CN115929540A - Pitch control method for wind turbines - Google Patents
Pitch control method for wind turbines Download PDFInfo
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- CN115929540A CN115929540A CN202111486686.6A CN202111486686A CN115929540A CN 115929540 A CN115929540 A CN 115929540A CN 202111486686 A CN202111486686 A CN 202111486686A CN 115929540 A CN115929540 A CN 115929540A
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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
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- 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
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Abstract
风力发电机组的变桨控制方法。在风力发电机组中,由于变桨系统的轮毂是随叶轮一起转动的,而机舱是固定的,所以导电滑环是风力发电机组中不可缺少的部件之一。本发明组成包括:主控控制器、多个变桨控制器和滑环,所述的滑环包括多个通信信道,所述的多个通信信道分别将主控控制器与所述的变桨控制器中的每一个连接以进行数据通信。本发明用于风力发电机组的变桨控制。A pitch control method for a wind power generating set. In the wind turbine, since the hub of the pitch system rotates with the impeller, while the nacelle is fixed, the conductive slip ring is one of the indispensable components in the wind turbine. The composition of the present invention includes: a main control controller, multiple pitch controllers and a slip ring, the slip ring includes multiple communication channels, and the multiple communication channels respectively connect the main control controller and the pitch control Each connection in the controller for data communication. The invention is used for the pitch control of the wind power generating set.
Description
技术领域technical field
本发明涉及一种风力发电机组的变桨控制方法。The invention relates to a pitch control method of a wind power generating set.
背景技术Background technique
风力发电机组是将风能转换成电能的设备。在风力发电机组的控制中,变桨控制是其中的主要环节。在风力发电机组中,由于变桨系统的轮毂是随叶轮一起转动的,而机舱是固定的,所以导电滑环是风力发电机组中不可缺少的部件之一。A wind turbine is a device that converts wind energy into electrical energy. In the control of wind turbines, pitch control is the main link. In the wind turbine, since the hub of the pitch system rotates with the impeller, while the nacelle is fixed, the conductive slip ring is one of the indispensable components in the wind turbine.
发明内容Contents of the invention
本发明的目的是提供一种风力发电机组的变桨控制方法。The purpose of the present invention is to provide a pitch control method of a wind power generating set.
上述目的通过以下方案实现:The above purpose is achieved through the following schemes:
一种风力发电机组的变桨控制方法,其变桨控制器包括:主控控制器、多个变桨控制器和滑环,所述的滑环包括多个通信信道,所述的多个通信信道分别将主控控制器与所述的变桨控制器中的每一个连接以进行数据通信;A pitch control method for a wind power generating set, wherein the pitch controller includes: a master controller, multiple pitch controllers and a slip ring, the slip ring includes multiple communication channels, and the multiple communication channels The channel respectively connects the main control controller with each of the pitch controllers for data communication;
该方法包括如下步骤:主控控制器确定风力发电机组是否发生单轴通信故障;The method includes the following steps: the main control controller determines whether a single-axis communication failure occurs in the wind power generating set;
风力发电机组的主控制器预测超前预设时间段内的每个控制周期的变桨控制数据;The main controller of the wind power generating set predicts the pitch control data of each control cycle in the advance preset time period;
所述主控制器根据所述变桨控制数据生成对应的预测变桨控制指令,并将所述预测变桨控制指令发送给变桨控制器,以使所述变桨控制器按接收顺序进行存储;The main controller generates a corresponding predicted pitch control command according to the pitch control data, and sends the predicted pitch control command to the pitch controller, so that the pitch controller stores the ;
若导电滑环通信中断,所述变桨控制器按照所述预测变桨控制指令的存储顺序依次执行预测变桨控制指令,以进行变桨操作。If the conductive slip ring communication is interrupted, the pitch controller sequentially executes the predicted pitch control commands according to the storage order of the predicted pitch control commands, so as to perform the pitch operation.
所述的风力发电机组的变桨控制方法,所述的变桨控制器被配置为:In the pitch control method of the wind power generating set, the pitch controller is configured as:
预测变桨控制指令接收单元、预测变桨控制指令存储单元和控制单元;A predictive pitch control command receiving unit, a predictive pitch control command storage unit and a control unit;
当检测到第一安全链中的继电器的电平为低电平并且第二安全链中的继电器的电平为高电平时,控制所述变桨系统按照预定速度执行收桨操作;When it is detected that the level of the relay in the first safety chain is a low level and the level of the relay in the second safety chain is a high level, control the pitch control system to perform a pitch retracting operation at a predetermined speed;
当检测到第一安全链和第二安全链中的继电器的电平为高电平时,控制所述变桨系统按照预定速度执行开桨操作。When it is detected that the levels of the relays in the first safety chain and the second safety chain are at a high level, the pitch control system is controlled to perform a propeller opening operation at a predetermined speed.
