR for short, is described. Furthermore, it is disclosed that a high-voltage direct current transmission system (HVDC system) can be converted by means of a switch arrangement into a TCR or a TCR into an HVDC system.
- the previously known device has an AC voltage connection and a DC connection, between which a polyphase series circuit is connected. In this case, each phase of the series connection has at least one inductor and one Valve circuit on.
- the valve circuit has a branch point which splits the current path in a first branch and in a second branch.
- Each branch is equipped with a power semiconductor valve, wherein the valves are oriented with respect to the distribution point in opposite directions to each other.
- the first current branch and the second current branch of all phases can be connected to one another via a star point switch, so that a TCR star point is formed.
- a star point switch When the star point switch is open, a converter of a so-called six-pulse bridge circuit is realized, with which a rectification of the AC voltage provided by the AC voltage connection is made possible. The direct current generated in this way can then be fed into a high-voltage line for deicing.
- the previously known device has the disadvantage that in the selected star point circuit, the odd multiples of the third harmonic of the rated current are generated. However, feeding these harmonics into the connected AC network is undesirable. In addition, due to the star connection, the phase currents can not form independently of one another, so that the regulation of the TCR operation of the previously known device is impaired.
- Devices of the type mentioned are used for example for deicing of high voltage power lines.
- high voltage lines such as outdoor lines, which are used for the transmission of alternating currents, charged by snow and ice on the high voltage line.
- the weight of this ice can be up to a few tons and cause mechanical damage to the power line.
- a DC current can be injected in a controlled manner into the high-voltage line. warmed and thus causes melting and falling of the snow or ice.
- DC is better than AC, as it can be better controlled.
- the object of the invention is to provide a device of the type mentioned, which is simple and at the same time inexpensive in their construction.
- the invention solves this problem in that the TCR star point is connected via a connecting line to a neutral point of a zero-system suppression means.
- the device according to the invention like the generic device, has two operating modes.
- TCR operation reactive power is absorbed from the high voltage line to which the device according to the invention is connected.
- HVDC operation on the other hand, a direct current can be specifically coupled into the connected high-voltage line.
- the phases of the device in TCR operation are connected in star connection with each other, although it is pointed out in WO 2006/027376 Al that the star connection has the disadvantage that this third or ninth harmonic harmonics of the rated current is not suppressed or absorbed so that these harmonics can flow unhindered into the connected AC mains.
- the TCR star point is connected to a neutral point of a zero-system suppression means in the context of the invention.
- the zero-sys- temstrom thus flows through the star point of the TCR to the neutral point of the zero-system suppression means, which prevents the introduction of zero system currents in the launched alternating voltage network. In this way, a time-consuming delta connection with many circuit breakers in the wake can be avoided.
- the device according to the invention is therefore simple in construction and inexpensive.
- the zero system current in TCR operation flows through the earth from the TCR neutral point to the grounding point of the zero system suppression means and from the zero suppression means via the closed neutral point switches back to the star point of the TCR, so that there is a closed circuit. Furthermore, according to the invention, an additional current path is provided which has such a low impedance for the zero system current that a supply of zero system currents to the connected high voltage line is avoided.
- connection line is a ground connection.
- the TCR star point as well as the neutral point of the zero-system suppression means are grounded.
- the connecting line is a metallic connecting line.
- the zero system suppression means is a transformer having a primary winding in delta connection and a secondary winding in star connection. If the connection line is a ground connection, both the TCR star point and the star point of the secondary winding are earthed. In TCR operation, the zero system thus flows from the TCR neutral point to the transformer, with the primary winding of the transformer, which has a triangular circuit, carrying the Supply of zero system currents in the connected AC mains prevented.
- the zero-system suppression means is at least one zero-system filter.
- the zero-sequence filter for example, tuned to the third harmonic in terms of low impedance and has a useful interconnection of inductors and capacitors.
- the zero-sequence filter has a number of phases corresponding to the phases of the high-voltage line, the phases of the zero-sequence filter being connected to one another in a star point. Said star point is connected to the TCR star point either via a metallic connecting line or via ground fault. In other words, the neutral point of the zero system filter is grounded.
- Zero-system filters are known as such to the person skilled in the art, so that they need not be discussed further here. In the case of closed neutral point switches, therefore, a zero impedance circuit is provided by the device according to the invention for the zero system currents.
- each phase has a plurality of inductances, wherein at least one inductance can be bridged by means of a bypass switch.
- TCR operation the additional inductances are not bridged, with the increased inductance having a positive effect on the operation of the device.
- HVDC operation it is expedient to reduce the inductance by bridging at least one of the additional inductances.
