Wind power generation lightning protection monitoring system

Abstract

The invention relates to the technical field of lightning protection monitoring, and discloses a wind power generation lightning protection monitoring system comprising a system module assembly which comprises a data acquisition module, a preprocessing module, a classification module, a training module, a data transmission module, an analysis module and a defense module. The data acquisition module is used for acquiring lightning stroke process images, historical meteorological data, lightning stroke flow data and tower footing SPD data with lightning stroke phenomena around the wind generating set and intercepting images of the whole lightning stroke, the data acquisition module is connected with the preprocessing module, and the preprocessing module is connected with the classification module. According to the invention, data monitoring in the later lightning stroke period of the wind generating set can be realized, and the early lightning stroke condition of the wind generating set can be predicted, so that lightning protection measures can be timely enhanced when the wind generating set cannot bear lightning stroke, the lightning protection effect of the wind generating set is improved, and the damage probability of the wind generating set is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of lightning protection monitoring, and in particular to a wind power generation lightning protection monitoring system. Background Art

[0002] Wind power generation refers to the conversion of wind's kinetic energy into electrical energy. Using wind power to generate electricity is very environmentally friendly and has huge wind energy reserves, so it is increasingly valued by countries around the world.

[0003] Lightning is a strong discharge phenomenon in nature. In modern life, lightning still threatens forests, ignites pyrotechnics, causes loss of human life and property, and has a significant impact on many sectors of national defense and the national economy, such as aviation, aerospace, communications, electricity, and construction.

[0004] The current lightning protection detection methods and equipment in the wind power field are specifically designed for wind turbines, and cannot provide efficient fault warnings and reduce the probability of damage to wind turbines, which reduces the practical effect of the system. Therefore, a wind power generation lightning protection monitoring system is proposed. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a wind power generation lightning protection monitoring system, which solves the problem that many systems cannot efficiently perform fault warnings and cannot reduce the probability of damage to wind turbines, thereby reducing the practical effect of the system.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A wind power generation lightning protection monitoring system includes a system module assembly, the system module assembly includes a data acquisition module, a preprocessing module, a classification module, a training module, a data transmission module, an analysis module and a defense module, the data acquisition module collects lightning process images with lightning strike phenomena around a wind power generation unit, historical meteorological data, lightning flow data and tower base SPD data, and intercepts the image of the entire lightning, the data acquisition module is connected to the preprocessing module, and the preprocessing module is connected to the classification module, the classification module classifies the intercepted lightning images, the pre- and mid-term historical meteorological data and the lightning flow data of the wind power generation unit by date, the defense module includes a cleaning unit, a lightning protection surge module detection unit, a lightning protection module The installation unit is used, and the cleaning unit cleans the oil stains on the lightning protection grounding carbon brush from the unit hub to the cabin connection plate and the lightning protection grounding carbon brush from the cabin to the tower. The data classified by the classification module is input into the input BP application network in the training module for training to obtain a training model. The information collected by the data acquisition module also includes site information, equipment information, network information, and grounding resistance information. The data collected by the data acquisition module is transmitted to the remote monitoring platform through the data transmission module. The monitoring platform includes a monitoring module, which is connected to the training module and the analysis module. The analysis module is connected to the alarm module, and the analysis module compares the information monitored by the monitoring module with the training model of the training module, and an alarm is issued if the threshold is exceeded.

[0010] Furthermore, the historical meteorological data is the early and mid-term historical meteorological data of lightning strikes around the wind turbine generator set, wherein the early and mid-term historical meteorological data includes the historical meteorological data of the previous day with the lightning strike and the historical meteorological data of the day with the lightning strike.

[0011] On the basis of the above scheme, the lightning strike flow data are the lightning strike flow data of the blades of the wind turbine generator set, the lightning strike flow data of the nacelle and the lightning strike flow data of the tower base.

