阅读说明：本技术 一种智能偏航系统 (Intelligent yaw system ) 是由 高永峰 陈虎 傅杰 姚健 赵宏伟 李凯 张宁轩 徐伟 于 2021-01-11 设计创作，主要内容包括：本发明公开了一种智能偏航系统,包括电网调度模块,数控面板,通信模块,数据采集模块,总控PLC,报警模块,减震模块,变频器,偏航电机,所述电网调度模块与通信模块信号交互连接,所述通信模块与所述数控面板信号交互连接,所述通信模块与数据采集模块信号连接,所述通信模块与总控PLC信号交互连接,所述总控PLC与变频器信号交互连接,采用变频器驱动偏航系统还可以实现偏航的调速运行,变频器偏航系统的动态调节,响应速度快,速度变化的调整,提高风电机组偏航系统的精准度,使风电机组能够达到更好的控制效果,并能在风电机组偏航动作启动和停止状态时对偏航电机冲击电流起到缓冲作用,使风电机组使用更稳定,提高风电机组的使用寿命。(The invention discloses an intelligent yaw system, which comprises a power grid scheduling module, a numerical control panel, a communication module, a data acquisition module, a master control PLC, an alarm module, a damping module, a frequency converter and a yaw motor, wherein the power grid scheduling module is in signal interaction connection with the communication module, the communication module is in signal interaction connection with the numerical control panel, the communication module is in signal connection with the data acquisition module, the communication module is in signal interaction connection with the master control PLC, the master control PLC is in signal interaction connection with the frequency converter, the yaw system can be driven by the frequency converter to realize the speed regulation operation of yaw, the dynamic regulation of the yaw system of the frequency converter is quick in response speed and the regulation of speed change, the precision of the yaw system of a wind turbine generator is improved, the wind turbine generator can achieve better control effect, and the impact current of the yaw motor can be buffered when the yaw action of the wind turbine generator is started and stopped, the wind turbine generator is more stable to use, and the service life of the wind turbine generator is prolonged.)

1. The utility model provides an intelligence driftage system, includes electric wire netting dispatch module, numerical control panel, communication module, data acquisition module, total accuse PLC, alarm module, shock attenuation module, the converter, yaw motor, its characterized in that: the power grid dispatching module is in signal interactive connection with a communication module, the communication module is in signal interactive connection with the numerical control panel, the communication module is in signal connection with a data acquisition module, the communication module is in signal interactive connection with a general control PLC, the numerical control panel is in signal interactive connection with the general control PLC, the general control PLC is in signal interactive connection with a frequency converter, the frequency converter is respectively connected with a clockwise yaw module and an anticlockwise yaw module, the yaw motor is connected with the frequency converter, the clockwise yaw module and the anticlockwise yaw module are in signal connection with the yaw motor, the yaw motor is connected with an alarm module, the frequency converter is connected with the alarm module, the alarm module is in signal interactive connection with the general control PLC, and the damping module is connected with the frequency converter;

the power grid dispatching module comprises a data storage module, a real-time data module, a data prediction module and a plan instruction module, wherein the data storage module comprises a computing system and a big data operation platform, the real-time data module is used for providing data for the data acquisition module and the power grid dispatching module, the data prediction module is used for calculating current real-time data and obtaining data speculation according to an operation program, and the plan instruction module is used for making a plan for the power grid dispatching module;

the power grid dispatching module is used for analyzing data collected by the data acquisition module and related to wind speed, wind direction, wind angle, cable twisting angle, active power and reactive power of the generator set, transmitting the data to the data storage module through the communication module, then comparing other real-time data, predicting according to the data of the data storage module, formulating a power generation plan instruction, transmitting the data to the master control PLC through the communication module, and making a detailed production plan for the power generation plan and adjusting according to a production state by the master control PLC;

the numerical control panel module comprises a manual input module and a command input module, the command input module is a preset program, and the running program is directly sent to the master control PLC by pressing a corresponding key;

the manual input module is used for matching with a visual LCD operation panel, has the functions of parameter setting of the frequency converter, multi-line display of the state of the frequency converter, intuitive operation parameter setting and self-defined parameter group, and is convenient for quick operation of the master control PLC;

