WO2022134639A1 - Method for conjunctively controlling wind turbine generator having tandem double-rotors - Google Patents
Method for conjunctively controlling wind turbine generator having tandem double-rotors Download PDFInfo
- Publication number
- WO2022134639A1 WO2022134639A1 PCT/CN2021/114941 CN2021114941W WO2022134639A1 WO 2022134639 A1 WO2022134639 A1 WO 2022134639A1 CN 2021114941 W CN2021114941 W CN 2021114941W WO 2022134639 A1 WO2022134639 A1 WO 2022134639A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wind
- wind turbine
- rotor
- speed
- turbine
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0276—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling rotor speed, e.g. variable speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/028—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
-
- 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
- Y02E10/72—Wind turbines with rotation axis in wind direction
Definitions
- the invention belongs to the technical field of wind power control, and in particular relates to a coordinated control method for a tandem double-wind turbine wind generator set.
- the tandem double wind turbine structure is valued for its high efficiency and mature key core equipment.
- existing dual wind turbine units use two wind turbines coaxially or connected to the main shaft through bevel gears.
- the two wind rotors in the structure can only rotate at the same speed, and cannot realize the independent operation of the rotational speed and the coordinated control of the front and rear wind rotors, so that the two wind rotors cannot operate in their respective high-efficiency areas, resulting in a low overall efficiency of the unit. .
- the purpose of the present invention is to provide a coordinated control method for a tandem double-wind turbine wind turbine, which can improve the utilization rate of wind energy and reduce the cost per kilowatt-hour of the wind turbine.
- a collaborative control method for a tandem double-wind turbine wind turbine After dividing the operating interval of the front and rear wind turbines and determining the optimal output value, the overall output of the wind turbine is taken as the goal. The output of the front and rear wind rotors is controlled cooperatively.
- the blade pitch angle of the front wind rotor is obtained from the feedback signal of the front wind rotor pitch system sensor, and the rear wind rotor blade pitch angle is obtained by the rear wind rotor pitch system.
- the sensor feedback signal is obtained.
- the rotational speed of the front wind rotor is obtained from the feedback signal of the outer rotor speed of the dual rotor generator, and the rotational speed of the rear wind rotor is obtained from the feedback signal of the inner rotor of the dual rotor generator.
- the best tip speed ratio of the front wind rotor design determine the best rotation speed corresponding to different wind speeds before the rated wind speed, determine the best pitch angle corresponding to different wind speeds after the rated wind speed, and determine the front wind rotor according to the blade limit load.
- Outlet wind speed According to the optimal tip speed ratio of the rear rotor design, determine the optimal rotation speed corresponding to different wind speeds before the rated wind speed of the rear rotor, determine the optimal pitch angle corresponding to different wind speeds after the rated wind speed, and determine the rear wind according to the ultimate load of the blade. Wheel cut out wind speed.
- the respective rotational speeds of the front wind rotor and the rear wind rotor are adjusted by adjusting the current of the converter, and then the overall output of the tandem double wind turbine wind turbine can be maximized by adjusting the power of the double wind turbines.
- dividing the operating interval of the front and rear wind rotors is to divide the operating intervals of the front and rear wind rotors according to the wind speed sections corresponding to the high-efficiency areas of the front and rear wind rotors, with the goal of the widest high-efficiency area of the unit.
- the starting wind speed, rated wind speed and shutdown wind speed of the rear wind rotor are higher than those of the front wind rotor.
- the output synergy is achieved by changing the rotational speed and pitch angle of the front and rear wind rotors to achieve the control objectives of the highest power and the lowest load.
- the rear wind wheel is controlled to provide a reverse braking torque for the front wind wheel; when the voltage of the grid drops, the voltage of the two wind wheels is coordinated to make the rear wind wheel continue to continue. run.
- the power curve of the front wind turbine is designed according to a conventional single wind turbine unit, and the power curve of the rear wind turbine has redundancy.
- the present invention has the following beneficial technical effects:
- the cooperative control method for a tandem double-wind turbine wind turbine disclosed in the present invention aims at the problem that the current tandem double-wind turbine cannot be decoupled in operation and the operation efficiency is low, and proposes a tandem with transmission decoupling.
- the cooperative control strategy of the front and rear wind turbines of the double-wind turbine wind turbine after dividing the operating interval of the front and rear wind turbines and determining the optimal output value, the goal is to maximize the overall output of the wind turbine, rather than the output of a certain wind turbine.
- the rotational speed and pitch angle of the front and rear wind rotors are used to coordinate the output of the front and rear wind rotors.
- the invention realizes decoupling from the drive of the wind generator set, so that the independent control of the front and rear wind rotors can be realized, thereby providing the possibility for cooperative control in essence;
- the cooperation of the front and rear wind turbines makes the unit more efficient, the high-efficiency area is wider, and the grid connection is more friendly, which can greatly reduce the kWh cost of the wind turbine and improve the grid connection characteristics of the unit.
- the wind energy is absorbed by the front wind rotor after the fluid bypasses the front wind rotor, and the fluid velocity of the fluid flowing into the rear wind rotor is reduced, there is an operating interval difference between the front wind rotor and the rear wind rotor relative to the incoming wind speed.
- the operating range of the front wind rotor is designed according to the conventional wind turbine, and the rear wind rotor has a higher starting wind speed, and the corresponding rated wind speed is higher, and the shutdown wind speed is also higher.