[0012] As a further solution of the present invention, the preprocessing module preprocesses the early and mid-term historical meteorological data including data cleaning, data integration, data transformation and data reduction.

[0013] Furthermore, when the analysis module performs comparison, if the detected information data does not exceed the subordinate data threshold in the training model, no alarm will be issued. If it exceeds the threshold of historical meteorological data in the previous and mid-term, a yellow alarm will be issued; if it exceeds the lightning current threshold, a red alarm will be issued.

[0014] Based on the above scheme, the system module assembly includes a storage module. When collecting data, if the value of the collected data information remains unchanged, only a corresponding entry is stored. If the value of the collected data information changes, the changed value continues to be stored.

[0015] Furthermore, the lightning protection surge module detection unit will remove the lightning protection surge module of the unit where the lightning failure occurs and entrust a professional organization to conduct a lightning protection function test. If there is a problem with the test result, the lightning protection surge modules of other units will be replaced in batches.

[0016] As a further solution of the present invention, the lightning protection module installation unit installs a lightning protection module on the CAN communication line of the pitch inverter, and the steps are as follows:

[0017] ①Disconnect the power supply;

[0018] ②Open the pitch control cabinet and remove the two fixing clips on the terminal block;

[0019] ③Install the 5.2V lightning protection module at the location removed in the previous step;

[0020] ④ Remove the CAN communication line marked with IN from the pitch inverter, rearrange the communication line in the wire slot, and connect it to the newly added 5.2V lightning protection module input terminal;

[0021] ⑤ Take a new 74cm long CAN communication line, strip the terminals at both ends, and use 0.75mm 2 Crimp the wire nose, connect one end to the output terminal of the newly added 5.2V lightning protection module, arrange it through the wire trough, install the variable pitch inverter plug on the other end, and connect it to the X4 port of the variable pitch inverter. Use a utility knife to pull out the shielding layer of the CAN communication line, fasten it with the spring clip of the variable pitch inverter, and tie the communication line with a cable tie.

[0022] The beneficial effects of the present invention are:

[0023] 1. In the present invention, the cleaning unit cleans the oil stains on the lightning protection grounding carbon brush from the unit hub to the nacelle connection plate and the lightning protection grounding carbon brush from the nacelle to the tower, so as to avoid the unit's large transition resistance, resulting in poor lightning discharge effect and damage to the equipment.

[0024] 2. In the present invention, the preprocessing module preprocesses the early and mid-term historical meteorological data including data cleaning, data integration, data transformation and data reduction, eliminates redundant and missing historical meteorological data, and improves data authenticity and practical efficiency.

[0025] 3. The present invention can not only realize the data monitoring of the wind turbine generator set in the later stage of lightning strike, but also predict the situation of the wind turbine generator set in the early stage of lightning strike, so as to timely strengthen the lightning protection measures when the wind turbine generator set cannot withstand the lightning strike, so as to improve the lightning protection effect of the wind turbine generator set and reduce the probability of damage to the wind turbine generator set.

[0026] 4. In the present invention, it can be ensured that only one piece of normal data is stored when the value remains unchanged, while in the case of an abnormality, each piece of data is actually stored as needed, which not only saves storage space but also facilitates the processing of abnormal data.

[0027] 5. In the present invention, the setting of the lightning protection module can fundamentally solve the problem of lightning damage to hub cabinet equipment such as pitch converters, and can effectively protect against lightning, thereby realizing the precise, professional and standardized management of safety hazards in the blade lightning protection system, thereby continuously improving the efficiency of production safety management and improving the availability of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention provides a schematic diagram of the system framework structure of a wind power generation lightning protection monitoring system. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. It should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0030] Example 1

