CN113586333A - Manual operation control box and manual operation control method for wind power pitch control system - Google Patents
Manual operation control box and manual operation control method for wind power pitch control system Download PDFInfo
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- CN113586333A CN113586333A CN202110945732.8A CN202110945732A CN113586333A CN 113586333 A CN113586333 A CN 113586333A CN 202110945732 A CN202110945732 A CN 202110945732A CN 113586333 A CN113586333 A CN 113586333A
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- 238000000034 method Methods 0.000 title abstract description 9
- 230000005611 electricity Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000011835 investigation Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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- 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
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- 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
Abstract
The invention discloses a manual control box of a wind power pitch control system and the wind power pitch control system, wherein the manual control box comprises: the wind power pitch control system comprises a box body, and an enabling control assembly, a steering control assembly and a rotating speed control assembly which are respectively and electrically connected with a pitch control cabinet of the wind power pitch control system. The enabling control assembly, the steering control assembly and the rotating speed control assembly are all arranged on the surface of the box body; the enabling control assembly sends enabling control signals to the variable pitch control cabinet according to the first external control instruction; the steering control assembly sends a steering control signal to the variable pitch control cabinet according to the second external control instruction; and the rotating speed control assembly sends a steering control signal to the variable pitch control cabinet according to a third external control instruction. Through the rotating speed control assembly, the rotating speed control of the blade in the blade opening and closing processes is realized, the defects that the existing manual control box only can realize the functions of closing and opening the blades, is simple and cannot meet the requirements are overcome, and the adaptability of the wind power blade closing system to various service environments is improved.
Description
Technical Field
The invention relates to the technical field of wind power equipment control, in particular to a manual operation control box of a wind power pitch control system and the wind power pitch control system.
Background
The invention belongs to the technical field of wind power pitch control, and provides a set of solution for the problems that the rotating speed of a blade cannot be controlled and the state of a system cannot be indicated when a box is operated by a hand of a wind power pitch control system. The large horizontal-axis wind turbine generator system is generally provided with three blades (also called blades), and each blade is provided with an independent variable pitch system (mainly composed of a variable pitch driver, a variable pitch motor, a transmission gear ring, a backup power supply and the like). Under normal conditions, the variable pitch driver controls the variable pitch motor to rotate in the forward direction or the reverse direction according to a control instruction (through a Canopen communication mode and the like) issued by the main control system of the fan, and the variable pitch motor further drives the blades to rotate in the pitch retracting direction (90 degrees direction) or the pitch opening direction (0 degrees direction) through the transmission gear ring.
When the wind turbine generator is in a maintenance or overhaul state, on-site operation and maintenance personnel sometimes need to control the blade pitch angle in a manual operation mode, at the moment, the variable pitch driver does not control the motion state of the variable pitch motor according to a control instruction issued by the main control system, but controls the motion state of the variable pitch motor according to a control button of a manual operation box (which needs to be connected with a variable pitch cabinet) in the hands of the operation and maintenance personnel.
As shown in fig. 1, a manual control box (hereinafter referred to as a manual control box) of a pitch system mainly comprises a box body and a cable. The box body of the manual operation box is provided with a total of two control buttons S1 and S2, and the blades can be respectively controlled to move towards the two directions of oar collection and oar opening after being pressed down in sequence. The manual operation box cable is a 4-core cable, one end of the cable is directly connected with the box body of the manual operation box, and the other end of the cable is provided with a plug-in terminal which can be directly inserted into a corresponding wiring terminal of the variable pitch control cabinet.
