阅读说明：本技术 一种风电机组的控制方法及控制系统 (Control method and control system of wind turbine generator ) 是由 刘心社 高亚春 程林志 苏凤宇 岳红轩 卢晓光 李春阳 刘伟鹏 李延青 徐奉友 于 2019-09-10 设计创作，主要内容包括：本发明涉及一种风电机组的控制方法及控制系统,将各风电机组控制器进行互联,以实现各风电机组控制器之间的信息交互；各风电机组控制器实时获取其对应的风电机组自身的环境信息,该环境信息为影响风电机组故障的信息；当风电机组控制器无法获取其对应的风电机组自身的某一环境信息时,则获取与该风电机组控制器互联的其他风电机组控制器对应的环境信息；风电机组控制器根据获取的其他风电机组控制器对应的环境信息,确定自身对应风电机组的控制策略,并根据确定的控制策略对自身对应风电机组进行控制。本发明避免了某一环境信息缺失导致风电机组的控制策略不准确的现象,避免了机组停机或故障,有效保证了风电机组正常运行。(The invention relates to a control method and a control system of a wind turbine generator, which are used for interconnecting controllers of all wind turbine generators so as to realize information interaction among the controllers of all the wind turbine generators; each wind generating set controller acquires the self environmental information of the corresponding wind generating set in real time, wherein the environmental information is information influencing the faults of the wind generating sets; when the wind generating set controller cannot acquire certain environmental information of the wind generating set corresponding to the wind generating set controller, acquiring environmental information corresponding to other wind generating set controllers interconnected with the wind generating set controller; and the wind generating set controller determines a control strategy of the wind generating set corresponding to the wind generating set according to the acquired environment information corresponding to other wind generating set controllers, and controls the wind generating set corresponding to the wind generating set according to the determined control strategy. The method avoids the phenomenon that the control strategy of the wind turbine generator is inaccurate due to the loss of certain environmental information, avoids the shutdown or the fault of the wind turbine generator, and effectively ensures the normal operation of the wind turbine generator.)

1. A control method of a wind turbine generator is characterized by comprising the following steps:

interconnecting the wind generating set controllers to realize information interaction among the wind generating set controllers;

each wind generating set controller acquires the self environmental information of the corresponding wind generating set in real time, wherein the environmental information is information influencing the faults of the wind generating set;

when the wind generating set controller cannot acquire certain environmental information of the wind generating set corresponding to the wind generating set controller, acquiring environmental information corresponding to wind generating sets of other wind generating set controllers interconnected with the wind generating set controller;

and the wind generating set controller determines a control strategy of the wind generating set corresponding to the wind generating set according to the acquired environment information corresponding to the wind generating sets of other wind generating set controllers, and controls the wind generating set corresponding to the wind generating set according to the determined control strategy.

2. The method of claim 1, wherein the wind turbine controllers are interconnected using a POWERLINK ring network.

3. The control method of a wind turbine according to claim 1 or 2, wherein the environmental information includes gust, turbulence, outside-cabin temperature, air density and icing data.

4. The utility model provides a control system of wind turbine generator system, its characterized in that includes the wind generating set controller that corresponds with each wind turbine generator system, and each wind generating set controller interconnects to realize the information interaction between each wind generating set controller, be used for: each wind generating set controller acquires the self environmental information of the corresponding wind generating set in real time, wherein the environmental information is information influencing the faults of the wind generating set; when the wind generating set controller cannot acquire certain environmental information of the wind generating set corresponding to the wind generating set controller, acquiring environmental information corresponding to wind generating sets of other wind generating set controllers interconnected with the wind generating set controller; and the wind generating set controller determines a control strategy of the wind generating set corresponding to the wind generating set according to the acquired environment information corresponding to the wind generating sets of other wind generating set controllers, and controls the wind generating set corresponding to the wind generating set according to the determined control strategy.

5. The wind turbine generator control system of claim 4, wherein the wind turbine generator controllers are interconnected using a POWERLINK ring network.

6. The wind turbine generator system of claim 5, wherein each wind turbine generator system controller is connected to two power link modules, one of the power link modules being communicatively connected to one of the power link modules connected to the previous wind turbine generator system controller, and the other of the power link modules being communicatively connected to one of the power link modules connected to the next wind turbine generator system controller.