[0031] Reference Figure 1A wind power generation lightning protection monitoring system includes a system module assembly, which includes a data acquisition module, a preprocessing module, a classification module, a training module, a data transmission module, an analysis module and a defense module. The data acquisition module collects lightning process images with lightning strike phenomena around wind turbine generator sets, historical meteorological data, lightning flow data and tower base SPD data, and intercepts the image of the entire lightning. The data acquisition module is connected to the preprocessing module, and the preprocessing module is connected to the classification module. The classification module classifies the intercepted lightning images, the previous and middle historical meteorological data and the lightning flow data of the wind turbine generator set by date, so that the intercepted lightning images, the previous and middle historical meteorological data and the lightning flow data of the generator set correspond to each other. The defense module includes a cleaning unit, a lightning protection surge module detection unit, The lightning protection module is equipped with a unit, and the cleaning unit cleans the oil stains on the lightning protection grounding carbon brush from the unit hub to the nacelle connection plate, and the oil stains on the lightning protection grounding carbon brush from the nacelle to the tower, so as to avoid the unit's large transition resistance, resulting in poor lightning discharge effect and damage to the equipment. The data classified by the classification module is input into the input BP application network in the training module for training to obtain a training model. The information collected by the data acquisition module also includes site information, equipment information, network information, and grounding resistance information. The data collected by the data acquisition module is transmitted to the remote monitoring platform through the data transmission module. The monitoring platform includes a monitoring module, which is connected to the training module and the analysis module. The analysis module is connected to the alarm module, and the analysis module compares the information monitored by the monitoring module with the training model of the training module, and an alarm is issued if the threshold is exceeded.

[0032] In the present invention, the historical meteorological data are the pre- and mid-term historical meteorological data with lightning strikes around the wind turbine generator set, wherein the pre- and mid-term historical meteorological data include the historical meteorological data of the previous day with the lightning strike and the historical meteorological data of the day with the lightning strike, and the lightning flow data include the lightning flow data of the blades of the wind turbine generator set, the lightning flow data of the nacelle and the lightning flow data of the tower base, and the preprocessing module preprocesses the pre- and mid-term historical meteorological data including data cleaning, data integration, data transformation and data reduction, eliminates redundant and missing historical meteorological data in the historical meteorological data, and improves data authenticity and practical efficiency, and when the analysis module compares, if the detected information data does not exceed the subordinate data threshold in the training model, no alarm is issued, if it exceeds the pre- and mid-term historical meteorological data threshold, a yellow alarm is issued, and if it exceeds the lightning current threshold, a red alarm is issued, which can not only realize the data monitoring of the wind turbine generator set in the later stage of lightning strike, but also can predict the situation of the wind turbine generator set in the early stage of lightning strike, so as to timely strengthen the lightning protection measures when the wind turbine generator set cannot withstand the lightning strike, so as to improve the lightning protection effect of the wind turbine generator set and reduce the probability of damage to the wind turbine generator set.

[0033] Example 2

[0034] Reference Figure 1A wind power generation lightning protection monitoring system includes a system module assembly, which includes a data acquisition module, a preprocessing module, a classification module, a training module, a data transmission module, an analysis module and a defense module. The data acquisition module collects lightning process images with lightning strike phenomena around wind turbine generator sets, historical meteorological data, lightning flow data and tower base SPD data, and intercepts the image of the entire lightning. The data acquisition module is connected to the preprocessing module, and the preprocessing module is connected to the classification module. The classification module classifies the intercepted lightning images, the previous and middle historical meteorological data and the lightning flow data of the wind turbine generator set by date, so that the intercepted lightning images, the previous and middle historical meteorological data and the lightning flow data of the generator set correspond to each other. The defense module includes a cleaning unit, a lightning protection surge module detection unit, The lightning protection module is equipped with a unit, and the cleaning unit cleans the oil stains on the lightning protection grounding carbon brush from the unit hub to the nacelle connection plate, and the oil stains on the lightning protection grounding carbon brush from the nacelle to the tower, so as to avoid the unit's large transition resistance, resulting in poor lightning discharge effect and damage to the equipment. The data classified by the classification module is input into the input BP application network in the training module for training to obtain a training model. The information collected by the data acquisition module also includes site information, equipment information, network information, and grounding resistance information. The data collected by the data acquisition module is transmitted to the remote monitoring platform through the data transmission module. The monitoring platform includes a monitoring module, which is connected to the training module and the analysis module. The analysis module is connected to the alarm module, and the analysis module compares the information monitored by the monitoring module with the training model of the training module, and an alarm is issued if the threshold is exceeded.

