阅读说明：本技术 风力发电机组 (Wind generating set ) 是由 翟永 李会勋 周海霞 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种风力发电机组,包括主风机,还包括辅助发电设备、蓄电池组和逆变器,所述辅助发电设备包括辅助风机；所述蓄电池组用于存储所述辅助风机的发电量；所述逆变器用于将所述蓄电池组存储的电量转换为供所述主风机的自用电设备使用的电量；所述逆变器还用于将所述蓄电池组中供所述主风机自用电设备使用后剩余的电量传递至主风机并网电路。该风力发电机组通过在主风机上设置额外的辅助发电设备,该辅助发电设备的发电用于满足主风机的自身用电需求,能够降低主风机启动风速,扩大机组的风速可利用区间,提高风能利用率。(The invention discloses a wind generating set, which comprises a main fan, auxiliary generating equipment, a storage battery pack and an inverter, wherein the auxiliary generating equipment comprises an auxiliary fan; the storage battery pack is used for storing the generated energy of the auxiliary fan; the inverter is used for converting the electric quantity stored by the storage battery pack into electric quantity used by self-powered equipment of the main fan; the inverter is also used for transmitting the residual electric quantity in the storage battery pack after the main fan self-powered equipment is used to the main fan grid-connected circuit. This wind generating set is through setting up extra auxiliary power generation equipment on main fan, and this auxiliary power generation equipment's electricity generation is used for satisfying main fan's self power consumption demand, can reduce main fan start-up wind speed, enlarges the usable interval of wind speed of unit, improves wind energy utilization.)

1. A wind power plant comprising a main wind turbine (10), characterized by further comprising an auxiliary power plant comprising an auxiliary wind turbine (20), a battery (50) and an inverter (60); the storage battery pack (50) is used for storing the power generation amount of the auxiliary fan (20); the inverter (60) is used for converting the electric quantity stored by the storage battery pack (50) into the electric quantity used by self-powered equipment (13) of the main fan (10); the inverter (60) is also used for transmitting the residual electric quantity of the storage battery pack (50) after the storage battery pack is used by the self-powered equipment (13) of the main fan (10) to a main fan grid-connected circuit (14).

2. Wind park according to claim 1, wherein the auxiliary wind turbine (20) is more than one and at least one of the auxiliary wind turbines (20) is arranged in a horizontal axis.

3. A wind park according to claim 2, further comprising a detection device mounted to one of the horizontal axis auxiliary blowers (20a) for obtaining a mechanical signal corresponding to the current wind parameter information.

4. A wind power plant according to claim 3, wherein a conversion relationship between the mechanical signal and a wind parameter signal of the horizontal axis auxiliary fan (20a) is pre-stored in a controller (12) of the main fan (10), the controller (12) is in communication connection with the detection device, and is capable of acquiring the mechanical signal transmitted by the detection device, the controller (12) is further capable of determining a corresponding wind parameter signal according to the received mechanical signal and the pre-stored conversion relationship, and sending a pitch control signal and a yaw control signal to the main fan (10) according to the determined wind parameter signal.

5. Wind park according to claim 3 or 4, wherein no wind vane or anemometer is provided on the main wind turbine (10).

6. Wind park according to claim 2, wherein the auxiliary fan (20) is arranged on top of the main fan (10).

7. Wind park according to any of claims 1-6, wherein the auxiliary power unit comprises a control module (40), the power generated by the auxiliary power unit being transmitted to the control module (40) via an electric circuit, the control module (40) being adapted to control the charging and discharging of the battery pack (50).

8. Wind park according to claim 7, wherein the auxiliary power plant further comprises one or more solar panels (30), the solar panels (30) being adapted to convert solar energy into electrical energy and to transmit it to the control module (40).

9. Wind park according to claim 8, wherein the main wind turbine (10) comprises a nacelle, the top of which is provided with a protective cover, the solar panel (30) being provided above the protective cover.

10. Wind park according to claim 8, wherein the solar panel (30) is arranged on a tower of the main wind turbine (10), or on a nacelle of the main wind turbine (10), or on a blade of the main wind turbine (10).

Technical Field

The invention relates to the technical field of wind power generation, in particular to a wind generating set.