- the two wind turbine coordination control stages provide reverse braking torque for the front wind rotor by controlling the rear wind rotor, and through the coordinated load reduction strategy, the unit load is minimized and the unit load is guaranteed.
- Safety When the voltage of the power grid drops, by coordinating the voltages of the two wind turbines, the rear wind turbine continues to operate, maintains the voltage level of the generator, and increases the network source adjustability of the double wind turbine unit.
- the power curve of the front wind turbine is designed according to the conventional single wind turbine unit, and the power curve of the rear wind turbine has redundancy, which can control the output of the two wind turbines through coordination, and finally make the double wind turbine unit generate higher power before the rated power. , which can adapt to a wider wind speed segment.
- Fig. 1 is the logic diagram of the cooperative control method of the tandem double-wind turbine wind turbine of the present invention
- Fig. 2 is the schematic diagram of the optimal operation interval division of the front and rear wind wheels of the present invention.
- FIG. 3 is a schematic diagram of the power generation of the front and rear wind turbines of the present invention.
- the logic diagram of the cooperative control method of the tandem dual-wind turbine wind turbine of the present invention is shown in Figure 1.
- the system control strategy of the dual-wind turbine wind turbine includes: the operation interval of the dual-wind turbine and the optimal coordinated output of the front and rear wind turbines; the optimal front wind turbine Output setting, the output of the rear wind rotor is optimally set; the front wind rotor is controlled by variable speed and pitch, and the rear wind rotor is controlled by variable speed and pitch.
- the pitch angle of the front wind rotor blade is obtained from the feedback signal of the front wind rotor pitch system sensor, and the rear wind rotor blade pitch angle is obtained from the sensor feedback signal of the rear wind rotor pitch system.
- the rotational speed of the front rotor is obtained from the feedback signal of the outer rotor of the dual-rotor generator, and the rotational speed of the rear rotor is obtained from the feedback signal of the inner rotor of the dual-rotor generator.
- Adjust the output of the front wind wheel by adjusting the rotational speed and pitch angle of the front wind wheel. Adjust the speed and pitch angle of the rear rotor, and adjust the output of the rear rotor. By adjusting the rotational speed and pitch angle of the front and rear rotors, the overall output of the unit is maximized and the load is minimized, rather than being limited to the front or rear rotor with the largest output. Further, by dividing the optimal operation interval of the rear wind turbine, it is obtained that the overall high efficiency area of the unit is wider.
- the power curve of the front wind turbine is designed according to the conventional single wind turbine unit, and the rear wind turbine adopts a certain redundancy design. wider wind speed segment.
- the optimal tip speed ratio of the front wind rotor design determine the optimal rotation speed corresponding to different wind speeds before the rated wind speed, determine the optimal pitch angle corresponding to different wind speeds after the rated wind speed, and determine the cut-out wind speed of the front wind rotor according to the limit load of the blade; Design the optimal tip speed ratio of the rear rotor, determine the optimal rotation speed corresponding to different wind speeds before the rated wind speed of the rear rotor, determine the optimal pitch angle corresponding to different wind speeds after the rated wind speed, and determine the cut-out wind speed of the rear rotor according to the limit load of the blade .
- the starting wind speed of the front wind rotor is V1min
- the rated wind speed is V1N
- the optimal Cp1max operating range of the wind rotor is between V1min and V1N
- V1max is the wind speed of the wind rotor, which is determined by the limit load of the unit.
- the fluid velocity of the rear rotor will decrease, so the inflow velocity of the rear rotor is lower than the inflow velocity of the front rotor.
- the starting wind speed of the rear rotor is V2min
- the rated wind speed is V2N
- the best Cp2max operation of the wind rotor is between V2min and V2N, and the starting wind speed and rated wind speed of the rear wind rotor are higher than those of the front wind rotor.
- the high-efficiency area of the double wind turbine unit is wider than that of the single wind turbine unit of the same capacity.
- the rear wind turbine adopts a certain redundancy design, and its rated power corresponds to a higher wind speed.
- the rated power of the dual-wind turbine unit corresponds to a higher wind speed, and the unit can operate in a wider wind speed section. Maintain a high efficiency zone.
- the two wind rotor coordination control stages provide reverse braking torque for the front wind rotor by controlling the rear wind rotor, and through the coordinated load reduction strategy, the unit load is minimized and the unit safety is ensured.
- the voltage of the power grid drops, by coordinating the voltages of the two wind turbines, the rear wind turbine continues to operate, maintains the voltage level of the generator, and increases the network source adjustability of the double wind turbine unit.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
A method for conjunctively controlling a wind turbine generator having tandem double-rotors, comprising: first dividing operating sections of front and rear rotors and determining the optimal output power values; and then conjunctively controlling output power of the front and rear rotors by adjusting rotation speeds and pitch angles of the front and rear rotors, in order to maximize the output power of the whole wind turbine generator. In order to maximize the overall efficiency of the generator and minimize the load of the generator, the front and rear rotors work in conjunction with each other, so that the generator has higher efficiency, a wider high-efficiency section, and more friendly grid-connection, greatly reducing the levelized cost of electricity of the wind turbine generator, and improving the grid-connection characteristics of the generator.
Description
本申请要求于2020年12月22日提交中国专利局的申请号为202011529919.1、发明名称为“一种串列式双风轮风电机组协同控制方法”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with the application number 202011529919.1 and the invention titled "A Synergistic Control Method for Tandem Double Wind Turbine Wind Turbines" filed with the China Patent Office on December 22, 2020, the entire contents of which are passed Reference is incorporated in this application.