[0035] In the present invention, the historical meteorological data are the pre- and mid-term historical meteorological data with lightning strikes around the wind turbine generator set, wherein the pre- and mid-term historical meteorological data include the historical meteorological data of the previous day with the lightning strike and the historical meteorological data of the day with the lightning strike, and the lightning flow data include the lightning flow data of the blades of the wind turbine generator set, the lightning flow data of the nacelle and the lightning flow data of the tower base, and the preprocessing module preprocesses the pre- and mid-term historical meteorological data including data cleaning, data integration, data transformation and data reduction, eliminates redundant and missing historical meteorological data in the historical meteorological data, and improves data authenticity and practical efficiency, and when the analysis module compares, if the detected information data does not exceed the subordinate data threshold in the training model, no alarm is issued, if it exceeds the pre- and mid-term historical meteorological data threshold, a yellow alarm is issued, and if it exceeds the lightning current threshold, a red alarm is issued, which can not only realize the data monitoring of the wind turbine generator set in the later stage of lightning strike, but also can predict the situation of the wind turbine generator set in the early stage of lightning strike, so as to timely strengthen the lightning protection measures when the wind turbine generator set cannot withstand the lightning strike, so as to improve the lightning protection effect of the wind turbine generator set and reduce the probability of damage to the wind turbine generator set.

[0036] In particular, the system module assembly includes a storage module. When collecting data, if the value of the collected data information remains unchanged, only the corresponding one is stored. If the value of the collected data information changes, the changed value continues to be stored, which can ensure that only one normal data is stored when the value remains unchanged, and each data is actually stored as needed in the event of an abnormality. This not only saves storage space, but also facilitates the processing of abnormal data. The lightning protection surge module detection unit will remove the lightning protection surge module of the unit where a lightning failure occurs and entrust a professional organization to conduct a lightning protection function test. If there is a problem with the test result, the lightning protection surge modules of other units will be replaced in batches. The setting of the lightning protection module can fundamentally solve the problem of lightning damage to hub cabinet equipment such as pitch inverters, and can effectively protect against lightning, thereby realizing the precise, professional and standardized safety hazard management of the blade lightning protection system, thereby continuously improving the efficiency of production safety management and improving the equipment operation availability.

[0037] Lightning protection module installation unit Install a lightning protection module on the CAN communication line of the pitch inverter. The steps are as follows:

[0038] ①Disconnect the power supply;

[0039] ②Open the pitch control cabinet and remove the two fixing clips on the terminal block;

[0040] ③Install the 5.2V lightning protection module at the location removed in the previous step;

[0041] ④ Remove the CAN communication line marked with IN from the pitch inverter, rearrange the communication line in the wire slot, and connect it to the newly added 5.2V lightning protection module input terminal;

