CN103107551A - Topology circuit used for offshore wind power electric energy delivery - Google Patents
Topology circuit used for offshore wind power electric energy delivery Download PDFInfo
- Publication number
- CN103107551A CN103107551A CN2013100310713A CN201310031071A CN103107551A CN 103107551 A CN103107551 A CN 103107551A CN 2013100310713 A CN2013100310713 A CN 2013100310713A CN 201310031071 A CN201310031071 A CN 201310031071A CN 103107551 A CN103107551 A CN 103107551A
- Authority
- CN
- China
- Prior art keywords
- direct current
- voltage
- electric energy
- wind power
- lcc
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a topology circuit used for offshore wind power electric energy delivery in the field of electric energy transmission circuit design. The topology circuit comprises a wind generating set, a high-voltage direct current transmission sending end, a high-voltage direct current transmission receiving end and a direct current line. The high-voltage direct current transmission sending end comprises a rectification-side transformer and a line commutated converter (LCC). The high-voltage direct current transmission receiving end comprises a voltage source converter (VSC) and an inversion-side transformer. The direct current line comprises an electric reactor, a capacitor and a power diode. The topology circuit used for the offshore wind power electric energy delivery has the advantages that aiming at offshore wind power transmission demands, a high-performance, low-cost and low-loss electric energy transmission method based on the circuit structure of mixed direct current electricity transmission of LCC and VSC and a control method of the circuit structure is provided.
Description
Technical field
The invention belongs to the delivery of electrical energy circuit design field, relate in particular to a kind of topological circuit of sending for the Oversea wind power generation electric energy.
Background technology
Employing has obtained extensive use based on the current source type converter LCC of thyristor.Yet the problems such as that this class converter exists is high to receiving end electrical network requirement of strength, commutation failure may occur, absorbing reactive power is many.Until in recent years,, made and adopt the flexible DC power transmission of voltage-source type converter VSC fast-developing, and all have Practical Project to put into operation at home and abroad from the fast development of turn-offing power electronic device along with large capacity.The superiority of Technology of HVDC based Voltage Source Converter derives from it and uses the voltage-source type converter, controls flexibly excellent performance.But because large capacity such as adopting IGBT turn-offs power electronic device certainly, than the thyristor that conventional direct current adopts, cost is high.So the economy of conventional DC techniques and the technical advantage of flexible direct current can be combined, consist of the Hybrid HVDC technology, namely an end adopts the current source type converter, and the other end adopts the voltage-source type converter, and the centre is connected by DC line.The most advantages that not only keep Technology of HVDC based Voltage Source Converter, and cost can reduce greatly.If succeed in developing and put into operation, will be widely used, bring into play huge effect in following electrical network, become the important component part of intelligent grid.
At present, most of wind power generation all adopts the connected mode of AC network.But for being incorporated into the power networks of Oversea wind power generation, high voltage direct current transmission is one and realizes cable transmission, the better selection that reduces the wastage.Although LCC-HVDC has had a lot of practical implementation experiences, use a lot of problems that still exist at sea in the wind power generation situation.For the startup of satisfying double feedback electric engine be incorporated into the power networks, necessaryly adopt special equipment that voltage support and converting commutating current are provided.After offshore wind farm is transported on the bank, and the AC system intensity of site is usually less, adopts LCC to exist voltage fluctuation large, is easy to occur the problems such as commutation failure.Possess meritorious, idle decoupling zero based on the high voltage direct current transmission of voltage source converter and control, be convenient to expansion, and can independently provide the wind-driven generator required voltage that is incorporated into the power networks to support.If but give in system, receiving end all adopts VSC type converter just to have the problems such as cost is high, loss is large.
Summary of the invention
For the needs of the Oversea wind power generation electric power transfer of mentioning in background technology, realize high-performance, low cost, low-loss delivery of electrical energy mode, the present invention proposes a kind of topological circuit of sending for the Oversea wind power generation electric energy.
A kind of topological circuit of sending for the Oversea wind power generation electric energy is characterized in that described circuit comprises wind turbine generator, high voltage direct current transmission sending end, high voltage direct current transmission receiving end and DC line; Described high voltage direct current transmission sending end comprises rectification side transformer and line commutated converter LCC; Described high voltage direct current transmission receiving end comprises voltage-source type converter VSC and inversion side transformer; Described DC line comprises reactor, capacitor and power diode;
Wherein, described wind turbine generator, rectification side transformer are connected with line commutated converter LCC and are connected;
The positive pole of described line commutated converter LCC is connected with the positive pole of power diode by reactor; The negative pole of described line commutated converter LCC is connected negative pole with the negative pole of described capacitor respectively and is connected with voltage-source type converter VSC; Described reactor is used for suppressing current fluctuation; Described capacitor is used for the voltage oscillation suppression;
The negative pole of described power diode is connected positive pole with the positive pole of described capacitor respectively and is connected with voltage-source type converter VSC; Described power diode is used for suppressing the direct-current short circuit electric current;
Described voltage-source type converter VSC is connected with described inversion side transformer.