- filter means for suppressing the fifth, seventh and or twelfth harmonic are provided.
- the additional filter means prevent ne load of connectable with the device high voltage line with the said overshoots, which are not part of the zero system.
- Figure 1 shows a first embodiment of the device according to the invention
- Figure 2 show a second embodiment of the inventive device.
- Figure 1 shows a first embodiment of the device 1 according to the invention, which has a transformer 2 as an AC voltage connection.
- the transformer 2 is used to connect the device 1 according to the invention with a multi-phase high-voltage line (not shown in FIG. 1).
- the device 1 therefore also has several phases, of which only one phase is shown in FIGS. 1 and 2 for reasons of clarity. As a rule, the device according to the invention has three phases.
- the transformer 2 has a primary winding 3 and a secondary winding 4.
- the phases of the primary winding 3 are interconnected in a so-called triangle.
- the phases of the secondary winding 4 form a common star point with each other, which is grounded.
- the device 1 according to the invention furthermore has a series circuit 5 which has an inductance 6 and an inductance 7. has. Parallel to the inductance 7, a bypass switch 8 is provided, which is arranged in a bridging branch 9.
- the series circuit 5 further has a valve circuit 10 with a branching point 11, which is arranged between two power semiconductor valves 12 and 13.
- the power semiconductor valves 12 and 13 are arranged opposite to each other with respect to the branching point 11.
- the power semiconductor valve 12 is in a first branch
- the power semiconductor valve 13 is arranged in a second current branch 15, the current branches 14 and 15 being connected via a first disconnector 16 or via a second disconnector 17 to a TCR star point 18.
- FIG. 1 it is indicated that the phases not shown there, with their valve circuit 10, can likewise be connected to the TCR star point 18.
- the TCR star point 18 is earthed.
- the device 1 is shown with the closed switches 16 and 17, is thus in the so-called TCR operation and serves to absorb reactive power from the multiphase high voltage line. For this reason, the bypass switch 8 is opened, so that in the series circuit 5, an increased inductance is provided, which is advantageous for the TCR operation of the device 1.
- additional filter means 19 are provided, which are known to those skilled in the art, so that need not be discussed here at this point.
- the additional filter means 19 are not grounded, for example.
- the harmonics of the counter and co-system lift each other up.
- the zero system flows through the designed as a ground fault connection line from TCR star point 18 to the neutral point of the secondary winding 4 and from there, for example, back to the series circuit 5, so that a closed circuit is provided with low impedance.
- the triangular connection of the phases of the primary winding 3 prevents the introduction of zero system currents in the high voltage line.
- FIG. 1 the HVDC operation of the device 1 according to the invention is further indicated.
- a bus bar 20 is only virtually extended by a dashed line.
- the HVDC operation of the device 1 is illustrated at the end of this dashed line on the right.
- the switches 16 and 17 are open.
- the first current branch 14 is no longer connected to the second current branch 15 and thus no longer connected to the TCR star point 18.
- the bypass switch 8 is closed, so that the inductance 7 of the series circuit 5 is reduced as compared with the TCR operation of the device 1.
- the power semiconductor valves 12 and 13 no longer act as birichale switches, but as current valves of a six-pulse bridge circuit, so that a so-called rectifier is provided.
- the current branches 14 and 15 thus form DC connections of the device 1.
- smoothing choke is used to smooth the rectified current.
- the DC current can now be coupled into the high voltage line and can be used there to melt snow and ice.
- FIG. 2 shows a further exemplary embodiment of the device 1 according to the invention.
- the device 1 according to the invention differs from the exemplary embodiment shown in FIG. 1 in that the star point of the secondary winding ment 4 in contrast to Figure 1 is no longer grounded. Instead, a zero-sequence filter 21 is provided whose phases are interconnected to form a filter star point 22. The filter star point 22 is grounded. The null system may thus flow in TCR operation from the TCR star point 18 to the filter star point 22 via ground, with the zero system filter 21 forming a low impedance current path for the third harmonic of the current and thus suppressing the loads imposed by the zero system.