本发明属于风电控制技术领域,具体涉及一种串列式双风轮风电机组协同控制方法。The invention belongs to the technical field of wind power control, and in particular relates to a coordinated control method for a tandem double-wind turbine wind generator set.
随着风电装机容量的快速发展,目前主流风电机组采用单风轮水平轴形式,且朝着大型化发展,但随着风电机组大型化发展,其核心关键技术受到诸多限制,迫切需要发展新形式高效风能转换装置。With the rapid development of wind power installed capacity, the current mainstream wind turbines adopt the single-rotor horizontal axis form, and they are developing towards large-scale. High-efficiency wind energy conversion device.
串列式双风轮结构形式以其高效率、关键核心设备成熟而受到重视。但是现有的双风轮机组采用两个风轮共轴或通过锥形齿轮连接至主轴。所述结构形式的两个风轮只能同转速,不能实现转速独立运行、前后风轮的协同控制,进而使得两个风轮不能在各自的高效区运行,导致所述机组整机效率偏低。The tandem double wind turbine structure is valued for its high efficiency and mature key core equipment. However, existing dual wind turbine units use two wind turbines coaxially or connected to the main shaft through bevel gears. The two wind rotors in the structure can only rotate at the same speed, and cannot realize the independent operation of the rotational speed and the coordinated control of the front and rear wind rotors, so that the two wind rotors cannot operate in their respective high-efficiency areas, resulting in a low overall efficiency of the unit. .
发明内容SUMMARY OF THE INVENTION
为了解决上述问题,本发明的目的在于提供一种串列式双风轮风电机组协同控制方法,可提高风能利用率,降低风力发电机组度电成本。In order to solve the above problems, the purpose of the present invention is to provide a coordinated control method for a tandem double-wind turbine wind turbine, which can improve the utilization rate of wind energy and reduce the cost per kilowatt-hour of the wind turbine.
本发明是通过以下技术方案来实现:The present invention is achieved through the following technical solutions:
一种串列式双风轮风电机组协同控制方法,划分前后风轮的运行区间并确定最优出力值后,以风电机组整体出力最大为目标,通过调节前后风轮的转速及桨距角,进行前后风轮的出力协同控制。A collaborative control method for a tandem double-wind turbine wind turbine. After dividing the operating interval of the front and rear wind turbines and determining the optimal output value, the overall output of the wind turbine is taken as the goal. The output of the front and rear wind rotors is controlled cooperatively.
优选地,调节前风轮和后风轮的桨距角时,前风轮叶片桨距角由前风轮变桨系统传感器反馈信号获得,后风轮叶片桨距角由后风轮变桨系统传感器反馈信号获得。Preferably, when adjusting the pitch angles of the front wind rotor and the rear wind rotor, the blade pitch angle of the front wind rotor is obtained from the feedback signal of the front wind rotor pitch system sensor, and the rear wind rotor blade pitch angle is obtained by the rear wind rotor pitch system. The sensor feedback signal is obtained.
优选地,调节前风轮和后风轮的转速时,前风轮转速由双转子发电机外转子转速反馈信号获得,后风轮转速由双转子发电机内转子反馈信号获得。Preferably, when adjusting the rotational speed of the front wind rotor and the rear wind rotor, the rotational speed of the front wind rotor is obtained from the feedback signal of the outer rotor speed of the dual rotor generator, and the rotational speed of the rear wind rotor is obtained from the feedback signal of the inner rotor of the dual rotor generator.
进一步优选地,根据前风轮设计最佳尖速比,确定额定风速前不同风速对应的最佳转速,确定额定风速后不同风速对应的最佳桨距角,根据叶片极限载荷确定前风轮切出风速;根据后风轮设计最佳尖速比,确定后风轮额定风速前不同风速对应的最佳转速,确定额定风速后不同风速对应的最佳桨距角,根据叶片极限载荷确定后风轮切出风速。Further preferably, according to the best tip speed ratio of the front wind rotor design, determine the best rotation speed corresponding to different wind speeds before the rated wind speed, determine the best pitch angle corresponding to different wind speeds after the rated wind speed, and determine the front wind rotor according to the blade limit load. Outlet wind speed: According to the optimal tip speed ratio of the rear rotor design, determine the optimal rotation speed corresponding to different wind speeds before the rated wind speed of the rear rotor, determine the optimal pitch angle corresponding to different wind speeds after the rated wind speed, and determine the rear wind according to the ultimate load of the blade. Wheel cut out wind speed.
优选地,通过调节变流器电流,来调节前风轮和后风轮各自的转速,进而通过双风轮功率的调节,使串列式双风轮风电机组的整体出力最大。Preferably, the respective rotational speeds of the front wind rotor and the rear wind rotor are adjusted by adjusting the current of the converter, and then the overall output of the tandem double wind turbine wind turbine can be maximized by adjusting the power of the double wind turbines.
优选地,划分前后风轮的运行区间是根据前后风轮高效区所对应的风速段,以机组高效区最宽为目标,划分前后风轮的运行区间。Preferably, dividing the operating interval of the front and rear wind rotors is to divide the operating intervals of the front and rear wind rotors according to the wind speed sections corresponding to the high-efficiency areas of the front and rear wind rotors, with the goal of the widest high-efficiency area of the unit.
