A wind power generation start-up timeout alarm system

Abstract

The utility model provides a kind of wind power generation starting overtime alarm system, it is related to wind power generation field, the wind power generation starting overtime alarm system, including the rotational speed monitoring unit of monitoring blade rotational speed, including the power generation monitoring unit of monitoring wind power generation, rotational speed monitoring unit and power generation monitoring unit are connected by controller control, and the output end of controller is connected with alarm unit under control.The wind power generation starting overtime alarm system, the rotational speed monitoring unit set by monitoring the rotating speed of blade, and monitor unit power generation, by monitoring the rotating speed of blade in unit time is insufficient, or the rotating speed of blade is normal and cannot monitor normal power generation, to determine wind power generation unit abnormal start, and send alarm, to be able to find the problem of wind power generation starting overtime in time.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, specifically a wind power generation start-up timeout alarm system. Background Technology

[0002] In the centralized monitoring and operation mode of new energy sources, the normal startup of wind turbines is crucial for power generation efficiency and equipment safety. However, during the startup process, wind turbines may fail to start normally due to various reasons, resulting in startup timeouts. If startup timeouts are not promptly detected and addressed, it may lead to problems such as power generation loss or equipment damage.

[0003] CN104953616B discloses a black-start system for wind power plants, comprising a wind turbine generator group, an energy storage power supply providing starting power for the black-start system, a flexible AC transmission device, and a central control unit. The wind turbine generator group includes N wind turbines connected in parallel, each wind turbine having one end connected to an output circuit breaker connected in parallel to the busbar of the wind power plant, and the other end connected to N corresponding local monitoring units. The flexible AC transmission device is connected in parallel to the busbar of the wind power plant. The central control unit communicates in real-time bidirectionally with the energy storage power supply, the flexible AC transmission device, and the local monitoring units via a signal bus. A method for black-starting a wind power plant is also disclosed. This technical solution achieves self-starting of the wind farm without relying on the external power grid when the entire wind farm is powered off, and can optimize the starting sequence of the wind turbines according to real-time wind speed conditions, thereby achieving an economical and rapid black-start process. However, this black-start method cannot monitor whether the start-up timeout has occurred. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a wind power generation start-up timeout alarm system, which solves the problem of lacking alarms for wind turbine start-up timeouts.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a wind power generation start-up timeout alarm system, including a speed monitoring unit for monitoring blade rotation speed and a power generation monitoring unit for monitoring wind power generation, the speed monitoring unit and the power generation monitoring unit are connected by a controller, and an alarm unit is connected to the output of the controller.

[0007] Furthermore, it includes a temperature sensor, which is connected to the controller. The temperature sensor is installed at least in the frequency converter, gearbox, and control cabinet of the wind turbine.

[0008] Furthermore, it includes an oil pressure monitoring unit for monitoring gearbox oil pressure.

[0009] Furthermore, it includes a yaw coding unit for monitoring the yaw status of the wind turbine.

[0010] Furthermore, it includes a voltage monitoring unit for monitoring battery voltage.

[0011] Furthermore, this includes wind speed monitoring units for monitoring wind speed.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This wind power generation start-up timeout alarm system monitors the blade rotation speed and the generator power output through a speed monitoring unit. If the system detects insufficient blade rotation speed or normal power output despite normal blade rotation speed within a unit of time, it can determine that the wind power generator is starting abnormally and issue an alarm, thus enabling timely detection of wind power generation start-up timeout issues.

[0014] 2. This wind power generation start-up timeout alarm system, through the monitoring units set at various locations, monitors the locations that commonly affect the start-up of wind turbine generators. This allows the system to promptly output the data from each monitoring unit through the alarm unit when the wind power generation start-up timeout occurs, thus facilitating the determination of the specific location affecting the start-up. Attached Figure Description

[0015] Figure 1 This is a structural block diagram of the present utility model.

[0016] The components include: 1. Speed ​​monitoring unit; 2. Power generation monitoring unit; 3. Controller; 4. Alarm unit; 5. Temperature sensor; 6. Oil pressure monitoring unit; 7. Yaw coding unit; 8. Voltage monitoring unit; and 9. Wind speed monitoring unit. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] See Figure 1A wind power generation start-up timeout alarm system includes a speed monitoring unit 1 for monitoring blade rotation speed, comprising an all-metal inductive sensor mounted at the head of each turbine, near the main mounting ring of the blade assembly. When the blade rotates, the mounting ring also rotates and passes through the sensing surface of the sensor. The angular spacing of the bolts is known. The blade rotation speed can be calculated by measuring the time interval between consecutive signals.

