阅读说明：本技术 一种海上风电机组支撑结构状态监测系统 (Offshore wind turbine generator system supporting structure state monitoring system ) 是由 刘鑫 孙少华 卢坤鹏 陈新明 杭兆峰 杨立华 姚晖 张宇 成志平 曾煜君 于 2021-09-14 设计创作，主要内容包括：本发明属于风力发电领域,具体涉及一种海上风电机组支撑结构状态监测系统,包括依次相连的传感器、数据采集系统、数据处理与存储单元、通讯交互装置和终端监测平台；传感器由温度传感器、湿度传感器、气压传感器、H-(2)S传感器、支撑结构载荷传感器和螺栓拉伸传感器并联组成；基于传感器,实时获得海上风力发电机组支撑结构内部环境条件与运行载荷情况,将传感器检测的数据与安全阈值相比,将各种数据通过通讯交互装置传递到终端监测平台,实现对风电机组内部情况的实时监测。(The invention belongs to the field of wind power generation, and particularly relates to a state monitoring system for a supporting structure of an offshore wind turbine generator system, which comprises a sensor, a data acquisition system, a data processing and storing unit, a communication interaction device and a terminal monitoring platform which are sequentially connected; the sensor comprises a temperature sensor, a humidity sensor, an air pressure sensor and a sensor H 2 The S sensor, the supporting structure load sensor and the bolt tension sensor are connected in parallel; based on the sensor, the internal environmental conditions and the operating load conditions of the supporting structure of the offshore wind turbine generator system are obtained in real time, the data detected by the sensor are compared with the safety threshold value, various data are transmitted to the terminal monitoring platform through the communication interaction device, and the real-time monitoring of the internal conditions of the wind turbine generator system is achieved.)

1. A system for monitoring the condition of an offshore wind turbine support structure, comprising: the system comprises a sensor (1), a data acquisition system (2), a data processing and storing unit (3), a communication interaction device (5) and a terminal monitoring platform (6) which are connected in sequence;

the sensor (1) is composed of a temperature sensor (1.1), a humidity sensor (1.2), an air pressure sensor (1.3) and H₂The S sensor (1.4), the supporting structure load sensor (1.5) and the bolt tension sensor (1.6) are connected in parallel;

temperature sensor (1.1) and humidity transducer (1.2) set up in the radiation protection cover on a tower section of thick bamboo and basic connection platform (9), baroceptor (1.3) set up in the atmospheric pressure equipment cabinet, H₂The number of the S sensors (1.4) is a plurality of sensors which are uniformly arranged around the tower drum and the base connecting layer platform (9), and the number of the supporting structure load sensors (1.5) is a plurality of sensors which are uniformly arranged on the tower for supportingOn the inner wall of the barrel, the spiral shaft force sensor (1.6) is provided with a plurality of bolts which are respectively arranged on different bolts in the tower barrel and the foundation connecting platform (9).

2. Offshore wind turbine support structure condition monitoring system according to claim 1, characterized in that the number of support structure load sensors (1.5) is equal to or greater than four.

3. Offshore wind turbine support structure condition monitoring system according to claim 1, characterized in that the number of bolt axial force sensors (1.6) is equal to or larger than eight.

4. A state monitoring system for a supporting structure of an offshore wind turbine, according to claim 1, characterized in that it further comprises an alarm device (4), said alarm device (4) being connected to the data processing and storage unit (3).

5. The offshore wind turbine support structure state monitoring system according to claim 4, further comprising a wind turbine power supply system (7), wherein the wind turbine power supply system (7) is connected to the data acquisition system (2), the data processing and storage unit (3), the alarm device (4) and the communication interaction device (5) respectively.

6. The offshore wind turbine support structure condition monitoring system according to claim 5, further comprising an uninterruptible power supply (7.1) for supplying power to the data acquisition system (2), the data processing and storage unit (3), the alarm device (4) and the communication interaction device (5) when the wind turbine power supply system (7) fails.

7. A system for monitoring the condition of a supporting structure of an offshore wind turbine, according to claim 1, characterized in that said terminal monitoring platform (6) is a computer, a mobile device or a server.

