CN103595073A - Wind turbine generator and method for allowing same to overcome electricity grid fluctuation influences - Google Patents
Wind turbine generator and method for allowing same to overcome electricity grid fluctuation influences Download PDFInfo
- Publication number
- CN103595073A CN103595073A CN201310604353.8A CN201310604353A CN103595073A CN 103595073 A CN103595073 A CN 103595073A CN 201310604353 A CN201310604353 A CN 201310604353A CN 103595073 A CN103595073 A CN 103595073A
- Authority
- CN
- China
- Prior art keywords
- power supply
- wind
- supply loop
- electricity generation
- powered electricity
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Control Of Eletrric Generators (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a wind turbine generator and a method for allowing the wind turbine generator to overcome electricity grid fluctuation influences. The wind turbine generator comprises a main power supply loop and an auxiliary power supply loop, wherein a PLC and multiple subsystems are arranged in the auxiliary power supply loop. An electric generator is isolated from an electricity grid through a full power converter, a stabilized voltage supply is arranged between a single-phase or three-phase power supply system and the auxiliary power supply loop of the wind turbine generator, an electricity grid monitoring module is connected into the auxiliary power supply loop of the wind turbine generator, and an electrical part in the auxiliary power supply loop is isolated from the electricity grid through the stabilized voltage supply. When fluctuations exsit in the electricity grid for a long time and in a large range, electric energy of the electric generator can still be fed to the electricity grid by the wind turbine generator through the isolation effect of the full power inverter installed in the main power supply loop so that the influences of electricity grid fluctuations on electric energy feeding can be eliminated, and a 400V high-voltage control system can still run normally through the isolation effect of the stabilized voltage supply installed in the auxiliary power supply loop.
Description
Technical field
The present invention relates to a kind of motor and overcome the method for power network fluctuation, relate in particular to a kind of method that wind-powered electricity generation unit and wind-powered electricity generation unit overcome power network fluctuation impact
Background technology
Wind energy is large as a kind of amount of containing, pollute little new cleaning fuel, is more and more utilized at present, and the proportion that wind-powered electricity generation unit is linked in electrical network increases gradually, and can wind-powered electricity generation unit stable operation be related to the load of the whether stable and electrical network of electrical network.When power network fluctuation, wind-powered electricity generation unit should possess stronger conformability, does not throw off with electrical network, and continue to be fed to active power and reactive power to electrical network to keep the stable operation of self.
Be subject to the impact of the factors such as geographical position and power transmission line, electrical network is larger in voltage and the frequency fluctuation in some region, and example is as shown in table 1.
Some regional power grid operational factor of table 1
General wind-powered electricity generation unit can adapt to the power network fluctuation in normal range (NR), but for the comparatively serious area of power network fluctuation, and conventional wind-powered electricity generation unit can not stable operation, is in particular in:
1. the electric energy that generator sends can not be fed in electrical network;
2. the auxiliary power supply system power supply of wind-powered electricity generation unit will produce fluctuation: driftage, change oar and other loop are by cisco unity malfunction;
3. wind-powered electricity generation unit will be due to disorderly closedown.
For solving the more harsh operational factor requirement of power network fluctuation, inventor invents a kind of method that wind-powered electricity generation unit overcomes power network fluctuation impact, can adapt to the fluctuation for a long time on a large scale of line voltage and frequency.
Summary of the invention
For overcoming the above problems, the invention provides a kind of method that wind-powered electricity generation unit overcomes power network fluctuation impact, have advantages of can adapt on a large scale, long-time power network fluctuation, simultaneously, adopting said method, can reduce the proportion of goods damageds of mechanical part, improves wind-powered electricity generation unit durability.
The present invention is also applicable to, in the larger electrical network of various fluctuations, electrical network end and from net type wind turbine set type, be with a wide range of applications.
