A method for data interconnection and interoperability and group security control of a wind power generation unit

Abstract

A method for data interconnection and intercommunication and group security control of a wind turbine generator set. An edge processor is installed on each wind turbine generator set. The edge processor can communicate quickly with the local PLC through the Socket communication protocol, and at the same time can provide a Soap protocol call port for other edge processors to call. Through data interconnection and intercommunication with the operating conditions of adjacent units and the flagship unit, the information of the sensors of the units within the group is quickly shared; through the data of the interconnected units, the data validity of the local unit is evaluated, and the extreme wind conditions can be predicted in advance to protect the unit and improve the unit safety; at the same time, without affecting the unit safety, the sensor information of the interconnected wind turbine generator sets can be used to replace the faulty sensors of the local unit to achieve fault ride-through and improve the power generation of the wind turbine generator set.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and particularly relates to a method for data interconnection and intercommunication of wind turbine generators and group safety control thereof. Background Art

[0002] With the continuous improvement of the intelligence and digitization levels of wind turbine generators, it has become increasingly important to enable wind turbine generators to better realize self-perception functions.

[0003] Currently, in wind farms, communication with wind turbine generators is mainly carried out through the SCADA system. Most of this communication mode is second-level data communication, with a low data transmission speed, and there are cases of data loss. Implementing data sharing among units is relatively complex. Wind turbine generators communicate with a data sharing platform, which is greatly affected by the ring network communication of wind turbine units and cannot be grouped flexibly. Since the wind conditions in the entire wind farm vary greatly, the data shared by the sharing platform has low value and low efficiency for this unit. At the same time, information between units in this mode cannot be shared, and it is difficult to implement intelligent control functions such as evaluation of the effectiveness of unit data, fault ride-through, and unit safety control. Summary of the Invention

[0004] Aiming at the defects in the prior art, the present invention provides a method for data interconnection and intercommunication of wind turbine generators and group safety control thereof, so as to at least solve the technical problem that in the existing communication mode of wind farms, information between units cannot be shared and it is difficult to evaluate the effectiveness of unit data.

[0005] In order to achieve the above object, the present invention is realized through the following technical solutions:

[0006] A method for data interconnection and intercommunication of wind turbine generators and group safety control thereof includes the following steps:

[0007] Based on the environmental information of a wind farm group, dynamically group the wind turbine generators in the group;

[0008] Designate the flagship units in each group, and at the same time record the position coordinate information of each wind turbine generator in the group;

[0009] Mutually call the unit environmental information collected by each wind turbine generator in the group;

[0010] Designate a target unit, and compare the unit environmental information collected by the target unit with the unit environmental information collected by the flagship unit and the adjacent units of the target unit respectively to determine the effectiveness of the unit environmental information collected by the target unit.

[0011] Optionally, the mutual call of the unit environmental information and its position coordinate information collected by each wind turbine generator in the group includes:

[0012] Edge processors are installed for all wind turbines in the group respectively, and the edge processors call the unit environment information collected by each wind turbine in the group through an information transmission protocol.

[0013] Optionally, the specified target unit includes:

[0014] When the ratio of the unit environment information collected by a certain wind turbine in the group to the unit environment information collected by the same wind turbine in the previous time exceeds the set range value, this wind turbine is marked as the target unit.

[0015] Optionally, comparing the unit environment information collected by the target unit with the unit environment information collected by the flagship unit and the adjacent units of the target unit respectively includes the following judgments:

[0016] In the same time period, if the absolute value of the difference between the average value of the environment information collected by the target unit and the average value of the environment information collected by the flagship unit, and / or, the absolute value of the difference between the average value of the environment information collected by the target unit and the average value of the environment information collected by the adjacent unit is greater than the warning value, it is determined that the unit environment information collected by the target unit is invalid; or

[0017] In the same time period, if the absolute value of the difference between the average value of the environment information collected by the target unit and the average value of the environment information collected by the flagship unit, and the absolute value of the difference between the average value of the environment information collected by the target unit and the average value of the environment information collected by the adjacent unit are both less than the warning value, it is determined that the unit environment information collected by the target unit is valid.