Background

The wind generating set also needs the power consumption to supply the work of each electrical apparatus part of unit self when the electricity generation, and the power consumption of unit self includes the power consumption of the change oar motor, yaw motor power consumption, heat dissipation motor power consumption, illumination power consumption and all kinds of electric control cabinet body work power consumption etc. and the increase of random group capacity, the unit is from the power consumption and continuously increases.

The existing wind generating set mainly has two ways of generating power by the set, wherein one way is obtained from a power grid, and the other way is obtained from the self-generating power of the set; in the periods of shutdown, initial startup and the like of the unit, if the electric quantity generated by the unit is not enough to meet the self-utilization of the unit, the electric quantity still needs to be obtained from a power grid.

Therefore, the online electric quantity of the wind generating set is the electric quantity generated by the set in theory minus the self electric quantity of the set, namely the online electric quantity of the set is smaller than the theoretical generated energy of the set; therefore, only when the external wind speed is high, the theoretical generating capacity of the unit is larger than the power consumption of the unit, the unit can be started, the starting wind speed of the fan is high, the available wind speed interval is narrow, and the on-line power of the unit is small.

In addition, during the hoisting and debugging of the fan, power needs to be purchased from the power grid for debugging of each component, and the construction cost of the wind turbine generator is increased.

In view of this, how to improve the existing wind turbine generator system to reduce the starting wind speed of the wind turbine and expand the available wind speed range of the wind turbine is a technical problem that needs to be solved by those skilled in the art at present.

Disclosure of Invention

The invention aims to provide a wind generating set, which is characterized in that an additional auxiliary generating device is arranged on a main fan, the power generation of the auxiliary generating device is used for meeting the self power consumption requirement of the main fan, the starting wind speed of the main fan can be reduced, the wind speed available interval of the set is expanded, and the wind energy utilization rate is improved.

In order to solve the technical problem, the invention provides a wind generating set, which comprises a main fan, auxiliary generating equipment, a storage battery pack and an inverter, wherein the auxiliary generating equipment comprises an auxiliary fan; the storage battery pack is used for storing the generated energy of the auxiliary fan; the inverter is used for converting the electric quantity stored by the storage battery pack into electric quantity used by self-powered equipment of the main fan; the inverter is also used for transmitting the residual electric quantity in the storage battery pack after the main fan self-powered equipment is used to the main fan grid-connected circuit.

The wind generating set is provided with additional auxiliary generating equipment independent of the main fan, the auxiliary generating equipment comprises an auxiliary fan, the electric quantity generated by the auxiliary fan can be stored in a storage battery pack and converted into the electric quantity used by the self-powered equipment of the main fan through an inverter, and if the generated energy of the auxiliary generating equipment is still residual electric quantity after being used by the self-powered equipment of the main fan, the residual electric quantity can also be converted by the inverter and then transmitted to a main fan grid-connected circuit to become the grid-connected electric quantity; therefore, the wind generating set can reduce or even not use electric quantity from a power grid, and the generated energy of the main fan does not need to be supplied to the self-powered equipment, so that the starting wind speed of the main fan is reduced, the available interval of the wind speed of the set is enlarged, more on-line electric quantity can be obtained, and greater benefits are generated.

According to the wind generating set, the number of the auxiliary fans is more than one, and at least one auxiliary fan is arranged in a horizontal shaft manner.

The wind generating set further comprises a detection device, wherein the detection device is installed on a horizontal axis type auxiliary fan and used for acquiring a mechanical signal corresponding to the current wind parameter information.

According to the wind generating set, the conversion relation between the mechanical signal and the wind parameter signal of the horizontal axis type auxiliary fan is prestored in the controller of the main fan, the controller is in communication connection with the detection equipment and can acquire the mechanical signal transmitted by the detection equipment, and the controller can also determine the corresponding wind parameter signal according to the received mechanical signal and the prestored conversion relation and send the pitch control signal and the yaw control signal to the main fan according to the determined wind parameter signal.

According to the wind generating set, the main fan is not provided with a wind vane and an anemoscope.

According to the wind generating set, the auxiliary fan is arranged at the top of the main fan.

According to the wind generating set, the auxiliary power generation equipment comprises a control module, electric quantity generated by the auxiliary power generation equipment is transmitted to the control module through a circuit, and the control module is used for controlling charging and discharging of the storage battery pack.