[0042] ⑤ Take a new 74cm long CAN communication line, strip the terminals at both ends, and use 0.75mm 2 Crimp the wire nose, connect one end to the output terminal of the newly added 5.2V lightning protection module, arrange it through the wire trough, install the variable pitch inverter plug on the other end, and connect it to the X4 port of the variable pitch inverter. Use a utility knife to pull out the shielding layer of the CAN communication line, fasten it with the spring clip of the variable pitch inverter, and tie the communication line with a cable tie.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wind power generation lightning protection monitoring system, comprising a system module assembly, characterized in that: The system module assembly includes a data acquisition module, a preprocessing module, a classification module, a training module, a data transmission module, an analysis module and a defense module. The data acquisition module collects lightning process images with lightning strike phenomena around the wind turbine generator set, historical meteorological data, lightning flow data and tower base SPD data, and intercepts the image of the entire lightning. The data acquisition module is connected to the preprocessing module, and the preprocessing module is connected to the classification module. The classification module classifies the intercepted lightning images, the early and mid-term historical meteorological data and the lightning flow data of the wind turbine generator set by date. The defense module includes a cleaning unit, a lightning protection surge module detection unit, and a lightning protection module installation unit. The cleaning unit The oil stains on the lightning protection grounding carbon brush from the unit hub to the nacelle connection plate and the oil stains on the lightning protection grounding carbon brush from the nacelle to the tower are cleaned, and the data classified by the classification module is input into the input BP application network in the training module for training to obtain a training model. The information collected by the data acquisition module also includes site information, equipment information, network information, and grounding resistance information. The data collected by the data acquisition module is transmitted to the remote monitoring platform through the data transmission module. The monitoring platform includes a monitoring module, which is connected to the training module and the analysis module. The analysis module is connected to the alarm module, and the analysis module compares the information monitored by the monitoring module with the training model of the training module, and an alarm is issued if the threshold is exceeded.

2. A wind power generation lightning protection monitoring system according to claim 1, characterized in that: The historical meteorological data are the early and mid-term historical meteorological data of lightning strikes around the wind turbine generator set, wherein the early and mid-term historical meteorological data include the historical meteorological data of the previous day with the lightning strike and the historical meteorological data of the day with the lightning strike.

3. A wind power generation lightning protection monitoring system according to claim 2, characterized in that: The lightning strike flow data include wind turbine blade lightning strike flow data, nacelle lightning strike flow data and tower base lightning strike flow data.

4. A wind power generation lightning protection monitoring system according to claim 3, characterized in that: The preprocessing module preprocesses the early and mid-term historical meteorological data including data cleaning, data integration, data transformation and data reduction.

5. A wind power generation lightning protection monitoring system according to claim 1, characterized in that: When the analysis module performs comparison, if the detected information data does not exceed the subordinate data threshold in the training model, no alarm will be issued. If it exceeds the threshold of historical meteorological data in the previous and mid-term, a yellow alarm will be issued. If it exceeds the lightning current threshold, a red alarm will be issued.

6. A wind power generation lightning protection monitoring system according to claim 1, characterized in that: The system module assembly includes a storage module. When collecting data, if the value of the collected data information remains unchanged, only a corresponding entry is stored. If the value of the collected data information changes, the changed value continues to be stored.

7. A wind power generation lightning protection monitoring system according to claim 1, characterized in that: The lightning protection surge module detection unit will remove the lightning protection surge module of the unit where a lightning failure occurs and entrust a professional organization to perform a lightning protection function test. If there is a problem with the test result, the lightning protection surge modules of other units will be replaced in batches.

8. A wind power generation lightning protection monitoring system according to claim 7, characterized in that: The lightning protection module installation unit installs a lightning protection module on the CAN communication line of the pitch inverter, and the steps are as follows: ①Disconnect the power supply; ②Open the pitch control cabinet and remove the two fixing clips on the terminal block; ③Install the 5.2V lightning protection module at the location removed in the previous step; ④ Remove the CAN communication line marked with IN from the pitch inverter, rearrange the communication line in the wire slot, and connect it to the newly added 5.2V lightning protection module input terminal; ⑤ Take a new 74cm long CAN communication line, strip the terminals at both ends, and use 0.75mm 2 Crimp the wire nose, connect one end to the output terminal of the newly added 5.2V lightning protection module, arrange it through the wire trough, install the variable pitch inverter plug on the other end, and connect it to the X4 port of the variable pitch inverter. Use a utility knife to pull out the shielding layer of the CAN communication line, fasten it with the spring clip of the variable pitch inverter, and tie the communication line with a cable tie.

Images