7. The wind turbine generator control system of claim 4, further comprising a central controller, wherein the central controller is interconnected with the wind turbine generator controllers via a POWERLINK ring network.

8. The control system of a wind turbine according to any of claims 5 to 7, wherein the POWERLINK ring network is a POWERLINK optical fiber ring network.

Technical Field

The invention relates to a control method and a control system of a wind turbine generator, and belongs to the technical field of fan power generation.

Background

With the increasing environmental pollution and energy shortage, the wind energy is more and more valued by people as a green renewable energy source, and countries in the world compete to research and develop wind power generation technology. In a wind power plant, wind turbines are distributed in the wind power plant at certain intervals, and wind resources, terrain environments and the like of the wind turbines have certain similarity and difference. At present, the units of the wind power plant are influenced by the mechanical characteristics of the units, and the control of most of the units is independent. In the control process of the units, the controller of each unit needs to acquire external environment information such as gust, turbulence, temperature and the like corresponding to the unit, and then determines a control strategy corresponding to the unit. However, when the controller of the unit cannot acquire certain external environment information such as temperature or the acquired external environment information is wrong, for example, the anemorumbometer fails, the control strategy of the unit is inaccurate, so that a light person may cause unexpected shutdown of the unit, and a heavy person may face a unit accident.

Disclosure of Invention

The invention aims to provide a control method and a control system of a wind turbine generator, which are used for solving the problem of safety accidents caused by inaccurate control strategy of a fan due to the fact that correct external environment information cannot be obtained.

In order to solve the technical problem, the invention provides a control method of a wind turbine generator, which comprises the following steps:

interconnecting the wind generating set controllers to realize information interaction among the wind generating set controllers;

each wind generating set controller acquires the self environmental information of the corresponding wind generating set in real time, wherein the environmental information is information influencing the faults of the wind generating set;

when the wind generating set controller cannot acquire certain environmental information of the wind generating set corresponding to the wind generating set controller, acquiring environmental information corresponding to wind generating sets of other wind generating set controllers interconnected with the wind generating set controller;

and the wind generating set controller determines a control strategy of the wind generating set corresponding to the wind generating set according to the acquired environment information corresponding to the wind generating sets of other wind generating set controllers, and controls the wind generating set corresponding to the wind generating set according to the determined control strategy.

The invention has the beneficial effects that: in the control process of the wind turbine generator, when certain environmental information of the wind turbine generator cannot be acquired, the wind turbine generator controller of the wind turbine generator acquires the environmental information corresponding to other wind turbine generators from other wind turbine generator controllers, and because the environmental information of the wind turbine generator is the same as or similar to the environmental information of other wind turbine generators, the control strategy of the wind turbine generator can be determined according to the acquired environmental information of other wind turbine generators, so that the phenomenon that the control strategy of the wind turbine generator is inaccurate due to the fact that certain environmental information is lost is avoided, the machine halt or the faults of the wind turbine generator are avoided, and the normal operation of the wind turbine generator is effectively guaranteed.

As a further improvement of the method, in order to quickly acquire the environmental information of other wind turbine generators so as to realize information sharing, the controllers of the wind turbine generators are interconnected by using a POWERLINK looped network.

As a further improvement of the method, the environmental information is shared among the different wind turbines, including gusts, turbulence, outside-nacelle temperature, air density and icing data.

In order to solve the above technical problem, the present invention further provides a control system for wind turbine generators, including wind turbine generator controller corresponding to each wind turbine generator, each wind turbine generator controller being interconnected to realize information interaction between the wind turbine generator controllers, for: each wind generating set controller acquires the self environmental information of the corresponding wind generating set in real time, wherein the environmental information is information influencing the faults of the wind generating set; when the wind generating set controller cannot acquire certain environmental information of the wind generating set corresponding to the wind generating set controller, acquiring environmental information corresponding to wind generating sets of other wind generating set controllers interconnected with the wind generating set controller; and the wind generating set controller determines a control strategy of the wind generating set corresponding to the wind generating set according to the acquired environment information corresponding to the wind generating sets of other wind generating set controllers, and controls the wind generating set corresponding to the wind generating set according to the determined control strategy.