8. A system for monitoring the condition of a supporting structure of an offshore wind turbine, according to claim 1, characterized in that each terminal monitoring platform (6) is connected to a plurality of communication interaction devices (5) simultaneously.

9. A working method of an offshore wind turbine support structure condition monitoring system, according to claim 4, comprising the steps of:

the temperature, the humidity, the air pressure and the H inside the supporting structure are collected by a sensor (1)₂S, information of gas concentration, load of a support structure and axial force load of a bolt;

the data acquisition system (2) recovers and corrects time of the information acquired by the sensor (1);

the data processing and storing unit (3) compares the data after the time calibration of the data acquisition system (2) with respective safety threshold values, stores the processed data, and sends a signal to the alarm device (4) when the processed data is greater than the safety threshold values;

when the alarm device (4) receives the signal transmitted from the data processing and storing unit (3), an alarm is given;

and the communication interaction device (5) receives the data processed by the data processing and storage unit (3) and transmits the data to the terminal monitoring platform (6) through a network.

Technical Field

The invention belongs to the field of wind power generation, and particularly relates to a state monitoring system for an offshore wind turbine supporting structure.

Background

In recent years, the capacity of an offshore wind turbine assembling machine is increased year by year, compared with an onshore wind power plant, the construction cost and the equipment cost of the offshore wind power plant are obviously increased in a construction period, the offshore wind power equipment maintenance is influenced by adverse sea conditions such as typhoons and waves in an operation period, the accessibility and timeliness are poor, the wind turbine generator is difficult to operate and maintain, and the cost is very high. In order to ensure safe and stable operation of the wind turbine and reduce operation and maintenance costs, the fault rate of the wind turbine needs to be reduced as much as possible from the viewpoints of improving the research and development technical level of the wind turbine and increasing state monitoring, so that the reliability of the wind turbine is especially important.

High humidity and high salt fog in the environment of an offshore wind power plant generate great corrosion hazard to the wind turbine generator, and organisms inside the sea water inside the supporting structure generate highly toxic hydrogen sulfide gas after rotting, so that safety risks are brought to overhaul and maintenance of wind turbine generator operation and maintenance personnel. Under the general condition, after the concentration of the toxic gas is higher than a threshold value, gas exchange is needed to reduce the concentration of the toxic gas, and meanwhile, the internal environment condition of the wind turbine generator in micro-positive pressure is guaranteed. Therefore, the monitoring of the environmental conditions inside the wind turbine generator is helpful for knowing the internal environment state to determine the sealing performance and the harmfulness of the wind turbine generator, the reliability of the wind turbine generator can be improved, and safety early warning and safety guarantee are provided for operation and maintenance work.

Wind power plants built in the southeast coastal region of China are influenced by typhoons all the year round, wind turbine generators are caused to fall down when the wind power plants are serious, state monitoring of supporting structure load is carried out, load influenced by coupling of wind waves on the supporting structures, load borne by the wind turbine generators under typhoon conditions, impact load generated by ship stop and bolt pretightening force values can be collected for a long time, and the method has important significance for guaranteeing safety of the wind turbine generators, evaluating service life loss of the supporting structures and improving operation and maintenance levels.

Disclosure of Invention

The invention aims to provide a state monitoring system for an offshore wind turbine supporting structure, which is used for realizing real-time monitoring and early warning on the load of the offshore wind turbine supporting structure and the axial force of a bolt, ensuring the safe operation of a wind turbine, providing a data base for the service life damage of the supporting structure, sensing the concentration of toxic gas and providing early warning for operation and maintenance operators to reduce risks.

In order to achieve the purpose, the invention adopts the following technical scheme:

an offshore wind turbine support structure condition monitoring system, comprising: the system comprises a sensor, a data acquisition system, a data processing and storing unit, a communication interaction device and a terminal monitoring platform which are sequentially connected;

the sensor is formed by connecting a temperature sensor, a humidity sensor, an air pressure sensor, an HS sensor, a supporting structure load sensor and a bolt tension sensor in parallel;

temperature sensor and humidity transducer set up in the radiation protection cover on a tower section of thick bamboo and basic linking platform, baroceptor sets up in the atmospheric pressure equipment cabinet, HS sensor quantity has a plurality of and evenly sets up around a tower section of thick bamboo and basic linking layer platform, bearing structure load cell has a plurality of and evenly sets up on the tower section of thick bamboo inner wall that plays the supporting role, the screw axis force sensor has a plurality of to arrange respectively on the bolt of difference in a tower section of thick bamboo and basic linking platform.

