CN101242132A - Trigger angle control policy for ultra-high voltage DC startup - Google Patents
Trigger angle control policy for ultra-high voltage DC startup Download PDFInfo
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- CN101242132A CN101242132A CNA2007101956578A CN200710195657A CN101242132A CN 101242132 A CN101242132 A CN 101242132A CN A2007101956578 A CNA2007101956578 A CN A2007101956578A CN 200710195657 A CN200710195657 A CN 200710195657A CN 101242132 A CN101242132 A CN 101242132A
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- pulse conversion
- trigger angle
- high voltage
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention relates to two control methods of a trigger angle when an UHVDC starts, the methods are suitable for the UHVDC system whose single pole selects a mode of connection that two 12 pulse converter are series connected, one of the 12 pulse converters has been running, the other is in the hot readiness condition and is to be put into operation, when using the methods, the current intermittent can be avoided, simultaneously the stress produced by the opening and closing of a high speed by-pass switch which is parallel connected to the 12 pulsation converters is reduced, and the direct current will be steadily transferred to the operational 12 pulse converter, and the on-line operation of the 12 pulsation converters of the single pole of the UHVDC system is completed.
Description
Technical field
The control method of trigger angle when the present invention relates to the extra-high voltage direct-current startup, more particularly this method is used for the extra-high voltage direct-current system of an one pole of 12 pulse conversion devices formation of two series connection, one of them 12 pulse conversion device moves, another one is in hot stand-by duty, when this 12 pulse conversion device is about to put into operation to the control method of this 12 pulse conversion device trigger angle.
Background technology
UHV transmission has at a distance, big capacity, low-loss advantage, is the effective way that realizes that China's energy resources are distributed rationally, can obtain good social economy's comprehensive benefit.The development extra-high voltage grid can promote China's power technology innovation and the manufacturing technology upgrading of electrician.
In China's electrical network Eleventh Five-Year Plan, the direct current ultra high voltage will with the AC extra high voltage common development, finally become the important component part of national key rack.Present ultra high voltage research work both domestic and external mainly comprises extra-high-voltage alternating current and extra-high voltage direct-current transmission technology.
Jinsha jiang River first phase Xiang Jiaba, small stream Lip river are crossed the electric power of large hydropower station and are sent outside employing ± 800kV direct current transportation technology, have the direct voltage higher than Three Gorges Projects, electric current, farther electrical distance and the bigger transmission capacity of sending, its construction will produce tremendous influence to the great-leap-forward development of China's electrical network and the formation of on national network general layout.
For ± 800kV direct current transportation, owing to also there is not mature technology at present in the world, in China and even be still an engineering practice problem in the world with quite a lot of technological difficulties.The extra-high voltage direct-current transmission engineering is also had higher requirement to the design of control protection system; totally it seems, ultra high voltage (± 800kV) DC transmission engineering control protection system in principle and realize with routine in the past ± the 500kV DC transmission engineering there is no big different.But the main wiring mode of extra-high voltage direct-current engineering is different with conventional direct current, every utmost point adopts 2 12 pulse conversion devices to be in series, see accompanying drawing 1, this mode of connection for extra-high voltage direct-current, for improving the reliability and the availability factor of direct current system, need be when one 12 pulse conversion device operation of one pole can online input another one 12 pulse conversion devices, in order to avoid the 12 pulse conversion devices of when dropping into another one 12 pulse conversion devices, stopping transport and having moved, influence the conveying of power, cause unnecessary economic loss.The control strategy of the converter trigger angle in the time of therefore need be to online input another one 12 pulse conversion devices is studied, the control method of this converter trigger angle when the present invention proposes online input another one 12 pulse conversion devices.
Summary of the invention
The control method of this converter trigger angle when the object of the present invention is to provide online input another one 12 pulse conversion devices.With under the zero energy operational mode, put into operation after the 12 pulse conversion device releases to be dropped into maybe will be to be dropped into 12 pulse conversion device trigger angle control at 70 these converters of degree back release.Can realize effectively that another one 12 the online of pulse conversion device put into operation, the stress when the high speed by-pass switch that reduces to be in parallel with 12 pulse conversion devices simultaneously cut-offs, when reducing online the input to the reactive power impact of AC system.