When the manual operation box is correctly connected to the variable pitch control cabinet, a signal line (i) in the manual operation box cable is responsible for transmitting the 24V level output by the variable pitch control cabinet to the manual operation box body, and then the 24V level is transmitted back to the variable pitch control cabinet through the signal line (ii) after the signal line (i) is short-circuited in the manual operation box body to be switched into the DI 1. When the DI1 of the variable pitch control cabinet detects the rising edge of the 24V level, the variable pitch system can automatically reset once, if the fault resetting is successful, the variable pitch system automatically switches into a manual operation control state (if the variable pitch system has no fault, the variable pitch system directly switches into the manual operation control state). When the hand-operated box button S1 is pressed, the signal line c is closed, 24V is transmitted to the 24V opening DI2 of the variable pitch control cabinet, and the hand-operated pitch control is started when the variable pitch control cabinet detects that DI2 is at a high level. And when the signal line (r) is closed after S2 is pressed, 24V is transmitted to the variable pitch control cabinet, 24V is opened into DI3, and when the variable pitch control cabinet detects that DI3 is at a high level, hand-operated paddle opening control is started.
The technical scheme has the following problems: firstly, when the manual operation control is carried out by the aid of a manual operation box, the prior art only considers the control of the rotation direction (the paddle opening direction and the paddle retracting direction) of the blades and does not consider the control of the rotation speed of the blades, and the blades can only move at a certain preset fixed rotation speed (such as 800 RPM). Under certain manual operation application occasions needing to reduce or improve the rotating speed of the blades, the prior art scheme can not meet the application requirements; secondly, after the manual operation box is connected, the real-time working state of a variable pitch system in the manual operation process cannot be indicated due to the fact that no indicating lamp is arranged on the panel of the conventional manual operation box, and problem troubleshooting under abnormal conditions is inconvenient.
Disclosure of Invention
The embodiment of the invention aims to provide a manual control box of a wind power pitch control system and the wind power pitch control system, which realize the rotation speed control of the blade in the blade opening and blade retracting processes through a rotation speed control assembly, overcome the defect that the conventional manual control box only can realize the simple functions of blade retracting and blade opening, meet the use requirement of the blade on reducing or improving the rotation speed of the blade in blade retracting, and improve the adaptability of the wind power pitch control system to various use environments.
In order to solve the technical problem, a first aspect of the embodiments of the present invention provides a manual control box for a wind turbine pitch control system, including: the wind power variable pitch system comprises a box body, and an enabling control assembly, a steering control assembly and a rotating speed control assembly which are respectively and electrically connected with a variable pitch control cabinet of the wind power variable pitch system;
the enabling control assembly, the steering control assembly and the rotating speed control assembly are all arranged on the surface of the box body;
the enabling control assembly sends an enabling control signal to the variable-pitch control cabinet according to a first external control instruction, and the variable-pitch control cabinet enables or disables the manual operation control box according to the enabling control signal;
the steering control assembly sends a steering control signal to the variable pitch control cabinet according to a second external control instruction, and the variable pitch control cabinet enables the blades to close or open the propellers according to the steering control signal;
the rotating speed control assembly sends a steering control signal to the variable pitch control cabinet according to a third external control instruction, and the variable pitch control cabinet controls the blades to open or close the blades at various rotating speeds according to the steering control signal.
Further, the rotational speed control assembly includes: the first rotating speed control device and the second rotating speed control device are respectively and electrically connected with the variable pitch control cabinet;
the first rotation speed control device includes: a first operating state and a second operating state, the second rotational speed control means including: a third operating state and a fourth operating state;
when the first rotation speed control means is in the first operation state and the second rotation speed control means is in the third operation state, the blades stop turning;
when the first rotation speed control means is in the first operation state and the second rotation speed control means is in the fourth operation state, the blades are turned at a low speed;
when the first rotating speed control device is in the second operating state and the second rotating speed control device is in the third operating state, the blades turn at a medium speed;
when the first rotation speed control means is in the second operation state and the second rotation speed control means is in the fourth operation state, the blades are turned at a high speed.
Further, the enable control component comprises: a fifth operating state and a sixth operating state;
when the enable control assembly is in the fifth operating state, the hand-operated control box is enabled;
and when the enabling control assembly is in the sixth running state, the manual operation control box is disabled.