Described wind turbine generator adopts the direct-drive wind power generation mode.
Described line commutated converter LCC adopts the current control mode of deciding of deciding power decision.
Described voltage-source type converter VSC adopts the constant DC voltage control mode.
The invention has the beneficial effects as follows, for the needs of Oversea wind power generation electric power transfer, propose a kind of circuit structure and control method thereof of the Hybrid HVDC based on LCC+VSC, realize high-performance, low cost and low-loss delivery of electrical energy mode.
Description of drawings
Fig. 1 is the winding diagram of a kind of topological circuit of sending for the Oversea wind power generation electric energy provided by the invention;
Wherein, 1-wind turbine generator; 2-high voltage direct current transmission sending end; 3-high voltage direct current transmission receiving end; The 4-DC line; 5-rectification side transformer; 6-line commutated converter LCC; The 7-reactor; The 8-power diode; The 9-capacitor; 10-voltage-source type converter VSC; 11-inversion side transformer.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment is elaborated.Should be emphasized that following explanation is only exemplary, rather than in order to limit the scope of the invention and to use.
Fig. 1 is the winding diagram of a kind of topological circuit of sending for the Oversea wind power generation electric energy provided by the invention.In Fig. 1, described circuit comprises wind turbine generator, high voltage direct current transmission sending end, high voltage direct current transmission receiving end and DC line; Described high voltage direct current transmission sending end comprises rectification side transformer and line commutated converter LCC; Described high voltage direct current transmission receiving end comprises voltage-source type converter VSC and inversion side transformer; Described DC line comprises reactor, capacitor and power diode;
Wherein, described wind turbine generator, rectification side transformer and the current source type converter LCC of thyristor of being connected connect in turn;
The positive pole of described line commutated converter LCC is connected with the positive pole of power diode by reactor; The negative pole of described line commutated converter LCC is connected negative pole with the negative pole of described capacitor respectively and is connected with voltage-source type converter VSC; Described reactor is used for suppressing current fluctuation; Described capacitor is used for the voltage oscillation suppression;
The negative pole of described power diode is connected positive pole with the positive pole of described capacitor respectively and is connected with voltage-source type converter VSC; Described power diode is used for suppressing the direct-current short circuit electric current;
Described voltage-source type converter VSC is connected with described inversion side transformer.
Technical scheme is as follows:
1. wind turbine generator adopts the direct-drive wind power generation mode, and the support that this mode need not AC network also can realize starting and being incorporated into the power networks;
2. the high voltage direct current transmission sending end adopts line commutated converter LCC, and this converter has that cost is low, overload capacity is strong, is easy to suppress the characteristics such as overcurrent;
3. the high voltage direct current transmission receiving end adopts voltage-source type converter VSC, and this converter can be realized gaining merit, idle decoupling zero is controlled, without characteristics such as commutation failure problems;
4. reactor L of line commutated converter LCC side series connection in DC line, the inhibition of realization to current fluctuation, VSC side capacitor C in parallel realizes the inhibition to voltage fluctuation, power diode of VSC side series connection is realized the inhibition to the direct-current short circuit electric current;
5. line commutated converter LCC side adopts constant DC voltage control by the decide Current Control, voltage-source type converter VSC side of deciding power decision, realize the recovery after Systems balanth operation and fault, the performance number of line commutated converter LCC side can be determined by maximum power tracing by the wind energy turbine set operation conditions.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement are within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (4)
1. one kind is used for the topological circuit that the Oversea wind power generation electric energy is sent, and it is characterized in that, described circuit comprises wind turbine generator, high voltage direct current transmission sending end, high voltage direct current transmission receiving end and DC line; Described high voltage direct current transmission sending end comprises rectification side transformer and line commutated converter LCC; Described high voltage direct current transmission receiving end comprises voltage-source type converter VSC and inversion side transformer; Described DC line comprises reactor, capacitor and power diode;
Wherein, described wind turbine generator, rectification side transformer are connected with line commutated converter LCC and are connected;
The positive pole of described line commutated converter LCC is connected with the positive pole of power diode by reactor; The negative pole of described line commutated converter LCC is connected negative pole with the negative pole of described capacitor respectively and is connected with voltage-source type converter VSC; Described reactor is used for suppressing current fluctuation; Described capacitor is used for the voltage oscillation suppression;
The negative pole of described power diode is connected positive pole with the positive pole of described capacitor respectively and is connected with voltage-source type converter VSC; Described power diode is used for suppressing the direct-current short circuit electric current;
Described voltage-source type converter VSC is connected with described inversion side transformer.
