Wind Turbines Running Condition Assessment Method Researched By SCADA Data

At present, with the wind power impact on the grid, it leads to wind power on alarge scale grid, lead to the regulation of other power need higher ability to ensurethat the grid dispatching operation, fault level and stability of power grid when windpower on a large scale grid. It has important practical significance tha effectivelyassess the running state of grid wind turbines and wind power can achievelarge-scale security reliable and efficient parallel operation.This article has carriedon the grid wind turbines running condition assessment from several aspects, such asthe survey of wind power, wind power unit performance evaluation model, and windpower evaluation model, the work is as follows:(1) On the basis of the basic principle of parallel operation of the wind generator, thisarticle analyzes the grid wind turbines running basic information, such as the basicstructure, basic types, working principle, online condition monitoring basicparameters and the failure mechanism of main parts, etc.(2) In view of the grid power characteristics of wind turbines, this articleproposed some research methods that mainly includes using quantitative indicatorsto analyzing wind output power and using the normal distribution function to fittingthe probability density distribution of wind power min level component. The contentis as follows: Firstly, it defines the quantitative measure, and from two aspects toanalyses the characteristics of the wind’s fluctuation which content differential timescales and wind farm capacity; Secondly, using secondary scrolling average methodto extract the min level component of wind farm output power, and using the normaldistribution function to fit the probability density distribution of min levelcomponent. All work is to research Wind power min component probabilitydistribution, under the condition of wind farms’ installed capacity and choosingdifferent rolling window.(3) Considering the variable speed constant frequency characteristics of windturbine, this paper studies an evaluation model for parallel operation performance ofwind turbines. Based on the fuzzy mathematical evaluation model, it establishes aperformance assessment model of wind turbine by SCADA data. The main contentscomplete the following steps: First, this article calculates index weight by the greysystem theory, and uses variable weight theory to revise modify deviation index. Andthen, using the degradation degree index to establish index membership function,And using examples to verify.(4) Putting forward a kind of wind power curtailment evaluation model based on SCADA real-time monitoring data. This method is used to statistical calibrationwind power curve actually, combining with the wind tower full history historicalmeteorological data and the wind farm power data. And according the curvecalculation of wind farm capacity in theory and the actual power calculate actualpower of EMS system, to calculate the wind farm wind power.All The research results above can be applied to wind turbines parallel operationcondition assessment, will provide theoretical reference for wind power grid, and toensure the high reliability of the grid wind turbine. the wind generator to achievelarge-scale grid has important scientific and practical value and research significance.It has important scientifically practical value and research significance to achievelarge-scale grid wind turbines.