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A method of information collection and storage based on the control system of wind power generating set

A technology for wind turbines and information collection, which is applied in the control of wind turbines, wind turbines, wind power generation, etc. It can solve the problems of no records, unfavorable faults, and finding the cause of faults in the instantaneous fault SCADA system, so as to ensure accuracy and response speed Faster, improved operational reliability and safety

Active Publication Date: 2018-01-09
CHONGQING KK QIANWEI WINDPOWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned monitoring system for wind farms has the following deficiencies in use: SCADA systems usually use acquisition system standards and MODBUS communication protocols, and their sampling frequency is a fixed frequency from several hundred milliseconds to several seconds. Sampling variable data through a time scale is prone to instantaneous faults and the SCADA system has no records at all, which is not conducive to accurate and fast finding of fault causes

Method used

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  • A method of information collection and storage based on the control system of wind power generating set
  • A method of information collection and storage based on the control system of wind power generating set
  • A method of information collection and storage based on the control system of wind power generating set

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Embodiment 1

[0072] After adopting the above information collection and storage method based on the control system of the wind power generating set. For example, when the main control system reports the generator speed overspeed fault, the data collected by SCADA shows that the generator speed is normal, but the generator speed overspeed fault is always reported, and at this time the data acquisition is carried out by the method of the present invention, namely The collected variable data can be queried, and the exact moment when the speed jump occurs, as well as the specific value exceeding the normal value can be found. This will conclusively confirm that the problem is an incorrect reading from the tach sensor, allowing a quick check and finding that the fault is due to a loose cable between the tach and the PLC. It can be seen that after adopting the method of the present invention, the ability of diagnosing the fault of the wind power generating set can be significantly improved, and ...

Embodiment 2

[0074] Such as Figure 5 As shown, the vibration frequency analysis of the transmission chain is required in the early stage of the wind turbine. After adopting the method of the present invention, we can use a sampling frequency of 10ms, so we can obtain sampling data that is not easy to be distorted and high-precision, so that more accurate and reliable analysis results of the vibration frequency of the transmission chain can be obtained.

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Abstract

The invention discloses an information acquisition and storage method based on a wind generator set control system, which is characterized by acquiring an acquisition system which can be connected with a programmable logic controller in a communication mode and used for acquiring variable data. The information acquisition and storage method comprises the following steps: 1. defining scanning period and a time stamp of the programmable logic controller for controlling the wind generator set, wherein the scanning period is x milliseconds; 2. setting a variable data information table and variable data sampling frequency in the acquisition system, wherein the variable data sampling frequency is N*x milliseconds, and N is a positive number; 3. starting the acquisition system, and respectively acquiring the corresponding variable data in the programmable logic controller according to the variable data sampling frequency; and 4. storing the variable data by the acquisition system. The method can be used for acquiring more detailed variable data of the control system and helping with quickly and accurately detecting the fault cause, and thus, has important meanings for wind generator set state monitoring and fault diagnosis.

Description

technical field [0001] The invention belongs to the field of control systems of wind power generators, and in particular relates to an information collection and storage method based on the control system of wind power generators. Background technique [0002] Wind energy is inexhaustible and one of the ideal clean energy sources. Wind energy is very suitable for coastal islands, grassland pastoral areas, mountainous areas and plateau areas that are short of water, fuel, and inconvenient to use wind power to generate electricity according to local conditions. [0003] A wind turbine is a device that can use wind energy to generate electricity. The wind turbine consists of multiple parts, among which the control system runs through each part, and the quality of the control system is directly related to whether the wind turbine can operate safely and reliably, obtain the maximum energy, and provide good power quality. The control system mainly includes various sensors, pulp ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/40F03D7/04
CPCY02E10/72
Inventor 谢越王杰李辉刘志祥刘行中梁媛媛曹品
Owner CHONGQING KK QIANWEI WINDPOWER EQUIP
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