Information acquisition and storage method based on wind generator set control system

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 ...

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

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