The wind generating set as described above, the auxiliary power generating equipment further includes one or more solar panels, and the solar panels are used for converting solar energy into electric energy and transmitting the electric energy to the control module.

According to the wind generating set, the main fan comprises the engine room, the top of the engine room is provided with the protective cover, and the solar panel is arranged above the protective cover.

According to the wind generating set, the solar panel is arranged on the tower of the main fan, or the air guide sleeve of the main fan, or the blade of the main fan.

Drawings

FIG. 1 is a schematic view of a first embodiment of a wind turbine generator according to the present invention;

FIG. 2 is a simplified structural diagram of a main fan of the wind turbine generator system shown in FIG. 1 in a non-wind-facing position;

FIG. 3 is a simplified structural diagram of a main fan of the wind turbine generator system shown in FIG. 1 after the main fan utilizes an auxiliary fan to face wind;

FIG. 4 is a functional block diagram of a control system for an auxiliary power unit of the wind turbine generator set of FIG. 1;

FIG. 5 is a simplified structural diagram of a wind turbine generator system according to a second embodiment of the present invention;

FIG. 6 is a top view of the wind turbine generator set shown in FIG. 5;

FIG. 7 is a functional block diagram of a control system for the auxiliary power generation equipment of the wind turbine generator set of FIG. 5;

fig. 8 is a schematic structural diagram of a wind turbine generator system according to a third embodiment of the present invention.

Description of reference numerals:

the system comprises a main fan 10, a cabin 11, a controller 12, self-powered equipment 13, a variable pitch motor 131, a yaw motor 132 and a main fan grid-connected circuit 14;

the system comprises an auxiliary fan 20, a horizontal axis type auxiliary fan 20a, a solar panel 30, a control module 40, a storage battery pack 50 and an inverter 60.

Detailed Description

The wind generating set provided by the invention is provided with auxiliary generating equipment independent of the main fan on the basis of the main fan, the electric quantity generated by the auxiliary generating equipment is stored by the storage battery pack, the storage battery pack converts the generated energy of the auxiliary generating equipment into the electric quantity used by the self-powered equipment of the main fan through the inverter, and the inverter is also used for transmitting the residual electric quantity in the storage battery pack except the electric quantity used by the self-powered equipment of the main fan to a grid-connected circuit of the main fan.

Therefore, the wind generating set provided by the invention can supply the electricity of the self-electricity utilization equipment of the main fan by utilizing the auxiliary electricity generation equipment independent of the main fan, so that the wind generating set can reduce or even not use the electricity from a power grid, and the electricity generation amount of the main fan is not required to be supplied to the self-electricity utilization equipment, thus the starting wind speed of the main fan is reduced, the available wind speed interval of the set is enlarged, more on-grid electricity can be obtained, and greater benefits are generated.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a wind turbine generator system according to a first embodiment of the present invention; FIG. 2 is a simplified structural diagram of a main fan of the wind turbine generator system shown in FIG. 1 in a non-wind-facing position; FIG. 3 is a simplified structural diagram of a main fan of the wind turbine generator system shown in FIG. 1 after the main fan utilizes an auxiliary fan to face wind; fig. 4 is a functional block diagram of a control system for an auxiliary power generating device of the wind turbine generator set of fig. 1.

In this embodiment, the auxiliary power generating equipment of the wind generating set includes the auxiliary wind turbine 20, and the number of the auxiliary wind turbine 20 may be one or two or more according to specific requirements, which is only schematically illustrated in the figure.

The wind generating set further comprises a control module 40, a storage battery pack 50 and an inverter 60, wherein electric quantity generated by the auxiliary fan 20 is transmitted to the control module 40 through a circuit, the control module 40 is used for controlling charging and discharging of the storage battery pack 50, when the main fan 10 needs to use electricity, the electric quantity stored in the storage battery pack 50 is converted into electric quantity which can be used by the self-electricity-using equipment 13 of the main fan 10 through the inverter 60, specifically, when the electric quantity stored in the storage battery pack 50 has residue besides the power supply requirement of the self-electricity-using equipment 13, the inverter 60 can transmit the residual electric quantity to the main fan grid-connected circuit 14, so as to improve the grid-connected electric quantity of the wind generating set.

