DK2036181T3 - HVDC-system og fremgangsmåde til at styre en spændingskildeomformer i et HVDC-system - Google Patents
HVDC-system og fremgangsmåde til at styre en spændingskildeomformer i et HVDC-systemInfo
- Publication number
- DK2036181T3 DK2036181T3 DK07765412.7T DK07765412T DK2036181T3 DK 2036181 T3 DK2036181 T3 DK 2036181T3 DK 07765412 T DK07765412 T DK 07765412T DK 2036181 T3 DK2036181 T3 DK 2036181T3
- Authority
- DK
- Denmark
- Prior art keywords
- hvdc system
- voltage source
- source converter
- controlling
- network
- Prior art date
Links
Classifications
-
- 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
- H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; 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 high-voltage DC [HVDC] links; Arrangements for transfer of electric power between generators and networks via HVDC links
-
- 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
- H02M7/66—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal
- H02M7/68—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters
- H02M7/72—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal 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
- H02M7/797—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal 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
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Rectifiers (AREA)
- Ac-Ac Conversion (AREA)
- Dc-Dc Converters (AREA)
- Emergency Protection Circuit Devices (AREA)
- Generation Of Surge Voltage And Current (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US81735206P | 2006-06-30 | 2006-06-30 | |
| PCT/EP2007/055875 WO2008000626A1 (en) | 2006-06-30 | 2007-06-14 | Hvdc system and method to control a voltage source converter in a hvdc system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK2036181T3 true DK2036181T3 (da) | 2011-05-02 |
| DK2036181T4 DK2036181T4 (da) | 2017-06-19 |
Family
ID=38666872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK07765412.7T DK2036181T4 (da) | 2006-06-30 | 2007-06-14 | Hvdc-system og fremgangsmåde til at styre en spændingskildeomformer i et hvdc-system |
Country Status (10)
| Country | Link |
|---|---|
| US (2) | US8760888B2 (da) |
| EP (1) | EP2036181B2 (da) |
| JP (2) | JP4673428B2 (da) |
| CN (2) | CN101479910B (da) |
| AT (1) | ATE475216T1 (da) |
| DE (1) | DE602007007949D1 (da) |
| DK (1) | DK2036181T4 (da) |
| ES (1) | ES2370357T5 (da) |
| PT (1) | PT2036181E (da) |
| WO (1) | WO2008000626A1 (da) |
Families Citing this family (58)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SE0900830L (sv) * | 2009-06-18 | 2009-06-29 | Abb Technology Ag | Styrning av en växelriktaranordning för att stödja ett växelströmssystem |
| WO2011000428A1 (en) * | 2009-07-02 | 2011-01-06 | Abb Technology Ag | Power converter with multi-level voltage output and harmonics compensator |
| US9198972B2 (en) | 2010-01-28 | 2015-12-01 | Alnylam Pharmaceuticals, Inc. | Monomers and oligonucleotides comprising cycloaddition adduct(s) |
| WO2012000548A1 (en) | 2010-06-30 | 2012-01-05 | Abb Technology Ag | A multi-terminal dc transmission system and method and means for control thereof |
| CN102959822B (zh) | 2010-06-30 | 2016-06-15 | Abb研究有限公司 | 用于控制dc电力传输网内的电力流的方法和控制装置 |
| CN103153958A (zh) | 2010-07-02 | 2013-06-12 | 先正达参股股份有限公司 | 新颖的杀微生物的二肟醚衍生物 |
| CN103119821B (zh) * | 2010-09-30 | 2016-01-13 | Abb研究有限公司 | 多端hvdc系统的协调控制 |
| US8624431B2 (en) | 2011-02-26 | 2014-01-07 | General Electric Company | System and method for power sharing of front-end converters without communication link in a modular-stacked DC transmission system |