- zero-sequence filters 21 which are tuned to other harmonics, for example the ninth harmonic harmonic. It is essential that all zero-sequence filters have a grounded star point or a star point, which is metallically connected to the star point of the TCR, so that a closed circuit is provided by the device according to the invention, which has a low impedance for zero system currents.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Ac-Ac Conversion (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0908709.9A GB2456460B (en) | 2006-11-21 | 2007-11-14 | [Apparatus for flexible power transmission and for deicing of a high-voltage line by means of direct current |
US12/515,027 US8264102B2 (en) | 2006-11-21 | 2007-11-14 | Device for flexible power transmission and deicing of a high-voltage power line by means of direct current |
SE0950466A SE534603C2 (sv) | 2006-11-21 | 2007-11-14 | Anordning för flexibel kraftöverföring och för avisning av en högspänningsledning genom likström |
CN200780043255.4A CN101542886B (zh) | 2006-11-21 | 2007-11-14 | 用于柔性能量传输和借助直流电流对高压导线去冰的装置 |
CA2670452A CA2670452C (en) | 2006-11-21 | 2007-11-14 | Apparatus for flexible power transmission and for deicing of a high-voltage line by means of direct current |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006055575.9 | 2006-11-21 | ||
DE102006055575.9A DE102006055575B4 (de) | 2006-11-21 | 2006-11-21 | Vorrichtung zur flexiblen Energieübertragung und zum Enteisen einer Hochspannungsleitung mittels Gleichstrom |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008061924A2 true WO2008061924A2 (de) | 2008-05-29 |
WO2008061924A3 WO2008061924A3 (de) | 2008-08-14 |
Family
ID=38996592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/062324 WO2008061924A2 (de) | 2006-11-21 | 2007-11-14 | Vorrichtung zur flexiblen energieübertragung und zum enteisen einer hochspannungsleitung mittels gleichstrom |
Country Status (8)
Country | Link |
---|---|
US (1) | US8264102B2 (de) |
CN (1) | CN101542886B (de) |
CA (1) | CA2670452C (de) |
DE (1) | DE102006055575B4 (de) |
GB (1) | GB2456460B (de) |
RU (1) | RU2457605C2 (de) |
SE (1) | SE534603C2 (de) |
WO (1) | WO2008061924A2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101986092A (zh) * | 2010-01-27 | 2011-03-16 | 北京理工大学 | 一种去除输电线覆冰的发射型爆震药管 |
CN103222145A (zh) * | 2010-07-20 | 2013-07-24 | 恩普里默斯有限责任公司 | 用于电力系统保护的连续不间断ac接地系统 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI123844B (fi) * | 2010-04-14 | 2013-11-15 | Alstom Technology Ltd | Järjestely ja menetelmä loistehon kompensoimiseksi |
FR2958887B1 (fr) * | 2010-04-19 | 2015-07-03 | Alstom Transport Sa | Procede de degivrage d'une ligne d'alimentation de vehicules ferroviaires |
CN102208791B (zh) * | 2011-02-23 | 2014-01-15 | 苏州蓝特照明科技有限公司 | 一种高压输电线路除霜装置 |
CN102331532B (zh) * | 2011-05-19 | 2013-08-28 | 南方电网科学研究院有限责任公司 | 一种直流融冰装置等效试验方法 |
US9048649B2 (en) * | 2012-03-20 | 2015-06-02 | The Boeing Company | Method and apparatus for anti-icing and deicing power transmission lines |
ES2641645T3 (es) | 2012-05-30 | 2017-11-10 | Siemens Aktiengesellschaft | Instalación de conmutación |
CN106786298B (zh) * | 2016-11-16 | 2018-10-23 | 国网山东省电力公司荣成市供电公司 | 一种高压输电线路自发热除冰系统 |
CN109103861A (zh) * | 2018-08-13 | 2018-12-28 | 广州供电局有限公司 | 抑制交流变压器中性点直流电流以及交流电流的装置 |
CN111431125B (zh) * | 2020-05-11 | 2021-04-16 | 广东电网有限责任公司清远供电局 | 一种在线融冰装置 |
CN113300307B (zh) * | 2021-04-29 | 2022-12-27 | 珠海万力达电气自动化有限公司 | 一种具有双网融冰功能的铁路电力系统互联装备及控制方法 |
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SU664124A1 (ru) * | 1973-07-02 | 1979-05-25 | Abdulrakhmanov Kadir A | Способ телеконтрол величины напр жени на зажимах трехфазных асинхронных двигателей |
SU888265A1 (ru) * | 1976-04-26 | 1981-12-07 | Львовский Ордена Ленина Политехнический Институт | Электрическа сеть |
DD154658A1 (de) * | 1980-11-17 | 1982-04-07 | Peter Buechner | Anordnung zur verringerung von stromrichter-netzrueckwirkungen in der anschlussspannung |
