CN213807942U - Fault data system and device for collecting vibration of wind turbine generator - Google Patents

Abstract

The utility model discloses a fault data system for collecting vibration of a wind turbine generator, which comprises a main collecting module and a main collecting and protecting module; the main acquisition module comprises an acceleration sensor, a vibration signal conditioning module, an ADC module, a first microprocessor module, a storage module and a communication module, wherein the acceleration sensor, the vibration signal conditioning module, the ADC module and the first microprocessor module are sequentially connected, and the storage module and the communication module are respectively connected with the first microprocessor module; the Rogowski coil sensor, the lightning current signal conditioning module, the ADC module and the microprocessor module II are sequentially connected, and the horizontal sensor is connected with the microprocessor module II. The utility model discloses protect the safe operation of gathering wind turbine generator system cabin interior equipment vibration information module, for the module of gathering vibration information provides the operational environment of safety and stability, meanwhile reduced the maintenance cost, further guaranteed wind turbine generator system's safe operation.

Description

Fault data system and device for collecting vibration of wind turbine generator

Technical Field

The invention belongs to the technical field of monitoring of the running state of a wind turbine generator, and particularly relates to a fault data system and a fault data device for collecting vibration of the wind turbine generator.

Background

The wind turbine generator is often located in a wide and windward and remote area, so that the geographical and natural environment are relatively severe, in recent years, wind power of China is rapidly developed, the capacity of a single machine of the wind turbine generator is continuously increased, the structure of the wind turbine generator is also increasingly complex, and various faults of various parts in a cabin of the wind turbine generator, such as a main shaft bearing, a gear box, a generator and the like, are continuously increased.

In order to ensure the long-term safe and stable operation of the wind turbine, vibration information of the wind turbine needs to be collected in real time, the fault type and whether the operation state of each device is normal or not are reflected by the mechanical quantity of the vibration information of the devices in the engine room, effective and accurate vibration data are provided for subsequent fault diagnosis and wind turbine state monitoring, the troubleshooting time of faults in the engine room can be further shortened, more serious damage caused by further development of the faults can be effectively prevented, and the maintenance cost can be reduced.

Disclosure of Invention

The invention aims to provide a fault data system and a device for acquiring vibration of a wind turbine generator, which solve the problems that in the prior art, a vibration information acquisition module during operation is damaged due to excessive lightning current, or acquired vibration information has deviation due to great shaking, and further errors and even errors occur in subsequent fault diagnosis and operation state prediction of equipment in a cabin of the wind turbine generator.

The technical scheme adopted by the invention is that,

a fault data system for collecting vibration of a wind turbine generator comprises a main collection module and a main collection protection module; the main acquisition module comprises an acceleration sensor, a vibration signal conditioning module, an ADC module, a first microprocessor module, a storage module and a communication module, wherein the acceleration sensor, the vibration signal conditioning module, the ADC module and the first microprocessor module are sequentially connected, and the storage module and the communication module are respectively connected with the first microprocessor module; the main acquisition protection module comprises a Rogowski coil sensor, a lightning current signal conditioning module, an ADC (analog-to-digital converter) module, a horizontal sensor and a microprocessor module II, the Rogowski coil sensor, the lightning current signal conditioning module, the ADC module and the microprocessor module II are sequentially connected, and the horizontal sensor is connected with the microprocessor module II.

A fault data device for collecting vibration of a wind turbine generator comprises a main collection module and a main collection protection module, wherein the main collection module comprises an acceleration sensor, a vibration signal conditioning module, an ADC (analog-to-digital converter) module, a microprocessor module I, a storage module and a communication module, and the main collection protection module comprises a Rogowski coil sensor, a lightning current signal conditioning module, an ADC module, a horizontal sensor and a microprocessor module II;

the Rogowski coil sensor is respectively arranged on the gear box and the generator; the acceleration sensors are respectively arranged on the main shaft bearing, the gear box, the high-speed bearing of the gear box, the generator and the rear bearing of the generator; the horizontal sensor is respectively arranged on the gear box and the generator, is tightly attached to the surface of the gear box and is parallel to the axis of the equipment to be tested, and has no included angle.