The invention is further improved in that: the alarm device is connected with the data processing and storing unit.

The invention is further improved in that: the wind turbine power supply system is respectively connected with the data acquisition system, the data processing and storage unit, the alarm device and the communication interaction device.

The invention is further improved in that: the wind turbine generator system further comprises an uninterruptible power supply which is used for supplying power to the data acquisition system, the data processing and storage unit, the alarm device and the communication interaction device when the power supply system of the wind turbine generator system fails.

The invention is further improved in that: the number of the supporting structure load sensors is more than or equal to four.

The invention is further improved in that: the number of the bolt axial force sensors is more than or equal to eight.

The invention is further improved in that: the terminal monitoring platform is a computer, mobile equipment or a server.

The invention is further improved in that: and each terminal monitoring platform is simultaneously connected with a plurality of communication interaction devices.

A working method of a state monitoring system of an offshore wind turbine supporting structure is based on the state monitoring system of the offshore wind turbine supporting structure, and comprises the following steps:

the temperature, the humidity, the air pressure and the H inside the supporting structure are collected by a sensor₂S, information of gas concentration, load of a support structure and axial force load of a bolt;

the data acquisition system recovers and corrects the time of the information acquired by the sensor;

the data processing and storing unit compares the data after the time calibration of the data acquisition system with respective safety threshold values, stores the processed data, and sends a signal to the alarm device when the processed data is greater than the safety threshold values;

the alarm device sends out an alarm when receiving the signal transmitted from the data processing and storing unit;

and the communication interaction device receives the data processed by the data processing and storage unit and transmits the data to the terminal monitoring platform through the network.

Compared with the prior art, the invention has the following beneficial effects:

1. based on the sensor, the internal environmental condition and the running load condition of the supporting structure of the offshore wind generating set are obtained in real time, the data detected by the sensor are compared with a safety threshold value, various data are transmitted to a terminal monitoring platform through a communication interaction device, the internal condition of the wind generating set is monitored in real time, and the internal condition of the wind generating set is monitored through a temperature sensor, a humidity sensor, an air pressure sensor and an H sensor₂The S sensor, the supporting structure load sensor and the bolt tension sensor are 6 sensors, the internal environmental information and the structural information of the wind turbine are monitored in an all-dimensional mode, and safety performance is improved.

2. The terminal monitoring platform can select the mobile equipment to increase the convenience of the equipment.

3. A wind turbine power supply system is adopted to supply power for each part, and an uninterruptible power supply is arranged to serve as a standby power supply when the wind turbine power supply system fails, so that monitoring stop caused by power failure is avoided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of an electrical connection structure of a system for monitoring the state of a support structure of an offshore wind turbine generator system according to the present invention.

FIG. 2 is a schematic layout of a system for monitoring the condition of a support structure of an offshore wind turbine.

FIG. 3 is a schematic view of the overall structure of the state detection of the supporting structure of the wind generating set of the state monitoring system of the supporting structure of the offshore wind generating set of the present invention.

In the figure: 1. a sensor; 1.1, a temperature sensor; 1.2 humidity sensor, 1.3 air pressure sensor; 1.4, H2S sensor; 1.5, a resistance type strain gauge; 1.6, a bolt axial force sensor; 2. a data acquisition system; 3. a data processing and storage unit; 4. an alarm device; 5. a communication interaction device; 6. a terminal monitoring platform; 7. a wind turbine generator system power supply system; 7.1 an uninterruptible power supply; 8. a first-layer platform in the tower; 9. a tower section of thick bamboo and basic articulamentum platform.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.

Example 1

As shown in fig. 1-3, a system for monitoring the state of a supporting structure of an offshore wind turbine generator system comprises a sensor 1, a data acquisition system 2, a data processing and storage unit 3, a communication interaction device 5 and a terminal monitoring platform 6 which are connected in sequence;

the data processing and storing unit 3 is connected with the alarm device 4;

the wind turbine generator system power supply system 7 is respectively connected with the data acquisition system 2, the data processing and storage unit 3, the alarm device 4 and the communication interaction device 5.