Further, the steering control assembly includes: a seventh operating state and an eighth operating state;
when the steering control assembly is in the seventh operating state, the blades are opened;
and when the steering control assembly is in the eighth operation state, the blades are driven to pitch.
Further, the wind power pitch control system hand-operated control box further comprises: the state display component is arranged on the surface of the box body;
the state display assembly is electrically connected with the variable pitch control cabinet and displays the running state of the manual control box and/or the blade folding and unfolding state of the blades.
Further, the status display assembly includes: the first display device and the second display device are electrically connected with the variable pitch control cabinet respectively;
the first display device includes: a first display state and a second display state, the second display device comprising: a third display state and a fourth display state;
when the first display device is in the first display state, the manual operation control box is in an enabling state;
when the first display device is in the second display state, the manual operation control box is in a de-enabling state;
when the second display device is in the third display state, the blade is in an open state;
and when the second display device is in the fourth display state, the blade is in a oar-retracting state.
Further, the enable control assembly, the steering control assembly, and/or the rotational speed control assembly are mechanical buttons.
Correspondingly, a second aspect of the embodiment of the invention provides a wind power pitch control system, which comprises a pitch control cabinet and the manual operation control box of the wind power pitch control system;
the manual control box of the wind power pitch control system is electrically connected with the pitch control cabinet, and blades are controlled to be opened or closed at various rotating speeds through the pitch control cabinet according to a plurality of external control instructions.
The technical scheme of the embodiment of the invention has the following beneficial technical effects:
through the rotating speed control assembly, the rotating speed control of the blade in the blade opening and closing processes is realized, the defect that the function of the existing manual control box is simple and can only realize blade closing and opening is overcome, the use requirement of the blade on reducing or improving the rotating speed of the blade opening is met, and the adaptability of the wind power blade closing system to various use environments is improved.
Drawings
FIG. 1 is a schematic diagram of an electrical configuration of a prior art hand-operated control box;
fig. 2 is a schematic diagram of an electrical structure of the hand-operated control box according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Fig. 2 is a schematic diagram of an electrical structure of the hand-operated control box according to the embodiment of the present invention.
Referring to fig. 2, a first aspect of an embodiment of the present invention provides a wind turbine pitch control system hand-operated control box, including: the wind power pitch control system comprises a box body, and an enabling control assembly, a steering control assembly and a rotating speed control assembly which are respectively and electrically connected with a pitch control cabinet of the wind power pitch control system. The enabling control assembly, the steering control assembly and the rotating speed control assembly are all arranged on the surface of the box body; the enabling control assembly sends an enabling control signal to the variable-pitch control cabinet according to the first external control instruction, and the variable-pitch control cabinet enables or disables the manual control box according to the enabling control signal; the steering control assembly sends a steering control signal to the variable pitch control cabinet according to the second external control instruction, and the variable pitch control cabinet enables the blades to close or open the propellers according to the steering control signal; the rotating speed control assembly sends a steering control signal to the variable pitch control cabinet according to a third external control instruction, and the variable pitch control cabinet controls the blades to open or close the propellers at various rotating speeds according to the steering control signal.
Specifically, the rotational speed control assembly includes: and the first rotating speed control device and the second rotating speed control device are respectively and electrically connected with the variable pitch control cabinet. The first rotation speed control device includes: a first operating state and a second operating state, the second rotational speed control means including: a third operating state and a fourth operating state.
When the first rotating speed control device is in the first running state and the second rotating speed control device is in the third running state, the blades stop turning; when the first rotating speed control device is in the first running state and the second rotating speed control device is in the fourth running state, the blades are turned at a low speed; when the first rotating speed control device is in the second running state and the second rotating speed control device is in the third running state, the blades turn at a medium speed; when the first rotation speed control means is in the second operation state and the second rotation speed control means is in the fourth operation state, the blades are turned at a high speed.