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

the safe operation of the module for collecting the vibration information of the equipment in the cabin of the wind turbine generator is protected, and a safe and stable operation environment is provided for the module for collecting the vibration information. The method can eliminate certain interference and errors caused by huge shaking caused by various factors on the acquired vibration information, further improve the accuracy and reliability of subsequent fault judgment, reduce the troubleshooting time, further inhibit the development and spread of the fault, reduce the maintenance cost and further ensure the safe operation of the wind turbine generator.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a timing diagram of the operation of the main acquisition module to acquire vibration information;

FIG. 3 is a diagram of the hardware connections of the first microprocessor module and the second microprocessor module.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention include, but are not limited to, the scope shown in the following examples.

As shown in fig. 1, the system is a structural block diagram of a fault data system for collecting vibration of a wind turbine generator, and the system includes a main collection module and a main collection protection module. The vibration signal processing device comprises a main acquisition module consisting of an acceleration sensor, a vibration signal conditioning module, an ADC (analog to digital converter) module, a first microprocessor module, a storage module and a communication module, wherein the acceleration sensor, the vibration signal conditioning module, the ADC module and the first microprocessor module are sequentially connected in series, and I/O ports of the storage module and the communication module are respectively connected with I/O ports of the first microprocessor module in a bidirectional mode. The Rogowski coil sensor, the lightning current signal conditioning module, the ADC module and the microprocessor module II are sequentially connected in series, and the output end of the horizontal sensor is directly connected with the input end of the microprocessor module II. And the control output end of the microprocessor module II in the main acquisition protection module is connected with the control port of the microprocessor module I in the main acquisition module, and the working state of the whole main acquisition module is controlled.

The main acquisition module acquires vibration information in the cabin by using the acceleration sensor, outputs a voltage signal in proportion to the corresponding vibration physical quantity, the vibration signal conditioning module performs a series of preprocessing on the vibration voltage signal, the ADC module samples the conditioned vibration signal to obtain a vibration digital signal, and then the microprocessor module calculates and analyzes the vibration digital signal and transmits the vibration digital signal to the background analysis center through the communication module.

The main acquisition protection module acquires lightning current information in a cabin of the wind turbine generator by using the Rogowski coil sensor, processes a lightning current signal to a voltage range which can be acquired by the ADC module through the conditioning effect of the lightning current signal conditioning module so as to prevent the ADC module from being damaged, and transmits a sampled lightning current digital signal to the microprocessor module II to calculate and analyze to obtain a characteristic data index of the lightning current. And meanwhile, the horizontal sensor collects horizontal angle information in real time and sends the information to the microprocessor module II for processing. In the operation process of the main acquisition module, if the lightning current information acquired by the main acquisition protection module is abnormal, the microprocessor module II sends a corresponding power-down control command, so that the microprocessor module I is in a power-down protection working mode, and the acceleration sensor also stops acquiring vibration information at the moment, thereby protecting the safe operation of the main acquisition module. If abnormal horizontal angle signals occur, the acceleration sensor does not collect vibration information any more, so that the situation that the collected vibration information is inaccurate due to huge shaking and deviation occurs when the background analysis center carries out fault prediction on the wind turbine generator is avoided. And then can high-efficient accurate vibration information of gathering wind turbine generator system cabin equipment through above measure.

As shown in fig. 2, the working timing chart of the main acquisition module for acquiring vibration information is shown, and lightning current information and horizontal angle information of equipment in the nacelle of the wind turbine generator are acquired through the rogowski coil sensor and the horizontal sensor in the main acquisition protection module.

(1) As shown in the condition a of fig. 2, when the rogowski coil sensor does not acquire lightning current information and the horizontal angle information acquired by the horizontal sensor belongs to a normal value range, the acceleration sensor normally acquires vibration information of equipment in the cabin and the microprocessor module is in a normal working state;

(2) as shown in the condition B of fig. 2, when the lightning current information collected by the rogowski coil sensor is within the normal value range and the horizontal angle information collected by the horizontal sensor is not abnormal, the acceleration sensor still normally collects the vibration information of the equipment in the nacelle and the microprocessor module is in a normal working state;

(3) as shown in the case C of fig. 2, if the lightning current information collected by the rogowski coil sensor is within the normal value range or the lightning current information is not collected, but the horizontal angle signal collected by the horizontal sensor is abnormal at this time, the acceleration sensor does not collect the vibration information, and the microprocessor module still works normally;