[0018] Optionally, when it is determined that the unit environment information collected by the target unit is valid, it is further determined whether the target unit is in an extreme wind condition based on the unit environment information collected by the target unit. If the target unit is in an extreme wind condition, all wind turbines in the group are controlled to execute a storm shutdown or an extreme wind condition safety protection strategy.

[0019] Optionally, when it is determined that the unit environment information collected by the target unit is invalid, comparing the unit environment information collected by the flagship unit and the adjacent units of the target unit includes:

[0020] In the same time period, if the absolute value of the difference between the average value of the environment information collected by the flagship unit and the average value of the environment information collected by the adjacent unit is less than the set value, the target unit determines its own control strategy based on the environment information collected by the adjacent unit;

[0021] In the same time period, if the absolute value of the difference between the average value of the environment information collected by the flagship unit and the average value of the environment information collected by the adjacent unit is greater than the set value, the target unit shuts down due to a fault.

[0022] Optionally, within a preset time after the target unit determines its own control strategy based on the environmental information collected by the adjacent units, the target unit continues to collect the unit environmental information, and compares the continuously collected unit environmental information with the unit environmental information collected by the flagship unit and the adjacent units of the target unit respectively, so as to secondarily determine the effectiveness of the unit environmental information collected by the target unit. If the result of the secondary determination is that the unit environmental information collected by the target unit is valid, the target unit determines its own control strategy based on the environmental information collected by itself.

[0023] As can be seen from the above technical solutions, the beneficial effects of the present invention are:

[0024] A method for data interconnection and group safety control of a wind turbine generator set provided by the present invention realizes rapid sharing of information of sensors of units within a group through data interconnection with the operating conditions of adjacent units and the flagship unit; evaluates the data validity of this unit through the data of the interconnected units, and can predict extreme wind conditions in advance to protect the unit and improve the safety of the unit; at the same time, without affecting the safety of the unit, it can use the sensor information of the interconnected wind turbine generator sets to replace the faulty sensors of this unit to achieve fault ride-through and improve the power generation of the wind turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0026] Figure 1 It is a flowchart of a method for data interconnection and group safety control of a wind turbine generator set. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will describe in detail the embodiments of the technical solutions of the present invention with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0028] Please refer to Figure 1 , this embodiment provides a method for data interconnection and group safety control of a wind turbine generator set, including the following steps:

[0029] S1. The field group control platform dynamically groups the wind turbine generator sets in the field group based on the environmental information of the wind farm group (such as the current wind speed, wind direction, wake flow, etc.).

[0030] S2. Designate the flagship units within each group. The flagship units are installed with more sensors (such as lidar for wind measurement, rain gauges, etc.), and at the same time record the position coordinate information of each wind turbine within the group;

[0031] S3. Mutually call the unit environment information collected by each wind turbine within the group (including but not limited to the wind speed, wind direction, ambient temperature, and air density of the current wind turbine);

[0032] Specifically, edge processors are installed on all wind turbines within the group respectively. The edge processors mutually call the unit environment information collected by each wind turbine within the group through an information transmission protocol. For example, the edge processor can communicate quickly with the local PLC through the Socket communication protocol, and at the same time can provide a Soap protocol call port for other edge processors to call;

[0033] S4. Designate a target unit, and compare the unit environment information collected by the target unit with the unit environment information collected by the flagship unit and the adjacent units of the target unit respectively to determine the validity of the unit environment information collected by the target unit.

[0034] Among them, the target unit refers to - when the ratio of the unit environment information currently collected by a certain wind turbine within the group to the unit environment information collected by the same wind turbine in the previous time exceeds the set range value, and the unit environment information currently collected by this wind turbine is not over-limit (if the unit environment information is over-limit, it indicates that the acquisition sensor of the corresponding environment information has failed), then mark this wind turbine as the target unit. Since the unit environment information currently collected by the target unit is not over-limit, with the existing technology, it is impossible to evaluate whether it is a sensor failure or an external environment sudden change. Therefore, it is necessary to evaluate the validity of the unit environment information it collects. The determination of the adjacent units of the target unit depends on the position coordinate information of each wind turbine within the group.