[0019] The system includes a power generation monitoring unit 2 that monitors wind power generation. The power generation monitoring unit 2 can be either directly connected or inductive. The speed monitoring unit 1 and the power generation monitoring unit 2 are connected by a controller 3. The output of the controller 3 is connected to an alarm unit 4. The alarm unit 4 has the function of communicating with the remote control system and sending alarm information to the remote control terminal.

[0020] It includes a temperature sensor 5, which is connected to the controller 3. The temperature sensor 5 is installed at least in the frequency converter, gearbox and control cabinet of the wind turbine. The temperature sensor 5 is selected according to the usage environment and is guaranteed to have data transmission function. The temperature of each monitoring point is monitored through the temperature sensor 5.

[0021] It includes an oil pressure monitoring unit 6 for monitoring gearbox oil pressure, and the oil pressure monitoring unit 6 uses an oil pressure sensor.

[0022] It includes a yaw coding unit 7 for monitoring the yaw status of the wind turbine. The yaw coding unit 7 is a yaw encoder (angle sensor) that determines the yaw status of the wind turbine by monitoring the change in angle. Multiple yaw coding units 7 can be set to avoid the inability to calibrate if a single yaw coding unit 7 loses its zero position.

[0023] It includes a voltage monitoring unit 8 for monitoring the battery voltage. A low battery voltage cannot drive the pitch system to work, so monitoring the battery voltage can determine whether the start-up failure is related to the pitch system.

[0024] It includes a wind speed monitoring unit 9 for monitoring wind speed. The wind speed and direction meter for wind power generation is installed on the meteorological rack on the top surface of the wind turbine nacelle. The working principle is to use the ultrasonic time difference method to measure wind speed and direction.

[0025] During use, the power generation monitoring unit 2 did not detect any power output from the unit that met the grid connection conditions within a unit of time.

[0026] The 5-minute average wind speed is monitored by the wind speed monitoring unit 9, and the blade rotation speed is monitored by the rotation speed monitoring unit 1 to see if the blade is rotating at the corresponding wind speed.

[0027] When the unit is in startup state for 30 minutes; or when the average wind speed over 5 minutes is greater than a set threshold, such as 3.5 m / s, which can be adjusted according to different seasons and models, it lasts for 30 minutes.

[0028] Or, when not yawed, the 5-minute average wind speed is greater than the set threshold for 20 minutes.

[0029] If any of the above conditions are met, it is determined that the start timeout has occurred, and at this time the controller 3 will issue an alarm through the control alarm unit 4.

[0030] Then, based on the data from each monitoring unit, the possible alarm causes are output through alarm unit 4.

[0031] If the unit starts up for more than 30 minutes due to automatic yaw or cable unwinding, the system will automatically mark it as "startup timeout" and issue a warning. If the unit continues to start up automatically by yaw for more than 30 minutes and is marked as "startup timeout" again, a special warning will be issued, and the yaw coding unit 7 will monitor the yaw angle of the wind turbine.

[0032] The gearbox temperature is monitored by the oil pressure monitoring unit 6 and the temperature sensor 5, and the gearbox is determined to be in a suitable operating condition by the oil pressure reading and oil pressure temperature.

[0033] By monitoring the battery voltage, it can be determined whether a low battery voltage is causing a start-up timeout.

[0034] The power generation monitoring unit 2 monitors whether the power output meets the grid connection requirements.

[0035] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wind power generation start-up timeout alarm system, comprising a speed monitoring unit (1) for monitoring blade speed, characterized in that: The unit includes a power generation monitoring unit (2) for monitoring wind power generation, a speed monitoring unit (1) and a power generation monitoring unit (2) connected by a controller (3), and an alarm unit (4) connected to the output of the controller (3). It also includes a temperature sensor (5), an oil pressure monitoring unit (6) for monitoring gearbox oil pressure, a yaw coding unit (7) for monitoring wind turbine yaw status, a voltage monitoring unit (8) for monitoring battery voltage, and a wind speed monitoring unit (9) for monitoring wind speed. The temperature sensor (5) is connected to the controller (3). The temperature sensor (5) is installed at least at the frequency converter, gearbox, and control cabinet of the wind turbine. Multiple yaw coding units (7) are provided.

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