进一步优选地,运行区间划分时,后风轮的启动风速、额定风速和停机风速高于前风轮。Further preferably, when the operating interval is divided, the starting wind speed, rated wind speed and shutdown wind speed of the rear wind rotor are higher than those of the front wind rotor.
优选地,出力协同是通过改变前后风轮的转速、桨距角,达到功率最高、载荷最低的控制目标。Preferably, the output synergy is achieved by changing the rotational speed and pitch angle of the front and rear wind rotors to achieve the control objectives of the highest power and the lowest load.
优选地,当遇到极端风况或停机风速时,通过控制后风轮为前风轮提供反向制动力矩;当电网出现电压跌落时,通过协调两风轮的电压,使后风轮继续运行。Preferably, when extreme wind conditions or shutdown wind speed is encountered, the rear wind wheel is controlled to provide a reverse braking torque for the front wind wheel; when the voltage of the grid drops, the voltage of the two wind wheels is coordinated to make the rear wind wheel continue to continue. run.
优选地,前风轮功率曲线按常规单风轮机组设计,后风轮功率曲线具有冗余度。Preferably, the power curve of the front wind turbine is designed according to a conventional single wind turbine unit, and the power curve of the rear wind turbine has redundancy.
与现有技术相比,本发明具有以下有益的技术效果:Compared with the prior art, the present invention has the following beneficial technical effects:
本发明公开的串列式双风轮风电机组协同控制方法,针对目前串列式双风轮机组在运行上未能解耦,运行效率偏低的问题,提出一种具有传动解耦的串列双风轮风电机组前后风轮协同控制策略,通过划分前后风轮的运行区间并确定最优出力值后,以风电机组整体出力最大为目标,而不是 以某一风轮出力为目标,通过调节前后风轮的转速及桨距角,进行前后风轮的出力协同控制。本发明从风力发电机组传动上实现了解耦,从而可实现前后风轮的独立控制,从而为协同控制从本质上提供了可能性;本发明以机组整机效率最高、载荷最低为控制目标,前后两风轮协同配合,使机组效率更高,高效区更宽,并网更加友好,可大幅度降低风电机组度电成本,提高机组并网特性。The cooperative control method for a tandem double-wind turbine wind turbine disclosed in the present invention aims at the problem that the current tandem double-wind turbine cannot be decoupled in operation and the operation efficiency is low, and proposes a tandem with transmission decoupling. The cooperative control strategy of the front and rear wind turbines of the double-wind turbine wind turbine, after dividing the operating interval of the front and rear wind turbines and determining the optimal output value, the goal is to maximize the overall output of the wind turbine, rather than the output of a certain wind turbine. The rotational speed and pitch angle of the front and rear wind rotors are used to coordinate the output of the front and rear wind rotors. The invention realizes decoupling from the drive of the wind generator set, so that the independent control of the front and rear wind rotors can be realized, thereby providing the possibility for cooperative control in essence; The cooperation of the front and rear wind turbines makes the unit more efficient, the high-efficiency area is wider, and the grid connection is more friendly, which can greatly reduce the kWh cost of the wind turbine and improve the grid connection characteristics of the unit.
进一步地,由于流体绕过前风轮后,风能被前风轮吸收,流入后风轮流体速度降低,所以相对于来流风速,前风轮与后风轮之间存在运行区间差。前风轮运行区间按常规风电机组设计,后风轮启动风速更高,相应的额定风速更大,停机风速也更高。Further, since the wind energy is absorbed by the front wind rotor after the fluid bypasses the front wind rotor, and the fluid velocity of the fluid flowing into the rear wind rotor is reduced, there is an operating interval difference between the front wind rotor and the rear wind rotor relative to the incoming wind speed. The operating range of the front wind rotor is designed according to the conventional wind turbine, and the rear wind rotor has a higher starting wind speed, and the corresponding rated wind speed is higher, and the shutdown wind speed is also higher.
进一步地,在遇到极端风况或停机风速时,两风轮协调控制级通过控制后风轮为前风轮提供反向制动力矩,通过协同降载的策略,使机组载荷最小,保证机组安全。当电网出现电压跌落时,通过协调两风轮的电压,使后风轮继续运行,维持发电机电压等级,增加双风轮机组网源可调性。Further, when encountering extreme wind conditions or shutdown wind speed, the two wind turbine coordination control stages provide reverse braking torque for the front wind rotor by controlling the rear wind rotor, and through the coordinated load reduction strategy, the unit load is minimized and the unit load is guaranteed. Safety. When the voltage of the power grid drops, by coordinating the voltages of the two wind turbines, the rear wind turbine continues to operate, maintains the voltage level of the generator, and increases the network source adjustability of the double wind turbine unit.
进一步地,前风轮功率曲线按常规单风轮机组设计,后风轮功率曲线具有冗余度,能够通过协同控制两风轮的出力,最终使双风轮机组在额定功率前发电量更高,可适应更宽的风速段。Further, the power curve of the front wind turbine is designed according to the conventional single wind turbine unit, and the power curve of the rear wind turbine has redundancy, which can control the output of the two wind turbines through coordination, and finally make the double wind turbine unit generate higher power before the rated power. , which can adapt to a wider wind speed segment.