[0035] Specifically, the comparison of the unit environment information collected by the target unit with the unit environment information collected by the flagship unit and the adjacent units of the target unit respectively includes the following judgments:

[0036] Within the same time period, if the absolute value of the difference between the average value of the environment information collected by the target unit and the average value of the environment information collected by the flagship unit, and / or, the absolute value of the difference between the average value of the environment information collected by the target unit and the average value of the environment information collected by the adjacent unit is greater than the warning value, then it is determined that the unit environment information collected by the target unit is invalid, that is, the corresponding sensor fails. Obviously, an alarm prompt needs to be issued while determining invalidity; or

[0037] Within the same period, if the absolute value of the difference between the average value of the environmental information collected by the target unit and the average value of the environmental information collected by the flagship unit, and the absolute value of the difference between the average value of the environmental information collected by the target unit and the average value of the environmental information collected by the adjacent unit are both less than the warning value, it is determined that the environmental information of the target unit is valid, that is, there is a sudden change in the external environment of the wind farm.

[0038] As a further improvement to the above determination, when it is determined that the environmental information of the target unit is valid, it is further determined whether the target unit is in an extreme wind condition based on the environmental information collected by the target unit (the identification of extreme wind conditions uses existing technologies such as CN105654239B). If the target unit is in an extreme wind condition, all wind turbines in the group are controlled to execute storm shutdown or extreme wind condition safety protection strategies, that is, if a normally operating unit in the group discovers an extreme wind condition in advance, the remaining units in the group can enter the protection state in advance; when it is determined that the environmental information of the target unit is invalid, a comparison is made based on the environmental information collected by the flagship unit and the adjacent unit of the target unit, including: within the same period, if the absolute value of the difference between the average value of the environmental information collected by the flagship unit and the average value of the environmental information collected by the adjacent unit is less than the set value, it indicates that the environmental information of the wind turbines in the same group is roughly similar, and the target unit determines its own control strategy based on the environmental information collected by the adjacent unit, that is, the target unit continues to generate electricity without shutting down; within the same period, if the absolute value of the difference between the average value of the environmental information collected by the flagship unit and the average value of the environmental information collected by the adjacent unit is greater than the set value, it indicates that the external environment of the wind farm is complex and changeable, and it is difficult to ensure that the environmental state of the adjacent unit is close to the actual environmental state of the target unit. To ensure the safe operation of the target unit, the target unit shuts down due to a fault and waits for technicians to repair and troubleshoot the fault.

[0039] As a further improvement to the above solution, within a preset time after the target unit determines its own control strategy based on the environmental information collected by the adjacent unit, the target unit continues to collect the environmental information of the unit, and compares the continuously collected environmental information of the unit with the environmental information collected by the flagship unit and the adjacent unit of the target unit respectively to re-determine the validity of the environmental information collected by the target unit. If the re-determination result shows that the environmental information collected by the target unit is valid, the target unit determines its own control strategy based on the environmental information it collects. By performing a re-determination, the occurrence of false alarms due to faults is minimized, such as occasional sensor failures that can self-recover. Performing a re-determination is beneficial to saving maintenance time and increasing the power generation operation duration.