Through the combination of high and low levels of two paths of opening channels (0 represents a low level, and 1 represents a high level), 4-gear blade speed regulation control is additionally arranged, wherein a state 00 corresponds to a zero-rotation speed gear, a state 01 corresponds to a low-rotation speed gear, a state 10 corresponds to a middle-rotation speed gear, and a state 11 corresponds to a high-rotation speed gear. The manual control box is additionally provided with a speed regulation function and is provided with 4 speed gears of a zero rotation speed gear, a low rotation speed gear, a middle rotation speed gear and a high rotation speed gear.
Specifically, the enabling control assembly includes: a fifth operating state and a sixth operating state.
When the enabling control assembly is in a fifth running state, enabling the hand-operated control box; and when the enabling control assembly is in the sixth running state, the control box is operated by hand to enable.
An enabling control button is added on the manual operation control box, and when the fault resetting of the variable pitch system is unsuccessful, the manual operation box does not need to be repeatedly plugged and pulled. Only when the enabling control button of the manual operation box is pressed, the variable pitch system can enter a manual operation enabling state, and the situation that the variable pitch system is immediately manually operated and controls the blades to rotate after the manual operation box is inserted is avoided.
Specifically, the steering control assembly includes: a seventh operating state and an eighth operating state.
When the steering control assembly is in a seventh running state, the blades are driven to be opened; and when the steering control assembly is in the eighth operation state, the blades are retracted.
The steering control of the blades is adjusted to be the existing single-path DI control from the original double-path DI control, the resource consumption of opening the variable pitch control cabinet into and out of the channel is reduced as much as possible, the blade retracting direction is represented when the DI detection result is low level, and the blade opening direction is represented when the DI detection result is high level.
In addition, wind-powered electricity generation becomes oar control system hand operation control box still includes: and the state display component is arranged on the surface of the box body. The state display assembly is electrically connected with the variable pitch control cabinet and displays the running state of the manual control box and/or the blade folding and unfolding state of the blades.
Specifically, the status display assembly includes: and the first display device and the second display device are respectively electrically connected with the variable pitch control cabinet.
The first display device includes: a first display state and a second display state, the second display device comprising: a third display state and a fourth display state.
When the first display device is in a first display state, the manual operation control box is in an enabling state; when the first display device is in the second display state, the manual operation control box is in an enable state; when the second display device is in a third display state, the blade is in a paddle opening state; when the second display device is in the fourth display state, the blade is in a blade retracting state. The manual control box is additionally provided with a state indication function and can indicate the working state (normal state, fault state, oar opening state and oar retracting state) of the variable propeller system. And a signal indicator light is additionally arranged on the manual operation box and used for indicating the current working state of the variable pitch system, so that the problem investigation under the abnormal condition of the system is facilitated. Through above-mentioned state display assembly, increased the state display function of manual control box and the operating state function of blade, improved the convenience of operation, promoted the security of the operation of the variable pitch control system.
Furthermore, two signal indicating lamps are added on the hand-operated box. The indicator light No. 1 is used to indicate the normal (lit) and fault (extinguished) states of the system. When the indicator light No. 1 is lighted, the indicator light No. 2 is used for indicating the paddle opening (lighting) and paddle closing (extinguishing) directions of the blade. When the indicator light No. 1 is turned off, the indicator light No. 2 is in an normally-off state and does not indicate any information.
In particular, the enable control assembly, the steering control assembly and/or the speed control assembly are mechanical buttons.
Specifically, as shown in fig. 1, in a specific implementation of the present embodiment, the 24V access DI1 of the pitch control cabinet continues to be maintained as the hand-operated enabling function, and an enabling control button S1 is added to the hand box. After the manual operation box is connected, the button S1 is pressed, the signal wire is closed, the 24V DI1 is opened, the rising edge level is received, the variable pitch system can automatically reset once fault (neglected if no fault exists), if the fault reset is unsuccessful, the button S1 can be released and pressed again to try to continuously reset the fault of the variable pitch system, and repeated plugging and unplugging of a wiring terminal are not needed. When the pitch system has no fault or the fault resetting is successful, the DO1 of the pitch control cabinet outputs high level, and the hand-operated box indicator light L1 is lightened. If the fault resetting is unsuccessful or the pitch control system suddenly breaks down in the manual operation process, the DO1 outputs low level, and the manual operation box indicator light L1 is turned off.