图1为本发明的串列式双风轮风电机组协同控制方法的逻辑图;Fig. 1 is the logic diagram of the cooperative control method of the tandem double-wind turbine wind turbine of the present invention;
图2为本发明的前后风轮最佳运行区间划分示意图;Fig. 2 is the schematic diagram of the optimal operation interval division of the front and rear wind wheels of the present invention;
图3为本发明的前后风轮发电功率示意图。FIG. 3 is a schematic diagram of the power generation of the front and rear wind turbines of the present invention.
为了使本领域的技术人员更好地理解本发明的技术方案,下面结合附图和具体实施例对本发明作进一步的详细说明。In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
本发明的串列式双风轮风电机组协同控制方法,逻辑图如图1,双风轮风电机组系统控制策略包括:双风轮运行区间及前后风轮协同出力最优; 前风轮最优出力设定,后风轮出力最优设定;前风轮变速变桨控制,后风轮变速变桨控制。The logic diagram of the cooperative control method of the tandem dual-wind turbine wind turbine of the present invention is shown in Figure 1. The system control strategy of the dual-wind turbine wind turbine includes: the operation interval of the dual-wind turbine and the optimal coordinated output of the front and rear wind turbines; the optimal front wind turbine Output setting, the output of the rear wind rotor is optimally set; the front wind rotor is controlled by variable speed and pitch, and the rear wind rotor is controlled by variable speed and pitch.
前风轮叶片桨距角由前风轮变桨系统传感器反馈信号获得,后风轮叶片桨距角由后风轮变桨系统传感器反馈信号获得。前风轮转速由双转子发电机外转子转速反馈信号获得,后风轮转速由双转子发电机内转子反馈信号获得。通过调节变流器电流,来调节双风轮各自转速,达到控制双风轮功率的目的。The pitch angle of the front wind rotor blade is obtained from the feedback signal of the front wind rotor pitch system sensor, and the rear wind rotor blade pitch angle is obtained from the sensor feedback signal of the rear wind rotor pitch system. The rotational speed of the front rotor is obtained from the feedback signal of the outer rotor of the dual-rotor generator, and the rotational speed of the rear rotor is obtained from the feedback signal of the inner rotor of the dual-rotor generator. By adjusting the current of the converter, the respective rotational speeds of the double wind wheels are adjusted to achieve the purpose of controlling the power of the double wind wheels.
通过调节前风轮转速及桨距角,调节前风轮出力。调节后风轮转速及桨距角,调节后风轮出力。通过调节前后风轮的转速和桨距角,使机组总体出力最大和载荷最小,而不局限于前风轮或后风轮某一风轮出力最大。进一步地,通过划分后风轮最优运行区间,得到机组总体的高效区更宽。前风轮功率曲线按常规单风轮机组设计,后风轮采用一定的冗余度设计,通过协同控制两风轮的出力,最终使双风轮机组在额定功率前发电量更高,可适应更宽的风速段。Adjust the output of the front wind wheel by adjusting the rotational speed and pitch angle of the front wind wheel. Adjust the speed and pitch angle of the rear rotor, and adjust the output of the rear rotor. By adjusting the rotational speed and pitch angle of the front and rear rotors, the overall output of the unit is maximized and the load is minimized, rather than being limited to the front or rear rotor with the largest output. Further, by dividing the optimal operation interval of the rear wind turbine, it is obtained that the overall high efficiency area of the unit is wider. The power curve of the front wind turbine is designed according to the conventional single wind turbine unit, and the rear wind turbine adopts a certain redundancy design. wider wind speed segment.
根据前风轮设计最佳尖速比,确定额定风速前不同风速对应的最佳转速,确定额定风速后不同风速对应的最佳桨距角,根据叶片极限载荷确定前风轮切出风速;根据后风轮设计最佳尖速比,确定后风轮额定风速前不同风速对应的最佳转速,确定额定风速后不同风速对应的最佳桨距角,根据叶片极限载荷确定后风轮切出风速。According to the optimal tip speed ratio of the front wind rotor design, determine the optimal rotation speed corresponding to different wind speeds before the rated wind speed, determine the optimal pitch angle corresponding to different wind speeds after the rated wind speed, and determine the cut-out wind speed of the front wind rotor according to the limit load of the blade; Design the optimal tip speed ratio of the rear rotor, determine the optimal rotation speed corresponding to different wind speeds before the rated wind speed of the rear rotor, determine the optimal pitch angle corresponding to different wind speeds after the rated wind speed, and determine the cut-out wind speed of the rear rotor according to the limit load of the blade .
如图2,前风轮启动风速为V1min,额定风速为V1N,风轮最佳Cp1max运行区间为V1min与V1N之间,V1max为风轮切出风速,由机组极限载荷确定。As shown in Figure 2, the starting wind speed of the front wind rotor is V1min, the rated wind speed is V1N, the optimal Cp1max operating range of the wind rotor is between V1min and V1N, and V1max is the wind speed of the wind rotor, which is determined by the limit load of the unit.
气流流过前风轮后,进入后风轮流体速度会降低,所以后风轮入流速度低于前风轮入流速度,后风轮启动风速为V2min,额定风速为V2N,风轮最佳Cp2max运行区间为V2min与V2N之间,后风轮启动风速和额定风速均高于前风轮。After the airflow flows through the front rotor, the fluid velocity of the rear rotor will decrease, so the inflow velocity of the rear rotor is lower than the inflow velocity of the front rotor. The starting wind speed of the rear rotor is V2min, the rated wind speed is V2N, and the best Cp2max operation of the wind rotor. The interval is between V2min and V2N, and the starting wind speed and rated wind speed of the rear wind rotor are higher than those of the front wind rotor.
