CN103133264B - Wind driven generator system based on flywheel energy storage speed adjustment - Google Patents
Wind driven generator system based on flywheel energy storage speed adjustment Download PDFInfo
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Abstract
本发明公开了一种基于飞轮储能调速的风力发电机系统,包括风叶、风轮轴心、飞轮、主轴和发电机;所述风叶固定在风轮轴心的一端,风轮轴心的另一端的端面上设有圆孔,圆孔的圆周内壁上设有棘齿,所述飞轮上设有棘轮,棘轮伸入圆孔内,棘轮上设有棘爪,棘爪与棘齿配合;所述飞轮、主轴、发电机依次固定同轴连接。本发明在风力强时,利用飞轮储存多余的风能;在风力弱时,释放飞轮储存的风能来驱动电机,同时,飞轮把电机的速度平稳在一定的范围内,杜绝了由于风力起伏而引起的发电机输出电能的波动,从而达到改善电能质量的目的。本发明是采用机械方式直接安装在风力发电机组上,属于机械能之间的转换,转换次数减少且损耗降低。
The invention discloses a wind power generator system based on flywheel energy storage and speed regulation, which includes wind blades, a wind wheel axis, a flywheel, a main shaft and a generator; the wind blades are fixed at one end of the wind wheel axis, and the other end A round hole is arranged on the end surface of one end, and a ratchet is arranged on the inner wall of the round hole. A ratchet is arranged on the flywheel, and the ratchet extends into the round hole. The flywheel, the main shaft and the generator are sequentially fixed and coaxially connected. In the present invention, when the wind force is strong, the flywheel is used to store excess wind energy; when the wind force is weak, the wind energy stored by the flywheel is released to drive the motor. The fluctuation of the output power of the generator, so as to achieve the purpose of improving the power quality. The invention is directly installed on the wind power generating set in a mechanical way, belongs to the conversion between mechanical energies, reduces the number of conversions and reduces the loss.
Description
技术领域technical field
本发明属于新能源发电及接入技术领域,涉及智能电网中的风力发电技术、新能源开发技术、以及风力发电并网技术,尤其涉及一种基于飞轮储能调速的风力发电机系统。The invention belongs to the field of new energy power generation and access technology, and relates to wind power generation technology in smart grids, new energy development technology, and wind power grid connection technology, in particular to a wind power generator system based on flywheel energy storage and speed regulation.
背景技术Background technique
风力发电在电力系统中所占的比重日益增加,由于风能具有随机性和间歇性的特点,风力发电对电力系统产生的电压波动、频率偏移、谐波污染等问题日益突出。此外,我国风力资源丰富的地区多分布于电网相对薄弱的中西部,大量风电机组的并网给现有电力系统的正常运行带来极大的挑战。The proportion of wind power generation in the power system is increasing day by day. Due to the random and intermittent nature of wind power, problems such as voltage fluctuations, frequency offsets, and harmonic pollution caused by wind power generation to the power system have become increasingly prominent. In addition, the regions rich in wind resources in my country are mostly distributed in the central and western regions where the power grid is relatively weak. The grid connection of a large number of wind turbines has brought great challenges to the normal operation of the existing power system.
发明内容Contents of the invention
本发明为解决上述技术问题,提供一种基于飞轮储能调速的风力发电机系统,它在风力发电系统中引入储能调速装置,能够有效减小风力发电对电网的冲击,保证电力系统运行的连续性和稳定性。In order to solve the above technical problems, the present invention provides a wind power generator system based on flywheel energy storage and speed regulation. It introduces an energy storage and speed regulation device into the wind power generation system, which can effectively reduce the impact of wind power generation on the power grid and ensure that the power system Continuity and stability of operation.
为了实现上述目的,本发明采用如下技术方案。In order to achieve the above object, the present invention adopts the following technical solutions.