The 24V access DI2 of the pitch control cabinet is a hand operated steering control. When the state of the pitch system is normal (the hand-operated box indicator lamp L1 is turned on at the moment) and the hand-operated enable control DI1 is at a high level (the hand-operated box button S1 is pressed at the moment), if the hand-operated box button S2 is released (a signal line is disconnected, and the DI2 is at a low level), the hand-operated mode operates according to the pitch taking direction, and the hand-operated box indicator lamp L1 is turned on and L2 is turned off at the moment; when the hand-operated box button S2 is pressed (signal line (c) is closed, DI2 is high level), the hand-operated mode operates according to the paddle opening direction, and the hand-operated box indicator lamp L1 is lighted L2.
The 24V access DI3 and DI4 of the pitch control cabinet are hand-operated speed controls. When the hand box buttons S3 and S4 are released simultaneously (both DI3 and DI4 are low), the control blade enters the hand-operated zero-speed state; when S3 is pressed and S4 is released (DI3 is high and DI4 is low), the control blade enters the hand-operated low speed state; when S4 is pressed and S3 is released (DI4 is high and DI3 is low), the control vanes are brought into the hand-operated medium speed state; when S3 and S4 are pressed simultaneously (both DI3 and DI4 are high), the control blade enters the hand-operated high speed state at this time.
TABLE 1
Correspondingly, a second aspect of the embodiment of the invention provides a wind power pitch control system, which comprises a pitch control cabinet and any one of the manual operation control boxes of the wind power pitch control system.
The manual control box of the wind power pitch control system is electrically connected with the pitch control cabinet, and the blades are controlled to be opened or closed at various rotating speeds through the pitch control cabinet according to a plurality of external control instructions.
The embodiment of the invention aims to protect a manual operation control box of a wind power pitch control system and the wind power pitch control system, wherein the manual operation control box comprises: the wind power pitch control system comprises a box body, and an enabling control assembly, a steering control assembly and a rotating speed control assembly which are respectively and electrically connected with a pitch control cabinet of the wind power pitch control system. The enabling control assembly, the steering control assembly and the rotating speed control assembly are all arranged on the surface of the box body; the enabling control assembly sends an enabling control signal to the variable-pitch control cabinet according to the first external control instruction, and the variable-pitch control cabinet enables or disables the manual control box according to the enabling control signal; the steering control assembly sends a steering control signal to the variable pitch control cabinet according to the second external control instruction, and the variable pitch control cabinet enables the blades to close or open the propellers according to the steering control signal; the rotating speed control assembly sends a steering control signal to the variable pitch control cabinet according to a third external control instruction, and the variable pitch control cabinet controls the blades to open or close the propellers at various rotating speeds according to the steering control signal. The technical scheme has the following effects:
through the rotating speed control assembly, the rotating speed control of the blade in the blade opening and closing processes is realized, the defect that the function of the existing manual control box is simple and can only realize blade closing and opening is overcome, the use requirement of the blade on reducing or improving the rotating speed of the blade opening is met, and the adaptability of the wind power blade closing system to various use environments is improved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. The utility model provides a wind-powered electricity generation becomes oar control system hand operation control box which characterized in that includes: the wind power variable pitch system comprises a box body, and an enabling control assembly, a steering control assembly and a rotating speed control assembly which are respectively and electrically connected with a variable pitch control cabinet of the wind power variable pitch system;
the enabling control assembly, the steering control assembly and the rotating speed control assembly are all arranged on the surface of the box body;
the enabling control assembly sends an enabling control signal to the variable-pitch control cabinet according to a first external control instruction, and the variable-pitch control cabinet enables or disables the manual operation control box according to the enabling control signal;
the steering control assembly sends a steering control signal to the variable pitch control cabinet according to a second external control instruction, and the variable pitch control cabinet enables the blades to close or open the propellers according to the steering control signal;
the rotating speed control assembly sends a steering control signal to the variable pitch control cabinet according to a third external control instruction, and the variable pitch control cabinet controls the blades to open or close the blades at various rotating speeds according to the steering control signal.