Description of drawings
Fig. 1 is the extra-high voltage direct-current main electrical scheme.
Fig. 2 is the sequential control sequential that expression drops into series connection valve group.
Embodiment
At one 12 pulse conversion device requirement of online input another one 12 pulse conversion devices under the situation of operation in the extra-high voltage DC transmission system, when the present invention proposes extra-high voltage direct-current and starting, two kinds of control methods of this converter trigger angle during promptly online input another one 12 pulse conversion devices.Be respectively the converter trigger angle control method of " the zero energy mode is drawn the by-pass switch electric current " and the converter trigger angle control method of " 70 degree rectifier systems are drawn the by-pass switch electric current ".
One, the embodiment for the trigger angle control method of " the zero energy mode is drawn the by-pass switch electric current " is:
Initial condition: 12 pulse conversion device V2 move in the one pole, and 12 pulse conversion device V1 prepare to drop into, as Fig. 2 1. shown in;
The control sequence that drops into 12 pulse conversion device V1 is:
1) carry out switching manipulation before the input 12 pulse conversion devices earlier:
Bypass speed-sensitive switch C4 closes, as Fig. 2 3. shown in;
Disconnection is every cutter C1, as Fig. 2 4. shown in;
2) 12 pulse conversion device V1 releases, zero energy mode Control current rises to current reference value, the electric current of by-pass switch C4 shifts to 12 pulse conversion device V1, as Fig. 2 5. shown in
3) by-pass switch C4 opens, and 12 pulse conversion device electric currents continue up and down, as Fig. 2 6. shown in.
4) rectification side keeps deciding Current Control, and the inversion side rises direct voltage to 400kV, and the utmost point enters two 12 pulse conversion units polyphone running statuses.
Two, the embodiment for the converter trigger angle control method of " 70 degree rectifier systems draws the by-pass switch electric current " is:
Initial condition: 12 pulse conversion device V2 operation in the one pole, 12 pulse conversion device V1 prepare input, as Fig. 2 1. shown in;
The control timing that drops into 12 pulse conversion device V1 is:
1) drop into 12 pulse conversion devices and carry out switching manipulation earlier:
Disconnection is every cutter C1, as Fig. 2 4. shown in;
2) inversion side: send by-pass switch and open order, spend the release converter valve 70 behind the 30m;
3) rectification side: after the release of inversion side, send by-pass switch immediately in the 20ms and open order, behind the 30ms in 70 degree release converter valve, as Fig. 2 5. shown in;
4) by-pass switch C4 opens, and 12 pulse conversion device electric currents continue up and down, as Fig. 2 6. shown in;
5) rectification side keeps deciding Current Control, and the inversion side rises direct voltage to 400kV, and the utmost point enters two 12 pulse conversion units polyphone running statuses.
Through the l-G simulation test checking, above-mentioned two kinds of methods can realize effectively that all another one 12 the online of pulse conversion device put into operation, stress when the high speed by-pass switch that reduces to be in parallel with 12 pulse conversion devices simultaneously cut-offs, when reducing online drop into to the reactive power impact of AC system.
Claims (3)
- Two kinds of control methods of trigger angle when 1, a kind of extra-high voltage direct-current starts, one of them of 12 pulse conversion devices that it is characterized in that two series connection of extra-high voltage direct-current system one pole moved, another one is in hot stand-by duty, when this 12 pulse conversion device is about to put into operation to the control method of this 12 pulse conversion device trigger angle.
- 2, according to claim 1, it is characterized in that: under the zero energy operational mode, put into operation after the 12 pulse conversion device releases that will be to be dropped into.