双风轮机组的高效区比同容量单风轮机组更宽。The high-efficiency area of the double wind turbine unit is wider than that of the single wind turbine unit of the same capacity.
如图3,后风轮采用一定的冗余度设计,其额定功率对应的风速更高,采用这种控制策略,双风轮机组额定功率对应的风速更高,机组可在更宽的风速段保持高效区。As shown in Figure 3, the rear wind turbine adopts a certain redundancy design, and its rated power corresponds to a higher wind speed. Using this control strategy, the rated power of the dual-wind turbine unit corresponds to a higher wind speed, and the unit can operate in a wider wind speed section. Maintain a high efficiency zone.
在遇到极端风况或停机风速时,两风轮协调控制级通过控制后风轮为前风轮提供反向制动力矩,通过协同降载的策略,使机组载荷最小,保证机组安全。当电网出现电压跌落时,通过协调两风轮的电压,使后风轮继续运行,维持发电机电压等级,增加双风轮机组网源可调性。When encountering extreme wind conditions or shutdown wind speed, the two wind rotor coordination control stages provide reverse braking torque for the front wind rotor by controlling the rear wind rotor, and through the coordinated load reduction strategy, the unit load is minimized and the unit safety is ensured. When the voltage of the power grid drops, by coordinating the voltages of the two wind turbines, the rear wind turbine continues to operate, maintains the voltage level of the generator, and increases the network source adjustability of the double wind turbine unit.
以上仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be regarded as It is the protection scope of the present invention.
Claims (10)
- 一种串列式双风轮风电机组协同控制方法,其特征在于,划分前后风轮的运行区间并确定最优出力值后,以风电机组整体出力最大为目标,通过调节前后风轮的转速及桨距角,进行前后风轮的出力协同控制。A tandem dual-wind-wheel wind turbine cooperative control method is characterized in that, after dividing the operating interval of the front and rear wind turbines and determining the optimal output value, the overall output of the wind turbine is taken as the goal, and by adjusting the rotational speed of the front and rear wind turbines and The pitch angle is used to coordinate the output of the front and rear rotors.
- 如权利要求1所述的串列式双风轮风电机组协同控制方法,其特征在于,调节前风轮和后风轮的桨距角时,前风轮叶片桨距角由前风轮变桨系统传感器反馈信号获得,后风轮叶片桨距角由后风轮变桨系统传感器反馈信号获得。The coordinated control method for a tandem double-wind turbine wind turbine according to claim 1, wherein when adjusting the pitch angles of the front wind rotor and the rear wind rotor, the pitch angle of the front wind rotor is changed by the pitch angle of the front wind rotor. The feedback signal of the system sensor is obtained, and the pitch angle of the rear rotor blade is obtained from the feedback signal of the rear rotor pitch system sensor.
- 如权利要求1所述的串列式双风轮风电机组协同控制方法,其特征在于,调节前风轮和后风轮的转速时,前风轮转速由双转子发电机外转子转速反馈信号获得,后风轮转速由双转子发电机内转子反馈信号获得。The method for coordinated control of a tandem double-wind turbine wind turbine according to claim 1, wherein when adjusting the rotational speeds of the front wind rotor and the rear wind rotor, the rotational speed of the front wind rotor is obtained from the feedback signal of the rotational speed of the outer rotor of the dual-rotor generator. , the speed of the rear rotor is obtained from the feedback signal of the inner rotor of the dual-rotor generator.
- 如权利要求3所述的串列式双风轮风电机组协同控制方法,其特征在于,根据前风轮设计最佳尖速比,确定额定风速前不同风速对应的最佳转速,确定额定风速后不同风速对应的最佳桨距角,根据叶片极限载荷确定前风轮切出风速;根据后风轮设计最佳尖速比,确定后风轮额定风速前不同风速对应的最佳转速,确定额定风速后不同风速对应的最佳桨距角,根据叶片极限载荷确定后风轮切出风速。The collaborative control method for a tandem double-wind turbine wind turbine as claimed in claim 3, wherein, according to the optimal tip speed ratio of the front wind rotor design, the optimal rotational speed corresponding to different wind speeds before the rated wind speed is determined, and after the rated wind speed is determined For the optimal pitch angle corresponding to different wind speeds, the cut-out wind speed of the front wind rotor is determined according to the ultimate load of the blade; according to the optimal tip speed ratio of the design of the rear wind rotor, the optimal speed corresponding to different wind speeds before the rated wind speed of the rear wind rotor is determined, and the rated wind speed is determined. After the wind speed, the optimal pitch angle corresponding to different wind speeds is determined according to the ultimate load of the blade.
- 如权利要求1所述的串列式双风轮风电机组协同控制方法,其特征在于,通过调节变流器电流,来调节前风轮和后风轮各自的转速,进而通过双风轮功率的调节,使串列式双风轮风电机组的整体出力最大。The coordinated control method for a tandem double-wind turbine wind turbine according to claim 1, wherein the respective rotational speeds of the front and rear wind-rotors are adjusted by adjusting the current of the converter, and then the respective rotational speeds of the front-wind-wheel and the rear-wind-wheel are adjusted by adjusting the current of the converter. Adjustment to maximize the overall output of the tandem double-wind turbine wind turbine.