一种基于飞轮储能调速的风力发电机系统,包括风叶、风轮轴心、飞轮、主轴和发电机;所述风叶固定在风轮轴心的一端,风轮轴心的另一端的端面上设有圆孔,圆孔的圆周内壁上设有棘齿,所述飞轮上设有棘轮,棘轮伸入圆孔内,棘轮上设有棘爪,棘爪与棘齿配合;所述飞轮、主轴、发电机依次固定同轴连接。A wind power generator system based on flywheel energy storage and speed regulation, including wind blades, a wind wheel shaft, a flywheel, a main shaft and a generator; the wind blades are fixed on one end of the wind wheel shaft, and the other end of the wind wheel shaft There is a round hole, the inner wall of the round hole is provided with a ratchet, the flywheel is provided with a ratchet, the ratchet extends into the round hole, the ratchet is provided with a pawl, and the pawl cooperates with the ratchet; the flywheel, the main shaft , and the generator are fixedly connected coaxially in sequence.
所述基于飞轮储能调速的风力发电机系统还包括风轮轴心支撑轴承和机组外壳,风轮轴心支撑轴承把风轮轴心支撑在机组外壳上。The wind power generator system based on flywheel energy storage and speed regulation also includes a wind rotor shaft support bearing and a unit casing, and the wind rotor shaft support bearing supports the wind rotor shaft on the unit casing.
所述基于飞轮储能调速的风力发电机系统还包括主轴第一支撑轴承和主轴第二支撑轴承,主轴第一支撑轴承和主轴第二支撑轴承分别将主轴支撑在风轮轴心内壁上和机组外壳的内壁上。The wind power generator system based on flywheel energy storage speed regulation also includes a first support bearing of the main shaft and a second support bearing of the main shaft, the first support bearing of the main shaft and the second support bearing of the main shaft respectively support the main shaft on the inner wall of the wind wheel shaft and on the inner wall of the enclosure.
所述基于飞轮储能调速的风力发电机系统还包括塔架,塔架将整个风力发电机组支撑于空中。The wind power generator system based on flywheel energy storage and speed regulation also includes a tower, and the tower supports the whole wind power generator set in the air.
本发明该棘轮分为三层,最外层与风轮轴心相连,中间层与飞轮的轴心相连,最内层与主轴相连,最外层内壁为棘齿,中间层上安装有两个棘爪,嵌入最外的棘齿,中间层和最内层为刚性连接。当风轮高速转动时,最外层通过棘爪带动飞轮以及主轴一起高速转动;当风轮转速过低时,则对飞轮和发电机没有影响,此时飞轮驱动电机转动。The ratchet wheel of the present invention is divided into three layers, the outermost layer is connected to the axis of the wind wheel, the middle layer is connected to the axis of the flywheel, the innermost layer is connected to the main shaft, the inner wall of the outermost layer is a ratchet, and two ratchets are installed on the middle layer. The pawl is embedded in the outermost ratchet, and the middle layer and the innermost layer are rigidly connected. When the wind wheel rotates at high speed, the outermost layer drives the flywheel and the main shaft to rotate at high speed through the pawl; when the speed of the wind wheel is too low, it has no effect on the flywheel and generator, and the flywheel drives the motor to rotate.
本发明将飞轮和风轮以及发电机的转子通过棘轮连接起来,当风轮高速转动的时候,驱动电机发电,同时驱动飞轮转动将多余的风能转化为飞轮的机械能以达到储能的目的;当风轮转速过低时,则对飞轮和发电机没有影响,此时飞轮驱动电机转动,同时可以对电机进行调速。The invention connects the flywheel, the wind wheel and the rotor of the generator through a ratchet. When the wind wheel rotates at a high speed, the motor is driven to generate electricity, and at the same time, the flywheel is driven to convert excess wind energy into the mechanical energy of the flywheel to achieve the purpose of energy storage; When the rotation speed of the wheel is too low, there is no influence on the flywheel and the generator. At this moment, the flywheel drives the motor to rotate, and the motor can be regulated simultaneously.