JP2000014006A (ja) * | 1998-06-17 | 2000-01-14 | Nissin Electric Co Ltd | 高調波フィルタ |
WO2006027376A1 (en) * | 2004-09-10 | 2006-03-16 | Areva T & D Uk Limited | Convertible high voltage direct current installation |
Family Cites Families (6)
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GB1034341A (en) * | 1962-04-06 | 1966-06-29 | English Electric Co Ltd | Improvements in and relating to electrical filters |
US4096431A (en) * | 1976-03-29 | 1978-06-20 | Asea Aktiebolag | Disconnecting thyristors from thyristor controlled reactance |
US4126792A (en) * | 1976-12-08 | 1978-11-21 | Genrikh Georgy A | High-voltage network for areas of increased intensity of icing |
US4082962A (en) * | 1977-07-11 | 1978-04-04 | Burgsdorf Vladimir Vladimirovi | Device for melting the icing by direct current on conductors of overhead power transmission line |
JP2676937B2 (ja) * | 1989-08-30 | 1997-11-17 | 富士電機株式会社 | 高調波補償装置 |
RU2235397C2 (ru) * | 2002-04-11 | 2004-08-27 | Открытое акционерное общество "Научно-исследовательский институт по передаче электроэнергии постоянным током высокого напряжения" | Установка для плавки гололеда |
-
2006
- 2006-11-21 DE DE102006055575.9A patent/DE102006055575B4/de not_active Expired - Fee Related
-
2007
- 2007-11-14 RU RU2009123500/07A patent/RU2457605C2/ru active
- 2007-11-14 WO PCT/EP2007/062324 patent/WO2008061924A2/de active Application Filing
- 2007-11-14 US US12/515,027 patent/US8264102B2/en not_active Expired - Fee Related
- 2007-11-14 GB GB0908709.9A patent/GB2456460B/en not_active Expired - Fee Related
- 2007-11-14 CA CA2670452A patent/CA2670452C/en active Active
- 2007-11-14 SE SE0950466A patent/SE534603C2/sv not_active IP Right Cessation
- 2007-11-14 CN CN200780043255.4A patent/CN101542886B/zh not_active Expired - Fee Related
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SU664124A1 (ru) * | 1973-07-02 | 1979-05-25 | Abdulrakhmanov Kadir A | Способ телеконтрол величины напр жени на зажимах трехфазных асинхронных двигателей |
SU888265A1 (ru) * | 1976-04-26 | 1981-12-07 | Львовский Ордена Ленина Политехнический Институт | Электрическа сеть |
DD154658A1 (de) * | 1980-11-17 | 1982-04-07 | Peter Buechner | Anordnung zur verringerung von stromrichter-netzrueckwirkungen in der anschlussspannung |
JP2000014006A (ja) * | 1998-06-17 | 2000-01-14 | Nissin Electric Co Ltd | 高調波フィルタ |
WO2006027376A1 (en) * | 2004-09-10 | 2006-03-16 | Areva T & D Uk Limited | Convertible high voltage direct current installation |
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BOSHOFF S ET AL: "Digital And Real Tiime Studies Of The Eskom Svcs" AC AND DC POWER TRANSMISSION, SIXTH INTERNATIONAL CONFERENCE ON (CONF. PUBL. NO. 423), IEE, 1. Januar 1996 (1996-01-01), Seiten 363-368, XP006506968 ISBN: 978-0-85296-654-9 * |
GARDNER D ET AL: "Digital computer studies and some test results for a static VAr compensator in the UK transmission network" AC AND DC POWER TRANSMISSION, 1991., INTERNATIONAL CONFERENCE ON LONDON, UK, LONDON, UK,IEE, UK, 1. Januar 1991 (1991-01-01), Seiten 319-324, XP006516032 ISBN: 978-0-85296-517-7 * |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101986092A (zh) * | 2010-01-27 | 2011-03-16 | 北京理工大学 | 一种去除输电线覆冰的发射型爆震药管 |
CN103222145A (zh) * | 2010-07-20 | 2013-07-24 | 恩普里默斯有限责任公司 | 用于电力系统保护的连续不间断ac接地系统 |
Also Published As
Publication number | Publication date |
---|---|
WO2008061924A3 (de) | 2008-08-14 |
DE102006055575A1 (de) | 2008-05-29 |
GB0908709D0 (en) | 2009-07-01 |
CN101542886A (zh) | 2009-09-23 |
CN101542886B (zh) | 2013-02-27 |
SE534603C2 (sv) | 2011-10-18 |
SE0950466L (sv) | 2009-06-16 |
CA2670452C (en) | 2017-04-04 |
US8264102B2 (en) | 2012-09-11 |
CA2670452A1 (en) | 2008-05-29 |
RU2009123500A (ru) | 2010-12-27 |
DE102006055575B4 (de) | 2016-12-08 |
RU2457605C2 (ru) | 2012-07-27 |
GB2456460B (en) | 2012-08-08 |
GB2456460A (en) | 2009-07-22 |
US20100033028A1 (en) | 2010-02-11 |
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