In addition, during the debugging of the wind turbine generator set, the electric quantity stored in the storage battery pack 50 can be used for debugging all components of the set, the requirement for purchasing the electric quantity from a power grid can be further reduced, and therefore the construction cost of the wind turbine generator set is reduced.

The self-powered device 13 of the main fan 10 includes a pitch motor 131, a yaw motor 132, a heat dissipation motor, a lighting device, various electric control cabinets, and the like.

In a specific scheme, the auxiliary fan 20 is arranged on the top of the main fan 10, and in particular, can be arranged on the top of the cabin 11 of the main fan 10, so as to facilitate the utilization of wind energy; of course, in practical application, the air flow direction can be measured and calculated to be placed at other positions of the unit, such as the side surface of the unit in a suspending way.

Specifically, at least one of the auxiliary blowers 20 is arranged in a horizontal axis type. In the embodiment shown in the drawings herein, all of the auxiliary blowers 20 are arranged in a horizontal axis.

In a preferred embodiment, one of the horizontal axis auxiliary fans 20a is provided with a detection device for acquiring a mechanical signal corresponding to the current wind parameter information. In this way, the detection device of the horizontal axis auxiliary fan 20a may be communicatively connected to the controller 12 of the main fan 10, so that the controller 12 may obtain wind parameter information through the horizontal axis auxiliary fan 20a, and thereby control the pitch and yaw motions of the main fan 10, so that the main fan 10 may be located at a position for capturing wind energy at a maximum.

Specifically, the controller 12 prestores a conversion relationship between a mechanical signal of the horizontal axis auxiliary fan 20a and a wind parameter signal in advance, in actual operation, a detection device of the horizontal axis auxiliary fan 20a can detect the mechanical signal of the horizontal axis auxiliary fan 20a related to wind parameter information and transmit the detected mechanical signal to the controller 12, and the controller 12 can obtain a corresponding wind parameter signal according to the received mechanical signal and the prestore conversion relationship, and send a pitch control signal to the pitch motor 131 of the main fan 10 and a yaw control signal to the yaw motor 132 of the main fan according to the corresponding wind parameter signal to control pitch and yaw actions of the main fan 10. The wind parameter information comprises wind direction and wind speed.

Referring to fig. 2 and 3, an arrow in fig. 2 indicates a wind direction, and it can be seen from the figure that, in the illustration, an included angle between a main fan 10 of the wind turbine generator system and the wind direction is a, the main fan 10 is not in an optimal position for capturing wind energy, a mechanical signal of a horizontal axis type auxiliary fan 20a can be processed by a controller 12 and then sends a pitch control signal and a yaw control signal to the main fan 10, and the main fan 10 makes the main fan 10 in a position for capturing the maximum wind energy, i.e., the position shown in fig. 3, by a pitch and yaw action after receiving the signal.

Specifically, the conversion relationship pre-stored in the controller 12 may be determined by calibrating a calibration device when the fan is hoisted and debugged. The calibration device may specifically be a laser radar or others, and in the same environment, the calibration device detects a wind parameter signal indicating a wind speed and a wind direction, and the detection device of the horizontal axis auxiliary fan 20a detects a mechanical signal indicating a rotation speed and a direction, so that a conversion relationship between the mechanical signal of the horizontal axis auxiliary fan 20a and the wind parameter signal can be established.

It should be noted that, under the condition that the wind turbine generator system is provided with the plurality of auxiliary fans 20 and the plurality of auxiliary fans 20 are all arranged in a horizontal manner, only one auxiliary fan 20 may be selected for calibration, and in actual operation, the detection device of the calibrated auxiliary fan 20 is in communication connection with the controller 12; in actual operation, detection devices of the auxiliary fans 20 can be in communication connection with the controller 12, conversion relations between multiple groups of mechanical signals and wind parameter signals can be prestored in the controller 12, the controller 12 can obtain multiple groups of corresponding wind parameter signals according to the corresponding conversion relations after acquiring the mechanical signals of the auxiliary fans 20, and correspondingly process the multiple groups of wind parameter signals, for example, after averaging processing, pitch control signals and yaw control signals are sent out according to the finally determined wind parameter signals.