本发明区别于传统的通过电力电子器件与风力发电机组相连的方式,本发明采用机械方式直接安装在风力发电机组上,属于机械能之间的转换,转换次数减少且损耗降低。The present invention is different from the traditional method of connecting the wind power generating set through the power electronic device. The present invention is directly installed on the wind power generating set in a mechanical way, belongs to the conversion between mechanical energy, and reduces the conversion times and losses.
本发明的有益效果:风力发电系统中采用飞轮蓄能调速,即风力发电机的风叶在风力驱动下旋转时带动适当转动惯量的飞轮运动,当风力强时,风叶驱动飞轮加速,并以动能的形式将一部分能量储存在飞轮中;当风力弱时,储存在飞轮中的动能仍可驱动风力发电机发电。利用惯性原理通过适当质量的飞轮储能,可在一定范围内自动稳定风力发电机的转速,以平抑由于风力起伏而引起的发电机输出电能的波动,改善电能的质量。本发明是采用机械方式直接安装在风力发电机组上,属于机械能之间的转换,转换次数减少且损耗降低。The beneficial effects of the present invention: the wind power generation system adopts the flywheel energy storage speed regulation, that is, the wind blade of the wind generator drives the flywheel with an appropriate moment of inertia when it rotates under the wind force, and when the wind is strong, the wind blade drives the flywheel to accelerate, and Part of the energy is stored in the flywheel in the form of kinetic energy; when the wind is weak, the kinetic energy stored in the flywheel can still drive the wind turbine to generate electricity. Using the principle of inertia to store energy through a flywheel of appropriate quality, the speed of the wind turbine can be automatically stabilized within a certain range, so as to stabilize the fluctuation of the generator's output power caused by wind fluctuations and improve the quality of power. The invention is directly installed on the wind power generating set in a mechanical way, belongs to the conversion between mechanical energies, reduces the number of conversions and reduces the loss.
附图说明Description of drawings
图1是本发明的结构示意图。Fig. 1 is a schematic structural view of the present invention.
图2是飞轮剖面图。Figure 2 is a sectional view of the flywheel.
其中,1-风叶;2-主轴第一支撑轴承;3-飞轮;4-主轴第二支撑轴承;5-机组外壳;6-发电机;7-主轴;8-塔架;9-棘轮;10-风轮轴心支撑轴承;11-风轮轴心;12-棘爪。Among them, 1-fan blade; 2-the first supporting bearing of the main shaft; 3-flywheel; 4-the second supporting bearing of the main shaft; 5-unit casing; 6-generator; 7-main shaft; 8-tower; 10-wind wheel shaft support bearing; 11-wind wheel shaft; 12-pawl.
具体实施方式Detailed ways
下面结合附图与实施例对本发明作进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
一种基于飞轮储能调速的风力发电机系统,包括风叶1、主轴第一支撑轴承2、飞轮3、主轴第二支撑轴承4、机组外壳5、发电机6、主轴7、塔架8、棘轮9、风轮轴心支撑轴承10、风轮轴心11、棘爪12。A wind power generator system based on flywheel energy storage and speed regulation, including wind blade 1, first main shaft support bearing 2, flywheel 3, main main shaft second support bearing 4, unit casing 5, generator 6, main shaft 7, tower 8 , ratchet 9, wind wheel axis support bearing 10, wind wheel axis 11, ratchet 12.