[0040] A method for data interconnection and group security control of a wind power generation unit provided by the present invention realizes rapid sharing of information of sensors of units within a group by performing data interconnection with the operating conditions of adjacent units and a flagship unit; evaluates the data validity of the present unit through the data of the interconnected units, thereby effectively increasing the power generation operation time of the wind turbine, improving the power generation of the unit, and being able to predict extreme wind conditions in advance to protect the unit and improve its safety; at the same time, without affecting the safety of the unit, it can use the sensor information of the interconnected wind turbines to replace the faulty sensors of the present unit to achieve fault ride-through and improve the power generation of the wind turbine.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A method for data interconnection and interoperability and group security control of a wind power generation unit, characterized in that, It includes the following steps: Based on the environmental information of the wind farm group, dynamically group the wind turbines in the group; Designate the flagship turbines in each group, and record the position coordinate information of each wind turbine in the group; Mutually call the turbine environmental information collected by each wind turbine in the group; Designate a target turbine, and compare the turbine environmental information collected by the target turbine with the turbine environmental information collected by the flagship turbine and the adjacent turbines of the target turbine respectively to determine the validity of the turbine environmental information collected by the target turbine; When it is determined that the turbine environmental information collected by the target turbine is invalid, compare the turbine environmental information collected by the flagship turbine and the adjacent turbines of the target turbine, including: within the same time period, if the absolute value of the difference between the average value of the environmental information collected by the flagship turbine and the average value of the environmental information collected by the adjacent turbine is less than the set value, the target turbine determines its own control strategy based on the environmental information collected by the adjacent turbine, that is, the target turbine continues to generate electricity without shutting down; Within a preset time after the target turbine determines its own control strategy based on the environmental information collected by the adjacent turbine, the target turbine continues to collect turbine environmental information, and compare the continuously collected turbine environmental information with the turbine environmental information collected by the flagship turbine and the adjacent turbines of the target turbine respectively to re-determine the validity of the turbine environmental information collected by the target turbine. If the re-determination result shows that the turbine environmental information collected by the target turbine is valid, the target turbine determines its own control strategy based on the environmental information collected by itself.

2. A method for data interconnection and interoperability and group safety control of a wind turbine generator set according to claim 1, characterized in that, The mutual call of the turbine environmental information and its position coordinate information collected by each wind turbine in the group includes: Install edge processors on all wind turbines in the group, and the edge processors mutually call the turbine environmental information collected by each wind turbine in the group through information transmission protocols.

3. A method for data interconnection and group security control of a wind power generation unit, according to claim 1, characterized in that The designation of the target turbine includes: When the ratio of the turbine environmental information collected by a certain wind turbine in the group to the turbine environmental information collected by the wind turbine in the previous time exceeds the set range value, mark the wind turbine as the target turbine.

4. A method for data interconnection and interoperability and group security control of a wind power generation unit, according to any one of claims 1 to 3, characterized in that, The comparison of the turbine environmental information collected by the target turbine with the turbine environmental information collected by the flagship turbine and the adjacent turbines of the target turbine respectively includes the following determinations: Within the same time period, if the absolute value of the difference between the average value of the environmental information collected by the target turbine and the average value of the environmental information collected by the flagship turbine, and / or, the absolute value of the difference between the average value of the environmental information collected by the target turbine and the average value of the environmental information collected by the adjacent turbine is greater than the warning value, it is determined that the turbine environmental information collected by the target turbine is invalid; or Within the same time period, if the absolute value of the difference between the average value of the environmental information collected by the target turbine and the average value of the environmental information collected by the flagship turbine, and the absolute value of the difference between the average value of the environmental information collected by the target turbine and the average value of the environmental information collected by the adjacent turbine are both less than the warning value, it is determined that the turbine environmental information collected by the target turbine is valid.

5. A method for data interconnection and interoperability and group security control of a wind power generation unit, characterized in that, When it is determined that the unit environment information collected by the target unit is valid, it is continued to determine whether the target unit is in an extreme wind condition based on the unit environment information collected by the target unit. If the target unit is in an extreme wind condition, all wind turbines in the group are controlled to perform storm shutdown or extreme wind condition safety protection strategies.

6. A method for data interconnection and interoperability and group security control of a wind power generation unit, characterized in that, When it is determined that the unit environment information collected by the target unit is invalid, a comparison is made based on the unit environment information collected by the flagship unit and the adjacent units of the target unit. It also includes: Within the same time period, if the absolute value of the difference between the average value of the environment information collected by the flagship unit and the average value of the environment information collected by the adjacent units is greater than the set value, the target unit shuts down due to a fault.

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