To achieve these goals, the technical solution used in the present invention is:
A unit, comprises main power circuit and accessory power supply loop; In described accessory power supply loop, there are PLC controller and the access of a plurality of subsystem;
In wind-powered electricity generation unit main power circuit, access generator, between generator and electrical network, by full power convertor, isolate;
Between single-phase or three phase mains electric power system and wind-powered electricity generation unit accessory power supply loop, stabilized voltage power supply is installed;
Power network monitoring module is accessed in wind-powered electricity generation unit accessory power supply loop, between the electric component in accessory power supply loop and electrical network, by stabilized voltage power supply, isolate;
Further, a plurality of subsystems in described access accessory power supply loop comprise yaw system, pitch-controlled system, cooling system;
The method that the described wind-powered electricity generation unit of application overcomes power network fluctuation impact is:
When power network fluctuation or generation electrical network are asymmetric, full power convertor carries out excitation control to generator, the output electric energy rectification of generator and inversion are processed, make amplitude, frequency and the phase angle of generator output voltage and amplitude, frequency and the phase angle of line voltage consistent, motor still operates in symmetry status;
After line voltage fluctuates, power network monitoring module real-time sampling on-Line Voltage, voltage signal is sent to PLC controller, PLC summary responses also send the instruction of protection unit, stabilized voltage power supply is accessed to accessory power supply loop, stabilized voltage power supply compensates voltage magnitude with the response speed of 10～30ms, the voltage of output amplitude, frequency stabilization;
The built-in Control System Software of PLC controller, carries out Real-Time Monitoring, controls in real time main power circuit and accessory power supply loop, completes wind-powered electricity generation set yaw, becomes oar and refrigerating function, makes wind-powered electricity generation stable operation of unit.
Beneficial effect of the present invention is: when electrical network occurs after long-time, large-scale fluctuation, wind-powered electricity generation unit is by being arranged on the buffer action of full power convertor in main power circuit, the electric energy of generator still can be fed in electrical network, eliminate the impact of power network fluctuation on feeding electric energy; Buffer action by the stabilized voltage power supply of installing in accessory power supply loop, still can normally move wind-powered electricity generation unit 400V high voltage system.
A kind of wind-powered electricity generation unit of the present invention overcomes the method for power network fluctuation impact, make wind-powered electricity generation unit can adapt to the large frequency of line voltage, on a large scale, for a long time fluctuation, can be by certainly controlling after fluctuation, self-regulation maintains steady operational status, solved the excessive difficult problem that causes wind-powered electricity generation unit and electrical network disengagement of the power network fluctuation causing due to environmental factor.
Accompanying drawing explanation
The present invention has accompanying drawing 3 width;
Fig. 1 is the topology diagram of wind-powered electricity generation unit of the prior art;
Fig. 2 is the topology diagram of wind-powered electricity generation unit of the present invention;
Fig. 3 is operational flow diagram of the present invention.
Embodiment
The present invention is further described in conjunction with the drawings and the specific embodiments.
A unit, comprises main power circuit and accessory power supply loop; In described accessory power supply loop, there are PLC controller and the access of a plurality of subsystem;
In wind-powered electricity generation unit main power circuit, access generator, between generator and electrical network, by full power convertor, isolate;
Between single-phase or three phase mains electric power system and wind-powered electricity generation unit accessory power supply loop, stabilized voltage power supply is installed;
Power network monitoring module is accessed in wind-powered electricity generation unit accessory power supply loop, between the electric component in accessory power supply loop and electrical network, by stabilized voltage power supply, isolate;
Further, a plurality of subsystems in described access accessory power supply loop comprise yaw system, pitch-controlled system, cooling system;
The method that the described wind-powered electricity generation unit of application overcomes power network fluctuation impact is:
When power network fluctuation or generation electrical network are asymmetric, full power convertor carries out excitation control to generator, the output electric energy rectification of generator and inversion are processed, make amplitude, frequency and the phase angle of generator output voltage and amplitude, frequency and the phase angle of line voltage consistent, motor still operates in symmetry status;
After line voltage fluctuates, power network monitoring module real-time sampling on-Line Voltage, voltage signal is sent to PLC controller, PLC summary responses also send the instruction of protection unit, stabilized voltage power supply is accessed to accessory power supply loop, stabilized voltage power supply compensates voltage magnitude with the response speed of 10～30ms, the voltage of output amplitude, frequency stabilization;
The built-in Control System Software of PLC controller, carries out Real-Time Monitoring, controls in real time main power circuit and accessory power supply loop, completes wind-powered electricity generation set yaw, becomes oar and refrigerating function, makes wind-powered electricity generation stable operation of unit.