(4) as shown in the condition D of fig. 2, if the information collected by the rogowski coil sensor still belongs to the normal value, and the horizontal angle information collected by the horizontal sensor is recovered to the normal value range from the abnormal condition of the previous stage at this time, the acceleration sensor recovers to the normal vibration information collection from the collection stop state;

(5) as shown in the case E of fig. 2, when the lightning current information acquired by the rogowski coil sensor is abnormal, the first microprocessor module is in a power-down working state and the acceleration sensor does not acquire vibration information;

(6) as shown in the case F of fig. 2, if the lightning current information collected by the rogowski coil sensor is recovered to the normal range and the horizontal angle information belongs to the normal value, the microprocessor module exits the power down mode and recovers to the normal working state, and the acceleration sensor also recovers to collect the vibration information normally.

As shown in fig. 3, the hardware connection diagram of the first microprocessor module and the second microprocessor module is shown, and the control output end of the second microprocessor module is connected to the control port of the first microprocessor module. Taking the data index of the lightning current information as a standard, when the index of the collected lightning current data is higher than the standard obtained by past experience, indicating that the current lightning current may damage the main collection module, as shown in a case E in fig. 2, a second microprocessor module generates a corresponding power-down control signal, and then transmits the power-down control signal to a first microprocessor module through the second microprocessor module, and when the first microprocessor module detects and receives the power-down control signal, the first microprocessor module enters a power-down working mode. And during the first microprocessor module is in a power-down working mode, the crystal oscillator stops vibrating, wherein all parts such as a CPU (central processing unit), a timer, a serial port and the like stop working, and the first microprocessor module stops working. When the voltage for supplying power to the microprocessor module is detected to be reduced to the rated working voltage, some important information of the voltage is stored into the on-chip RAM memory, and the standby power supply supplies power to the RAM, so that the important information can be prevented from being lost. When the lightning current data collected by the main collection protection module is restored to be within a normal value range, a voltage supplied to the microprocessor module is also restored to be a normal value at the moment, the hardware reset circuit provides a reset positive pulse signal, the microprocessor module quits the power-down working state, the standby power supply still supplies power to the RAM at the moment, and the microprocessor module finishes resetting in order to ensure that the crystal oscillator is started. Therefore, irreversible damage to the main acquisition module due to excessive lightning current can be prevented, information loss of the main acquisition module during operation can be prevented, and normal operation of the main acquisition module can be guaranteed.

Claims (2)

1. The utility model provides a gather fault data system of wind turbine generator system vibration which characterized in that:

the system comprises a main acquisition module and a main acquisition protection module; the main acquisition module comprises an acceleration sensor, a vibration signal conditioning module, an ADC module, a first microprocessor module, a storage module and a communication module, wherein the acceleration sensor, the vibration signal conditioning module, the ADC module and the first microprocessor module are sequentially connected, and the storage module and the communication module are respectively connected with the first microprocessor module; the main acquisition protection module comprises a Rogowski coil sensor, a lightning current signal conditioning module, an ADC (analog-to-digital converter) module, a level sensor and a microprocessor module II, the Rogowski coil sensor, the lightning current signal conditioning module, the ADC module and the microprocessor module II are sequentially connected, and the level sensor is connected with the microprocessor module II.

2. The utility model provides a gather trouble data device of wind turbine generator system vibration which characterized in that:

the device comprises a main acquisition module and a main acquisition protection module, wherein the main acquisition module comprises an acceleration sensor, a vibration signal conditioning module, an ADC (analog-to-digital converter) module, a microprocessor module I, a storage module and a communication module, and the main acquisition protection module comprises a Rogowski coil sensor, a lightning current signal conditioning module, an ADC module, a horizontal sensor and a microprocessor module II;

the Rogowski coil sensor is respectively arranged on the gear box and the generator; the acceleration sensors are respectively arranged on the main shaft bearing, the gear box, the high-speed bearing of the gear box, the generator and the rear bearing of the generator; the horizontal sensor is respectively arranged on the gear box and the generator, is tightly attached to the surface of the gear box and is parallel to the axis of the equipment to be tested, and has no included angle.

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