2. The wind power pitch control system hand-operated control box according to claim 1,
the rotational speed control assembly comprises: the first rotating speed control device and the second rotating speed control device are respectively and electrically connected with the variable pitch control cabinet;
the first rotation speed control device includes: a first operating state and a second operating state, the second rotational speed control means including: a third operating state and a fourth operating state;
when the first rotation speed control means is in the first operation state and the second rotation speed control means is in the third operation state, the blades stop turning;
when the first rotation speed control means is in the first operation state and the second rotation speed control means is in the fourth operation state, the blades are turned at a low speed;
when the first rotating speed control device is in the second operating state and the second rotating speed control device is in the third operating state, the blades turn at a medium speed;
when the first rotation speed control means is in the second operation state and the second rotation speed control means is in the fourth operation state, the blades are turned at a high speed.
3. The wind power pitch control system hand-operated control box according to claim 1,
the enabling control component comprises: a fifth operating state and a sixth operating state;
when the enable control assembly is in the fifth operating state, the hand-operated control box is enabled;
and when the enabling control assembly is in the sixth running state, the manual operation control box is disabled.
4. The wind power pitch control system hand-operated control box according to claim 1,
the steering control assembly includes: a seventh operating state and an eighth operating state;
when the steering control assembly is in the seventh operating state, the blades are opened;
and when the steering control assembly is in the eighth operation state, the blades are driven to pitch.
5. The wind power pitch control system hand-operated control box according to any one of claims 1 to 4, further comprising: the state display component is arranged on the surface of the box body;
the state display assembly is electrically connected with the variable pitch control cabinet and displays the running state of the manual control box and/or the blade folding and unfolding state of the blades.
6. The wind power pitch control system hand-operated control box according to claim 5,
the status display assembly includes: the first display device and the second display device are electrically connected with the variable pitch control cabinet respectively;
the first display device includes: a first display state and a second display state, the second display device comprising: a third display state and a fourth display state;
when the first display device is in the first display state, the manual operation control box is in an enabling state;
when the first display device is in the second display state, the manual operation control box is in a de-enabling state;
when the second display device is in the third display state, the blade is in an open state;
and when the second display device is in the fourth display state, the blade is in a oar-retracting state.
7. The wind power pitch control system hand-operated control box according to any one of claims 1 to 4,
the enabling control assembly, the steering control assembly and/or the rotational speed control assembly are mechanical buttons.
8. A wind power pitch control system is characterized by comprising a pitch control cabinet and a manual operation control box of the wind power pitch control system according to any one of claims 1 to 7;
the manual control box of the wind power pitch control system is electrically connected with the pitch control cabinet, and blades are controlled to be opened or closed at various rotating speeds through the pitch control cabinet according to a plurality of external control instructions.
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| CN202110945732.8A CN113586333B (en) | 2021-08-16 | 2021-08-16 | Manual operation control box and manual operation control method for wind power pitch control system |
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| US20190010924A1 (en) * | 2015-12-23 | 2019-01-10 | Moog Unna Gmbh | Method for controlling a machine or process with increased safety |
| CN206860361U (en) * | 2017-05-31 | 2018-01-09 | 哈尔滨锐驰风力发电有限责任公司 | A kind of pitch control device |
| CN113007014A (en) * | 2021-03-16 | 2021-06-22 | 东方电气自动控制工程有限公司 | Control method of variable pitch control system |
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| CN113586333B (en) | 2022-12-13 |
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