On the basis that at least one auxiliary fan 20 is set to be of a horizontal axis type, one of the horizontal axis type auxiliary fans 20a is provided with a detection device, and the communication relation is established with the controller 12 of the main fan 10, an anemoscope and an anemoscope are not arranged on the main fan 10, that is, wind parameter information can be obtained through the cooperation of the horizontal axis type auxiliary fan 20a and the controller 12, and the anemoscope are not required to be arranged.

However, it is understood that in practical applications, an anemometer and a wind vane may be disposed on the main fan 10, and the pitching action and the yawing action of the main fan 10 are still determined according to the wind direction information obtained by the wind vane and the wind speed information obtained by the anemometer.

Referring to fig. 5 to 7, fig. 5 is a schematic structural diagram of a wind turbine generator system according to a second embodiment of the present invention; FIG. 6 is a top view of the wind turbine generator set shown in FIG. 5; fig. 7 is a functional block diagram of a control system of a power plant of the wind turbine generator set of fig. 5.

In this embodiment, the power generating equipment of the wind turbine generator system includes an auxiliary fan 20 and a plurality of solar panels 30.

The specific arrangement position of the auxiliary fan 20, the relationship with the controller 12 of the main fan 10, and the like may be arranged in reference to the above-described embodiment, and will not be repeated here.

In this embodiment, the auxiliary power generating device is provided with a solar panel 30 besides the auxiliary fan 20, and the solar panel 30 can convert solar energy into electric energy, transmit the electric energy to the control module 40, and store, convert and supply the electric energy through the storage battery 50 and the inverter 60.

The auxiliary fan 20 and the solar panel 30 are combined, electric quantity generated by the auxiliary fan and the solar panel is firstly supplied to the self-powered equipment 13 of the main fan 10, and if the electric quantity is remained, the electric quantity is transmitted to the main fan grid-connected circuit 14, so that the grid-connected electric quantity of the wind generating set can be further increased.

It should be noted that, because the top of the nacelle 11 of the main blower 10 is a space without any shielding, it is preferable to dispose the solar panel 30 on the top of the nacelle 11 of the main blower 10, specifically, the top of the nacelle 11 is disposed with a protective cover, and the solar panel 30 is specifically disposed above the protective cover, so that the available time of illumination can be increased, and the power generation amount of the solar panel 30 can be increased; simultaneously, because of the structure of current protection casing mostly is a plurality of glass steel sheet bodies as an organic whole through sealed gluey bonding, so set up solar cell panel 30 back in the top of protection casing, solar cell panel 30 still plays the effect of sheltering from the protection casing, can avoid sealed gluey insolate or drench with rain, the life-span of sealed glue of extension reduces sealed inefficacy risk.

As shown in fig. 6, in the specific setting, the rest space of the top of the nacelle 11 except the auxiliary fan 20 is covered by the solar panels 30, and the number and arrangement of the solar panels 30 can be determined as required.

In practical applications, the solar panel 30 may be disposed at other positions besides the top of the nacelle 11 of the main wind turbine 10, such as a tower of the main wind turbine 10, or a nacelle of the main wind turbine 10, or a blade of the main wind turbine 10.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a wind turbine generator system according to a third embodiment of the present invention.

In this embodiment, the auxiliary power generating equipment of the wind turbine generator set includes a plurality of auxiliary fans 20 and a plurality of solar panels 30. The figure shows an exemplary configuration of five auxiliary blowers 20.

In this embodiment, the specific arrangement of the auxiliary blower 20 and the solar panel 30 and the connection relationship with the related components can be referred to the foregoing embodiments, and will not be repeated here.

In addition to the above embodiments, in other embodiments, the power generation equipment of the wind turbine generator set may be only provided with the solar panel 30, in this case, a wind vane and an anemoscope need to be arranged on the main fan 10, so that the controller 12 of the main fan 10 can output a pitch control signal according to a wind direction signal measured by the wind vane to control the pitch operation of the main fan 10, and output a yaw control signal according to a wind speed signal measured by the anemoscope to control the yaw operation of the main fan 10, so that the main fan is located at a position for capturing maximum wind energy.

The auxiliary power generation device may be other devices capable of generating power in addition to the solar panel 30 and/or the auxiliary fan 20.

The wind turbine generator system provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.