the frequency converter controls a yaw motor according to a signal instruction of the master control PLC to enable the clockwise yaw module and the anticlockwise yaw module to achieve clockwise yaw and anticlockwise yaw;

the yawing motion sequence of the yawing motor is as follows: in the normal state of the frequency converter, when a yaw action signal is received, firstly, a yaw motor brake is opened, and whether a short circuit phenomenon exists in the state of the yaw motor is checked; under the normal condition of a load state, driving a yaw motor to operate; when the yaw signal stops, the frequency converter stops driving the yaw motor to operate; after the yaw motor stops, closing a brake of the yaw motor, and ending yaw;

the alarm module monitors the temperature and the fault of the frequency converter and the temperature and the fault of the yaw motor, when the temperature of the frequency converter and the temperature of the yaw motor exceed the early warning temperature and the fault occurs, the alarm module sends out an alarm and sends out a signal to the master control PLC, and the master control PLC controls the alarm of the alarm module to be turned off.

2. An intelligent yawing system according to claim 1, wherein: when the wind direction changes and needs to yaw, the master control PLC outputs clockwise and anticlockwise yaw action signals, and the frequency converter controls the forward rotation and the reverse rotation of the yaw motor by identifying the type of the received yaw action signals, so that clockwise and anticlockwise yaw is realized.

3. An intelligent yawing system according to claim 1, wherein: the frequency converter drives the yaw system to realize the speed-regulating operation of yaw, and the dynamic regulation of the yaw system of the frequency converter has the advantages of high response speed and speed change regulation.

4. An intelligent yawing system according to claim 1, wherein: when the load fluctuates obviously, the frequency converter provides the best torque response, the speed fluctuation of the yaw motor is reduced to the minimum by a magnetic field control mode, the vibration is restrained, and the best voltage value is automatically calculated by the load power and supplied to the load when the yaw motor runs at a constant speed.

5. An intelligent yawing system according to claim 1, wherein: when the power is cut off instantly, the general control PLC controls the yaw motor to decelerate to stop through operation, and when the power supply is recovered, the yaw motor starts at a chasing speed.

6. An intelligent yawing system according to claim 1, wherein: the frequency converter and the yaw motor are controlled in a closed loop mode, when the temperatures of the yaw motor and the frequency converter are high and abnormal frequencies occur, the frequency converter detects that the yaw motor and the yaw motor break down, the frequency converter cuts off the output and outputs a fault alarm signal to the alarm module, and the alarm module transmits the signal into the master control PLC.

7. An intelligent yawing system according to claim 1, wherein: the master control PLC is connected with the frequency converter, and after the master control PLC sends an operation instruction to the frequency converter, the frequency converter returns a signal to the master control PLC.

8. An intelligent yawing system according to claim 1, wherein: the data acquisition module collects data of wind speed, wind direction, wind angle, cable twisting angle, active power and reactive power in the wind power plant and records the number of turns of the cable.

Technical Field

The invention relates to the technical field of wind power generation, in particular to an intelligent yaw system.

Background

The traditional control field of wind generating set driftage cable untwisting: because the wind direction has volatility and randomness, when the wind direction changes, the cabin is required to continuously align the wind according to the wind direction change, and when the cabin rotates to a certain angle, the cable in the tower can be twisted. Although the cable belongs to a flexible cable, the cable also has a limit torsion angle, so that when the cable reaches the limit angle, the wind turbine generator needs to automatically yaw to release the cable, otherwise, a serious power accident can occur. In a traditional wind turbine generator control system, when a cable torsion limit angle is reached, the wind turbine generator must be stopped, and then a yaw module is controlled to rotate a cabin to restore a flexible cable to an original straight state;

the driftage system of current wind turbine generator system adopts the contactor to switch on electric wire netting and yaw motor basically, and realize the switching-over through the phase modulation, braking force is not enough under the strong wind condition, the cabin slides appearing, reaction is to driftage driver band-type brake, lead to band-type brake block wearing and tearing aggravation, make its inefficacy with higher speed, the cracked condition in smooth storehouse appears even, the impaired serious unable restoration in some parts, can only change, the manpower and materials that the annual wind turbine generator system trouble spent are all high, therefore, an intelligent driftage system is proposed.