2. a kind of topological circuit of sending for the Oversea wind power generation electric energy according to claim 1, is characterized in that, described wind turbine generator adopts the direct-drive wind power generation mode.
3. a kind of topological circuit of sending for the Oversea wind power generation electric energy according to claim 1, is characterized in that, described line commutated converter LCC adopts the current control mode of deciding of deciding power decision.
4. a kind of topological circuit of sending for the Oversea wind power generation electric energy according to claim 1, is characterized in that, described voltage-source type converter VSC adopts the constant DC voltage control mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310031071.3A CN103107551B (en) | 2013-01-25 | 2013-01-25 | Topology circuit used for offshore wind power electric energy delivery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310031071.3A CN103107551B (en) | 2013-01-25 | 2013-01-25 | Topology circuit used for offshore wind power electric energy delivery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103107551A true CN103107551A (en) | 2013-05-15 |
| CN103107551B CN103107551B (en) | 2014-12-03 |
Family
ID=48315204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310031071.3A Expired - Fee Related CN103107551B (en) | 2013-01-25 | 2013-01-25 | Topology circuit used for offshore wind power electric energy delivery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103107551B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840479A (en) * | 2013-12-16 | 2014-06-04 | 南方电网科学研究院有限责任公司 | Start control method for VSC-HVDC-based alternating current-direct current parallel system |
| CN104934948A (en) * | 2014-03-18 | 2015-09-23 | Abb技术有限公司 | DC fault eliminating method of boost type DC autotransformer |
| CN105656072A (en) * | 2016-03-15 | 2016-06-08 | 西安许继电力电子技术有限公司 | LCC-MMC type direct-current transmission system power coordination control method |
| CN105914733A (en) * | 2016-04-20 | 2016-08-31 | 清华大学 | Offshore platform power supply system based on full-bridge MMC DC side series connection and control method thereof |
| WO2016179810A1 (en) * | 2015-05-13 | 2016-11-17 | Abb Schweiz Ag | Hybrid high voltage direct current converter station and operation method therefor |
| CN106992553A (en) * | 2017-06-07 | 2017-07-28 | 广东电网有限责任公司电力科学研究院 | A kind of flexible direct current transverter topology access grid-connected suitable for many wind power plants |
| CN107204624A (en) * | 2017-04-25 | 2017-09-26 | 国家电网公司 | A kind of transmission system and its control method for adapting to global energy internet |
| CN107431355A (en) * | 2015-03-19 | 2017-12-01 | 通用电器技术有限公司 | Electric power transmission network |
| CN108092295A (en) * | 2016-11-21 | 2018-05-29 | 南方电网科学研究院有限责任公司 | Single valve group puts into method online in a kind of mixed DC system |
| CN110221169A (en) * | 2019-05-21 | 2019-09-10 | 西安许继电力电子技术有限公司 | A kind of DC grid short circuit current experimental rig and method |
-
2013
- 2013-01-25 CN CN201310031071.3A patent/CN103107551B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 潘武略: "新型直流输电***损耗特性及降损措施研究", 《浙江大学博士学位论文》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840479A (en) * | 2013-12-16 | 2014-06-04 | 南方电网科学研究院有限责任公司 | Start control method for VSC-HVDC-based alternating current-direct current parallel system |
| CN104934948A (en) * | 2014-03-18 | 2015-09-23 | Abb技术有限公司 | DC fault eliminating method of boost type DC autotransformer |
| CN104934948B (en) * | 2014-03-18 | 2018-06-19 | Abb瑞士股份有限公司 | The DC Line Fault sweep-out method of Boost DC auto-transformer |
| CN107431355A (en) * | 2015-03-19 | 2017-12-01 | 通用电器技术有限公司 | Electric power transmission network |
| CN107431355B (en) * | 2015-03-19 | 2020-06-23 | 通用电器技术有限公司 | Power transmission network |
| CN107431357A (en) * | 2015-05-13 | 2017-12-01 | Abb瑞士股份有限公司 | Mixed high-voltage DC converter station and its operating method |
| WO2016179810A1 (en) * | 2015-05-13 | 2016-11-17 | Abb Schweiz Ag | Hybrid high voltage direct current converter station and operation method therefor |
| CN105656072B (en) * | 2016-03-15 | 2018-03-02 | 西安许继电力电子技术有限公司 | A kind of LCC MMC types DC transmission system power coordination control method |