Main power circuit is comprised of full power convertor, grid-connected circuit breaker and generator, main power circuit is converted to rotation function electric energy and is fed to electrical network, in order to make wind-powered electricity generation unit can adapt to fluctuation compared with large electrical network, stable operation need to be carried out parameter expansion by full power convertor and corresponding assembly thereof;
Wind-powered electricity generation unit control program design step is:
(1) for the design of electric power loop, increase power network monitoring module, Real-Time Monitoring power network fluctuation state, adds corresponding output point and feedback test point, detection of grid voltage status and the stabilized voltage power supply output voltage state controlled;
(2) state machine of design unit operation, to line voltage or the larger state of frequency fluctuation amplitude, increases the corresponding control strategy of controller;
(3) in order to adapt to the requirement of the operation of power networks that fluctuation is larger; need to be optimized the interrelated logic in control system of wind turbines and parameter, such as electric network protection logic and parameter, current transformer protection logic and parameter, power control logic and parameter, change oar control logic and parameter and complete machine Protection parameters etc.
Claims (3)
1. a wind-powered electricity generation unit, comprises main power circuit and accessory power supply loop; In described accessory power supply loop, there are PLC controller and the access of a plurality of subsystem, it is characterized in that: in wind-powered electricity generation unit main power circuit, access generator, between generator and electrical network, by full power convertor, isolate;
Between single-phase or three phase mains electric power system and wind-powered electricity generation unit accessory power supply loop, stabilized voltage power supply is installed;
Power network monitoring module is accessed in wind-powered electricity generation unit accessory power supply loop, between the electric component in accessory power supply loop and electrical network, by stabilized voltage power supply, isolate.
2. wind-powered electricity generation unit as claimed in claim 1, is characterized in that: a plurality of subsystems in described access accessory power supply loop comprise yaw system, pitch-controlled system, cooling system.
3. wind-powered electricity generation unit overcomes a method for power network fluctuation impact, is that application rights requires the wind-powered electricity generation unit described in 1, it is characterized in that comprising the following steps:
When a, power network fluctuation or generation electrical network are asymmetric, full power convertor carries out excitation control to generator, the output electric energy rectification of generator and inversion are processed, make amplitude, frequency and the phase angle of generator output voltage and amplitude, frequency and the phase angle of line voltage consistent, motor still operates in symmetry status;
After b, line voltage fluctuate, power network monitoring module real-time sampling on-Line Voltage, voltage signal is sent to PLC controller, PLC summary responses also send the instruction of protection unit, stabilized voltage power supply is accessed to accessory power supply loop, stabilized voltage power supply compensates voltage magnitude with the response speed of 10～30ms, the voltage of output amplitude, frequency stabilization;
C, the built-in Control System Software of PLC controller, carry out Real-Time Monitoring, control in real time main power circuit and accessory power supply loop, completes wind-powered electricity generation set yaw, becomes oar and refrigerating function, makes wind-powered electricity generation stable operation of unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604353.8A CN103595073B (en) | 2013-11-23 | 2013-11-23 | A kind of Wind turbines and Wind turbines overcome the method for grid fluctuations affect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604353.8A CN103595073B (en) | 2013-11-23 | 2013-11-23 | A kind of Wind turbines and Wind turbines overcome the method for grid fluctuations affect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103595073A true CN103595073A (en) | 2014-02-19 |
| CN103595073B CN103595073B (en) | 2016-07-06 |
Family
ID=50085108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310604353.8A Active CN103595073B (en) | 2013-11-23 | 2013-11-23 | A kind of Wind turbines and Wind turbines overcome the method for grid fluctuations affect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103595073B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549614A (en) * | 2016-12-12 | 2017-03-29 | 科诺伟业风能设备（北京）有限公司 | A kind of wind generating set pitch control is away from system power network fluctuation guard method |