SensingThe device 1 comprises a temperature sensor 1.1, a humidity sensor 1.2, an air pressure sensor 1.3 and H₂The S sensor 1.4, the supporting structure load sensor 1.5 and the bolt tension sensor 1.6 are connected in parallel.

The first layer platform 8 in the tower barrel is arranged in the middle of the tower barrel of the wind turbine;

the tower and the base connecting layer platform 9 are arranged below the first layer platform 8 in the tower.

The temperature sensor 1.1 and the humidity sensor 1.2 are arranged in the radiation-proof cover and fixed on the tower and the base connecting layer platform 9, and temperature and humidity signals are accessed into the data acquisition system 2 through cables;

the air pressure sensor 1.3 is used for measuring the air pressure around the supporting structure, is arranged in the air pressure equipment cabinet and is connected into the data acquisition unit 2 through a cable.

H₂The S sensor 1.4 is used for monitoring the concentration of hydrogen sulfide gas in ambient air, and H is uniformly distributed around the tower and the basic connecting layer platform 9₂And the S sensor is used for numbering, installing, photographing and recording the sensors at each position, and transmitting data in a communication mode to judge whether the sensors are suitable for operation in the current environment.

The supporting structure load sensors 1.5 are used for measuring load changes of the supporting structure, are arranged on the inner wall of the supporting structure tower barrel, are four in total, are arranged every 90 degrees, are tested in a full-bridge circuit mode, and are connected into the data acquisition system 2.

At least 8 bolt axial force sensors 1.6 are uniformly arranged on bolts in the tower barrel and the foundation connecting layer 9, and signals are connected into the data acquisition unit 2 through cables.

And the signals of the sensors are synchronously transmitted after timing, and are communicated through RS485 or modbus inside the unit end.

The data acquisition system 2, the data processing and storage unit 3 and the communication interaction device 5 are all arranged on a first-layer platform 8 in the tower.

The data acquisition system 2 realizes communication of the collectors distributed at various positions, recovers data of the collectors, and realizes timing of the collectors.

The data processing and storage unit 3 processes and stores the data acquired by the data acquisition system 2, converts the electric signals into load data which can be directly identified, compares the monitored gas data and the load data with respective safety threshold values respectively, and sends out sound and lamplight by the alarm device 4 to play a role in warning when the data acquired in real time is higher than the safety threshold values, so that the operator is warned and prohibited to enter the device.

The alarm device 4 is an off-line alarm device.

After the single wind generating set state monitoring system is installed, the communication interaction device 5 transmits the measuring result from the fan to the terminal monitoring platform 6 through network communication.

The terminal monitoring platform 6 is a computer, a mobile device or a server, can be connected with a plurality of wind turbines, collects the state of each turbine, and draws a monitoring data curve and early warning information in real time to realize monitoring of the whole wind power plant.

Under the normal use condition, the sensor 1, the data acquisition System 2, the data processing and storage unit 3, the alarm device 4 and the communication interaction device 5 are directly powered by the wind turbine generator System 7, and when abnormal Power failure, unit maintenance and other conditions occur, the Uninterruptible Power supply 7.1 (UPS for short) is started and continuously supplies Power to ensure the System operation.

Example 2

An operating method of an offshore wind turbine support structure state monitoring system is based on embodiment 1, and includes the following steps:

the sensor 1 is used for collecting the internal temperature, humidity, air pressure and H of the supporting structure₂S, information of gas concentration, load of a support structure and axial force load of a bolt;

the data acquisition system 2 recovers and corrects the time of the information acquired by the sensor 1;

the data processing and storing unit 3 compares the time-corrected data of the data acquisition system 2 with respective safety threshold values, stores the processed data, and sends a signal to the alarm device 4 when the processed data is greater than the safety threshold values;

the alarm device 4 sends out an alarm when receiving the signal transmitted from the data processing and storing unit 3;

and the communication interaction device 5 receives the data processed by the data processing and storage unit 3 and transmits the data to the terminal monitoring platform 6 through a network.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.