- 3, according to claim 1, it is characterized in that: 12 pulse conversion device trigger angle control that will be to be dropped into are at 70 these converters of degree back release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101956578A CN101242132A (en) | 2007-12-05 | 2007-12-05 | Trigger angle control policy for ultra-high voltage DC startup |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101956578A CN101242132A (en) | 2007-12-05 | 2007-12-05 | Trigger angle control policy for ultra-high voltage DC startup |
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| CN101242132A true CN101242132A (en) | 2008-08-13 |
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| CNA2007101956578A Pending CN101242132A (en) | 2007-12-05 | 2007-12-05 | Trigger angle control policy for ultra-high voltage DC startup |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383509B (en) * | 2008-10-17 | 2010-06-02 | 南方电网技术研究中心 | Extra-high voltage DC power transmission control system configuring method |
| CN101608757B (en) * | 2009-07-06 | 2011-07-27 | 南京中压光电科技有限公司 | LED streetlight |
| CN102270925A (en) * | 2011-08-08 | 2011-12-07 | 中国电力科学研究院 | Insulation coordinating method of module unit of modularized multi-level voltage source converter |
| CN103441487A (en) * | 2013-08-05 | 2013-12-11 | 国家电网公司 | Method for making high-voltage side group valve put into operation and go out of operation |
| CN103605022A (en) * | 2013-11-18 | 2014-02-26 | 国家电网公司 | Converter valve damping element additional loss determination method |
| CN103762543A (en) * | 2014-01-24 | 2014-04-30 | 南京南瑞继保电气有限公司 | Extra-high voltage DC protection voltage reference value automatic switchover implementation method |
| CN105553248A (en) * | 2016-01-28 | 2016-05-04 | 中国科学院等离子体物理研究所 | Starting method for series operation of multiple high-power converters |
| CN106786713A (en) * | 2016-11-25 | 2017-05-31 | 南京南瑞继保电气有限公司 | A kind of voltage source converter unit topological structure and control method |
| CN106786488A (en) * | 2017-01-05 | 2017-05-31 | 中国核动力研究设计院 | A kind of redundancy and averraged the direct current rod supply unit of power |
-
2007
- 2007-12-05 CN CNA2007101956578A patent/CN101242132A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383509B (en) * | 2008-10-17 | 2010-06-02 | 南方电网技术研究中心 | Extra-high voltage DC power transmission control system configuring method |
| CN101608757B (en) * | 2009-07-06 | 2011-07-27 | 南京中压光电科技有限公司 | LED streetlight |
| CN102270925A (en) * | 2011-08-08 | 2011-12-07 | 中国电力科学研究院 | Insulation coordinating method of module unit of modularized multi-level voltage source converter |
| CN102270925B (en) * | 2011-08-08 | 2014-02-12 | 中国电力科学研究院 | Insulation coordinating method of module unit of modularized multi-level voltage source converter |
| CN103441487A (en) * | 2013-08-05 | 2013-12-11 | 国家电网公司 | Method for making high-voltage side group valve put into operation and go out of operation |
| CN103605022A (en) * | 2013-11-18 | 2014-02-26 | 国家电网公司 | Converter valve damping element additional loss determination method |
| CN103605022B (en) * | 2013-11-18 | 2016-04-20 | 国家电网公司 | A kind of converter valve damping element added losses defining method |
| CN103762543A (en) * | 2014-01-24 | 2014-04-30 | 南京南瑞继保电气有限公司 | Extra-high voltage DC protection voltage reference value automatic switchover implementation method |
| CN105553248A (en) * | 2016-01-28 | 2016-05-04 | 中国科学院等离子体物理研究所 | Starting method for series operation of multiple high-power converters |
| CN106786713A (en) * | 2016-11-25 | 2017-05-31 | 南京南瑞继保电气有限公司 | A kind of voltage source converter unit topological structure and control method |
| CN106786488A (en) * | 2017-01-05 | 2017-05-31 | 中国核动力研究设计院 | A kind of redundancy and averraged the direct current rod supply unit of power |
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