Wind power plant wind energy resource evaluation method and system based on numerical simulation

CN121787336AActive Publication Date: 2026-04-03POWERCHINA HUADONG ENG CORP LTD +2
View PDF 3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-05
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

In existing technologies, the accuracy and adaptability of wind farm wind energy resource assessment are poor, mainly because the wake expansion rate parameter is fixed and cannot reflect the time-varying characteristics of atmospheric turbulence, and the power signal saturation in the high wind speed constant power operation area makes it difficult to invert the true wake characteristics.

Method used

By acquiring the real-time yaw angle, active power, and blade pitch angle of all units in the wind farm, the associated pairs of units are screened out, a state transition drag matrix is ​​constructed, linear programming is performed to determine the dynamic wake expansion rate parameter, the influence of geometric yaw is removed, and the turbulence mixing capacity is quantified.

Benefits of technology

It enables accurate wind energy resource assessment across the entire wind speed range, dynamically adjusts wake expansion rate parameters, and improves the accuracy and adaptability of the assessment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121787336A_ABST
    Figure CN121787336A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of wind power plant resource management, in particular to a wind power plant wind energy resource evaluation method and system based on numerical simulation, and the method comprises the steps: firstly determining a thrust state index according to the active power, the generator speed and the blade variable pitch angle, and introducing the variable pitch angle to compensate the saturation effect of the active power signal of a high wind speed section; the wake flow characteristics of the whole wind speed section are effectively extracted; further, a state transition resistance matrix is constructed according to the thrust state index distribution deviation condition between the upstream unit and the downstream unit, linear programming is carried out according to the state transition resistance matrix, the minimum total transmission cost is calculated, and interference of geometric yaw on wake flow recovery observation is stripped through the constraint effect of the resistance matrix; the real atmospheric turbulence mixing capability is quantified; and finally, a more accurate dynamic wake flow expansion rate parameter is dynamically determined based on the minimum total transmission cost, so that the accuracy of wind power plant wind energy resource evaluation according to the dynamic wake flow expansion rate parameter is higher.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Wind power plant wake flow prediction method, model and system

    CN116227357A

  • Real-time dynamic wake flow field simulation modeling method and system

    CN117494594A

  • Wind turbine generator array wake flow management method and system for Doppler laser wind measurement

    CN119532106A