所述的风力发电机组的变桨控制方法,所述的主控制器还包括:In the pitch control method of the wind power generating set, the main controller further includes:
实时桨距角计算单元以及实时变桨控制指令生成单元;A real-time pitch angle calculation unit and a real-time pitch control command generation unit;
所述的变桨控制器的控制单元还用于在导电滑环通信未中断时,根据实时变桨控制指令控制执行变桨控制操作,确定冗余运行模式是否到期;当冗余运行模式到期时,确定所述单轴通信故障是否恢复正常。The control unit of the pitch controller is also used to control and execute the pitch control operation according to the real-time pitch control command when the conductive slip ring communication is not interrupted, and determine whether the redundant operation mode expires; when the redundant operation mode expires During the period, determine whether the single-axis communication failure returns to normal.
有益效果:Beneficial effect:
1.本发明由于预先将超前预设时间段内的变桨控制指令进行了存储,所以即使导电滑环通信中断,也能够依据存储的变桨控制指令控制叶片进行变桨操作,能够避免风力发电机组不必要的停机,提高了风力发电机组的发电量。1. Since the present invention stores the pitch control command within the preset time period in advance, even if the conductive slip ring communication is interrupted, the blades can be controlled to perform the pitch operation according to the stored pitch control command, and wind power generation can be avoided. Unnecessary stoppage of the unit improves the power generation of the wind power generation unit.
2.本发明能够在发生通信故障时在冗余运行期间,通过安全链硬件的电平信号的类型,控制风力发电机的调桨方向,避免由于叶片的调桨控制而导致立即触发故障。2. The present invention can control the pitch adjustment direction of the wind power generator through the type of the level signal of the safety chain hardware during redundant operation when a communication fault occurs, and avoid immediate triggering of faults due to the blade pitch control.
具体实施方式:Detailed ways:
实施例1:Example 1:
一种风力发电机组的变桨控制方法,其变桨控制器包括:主控控制器、多个变桨控制器和滑环,所述的滑环包括多个通信信道,所述的多个通信信道分别将主控控制器与所述的变桨控制器中的每一个连接以进行数据通信;A pitch control method for a wind power generating set, wherein the pitch controller includes: a main control controller, multiple pitch controllers and a slip ring, the slip ring includes multiple communication channels, and the multiple communication channels The channel respectively connects the main control controller with each of the pitch controllers for data communication;
该方法包括如下步骤:主控控制器确定风力发电机组是否发生单轴通信故障;The method includes the following steps: the main control controller determines whether a single-axis communication failure occurs in the wind power generating set;
风力发电机组的主控制器预测超前预设时间段内的每个控制周期的变桨控制数据;The main controller of the wind power generating set predicts the pitch control data of each control cycle in the advance preset time period;
所述主控制器根据所述变桨控制数据生成对应的预测变桨控制指令,并将所述预测变桨控制指令发送给变桨控制器,以使所述变桨控制器按接收顺序进行存储;The main controller generates a corresponding predicted pitch control command according to the pitch control data, and sends the predicted pitch control command to the pitch controller, so that the pitch controller stores the ;
若导电滑环通信中断,所述变桨控制器按照所述预测变桨控制指令的存储顺序依次执行预测变桨控制指令,以进行变桨操作。If the conductive slip ring communication is interrupted, the pitch controller sequentially executes the predicted pitch control instructions according to the storage order of the predicted pitch control instructions, so as to perform the pitch operation.
实施例2:Example 2:
根据实施例1所述的风力发电机组的变桨控制方法,所述的变桨控制器被配置为:According to the pitch control method of the wind power generating set described in Embodiment 1, the pitch controller is configured to:
预测变桨控制指令接收单元、预测变桨控制指令存储单元和控制单元;A predictive pitch control command receiving unit, a predictive pitch control command storage unit and a control unit;
当检测到第一安全链中的继电器的电平为低电平并且第二安全链中的继电器的电平为高电平时,控制所述变桨系统按照预定速度执行收桨操作;When it is detected that the level of the relay in the first safety chain is a low level and the level of the relay in the second safety chain is a high level, control the pitch control system to perform a pitch retracting operation at a predetermined speed;
当检测到第一安全链和第二安全链中的继电器的电平为高电平时,控制所述变桨系统按照预定速度执行开桨操作。When it is detected that the levels of the relays in the first safety chain and the second safety chain are at a high level, the pitch control system is controlled to perform a propeller opening operation at a predetermined speed.
实施例3:Example 3:
根据实施例1或2所述的风力发电机组的变桨控制方法,所述的主控制器还包括:According to the pitch control method of the wind power generating set described in embodiment 1 or 2, the main controller further includes:
实时桨距角计算单元以及实时变桨控制指令生成单元;A real-time pitch angle calculation unit and a real-time pitch control command generation unit;
所述的变桨控制器的控制单元还用于在导电滑环通信未中断时,根据实时变桨控制指令控制执行变桨控制操作,确定冗余运行模式是否到期;当冗余运行模式到期时,确定所述单轴通信故障是否恢复正常。The control unit of the pitch controller is also used to control and execute the pitch control operation according to the real-time pitch control command when the conductive slip ring communication is not interrupted, and determine whether the redundant operation mode expires; when the redundant operation mode expires During the period, determine whether the single-axis communication failure returns to normal.
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Application publication date: 20230407 |