| US20130055014A1 (en) * | 2011-08-29 | 2013-02-28 | General Electric Company | Analytical and Combinatorial Fault Restoration |
| PL2597746T3 (pl) * | 2011-11-23 | 2021-10-18 | Siemens Energy Global GmbH & Co. KG | Sposób sterowania mocą wejściową łącza przesyłowego HVDC |
| KR101291418B1 (ko) * | 2011-12-28 | 2013-07-30 | 주식회사 효성 | Hvdc 시스템의 전압원 컨버터 제어 방법 및 장치 |
| CN102739030A (zh) * | 2012-07-04 | 2012-10-17 | 浙江省电力试验研究院技术服务中心 | 一种全桥型mmc-hvdc的启动方法 |
| US9042129B2 (en) * | 2012-11-15 | 2015-05-26 | General Electric Company | System and method for controlling power in a distribution system |
| CN103036460B (zh) * | 2012-11-26 | 2014-10-22 | 天津大学 | 一种三电平电压源型变换器模型预测控制方法 |
| US9099936B2 (en) * | 2013-03-14 | 2015-08-04 | General Electric Company | High voltage direct current (HVDC) converter system and method of operating the same |
| US8841787B1 (en) | 2013-03-15 | 2014-09-23 | Caterpillar Inc. | Generator set adaptive droop control method |
| US9997918B1 (en) | 2013-06-28 | 2018-06-12 | Atlantic Grid Holdings Llc | Systems and method for HVDC transmission |
| CN103647304B (zh) * | 2013-12-27 | 2016-04-20 | 国家电网公司 | 一种有外部支援的电网黑启动子系统并列方法 |
| KR101582850B1 (ko) * | 2013-12-30 | 2016-01-07 | 주식회사 효성 | Hvdc 시스템의 전원 이중화 장치 및 그 제어방법 |
| EP2897245B1 (en) * | 2014-01-17 | 2017-07-26 | General Electric Technology GmbH | Multi-terminal DC electrical network |
| EP2916442B1 (en) * | 2014-03-04 | 2019-07-24 | General Electric Technology GmbH | A voltage source converter |
| US9602021B2 (en) | 2014-03-07 | 2017-03-21 | General Electric Company | Hybrid high voltage direct current converter system and method of operating the same |
| US9515565B2 (en) | 2014-03-07 | 2016-12-06 | General Electric Company | Hybrid high voltage direct current converter systems |
| KR101819267B1 (ko) | 2014-03-17 | 2018-01-16 | 엘에스산전 주식회사 | 전압형 컨버터의 제어 장치 및 그 동작 방법 |
| KR101604906B1 (ko) * | 2014-05-13 | 2016-03-18 | 엘에스산전 주식회사 | 고전압 직류 송전 시스템 |
| KR101569622B1 (ko) | 2014-05-14 | 2015-11-16 | 엘에스산전 주식회사 | 컨버터 및 그 동작 방법 |
| CN104052077B (zh) * | 2014-07-04 | 2016-03-02 | 南京南瑞继保电气有限公司 | 一种直流输电逆变侧频率控制方法 |
| EP3026803A1 (en) | 2014-11-25 | 2016-06-01 | Alstom Technology Ltd | Start-up of HVDC converters |
| US10008854B2 (en) | 2015-02-19 | 2018-06-26 | Enphase Energy, Inc. | Method and apparatus for time-domain droop control with integrated phasor current control |
| EP3070803B1 (en) | 2015-03-19 | 2018-10-17 | General Electric Technology GmbH | Power transmission network |
| EP3070807B1 (en) * | 2015-03-19 | 2020-09-09 | General Electric Technology GmbH | Power transmission network |
| CN105024603B (zh) * | 2015-07-20 | 2018-08-28 | 天津市明硕科技发展有限责任公司 | 一种无刷励磁黑起励电路 |
| KR101792874B1 (ko) * | 2015-12-30 | 2017-11-01 | 주식회사 효성 | Hvdc 시스템의 이중화 제어장치 및 제어방법 |
| KR102546644B1 (ko) | 2016-03-29 | 2023-06-21 | 엘에스일렉트릭(주) | 하이브리드 전력 저장 장치 |
| EP3225536B1 (fr) | 2016-03-31 | 2020-11-25 | GE Energy Power Conversion Technology Ltd | Système de distribution d'énergie électrique, procédé d'alimentation d'une charge correspondant, système et procédé de propulsion pour navire |
| CN108701995B (zh) * | 2016-05-04 | 2022-06-03 | 日立能源瑞士股份公司 | 功率转换电路、电力系统及其方法 |
| US10635159B2 (en) * | 2016-05-27 | 2020-04-28 | Qualcomm Incorporated | Adaptive voltage modulation circuits for adjusting supply voltage to reduce supply voltage droops and minimize power consumption |
| JP6730946B2 (ja) * | 2017-02-09 | 2020-07-29 | 株式会社東芝 | 電力変換器の制御装置 |