The invention has the beneficial effects that: in the control process of the wind turbine generator, when certain environmental information of the wind turbine generator cannot be acquired, the wind turbine generator controller of the wind turbine generator acquires the environmental information corresponding to other wind turbine generators from other wind turbine generator controllers, and because the environmental information of the wind turbine generator is the same as or similar to the environmental information of other wind turbine generators, the control strategy of the wind turbine generator can be determined according to the acquired environmental information of other wind turbine generators, so that the phenomenon that the control strategy of the wind turbine generator is inaccurate due to the fact that certain environmental information is lost is avoided, the machine halt or the faults of the wind turbine generator are avoided, and the normal operation of the wind turbine generator is effectively guaranteed.

As a further improvement of the system, in order to quickly acquire environmental information of other wind turbine generators so as to realize information sharing, controllers of the wind turbine generators are interconnected by a POWERLINK looped network.

As a further improvement of the system, in order to construct a POWERLINK ring network to improve the data transmission speed, each wind generating set controller is connected with two POWERLINK modules, one POWERLINK module is in communication connection with one POWERLINK module connected with the previous wind generating set controller, and the other POWERLINK module is in communication connection with one POWERLINK module connected with the next wind generating set controller.

As a further improvement of the system, in order to improve the data transmission speed, the system also comprises a central controller, and the central controller and each wind generating set controller are interconnected by adopting a POWERLINK looped network.

As a further improvement of the system, in order to realize coexistence of the POWERLINK ring network and the existing optical fiber ring network, the POWERLINK ring network is a POWERLINK optical fiber ring network.

Drawings

FIG. 1 is a block diagram of a control system for a wind turbine according to the present invention;

fig. 2 is a topology diagram of the POWERLINK optical ring network 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 and specific embodiments.

The embodiment of the control system of the wind turbine generator comprises the following steps:

the embodiment provides a control system of wind generation sets, which interconnects wind generation set controllers corresponding to the wind generation sets to realize information sharing among the wind generation sets. When certain environmental information of the wind turbine generator cannot be acquired, corresponding environmental information of other wind turbine generators is acquired in time to determine the control strategy of the wind turbine generator, so that the fault rate of each wind turbine generator in independent control is greatly reduced, the effective operation time of the wind turbine generator is improved, and the adverse effects of loss of generated energy, impact on a power grid, damage to the wind turbine generator and the like caused by shutdown of the wind turbine generator due to external factors are avoided.

As shown in fig. 1, the control system of the wind turbine generator includes a central controller and wind turbine generator controllers corresponding to the wind turbine generators, and the central controller and the wind turbine generator controllers are interconnected through a POWERLINK optical fiber ring network, so that information interaction between the wind turbine generator controllers can be realized, and data sharing is realized.

As shown in fig. 2, the POWERLINK interface expansion is performed on the wind turbine generator system controllers corresponding to each wind turbine generator system, at least two or more POWERLINK interfaces and one network port are required to be expanded, each wind turbine generator system controller is further provided with two sets of optical fiber modules and POWERLINK modules, and thus each wind turbine generator system controller is connected with two sets of optical fiber modules and POWERLINK modules. The central controller is provided with two POWERLINK ports and two sets of fiber optic modules and POWERLINK modules, such that the central controller is also connected with two sets of fiber optic modules and POWERLINK modules. In fig. 2, the fiber optic modules to which the central controller and the wind turbine generator are connected by fiber optics (dashed lines), and the POWERLINK modules to which the central controller and the wind turbine generator are connected by POWERLINK (solid lines). In the embodiment, the model of the wind generating set controller is X20CP3586, and the X20CP3586 can be expanded into 3 POWERLINK interfaces; the central controller is model APC910, which itself has two POWERLINK ports.

One POWERLINK module connected with each wind generating set controller is in communication connection with one POWERLINK module connected with the previous wind generating set controller or the central controller, and the other POWERLINK module is in communication connection with one POWERLINK module connected with the next wind generating set controller or the central controller, so that a POWERLINK ring network is formed. And one optical fiber module connected with each wind generating set controller is in communication connection with one optical fiber module connected with the front wind generating set controller or the central controller, and the other optical fiber module is in communication connection with one optical fiber module connected with the rear wind generating set controller or the central controller, so that an optical fiber ring network is formed. As shown in fig. 1, the dashed line represents the POWERLINK ring network, and the solid line represents the optical fiber ring network.