| CN105656072A (en) * | 2016-03-15 | 2016-06-08 | 西安许继电力电子技术有限公司 | LCC-MMC type direct-current transmission system power coordination control method |
| CN105914733A (en) * | 2016-04-20 | 2016-08-31 | 清华大学 | Offshore platform power supply system based on full-bridge MMC DC side series connection and control method thereof |
| CN108092295A (en) * | 2016-11-21 | 2018-05-29 | 南方电网科学研究院有限责任公司 | Single valve group puts into method online in a kind of mixed DC system |
| CN107204624A (en) * | 2017-04-25 | 2017-09-26 | 国家电网公司 | A kind of transmission system and its control method for adapting to global energy internet |
| CN107204624B (en) * | 2017-04-25 | 2021-09-10 | 国家电网公司 | Power transmission system suitable for global energy Internet and control method thereof |
| CN106992553A (en) * | 2017-06-07 | 2017-07-28 | 广东电网有限责任公司电力科学研究院 | A kind of flexible direct current transverter topology access grid-connected suitable for many wind power plants |
| CN106992553B (en) * | 2017-06-07 | 2023-05-16 | 广东电网有限责任公司电力科学研究院 | Flexible direct current converter topology suitable for multiple wind power plants access grid connection |
| CN110221169A (en) * | 2019-05-21 | 2019-09-10 | 西安许继电力电子技术有限公司 | A kind of DC grid short circuit current experimental rig and method |
| CN110221169B (en) * | 2019-05-21 | 2022-03-22 | 西安许继电力电子技术有限公司 | Direct-current power grid short-circuit current testing device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103107551B (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103107551B (en) | Topology circuit used for offshore wind power electric energy delivery | |
| CN103219738B (en) | Direct current transmission system based on three-pole type structure | |
| CN110829479A (en) | High-frequency uncontrolled rectification direct-current power transmission system of offshore wind farm | |
| CN103904635B (en) | A kind of topological structure of multiport direct current transformer station and control method thereof | |
| CN103997033B (en) | A kind of HVDC transmission system possessing DC Line Fault ride-through capability | |
| CN103715716B (en) | Based on the AC-DC hybrid transmission system seamless switching control method of VSC-HVDC | |
| CN102904454A (en) | Efficient insulation DC (direct-current) converter system in photovoltaic power generation system | |
| CN107888073B (en) | Alternating current-direct current hybrid energy router of all-round soft switch | |
| WO2023134225A1 (en) | Low-frequency power transmission system and control mode therefor | |
| CN105633994A (en) | Starting method of FMMC-LCC hybrid DC power transmission system | |
| Lian et al. | DC collection networks for offshore generation | |
| CN103545839B (en) | Wind power generating set low-voltage regulation device | |
| CN102437743B (en) | Boost conversion circuit, solar inverter and control method thereof | |
| Liu et al. | The control strategy for Hybrid HVDC using voltage margin control and voltage dependent current order limiter control | |
| CN102780231A (en) | Direct-current current source loop-based wind power station converging and grid-connecting method | |
| CN102185336A (en) | Wind power generating equipment | |
| CN103904639A (en) | Double-fed wind turbine generator converter control method used for flexible direct current power transmission system | |
| CN204258295U (en) | Switching magnetic-resistance wind-driven generator direct current exports Cuk buck-boost type electrical conversion systems | |
| CN204886203U (en) | Qualities of wind -powered electricity generation stable and electric energy of transient state of a system that is incorporated into power networks are improved energy memory | |
| CN203617721U (en) | Low voltage adjusting and controlling device for wind turbine | |
| CN204361682U (en) | The full direct current energy collecting system of a kind of wind energy turbine set | |
| CN209313742U (en) | A kind of three-phase photovoltaic grid-connected power-generation inversion device | |
| CN202076803U (en) | Wind power generating equipment | |
| CN204424925U (en) | For the energy storage type intelligent transformer of wind generator system | |
| CN204258685U (en) | The reversible electrical conversion systems of switching magnetic-resistance wind-driven generator average anode current |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20170125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |