CN111594396A - Wind turbine generator system state monitoring system - Google Patents

Abstract

The invention discloses a wind turbine generator state monitoring system which comprises an upper computer, a DSP (digital signal processor), an image acquisition system, a sound pickup, temperature sensors and a vibration sensor, wherein the image acquisition system is used for acquiring running images of a wind turbine generator and a wind field, images at the interface of a gear box, running images of the wind turbine generator and a yaw image of the wind turbine generator in a cabin, the sound pickup is used for acquiring sound signals of the gear box during working, the temperature sensors are used for detecting the temperatures in the cabin and outside the cabin, and the vibration sensor is used for detecting vibration signals of the gear box.

Description

A wind turbine state monitoring system

technical field

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

Background technique

Compared with the direct drive wind turbine, the frequency of gearbox failure is higher in the double-fed wind turbine. When the gearbox fails, the maintenance and replacement is also more troublesome and the cost is high. If effective measures can be taken in time in the early stage of gearbox failure, the maintenance cost of the unit can be greatly reduced. Although most of the units currently in operation are equipped with vibration monitoring devices, only the vibration signals are detected, and the signals are not analyzed and processed, which eventually leads to the damage of the unit gearbox. And because the wind farms are located in the wild with harsh environment, and the distance between the wind turbines is relatively far, so when a fault occurs, the maintenance of the unit will be more difficult. Based on the above situation, it is necessary to design a relatively complete intelligent monitoring system for wind turbines based on the traditional wind turbine monitoring system.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above shortcomings of the prior art, and to provide a wind turbine state monitoring system, which can realize on-line monitoring of the operating state of the wind turbine.

In order to achieve the above purpose, the wind turbine state monitoring system of the present invention includes a host computer, a DSP processor, an image for collecting the operation image of the turbine and the wind farm, the image at the interface of the gearbox, the operation image of the turbine in the engine room, and the yaw image of the turbine. A collection system, a pickup for acquiring sound signals when the gearbox is working, a temperature sensor for detecting temperatures in and outside the engine room, and a vibration sensor for detecting vibration signals of the gearbox, wherein the output end of the vibration sensor, the temperature sensor The output end of the pickup, the output end of the pickup and the output end of the image acquisition system are connected with the input end of the DSP processor, and the output end of the DSP processor is connected with the upper computer.

The image acquisition system includes four groups of cameras, wherein the first group of cameras is installed on the outside of the nacelle, the second group of cameras is installed on the gear box side of the unit, the third group of cameras is installed on the top of the inside of the nacelle, and the fourth group of cameras is installed on the tower. Tube twist cable.

The number of vibration sensors is two, one vibration sensor is installed on the high-speed shaft, and the other vibration sensor is installed on the low-speed shaft.

The vibration sensor is connected with the DSP processor through the first filtering and amplifying circuit.

The image acquisition system is connected with the DSP processor through the second filter amplifying circuit.

The pickup is connected with the DSP processor through a third filter amplifying circuit.

The temperature sensor is connected with the DSP processor through the fourth filter amplifying circuit.

Also includes a display and memory connected to the DSP processor.

The present invention has the following beneficial effects:

During the specific operation of the wind turbine state monitoring system according to the present invention, the DSP processor collects the operation image of the turbine and the wind farm, the image at the interface of the gearbox, the operation image of the turbine in the engine room and the yaw image of the turbine through the image acquisition system. The vibration sensor obtains the vibration signal of the gearbox, obtains the sound signal when the gearbox is working through the pickup, obtains the temperature signal inside and outside the engine room through the temperature sensor, and judges whether the collected signal is normal, when the collected data fee is normal , then an alarm signal is generated to the host computer, so as to realize the online monitoring of the running state of the wind turbine, the structure is simple, the operation is convenient, and the practicability is extremely strong.

Description of drawings

FIG. 1 is a schematic diagram of the present invention.

Among them, 1 is the vibration sensor, 2 is the image acquisition system, 3 is the pickup, 4 is the temperature sensor, 5 is the first filter amplifying circuit, 6 is the second filter and amplify circuit, 7 is the third filter and amplify circuit, 8 is the fourth Filter amplifying circuit, 9 is a DSP processor, and 10 is a host computer.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in further detail:

Referring to FIG. 1 , the wind turbine state monitoring system according to the present invention includes a host computer 10, a DSP processor 9, a device for collecting the operation image of the turbine and the wind farm, the image at the interface of the gearbox, the operation image of the turbine in the engine room, and the yaw image of the turbine. An image acquisition system 2, a pickup 3 for acquiring sound signals when the gearbox is working, a temperature sensor 4 for detecting the temperature inside and outside the cabin, and a vibration sensor 1 for detecting vibration signals of the gearbox, wherein the vibration sensor 1 The output end of the DSP processor 9, the output end of the temperature sensor 4, the output end of the pickup 3 and the output end of the image acquisition system 2 are connected to the input end of the DSP processor 9, and the output end of the DSP processor 9 is connected to the upper computer 10. In addition, the present invention also includes a display and a memory connected to the DSP processor 9 .