- 如权利要求1所述的串列式双风轮风电机组协同控制方法,其特征在于,划分前后风轮的运行区间是根据前后风轮高效区所对应的风速段,以机组高效区最宽为目标,划分前后风轮的运行区间。The method for collaborative control of a tandem double-wind turbine wind turbine according to claim 1, wherein the operation range of the front and rear wind turbines is divided according to the wind speed sections corresponding to the high-efficiency areas of the front and rear wind turbines, and the widest high-efficiency area of the unit is The goal is to divide the operating range of the front and rear wind rotors.
- 如权利要求6所述的串列式双风轮风电机组协同控制方法,其特征在于,运行区间划分时,后风轮的启动风速、额定风速和停机风速高于前风轮。The collaborative control method for a tandem double-wind turbine wind turbine according to claim 6, wherein when the operating interval is divided, the starting wind speed, rated wind speed and shutdown wind speed of the rear wind turbine are higher than those of the front wind turbine.
- 如权利要求1所述的串列式双风轮风电机组协同控制方法,其特征在于,出力协同是通过改变前后风轮的转速、桨距角,达到功率最高、载荷最低的控制目标。The coordinated control method for a tandem double-wind turbine wind turbine according to claim 1, wherein the output coordination is achieved by changing the rotational speed and pitch angle of the front and rear wind turbines to achieve the highest power and lowest load control goals.
- 如权利要求1所述的串列式双风轮风电机组协同控制方法,其特征 在于,当遇到极端风况或停机风速时,通过控制后风轮为前风轮提供反向制动力矩;当电网出现电压跌落时,通过协调两风轮的电压,使后风轮继续运行。The coordinated control method for a tandem double-wind turbine wind turbine according to claim 1, wherein when extreme wind conditions or shutdown wind speeds are encountered, the rear wind rotor is controlled to provide a reverse braking torque for the front wind rotor; When the grid voltage drops, by coordinating the voltages of the two wind turbines, the rear wind turbine can continue to run.
- 如权利要求1所述的串列式双风轮风电机组协同控制方法,其特征在于,前风轮功率曲线按常规单风轮机组设计,后风轮功率曲线具有冗余度。The coordinated control method for a tandem double-wind turbine wind turbine set according to claim 1, wherein the power curve of the front wind turbine is designed according to a conventional single wind turbine set, and the power curve of the rear wind turbine has redundancy.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011529919.1 | 2020-12-22 | ||
CN202011529919.1A CN112648141B (en) | 2020-12-22 | 2020-12-22 | Tandem type double-wind-wheel wind turbine generator set cooperative control method |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022134639A1 true WO2022134639A1 (en) | 2022-06-30 |
Family
ID=75359046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2021/114941 WO2022134639A1 (en) | 2020-12-22 | 2021-08-27 | Method for conjunctively controlling wind turbine generator having tandem double-rotors |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN112648141B (en) |
WO (1) | WO2022134639A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115977888A (en) * | 2022-11-24 | 2023-04-18 | 若光若盐(南京)科技有限公司 | Double-wind-wheel double-speed-increasing-box wind generating set |
CN116292095A (en) * | 2023-03-27 | 2023-06-23 | 华北电力大学 | Multi-scene coordinated operation method of tandem double-wind-wheel wind turbine generator |
CN117108445A (en) * | 2023-07-25 | 2023-11-24 | 华北电力大学 | Digital twin simulation method for tandem double-wind-wheel wind turbine generator |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112648141B (en) * | 2020-12-22 | 2021-09-28 | 中国华能集团清洁能源技术研究院有限公司 | Tandem type double-wind-wheel wind turbine generator set cooperative control method |
CN113833603A (en) * | 2021-09-13 | 2021-12-24 | 华北电力大学 | Operation control method for double-wind-wheel wind generating set |
CN115839311A (en) * | 2021-09-18 | 2023-03-24 | 中国华能集团清洁能源技术研究院有限公司 | Method and device for controlling working state of double-wind-wheel wind energy conversion device |
CN115839307A (en) * | 2021-09-18 | 2023-03-24 | 中国华能集团清洁能源技术研究院有限公司 | Control method and device for double-wind-wheel wind energy conversion device and electronic equipment |
CN115839310A (en) * | 2021-09-18 | 2023-03-24 | 中国华能集团清洁能源技术研究院有限公司 | Starting control method and device for double-wind-wheel wind energy conversion device |
CN115839306A (en) * | 2021-09-18 | 2023-03-24 | 中国华能集团清洁能源技术研究院有限公司 | Control method and device for double-wind-wheel wind energy conversion device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150219068A1 (en) * | 2014-01-31 | 2015-08-06 | Ryan Port | Wind turbine having a plurality of airfoil rings and counter rotating generators |
WO2016010450A1 (en) * | 2014-07-16 | 2016-01-21 | Анатолий Георгиевич БАКАНОВ | Dual rotor wind power assembly (variants) |
DE102015102541A1 (en) * | 2015-02-23 | 2016-08-25 | Jugendforschungszentrum Schwarzwald-Schönbuch e. V. | Wind turbine and method for its regulation |
CN109751186A (en) * | 2017-11-02 | 2019-05-14 | 北京普华亿能风电技术有限公司 | The control method and high power wind-driven generator of wind-driven generator |
CN112648141A (en) * | 2020-12-22 | 2021-04-13 | 中国华能集团清洁能源技术研究院有限公司 | Tandem type double-wind-wheel wind turbine generator set cooperative control method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10066597B2 (en) * | 2016-12-14 | 2018-09-04 | Thunderbird Power Corp | Multiple-blade wind machine with shrouded rotors |