The POWERLINK optical fiber ring network is a relatively independent system. It should be noted that, by arranging the central controller in the POWERLINK optical fiber ring network, the background can acquire control information of corresponding wind turbine generators in each wind turbine generator, and the later-stage function expansion is facilitated. For example, after the POWERLINK optical fiber ring network test passes, an AGC (automatic generation control) device and an AVC (automatic voltage control) device which are mounted on the existing wind field ring network and used for power grid dispatching can be separated, so that the central controller integrates AGC and AVC functions, and at the moment, the POWERLINK optical fiber ring network can meet the quick response requirement of a wind turbine generator set for supporting the frequency change of a power grid and realize the quick data sharing among the wind turbine generator sets. Therefore, as another embodiment, the power link optical ring network may not be provided with the central controller.

In addition, the POWERLINK optical fiber ring network is established on the basis of an optical fiber ring network framework of the wind power plant, is a network with high reliability and high response speed, and realizes data sharing among wind turbines. As another embodiment, only the POWERLINK ring network may be constructed between the central controller and each wind generating set controller. Certainly, on the premise of ensuring that information interaction between the wind turbine generators is rapid and effective, namely, the response time for acquiring the environmental information of other wind turbine generators is shorter than the cycle period controlled by the wind turbine generators, the POWERLINK ring network can also be replaced by other types of ring networks in the prior art.

Through the POWERLINK optical fiber ring network, the control system of the wind turbine generator can realize a control method of the wind turbine generator, and the steps are as follows:

(1) and each wind generating set controller acquires the self environmental information of the corresponding wind generating set in real time.

The environmental information is information influencing faults of the wind turbine generator and comprises gust, turbulence, temperature outside an engine room, air density and icing data, the gust and the turbulence can cause the generator to stop due to overlarge vibration, and the sensor faults such as temperature, air density and icing can cause the generator to stop.

(2) And when the wind generating set controller cannot acquire certain environmental information of the wind generating set corresponding to the wind generating set controller, acquiring the environmental information corresponding to the wind generating sets of other wind generating set controllers interconnected with the wind generating set controller.

In the wind power plant, the environmental information of some wind turbines is the same or similar. Therefore, when some environmental information of a certain wind turbine generator cannot be acquired, for example, a temperature sensor of a certain wind turbine generator fails, and a wind turbine generator controller corresponding to the wind turbine generator cannot acquire the temperature corresponding to the wind turbine generator, at this time, the wind turbine generator controller can acquire the environmental information of other wind turbine generators which are the same as or similar to the environmental information of the wind turbine generator through the POWERLINK optical fiber ring network, for example, the environmental information corresponding to other wind turbine generators adjacent to the wind turbine generator can be acquired, and the acquired environmental information is used as the own environmental information.

(3) And the wind generating set controller determines a control strategy of the wind generating set corresponding to the wind generating set according to the acquired environment information corresponding to the wind generating sets of other wind generating set controllers, and controls the wind generating set corresponding to the wind generating set according to the determined control strategy.

The wind generating set controller utilizes the acquired environmental information corresponding to other wind generating sets which are the same as or similar to the environmental information of the wind generating set, and formulates a control strategy of the wind generating set, so that the phenomenon that the control strategy of the wind generating set is inaccurate due to the fact that certain environmental information is lost is avoided, the machine set is prevented from being stopped or broken down, and the normal operation of the wind generating set is effectively guaranteed. Because the process that each wind generating set controller formulates the control strategy of the corresponding wind generating set according to the environmental information belongs to the prior art, the process is not repeated herein.

The embodiment of the control method of the wind turbine generator comprises the following steps:

the present embodiment provides a control method for a wind turbine generator, which is described in detail in the above embodiments of a control system for a wind turbine generator and is not described herein again.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present application, various changes, modifications or equivalents of the embodiments of the present application can be made, and these changes, modifications or equivalents are within the protection scope of the claims of the present invention.