The image acquisition system 2 includes four groups of cameras, wherein the first group of cameras is installed on the outside of the cabin, the second group of cameras is installed on the gear box side of the unit, the third group of cameras is installed on the top of the inside of the cabin, and the fourth group of cameras is installed in the cabin. The twisted cable of the tower.

The number of vibration sensors 1 is two, and one vibration sensor 1 is installed on the high-speed shaft, and the other vibration sensor 1 is installed on the low-speed shaft.

The vibration sensor 1 is connected with the DSP processor 9 through the first filter amplifying circuit 5; the image acquisition system 2 is connected with the DSP processor 9 through the second filter amplifying circuit 6; the pickup 3 is connected with the DSP processor through the third filter amplifying circuit 7 9 is connected; the temperature sensor 4 is connected with the DSP processor 9 through the fourth filter amplifying circuit 8 .

The concrete working process of the present invention is:

The DSP processor 9 collects the operating images of the generator set and the wind farm, the image at the interface of the gearbox, the operating image of the generator set in the engine room, and the yaw image of the generator set through the image acquisition system 2, and judges whether the generator set and the wind farm are running normally, and the gear Whether there is oil leakage at the interface of the tank, whether the unit in the engine room is running normally, and whether the yaw of the unit is twisted. When the cable is connected, the first alarm signal is sent to the host computer 10, and the judgment is generally realized by image comparison;

The DSP processor 9 obtains the vibration signal of the gearbox through the vibration sensor 1, and judges whether the vibration signal of the current gearbox is normal. When the vibration signal of the current gearbox is abnormal, it sends a second alarm signal to the host computer 10. When judging, it is generally judged by the threshold of the amplitude peak value, that is, when the amplitude peak value of the vibration signal is greater than its threshold, it is abnormal;

The DSP processor 9 obtains the sound signal when the gear box is working through the pickup 3, and judges whether the sound signal when the current gear box is working is normal. When the sound signal when the current gear box is working is abnormal, a third alarm signal is sent to the upper The machine 10 generally judges by the threshold of the amplitude peak value when judging, that is, when the amplitude peak value of the sound signal is greater than the threshold, it is abnormal;

The DSP processor 9 obtains the temperature signals in the cabin and outside the cabin through the temperature sensor 4, and judges whether the temperature in the cabin and outside the cabin exceeds the preset range. When the temperature in the cabin is not within the preset temperature range in the cabin or the cabin When the outside temperature is not within the preset temperature range outside the cabin, a fourth alarm signal is generated to the upper computer 10;

The host computer 10 receives and displays the first, second, third and fourth alarm signals, and the DSP processor 9 stores the received signals in the memory for the host computer 10 to query.

The invention has strong adaptability and good functionality, can efficiently and reliably complete the functions of real-time data reception, data display, alarm, data storage and data query, and provides a favorable guarantee for the monitoring of the running state of the unit. Reduce maintenance costs, improve work efficiency, realize remote information sharing, and achieve the purpose of rational utilization of resources.

The above is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Claims (8)

1. The utility model provides a wind turbine generator system state monitoring system, a serial communication port, including host computer (10), DSP treater (9), be used for gathering unit and wind field operation image, gear box kneck image, image acquisition system (2) of unit operation image and unit driftage image in the cabin, a sound pick-up (3) for acquireing the sound signal of gear box during operation, a temperature sensor (4) for detecting cabin and cabin outside temperature and a vibration sensor (1) for detecting gear box vibration signal, wherein, the output of vibration sensor (1), the output of temperature sensor (4), the output of sound pick-up (3) and the output of image acquisition system (2) are connected with the input of DSP treater (9), the output of DSP treater (9) is connected with host computer (10).

2. The wind turbine state monitoring system according to claim 1, wherein the image acquisition system (2) comprises four sets of cameras, wherein a first set of cameras is installed on the outer side of the nacelle, a second set of cameras is installed on the side of the gearbox of the wind turbine, a third set of cameras is installed on the top of the interior of the nacelle, and a fourth set of cameras is installed at the twisted cable position of the tower.

3. Wind turbine condition monitoring system according to claim 1, characterized in that the number of vibration sensors (1) is two, wherein one vibration sensor (1) is mounted on the high speed shaft and the other vibration sensor (1) is mounted on the low speed shaft.

4. Wind turbine condition monitoring system according to claim 1, wherein the vibration sensor (1) is connected to the DSP processor (9) via a first filter amplifier circuit (5).

5. The wind turbine state monitoring system according to claim 4, wherein the image acquisition system (2) is connected with the DSP processor (9) through a second filtering and amplifying circuit (6).

6. The wind turbine state monitoring system according to claim 5, wherein the pickup (3) is connected to the DSP processor (9) through a third filter amplifier circuit (7).

7. Wind turbine state monitoring system according to claim 6, wherein the temperature sensor (4) is connected to the DSP processor (9) via a fourth filter amplifier circuit (8).

8. The wind turbine state monitoring system according to claim 7, further comprising a display and a memory connected to the DSP processor (9).

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