US11231007B2 (en) * | 2018-09-21 | 2022-01-25 | University Of Louisiana At Lafayette | Cascaded wind turbine |
CN109441711A (en) * | 2018-12-21 | 2019-03-08 | 覃小鹏 | A kind of suitable inverse double rotary wind power generators |
US20200231275A1 (en) * | 2019-01-18 | 2020-07-23 | Boaz Barry Groman | Dual rotor system |
CN111878300A (en) * | 2020-07-13 | 2020-11-03 | 沈阳工业大学 | Double-wind-wheel wind generating set based on compressed gas transmission |
-
2020
- 2020-12-22 CN CN202011529919.1A patent/CN112648141B/en active Active
-
2021
- 2021-08-27 WO PCT/CN2021/114941 patent/WO2022134639A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150219068A1 (en) * | 2014-01-31 | 2015-08-06 | Ryan Port | Wind turbine having a plurality of airfoil rings and counter rotating generators |
WO2016010450A1 (en) * | 2014-07-16 | 2016-01-21 | Анатолий Георгиевич БАКАНОВ | Dual rotor wind power assembly (variants) |
DE102015102541A1 (en) * | 2015-02-23 | 2016-08-25 | Jugendforschungszentrum Schwarzwald-Schönbuch e. V. | Wind turbine and method for its regulation |
CN109751186A (en) * | 2017-11-02 | 2019-05-14 | 北京普华亿能风电技术有限公司 | The control method and high power wind-driven generator of wind-driven generator |
CN112648141A (en) * | 2020-12-22 | 2021-04-13 | 中国华能集团清洁能源技术研究院有限公司 | Tandem type double-wind-wheel wind turbine generator set cooperative control method |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115977888A (en) * | 2022-11-24 | 2023-04-18 | 若光若盐(南京)科技有限公司 | Double-wind-wheel double-speed-increasing-box wind generating set |
CN116292095A (en) * | 2023-03-27 | 2023-06-23 | 华北电力大学 | Multi-scene coordinated operation method of tandem double-wind-wheel wind turbine generator |
CN116292095B (en) * | 2023-03-27 | 2023-11-07 | 华北电力大学 | Multi-scene coordinated operation method of tandem double-wind-wheel wind turbine generator |
CN117108445A (en) * | 2023-07-25 | 2023-11-24 | 华北电力大学 | Digital twin simulation method for tandem double-wind-wheel wind turbine generator |
CN117108445B (en) * | 2023-07-25 | 2024-05-03 | 华北电力大学 | Digital twin simulation method for tandem double-wind-wheel wind turbine generator |
Also Published As
Publication number | Publication date |
---|---|
CN112648141B (en) | 2021-09-28 |
CN112648141A (en) | 2021-04-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2022134639A1 (en) | Method for conjunctively controlling wind turbine generator having tandem double-rotors | |
CN112664390B (en) | Four-level hierarchical control method for tandem type double-wind-wheel wind turbine generator | |
CN102072094A (en) | Wind driven generator with double wind wheels with power synthesis | |
CN102916446B (en) | Electric control system of asynchronous wind generating set | |
AU2010252496A1 (en) | Direct-connection low-speed small mixed-flow hydroturbine for hydrodynamic energy-saving cooling tower | |
CN112727788B (en) | Speed regulation method of energy recovery system of speed regulation type double four-quadrant frequency converter | |
CN103195651B (en) | A kind of wind-driven generator Optimal Control System based on PI adjustment and controlling method | |
CN104329281A (en) | Variable frequency energy-saving system for movable blade adjustable type induced draft fan | |
CN106150916A (en) | A kind of bilobed wheel synchro wind generator group | |
CN104901332A (en) | Low voltage ride through control system and control method based on variable pitch | |
CN102852726A (en) | Gird-connected wind power generation system with self-adaptive speed regulation composite transmission based on differential mechanism | |
CN109751186B (en) | Control method of wind driven generator and high-power wind driven generator | |
CN103470720B (en) | Low-speed-ratio hydraulic torque converter and guide blade regulating method | |
CN112879109B (en) | Energy recovery method of parallel-connection steam-electricity double-drive coaxial unit based on load distribution | |
CN105048496A (en) | Grid-connected control method of dual-motor wind generating set | |
CN107327368A (en) | A kind of all-hydraulic agitation nighttide mixed power generation equipment | |
CN204041129U (en) | Determine expansion ratio rock gas radial-inward-flow turbine expansion power generation unit | |
CN202732233U (en) | Variable-ratio wind generating set | |
CN105041575A (en) | Multi-motor power generation device and wind power generation unit | |
CN205618299U (en) | Double wind wheel aerogenerator with wind changes speed | |
CN207960694U (en) | A kind of motor-small turbine variable speed dual drive system | |
CN202718814U (en) | Direct grid wind turbine generating set of synchronous generator | |
CN109751180B (en) | Blade type selection method of double-impeller fan | |
WO2019206102A1 (en) | High-efficiency wind power generation apparatus | |
CN206246284U (en) | A kind of bilobed wheel synchro wind generator group |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21908643 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 21908643 Country of ref document: EP Kind code of ref document: A1 |