Disclosure of Invention

The present invention is directed to an intelligent yaw system to solve the problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: an intelligent yaw system comprises a power grid scheduling module, a numerical control panel, a communication module, a data acquisition module, a general control PLC, an alarm module, a damping module, a frequency converter and a yaw motor, wherein the power grid scheduling module is in signal interaction connection with the communication module, the communication module is in signal interaction connection with the numerical control panel, the communication module is in signal connection with the data acquisition module, the communication module is in signal interaction connection with the general control PLC, the numerical control panel is in signal interaction connection with the general control PLC, the general control PLC is in signal interaction connection with the frequency converter, the frequency converter is respectively connected with a clockwise yaw module and a counterclockwise yaw module, the yaw motor is connected with the frequency converter, the clockwise yaw module and the counterclockwise yaw module are in signal connection with the yaw motor, the yaw motor is connected with the alarm module, and the frequency converter is connected with the alarm module, the alarm module is in signal interaction connection with the master control PLC, and the damping module is connected with the frequency converter;

the power grid dispatching module comprises a data storage module, a real-time data module, a data prediction module and a plan instruction module, wherein the data storage module comprises a computing system and a big data operation platform, the real-time data module is used for providing data for the data acquisition module and the power grid dispatching module, the data prediction module is used for calculating current real-time data and obtaining data speculation according to an operation program, and the plan instruction module is used for making a plan for the power grid dispatching module;

the power grid dispatching module is used for analyzing data collected by the data acquisition module and related to wind speed, wind direction, wind angle, cable twisting angle, active power and reactive power of the generator set, transmitting the data to the data storage module through the communication module, then comparing other real-time data, predicting according to the data of the data storage module, formulating a power generation plan instruction, transmitting the data to the master control PLC through the communication module, and making a detailed production plan for the power generation plan and adjusting according to a production state by the master control PLC;

the numerical control panel module comprises a manual input module and a command input module, the command input module is a preset program, and the running program is directly sent to the master control PLC by pressing a corresponding key;

the manual input module is used for matching with a visual LCD operation panel, has the functions of parameter setting of the frequency converter, multi-line display of the state of the frequency converter, intuitive operation parameter setting and self-defined parameter group, and is convenient for quick operation of the master control PLC;

the frequency converter controls a yaw motor according to a signal instruction of the master control PLC to enable the clockwise yaw module and the anticlockwise yaw module to achieve clockwise yaw and anticlockwise yaw;

the yawing motion sequence of the yawing motor is as follows: in the normal state of the frequency converter, when a yaw action signal is received, firstly, a yaw motor brake is opened, and whether a short circuit phenomenon exists in the state of the yaw motor is checked; under the normal condition of a load state, driving a yaw motor to operate; when the yaw signal stops, the frequency converter stops driving the yaw motor to operate; after the yaw motor stops, closing a brake of the yaw motor, and ending yaw;

the alarm module monitors the temperature and the fault of the frequency converter and the temperature and the fault of the yaw motor, when the temperature of the frequency converter and the temperature of the yaw motor exceed the early warning temperature and the fault occurs, the alarm module sends out an alarm and sends out a signal to the master control PLC, and the master control PLC controls the alarm of the alarm module to be turned off.

As further preferable in the present technical solution: when the wind direction changes and needs to yaw, the master control PLC outputs clockwise and anticlockwise yaw action signals, and the frequency converter controls the forward rotation and the reverse rotation of the yaw motor by identifying the type of the received yaw action signals, so that clockwise and anticlockwise yaw is realized.

As further preferable in the present technical solution: the frequency converter drives the yaw system to realize the speed-regulating operation of yaw, and the dynamic regulation of the yaw system of the frequency converter has the advantages of high response speed and speed change regulation.

As further preferable in the present technical solution: when the load fluctuates obviously, the frequency converter provides the best torque response, the speed fluctuation of the yaw motor is reduced to the minimum by a magnetic field control mode, the vibration is restrained, and the best voltage value is automatically calculated by the load power and supplied to the load when the yaw motor runs at a constant speed.