| CN110226274A (en) * | 2016-10-26 | 2019-09-10 | 菱重维斯塔斯海上风力有限公司 | Auxiliary power is provided when high pressure link does not work |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007124780A (en) * | 2005-10-27 | 2007-05-17 | Hitachi Industrial Equipment Systems Co Ltd | Power storage system and wind power station |
| CN101873072A (en) * | 2010-06-24 | 2010-10-27 | 太原理工大学 | Three-phase digital power supply device for mines |
| CN102187094A (en) * | 2008-09-19 | 2011-09-14 | 维斯塔斯风力系统集团公司 | A turbine farm having an auxiliary power supply |
| CN102882230A (en) * | 2012-09-21 | 2013-01-16 | 上海交通大学 | Wind electricity-based electric energy quality series compensator |
| CN103256175A (en) * | 2012-02-17 | 2013-08-21 | 周登荣 | Wind energy utilization system |
| CN103580029A (en) * | 2012-07-31 | 2014-02-12 | 华锐风电科技(集团)股份有限公司 | Control system and method of power supply loop of wind generating set |
-
2013
- 2013-11-23 CN CN201310604353.8A patent/CN103595073B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007124780A (en) * | 2005-10-27 | 2007-05-17 | Hitachi Industrial Equipment Systems Co Ltd | Power storage system and wind power station |
| CN102187094A (en) * | 2008-09-19 | 2011-09-14 | 维斯塔斯风力系统集团公司 | A turbine farm having an auxiliary power supply |
| CN101873072A (en) * | 2010-06-24 | 2010-10-27 | 太原理工大学 | Three-phase digital power supply device for mines |
| CN103256175A (en) * | 2012-02-17 | 2013-08-21 | 周登荣 | Wind energy utilization system |
| CN103580029A (en) * | 2012-07-31 | 2014-02-12 | 华锐风电科技(集团)股份有限公司 | Control system and method of power supply loop of wind generating set |
| CN102882230A (en) * | 2012-09-21 | 2013-01-16 | 上海交通大学 | Wind electricity-based electric energy quality series compensator |
Non-Patent Citations (1)
| Title |
|---|
| 徐凤星等: "电网电压严重不对称或零电压时DFIG风电机组不间断运行的实现", 《大功率变流技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110226274A (en) * | 2016-10-26 | 2019-09-10 | 菱重维斯塔斯海上风力有限公司 | Auxiliary power is provided when high pressure link does not work |
| CN110226274B (en) * | 2016-10-26 | 2023-02-10 | 维斯塔斯风力系统集团公司 | Providing auxiliary power when a high voltage link is not functioning |
| CN106549614A (en) * | 2016-12-12 | 2017-03-29 | 科诺伟业风能设备（北京）有限公司 | A kind of wind generating set pitch control is away from system power network fluctuation guard method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103595073B (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Errami et al. | A performance comparison of a nonlinear and a linear control for grid connected PMSG wind energy conversion system | |
| Geng et al. | Stability analysis and improvements for variable-speed multipole permanent magnet synchronous generator-based wind energy conversion system | |
| EP2182207B2 (en) | Wide-area transmission control of windfarms | |
| TWI544715B (en) | Controller and electric power grid support system | |
| Mansouri et al. | Internal electrical protection of wind turbine with doubly fed induction generator | |
| CN103795081A (en) | Method for controlling low voltage ride-through of direct-drive type wind power system | |
| CN105098833A (en) | Asynchronous constant speed wind turbine system for micro grid and working method thereof | |
| Rosyadi et al. | Fuzzy-PI controller design for PM wind generator to improve fault ride through of wind farm | |
| CN107425542B (en) | The control method of DFIG reactive power compensation in low voltage failure crossing process | |
| Suja et al. | Power quality improvement in grid connected wind energy system using STATCOM | |
| RU2649868C2 (en) | Method for controlling wind power plants | |
| CN103595073B (en) | A kind of Wind turbines and Wind turbines overcome the method for grid fluctuations affect | |
| Dahiya | Superconducting magnetic energy storage coupled static compensator for stability enhancement of the doubly fed induction generator integrated system | |
| Wang et al. | Analysis of a commercial wind farm in Taiwan Part I: Measurement results and simulations | |
| CN102852714A (en) | High-power wind power generating system | |
| CN104184167A (en) | Inverter grid-connected system and control method thereof | |
| CN102097812A (en) | Wind generating set and reactive power control method thereof | |
| CN103580029A (en) | Control system and method of power supply loop of wind generating set | |
| Joshı et al. | Analysis of stability of wind based distributed energy generation system | |
| Tian et al. | Active power and reactive power FRT coordinated control strategy of offshore wind farms connected to power grid with AC cables | |
| Gatavi et al. | Low voltage ride-through enhancement in DFIG-based wind turbine | |
| CN102201677B (en) | Power load cache system | |
| CN104993762A (en) | Fault operation method under doubly-fed wind power generator direct power control | |
| Qu et al. | VSG-based PMSG multi-machine parallel with DC droop control strategy | |
| Mohseni et al. | A review of enabling technologies for large wind power plants to comply with recent grid codes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190422 Granted publication date: 20160706 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220422 Granted publication date: 20160706 |