| WO2018188725A1 (en) * | 2017-04-10 | 2018-10-18 | Abb Schweiz Ag | Power transmission system and a method in a power transmission system |
| CN107045092B (zh) * | 2017-05-16 | 2023-04-07 | 广东电网有限责任公司惠州供电局 | 一种站用变低压交流环网智能检测装置和方法 |
| WO2018210424A1 (en) * | 2017-05-18 | 2018-11-22 | Abb Schweiz Ag | Determining setpoint parameters for controlling an hvdc link |
| WO2019024999A1 (en) | 2017-08-03 | 2019-02-07 | Abb Schweiz Ag | CONTROLLING A VOLTAGE SOURCE CONVERTER OF A CONTINUOUS CURRENT SYSTEM |
| CN109428341B (zh) * | 2017-09-05 | 2021-12-10 | 南京南瑞继保电气有限公司 | 一种直流电压协调控制方法 |
| TWI791745B (zh) * | 2018-01-25 | 2023-02-11 | 丹麥商維斯塔斯風力系統有限公司 | 用於進行全黑啟動操作之方法及系統以及風力機 |
| CN109149618B (zh) * | 2018-09-11 | 2020-03-17 | 北京交通大学 | 一种交直流混联电力系统并行恢复优化决策方法 |
| CN109638889B (zh) * | 2019-01-15 | 2023-09-05 | 广东志成冠军集团有限公司 | 海岛柴储混合供电系统的直流侧惯性增强控制方法 |
| US11031773B2 (en) * | 2019-03-27 | 2021-06-08 | Abb Power Grids Switzerland Ag | Transformer isolation response using direct current link |
| WO2020217428A1 (ja) * | 2019-04-25 | 2020-10-29 | 三菱電機株式会社 | 制御装置 |
| EP3961904B1 (en) | 2019-04-25 | 2025-10-22 | Mitsubishi Electric Corporation | Control device |
| US10962577B2 (en) * | 2019-05-01 | 2021-03-30 | Universidade Federal Do Rio De Janeiro | Frequency stability contribution measurement equipment |
| CN111082442B (zh) * | 2019-12-06 | 2022-10-18 | 昆明理工大学 | 一种基于改进fpa的储能容量优化配置方法 |
| FI3869682T3 (fi) * | 2020-02-24 | 2024-07-10 | Danfoss As | Menetelmä ja ohjauslaite tehonmuuntimen säätämiseksi |
| CN111722582B (zh) * | 2020-06-18 | 2021-06-08 | 常熟理工学院 | 船用发电机开关和汇流排开关的合闸控制逻辑计算方法 |
| CN112564096A (zh) * | 2020-12-01 | 2021-03-26 | 西安交通大学 | 一种基于b2b-vsc型柔性开关的状态间平滑切换控制方法 |
| CN114184822B (zh) * | 2021-12-03 | 2024-01-12 | 广西电网有限责任公司玉林供电局 | 一种相量作图量角器 |
| TW202349818A (zh) | 2022-01-31 | 2023-12-16 | 荷蘭商蜆殼國際研究公司 | 將電力自可再生能源設備提供至電負載之方法 |
| EP4679702A4 (en) * | 2023-03-07 | 2026-04-01 | Mitsubishi Electric Corp | Power conversion system |
| CN119602356B (zh) * | 2024-12-04 | 2025-11-14 | 全球能源互联网集团有限公司 | 一种考虑电压安全的vsc-hvdc自适应惯量设定方法及装置 |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1955313A (en) * | 1933-01-14 | 1934-04-17 | Westinghouse Electric & Mfg Co | Ventilating means for reactance coils |
| DE2360783A1 (de) * | 1973-12-06 | 1975-06-12 | Bbc Brown Boveri & Cie | Erdung einer zweipoligen hochspannungsgleichstrom-uebertragungs-anlage |
| JPS5746634A (en) * | 1980-09-04 | 1982-03-17 | Tokyo Electric Power Co | Controlling device for dc multiterminal transmission system |
| DE3225285C2 (de) * | 1982-07-03 | 1987-02-05 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren zum Betrieb einer Hochspannungs-Gleichstrom-Übertragungsanlage mit beliebig vielen Umformerstationen |
| CA1233198A (en) * | 1984-03-01 | 1988-02-23 | Helmut Neupauer | Method and apparatus to operate a high-voltage dc transmission system (hvdc) with automatic control of the converters |
| CA1233200A (en) * | 1984-03-01 | 1988-02-23 | Helmut Neupauer | Method and apparatus for resumption of normal operation of a high-voltage d. c. transmission line |
| EP0197352B1 (de) * | 1985-03-27 | 1989-06-28 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zum Betrieb einer HGÜ-Kurzkupplung bei Netzfehlern |
| DE3519161A1 (de) * | 1985-05-29 | 1986-12-04 | Hoechst Ag, 6230 Frankfurt | Verfahren zur reinigung von 1,2-dichlorethan |
| JPS62203597A (ja) * | 1986-03-03 | 1987-09-08 | Tokyo Electric Power Co Inc:The | タ−ビン発電機の軸ねじれ振動安定化装置 |
| CA1313219C (en) * | 1988-10-07 | 1993-01-26 | Boon-Teck Ooi | Pulse width modulation high voltage direct current transmission system and converter |
| US5343079A (en) * | 1991-02-25 | 1994-08-30 | Regents Of The University Of Minnesota | Standby power supply with load-current harmonics neutralizer |
| CN1204422A (zh) * | 1995-11-30 | 1999-01-06 | 西门子公司 | 调节高压直流输电多点网的n个换流站的方法和装置 |
| US5808880A (en) * | 1996-08-30 | 1998-09-15 | Otis Elevator Company | Power factor controller for active converter |
| SE524384C2 (sv) * | 1997-03-24 | 2004-08-03 | Abb Ab | Anläggning för överföring av elektrisk effekt |
| BRPI9701774B8 (pt) | 1997-04-11 | 2015-09-29 | Fundação Oswaldo Cruz Fiocruz | cdna mutante e infeccioso do vírus da febre amarela, constructo de dna, vírus recombinante de febre amarela e vacina para humanos contra infecções de febre amarela. |
| SE510353C2 (sv) * | 1997-06-12 | 1999-05-17 | Asea Brown Boveri | Anläggning för högspänd likström innehållande dubbelriktat styrda tyristorer |
| SE520838C2 (sv) * | 1999-05-19 | 2003-09-02 | Abb Ab | Anläggning för överföring av elektrisk effekt försedd med frånskiljare bestående av antiparallelt kopplade styrbara krafthalvledarelement |
| EP1174993B1 (en) * | 2000-06-02 | 2009-10-21 | Abb Ab | Method and control system for voltage control at a converter station |
| JP4287031B2 (ja) | 2000-07-14 | 2009-07-01 | 株式会社日立製作所 | 自励式直流送電システムの制御方法及び装置 |
| SE520005C2 (sv) * | 2001-09-21 | 2003-05-06 | Abb Ab | Strömriktare samt förfarande för styrning av en strömriktare |
| DE102004033578A1 (de) | 2004-07-05 | 2006-02-02 | Siemens Ag | Vorrichtung zur Hochspannungsleichtstromübertragung |
| WO2007084034A1 (en) * | 2006-01-18 | 2007-07-26 | Abb Technology Ltd. | A converter station |
-
2007
- 2007-06-14 US US12/306,764 patent/US8760888B2/en active Active
- 2007-06-14 CN CN2007800241082A patent/CN101479910B/zh active Active
- 2007-06-14 WO PCT/EP2007/055875 patent/WO2008000626A1/en not_active Ceased
- 2007-06-14 CN CN201110223591.5A patent/CN102280898B/zh active Active
- 2007-06-14 DK DK07765412.7T patent/DK2036181T4/da active
- 2007-06-14 AT AT07765412T patent/ATE475216T1/de not_active IP Right Cessation
- 2007-06-14 JP JP2009517097A patent/JP4673428B2/ja active Active
- 2007-06-14 ES ES07765412.7T patent/ES2370357T5/es active Active
- 2007-06-14 EP EP07765412.7A patent/EP2036181B2/en active Active
- 2007-06-14 DE DE602007007949T patent/DE602007007949D1/de active Active
- 2007-06-14 PT PT07765412T patent/PT2036181E/pt unknown
-
2011
- 2011-01-20 JP JP2011009587A patent/JP5231585B2/ja active Active
-
2013
- 2013-07-22 US US13/947,761 patent/US9379633B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102280898A (zh) | 2011-12-14 |
| US20090279328A1 (en) | 2009-11-12 |
| US20130301313A1 (en) | 2013-11-14 |
| US9379633B2 (en) | 2016-06-28 |
| DE602007007949D1 (de) | 2010-09-02 |
| CN102280898B (zh) | 2014-11-12 |
| EP2036181B2 (en) | 2017-03-15 |
| ATE475216T1 (de) | 2010-08-15 |
| JP5231585B2 (ja) | 2013-07-10 |
| CN101479910B (zh) | 2012-01-18 |
| WO2008000626A1 (en) | 2008-01-03 |
| US8760888B2 (en) | 2014-06-24 |
| HK1165109A1 (en) | 2012-09-28 |
| ES2370357T3 (es) | 2011-12-14 |
| CN101479910A (zh) | 2009-07-08 |
| JP2009542182A (ja) | 2009-11-26 |
| ES2370357T5 (es) | 2017-08-28 |
| DK2036181T4 (da) | 2017-06-19 |
| PT2036181E (pt) | 2010-11-29 |
| EP2036181B1 (en) | 2010-07-21 |
| JP2011125216A (ja) | 2011-06-23 |
| JP4673428B2 (ja) | 2011-04-20 |
| EP2036181A1 (en) | 2009-03-18 |
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