As further preferable in the present technical solution: when the power is cut off instantly, the general control PLC controls the yaw motor to decelerate to stop through operation, and when the power supply is recovered, the yaw motor starts at a chasing speed.

As further preferable in the present technical solution: the frequency converter and the yaw motor are controlled in a closed loop mode, when the temperatures of the yaw motor and the frequency converter are high and abnormal frequencies occur, the frequency converter detects that the yaw motor and the yaw motor break down, the frequency converter cuts off the output and outputs a fault alarm signal to the alarm module, and the alarm module transmits the signal into the master control PLC.

As further preferable in the present technical solution: the master control PLC is connected with the frequency converter, and after the master control PLC sends an operation instruction to the frequency converter, the frequency converter returns a signal to the master control PLC.

As further preferable in the present technical solution: the data acquisition module collects data of wind speed, wind direction, wind angle, cable twisting angle, active power and reactive power in the wind power plant and records the number of turns of the cable.

Compared with the prior art, the invention has the beneficial effects that: the yaw system is driven by the frequency converter, so that the yaw speed regulation operation can be realized, the dynamic regulation of the yaw system of the frequency converter is realized, the response speed is high, the speed change is adjusted, the accuracy of the yaw system of the wind turbine generator is improved, the wind turbine generator can achieve a better control effect, the impact current of a yaw motor can be buffered when the yaw motion of the wind turbine generator is started and stopped, the wind turbine generator is more stably used, and the service life of the wind turbine generator is prolonged.

Drawings

FIG. 1 is a flow chart of the system of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1, the present invention provides a technical solution: an intelligent yaw system comprises a power grid scheduling module, a numerical control panel, a communication module, a data acquisition module, a general control PLC, an alarm module, a damping module, a frequency converter and a yaw motor, wherein the power grid scheduling module is in signal interaction connection with the communication module, the communication module is in signal interaction connection with the numerical control panel, the communication module is in signal connection with the data acquisition module, the communication module is in signal interaction connection with the general control PLC, the numerical control panel is in signal interaction connection with the general control PLC, the general control PLC is in signal interaction connection with the frequency converter, the frequency converter is respectively connected with a clockwise yaw module and an anticlockwise yaw module, the yaw motor is connected with the frequency converter, the clockwise yaw module and the anticlockwise yaw module are in signal connection with the yaw motor, the yaw motor is connected with the alarm module, the frequency converter is connected with the alarm module, the alarm module is in signal interaction connection with the;

the power grid dispatching module comprises a data storage module, a real-time data module, a data prediction module and a plan instruction module, wherein the data storage module comprises a computing system and a big data operation platform, the real-time data module is used for providing data for the data acquisition module and the power grid dispatching module, the data prediction module is used for calculating current real-time data and obtaining data speculation according to an operation program, and the plan instruction module is used for making a plan for the power grid dispatching module;

the power grid dispatching module is used for analyzing data collected by the data acquisition module and related to wind speed, wind direction, wind angle, cable twisting angle, active power and reactive power of the generator set, transmitting the data to the data storage module through the communication module, then comparing other real-time data, predicting according to the data of the data storage module, formulating a power generation plan instruction, transmitting the data to the master control PLC through the communication module, and making a detailed production plan for the power generation plan and adjusting according to a production state by the master control PLC;

the numerical control panel module comprises a manual input module and a command input module, the command input module is a preset program, and the running program is directly sent to the master control PLC by pressing a corresponding key;

the manual input module is used for matching with a visual LCD operation panel, has the functions of parameter setting of the frequency converter, multi-line display of the state of the frequency converter, intuitive operation parameter setting and self-defined parameter group, and is convenient for quick operation of the master control PLC;

the frequency converter controls a yaw motor according to a signal instruction of the master control PLC to enable the clockwise yaw module and the anticlockwise yaw module to achieve clockwise yaw and anticlockwise yaw;