如图1所示,所述风叶1固定在风轮轴心11的一端,风轮轴心11的另一端的端面上设有圆孔,所述飞轮3上设有棘轮9,棘轮9伸入圆孔内,所述飞轮3、主轴7、发电机6依次固定同轴连接。风轮轴心11、飞轮3以及主轴7通过棘轮9连接在一起。风轮轴心支撑轴承10把风轮轴心11支撑在机组外壳5上。主轴有两个支撑轴承:主轴第一支撑轴承2和主轴第二支撑轴承4,分别将其支撑在风轮轴心11内壁上和机组外壳5的内壁上。塔架8将整个风力发电机组支撑于空中。As shown in Figure 1, the wind blade 1 is fixed on one end of the wind wheel shaft 11, and the other end of the wind wheel shaft 11 is provided with a round hole, and the flywheel 3 is provided with a ratchet 9, and the ratchet 9 extends into the circle. In the hole, the flywheel 3, the main shaft 7, and the generator 6 are sequentially fixed and coaxially connected. Wind wheel axis 11, flywheel 3 and main shaft 7 are connected together by ratchet 9. The wind wheel shaft support bearing 10 supports the wind wheel shaft 11 on the unit casing 5 . The main shaft has two supporting bearings: the first supporting bearing 2 of the main shaft and the second supporting bearing 4 of the main shaft, which are respectively supported on the inner wall of the wind wheel axis 11 and the inner wall of the unit casing 5 . The tower 8 supports the whole wind power generating set in the air.
如图2所示,最外层是风轮轴心11,中间层是飞轮3,最内层是主轴7,飞轮3的棘轮9上装有两个棘爪12。所述风轮轴心11的圆孔的圆周内壁上设有棘齿,所述棘爪12与棘齿配合。As shown in Figure 2, the outermost layer is the wind wheel axis 11, the middle layer is the flywheel 3, the innermost layer is the main shaft 7, and two ratchets 12 are housed on the ratchet 9 of the flywheel 3. A ratchet is provided on the circumferential inner wall of the circular hole of the shaft center 11 of the wind wheel, and the ratchet 12 cooperates with the ratchet.
当风轮高速转动的时候,风轮轴心11将通过棘爪12带动飞轮3和主轴7(与发电机6转子相连)一起转动,此时飞轮3处于储能的状态;当风轮低速转动的时候,风轮轴心11对飞轮3和主轴7没有影响,此时飞轮3驱动主轴7转动,飞轮3处于释放能量的状态,并控制主轴7(发电机6的转子)的速度,使其稳定在一定范围内,不发生突变。When the wind wheel rotates at high speed, the wind wheel axis 11 will drive the flywheel 3 and the main shaft 7 (connected with the generator 6 rotor) to rotate together through the pawl 12, and the flywheel 3 is in the state of energy storage at this time; when the wind wheel rotates at a low speed At this time, the axis 11 of the wind wheel has no influence on the flywheel 3 and the main shaft 7. At this time, the flywheel 3 drives the main shaft 7 to rotate, and the flywheel 3 is in the state of releasing energy, and controls the speed of the main shaft 7 (the rotor of the generator 6) to stabilize it at Within a certain range, no mutation occurs.
上述虽然结合附图对本发明的具体实施方式进行了描述,但并非对本发明保护范围的限制,所属领域技术人员应该明白,在本发明的技术方案的基础上,本领域技术人员不需要付出创造性劳动即可做出的各种修改或变形仍在本发明的保护范围以内。Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.
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CN103423096B (en) * | 2013-07-24 | 2015-11-25 | 中国大唐集团科学技术研究院有限公司 | With the wind power generating set of accumulated energy flywheel |
CN103452767A (en) * | 2013-09-13 | 2013-12-18 | 张东升 | Wind generating set |
CN106050568A (en) * | 2016-06-07 | 2016-10-26 | 国网山东省电力公司枣庄供电公司 | Wind power generating system |
CN106891090A (en) * | 2017-04-12 | 2017-06-27 | 西北工业大学 | Energy storage vibrating mechanism |
KR102037181B1 (en) * | 2017-09-26 | 2019-10-29 | 농업회사법인 한국도시농업 주식회사 | Power generation system using wind power generated by weak wind |
CN118110635B (en) * | 2024-04-12 | 2024-09-03 | 主力能源(北京)有限公司 | Transmission mechanism for wind power gear box |
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