the yawing motion sequence of the yawing motor is as follows: in the normal state of the frequency converter, when a yaw action signal is received, firstly, a yaw motor brake is opened, and whether a short circuit phenomenon exists in the state of the yaw motor is checked; under the normal condition of a load state, driving a yaw motor to operate; when the yaw signal stops, the frequency converter stops driving the yaw motor to operate; after the yaw motor stops, closing a brake of the yaw motor, and ending yaw;

the alarm module monitors the temperature and the fault of the frequency converter and the temperature and the fault of the yaw motor, when the temperature of the frequency converter and the temperature of the yaw motor exceed the early warning temperature and have the fault, the alarm module sends out an alarm and sends out a signal to the master control PLC, and the master control PLC controls the alarm of the alarm module to be turned off.

In this embodiment, specifically: when the wind direction changes and needs to yaw, the master control PLC outputs clockwise and anticlockwise yaw action signals, and the frequency converter controls the forward rotation and the reverse rotation of a yaw motor by identifying the type of the received yaw action signal so as to realize clockwise and anticlockwise yaw; the frequency converter can control the yaw motor according to the signal instruction of the master control PLC, so that the clockwise yaw module and the anticlockwise yaw module can achieve clockwise yaw and anticlockwise yaw, and the yaw work is carried out more conveniently.

In this embodiment, specifically: the speed regulation operation of driftage is realized to converter drive driftage system, and the dynamic adjustment of converter driftage system, response speed is fast, and the adjustment of speed change, and then can improve wind turbine generator system driftage system's precision, makes wind turbine generator system can reach better control effect.

In this embodiment, specifically: when the load fluctuates obviously, the frequency converter provides the best torque response, the speed fluctuation of the yaw motor is reduced to the minimum by a magnetic field control mode, the vibration is restrained, and the best voltage value is automatically calculated by the load power and supplied to the load when the yaw motor runs at a constant speed.

In this embodiment, specifically: when the power is cut off instantly, the master control PLC controls the yaw motor to decelerate to stop through operation, and when the power supply is recovered, the yaw motor starts at a speed following mode, so that electric power energy required by torque generated during starting can be saved.

In this embodiment, specifically: closed-loop control is formed between the frequency converter and the yaw motor, when the temperature of the yaw motor and the frequency converter is high and abnormal frequency occurs, the frequency converter detects that the yaw motor and the frequency converter break down, the frequency converter can cut off output and output a fault alarm signal to the alarm module, and the alarm module conducts the signal into the master control PLC.

In this embodiment, specifically: be interconnect between total PLC and the converter, after total PLC sends operating instruction to the converter, the converter returns the signal for total PLC, and total PLC makes detailed production plan to the power generation plan to adjust according to production state, the work of yawing that carries on more conveniently.

In this embodiment, specifically: the data acquisition module collects data of wind speed, wind direction, wind angle, cable twisting angle, active power and reactive power in the wind power plant, and records the number of turns of the oppositely wound cables.

Working principle or structural principle, when in use, the power grid dispatching module collects the wind speed of the generator set collected by the data acquisition module, the wind direction, the wind angle, the cable twisting angle, the data of active power and reactive power, the data transmitted to the data storage module through the communication module is analyzed, other real-time data are compared, a power generation plan instruction is formulated, the data are transmitted to the master control PLC through the communication module, the master control PLC makes a detailed production plan for the power generation plan and adjusts the production state, the frequency converter can control the yaw motor according to the signal instruction of the master control PLC to enable the clockwise yaw module and the anticlockwise yaw module to achieve clockwise yaw and anticlockwise yaw, and the yaw work is more conveniently carried out, the manual input module is matched with the visual LCD operating panel, and the power grid dispatching module has the functions of parameter setting of the frequency converter, multi-line display frequency converter state, speed regulation and the, The functions of intuitive operation parameter setting, self-setting parameter groups and the like are convenient for fast operation of the master control PLC; when the wind direction changes and needs to yaw, the master control PLC outputs clockwise and anticlockwise yaw action signals, and the frequency converter controls the forward rotation and the reverse rotation of the yaw motor by identifying the type of the received yaw action signals, so that clockwise and anticlockwise yaw is realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.