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風電機組仿真模型準確性評估試驗與方法

來源：電工電氣發(fā)布時間：2024-12-02 12:02 瀏覽次數(shù)：256

風電機組仿真模型準確性評估試驗與方法

楊群力¹，潘學萍²，顧晨²，周鵬²

(1 江蘇省戰(zhàn)略與發(fā)展研究中心，江蘇南京 210036；

2 河海大學能源與電氣學院，江蘇南京 211100)

摘要：準確的風電機組模型及參數(shù)是分析高比例風電電力系統(tǒng)動態(tài)行為的前提。討論了風電機組模型驗證的諸多要素，強調風電機組模型結構需要能夠反映正常運行以及低電壓穿越期間的不同動態(tài)，尤其對于電壓跌落及恢復期間的動態(tài)需正確模擬。闡述了仿真模型準確性的評估方法，以某風電機組的實測受擾軌跡為例，討論了 3 種不同偏差指標的優(yōu)缺點。分析了仿真軌跡中可能出現(xiàn)的“毛刺”現(xiàn)象，以及在模型驗證中對“毛刺”現(xiàn)象的處理方法。指出仿真軌跡只是某一特定擾動下的結果，無法全面反映風電機組的全部動態(tài)，故現(xiàn)有的基于時域仿真軌跡進行模型準確性評估的方法具有一定的片面性。

關鍵詞： 風電機組；通用模型；參數(shù)辨識；模型驗證；偏差指標

中圖分類號：TM614 文獻標識碼：A 文章編號：1007-3175(2024)11-0001-07

Experiment and Methods for Assessing the Accuracy of Wind

Turbine Generator Set Simulation Models

YANG Qun-li¹, PAN Xue-ping², GU Chen², ZHOU Peng²

（1 Jiangsu Institute of Strategy and Development, Nanjing 210036, China;

2 College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China）

Abstract: An accurate wind turbine generator set model and its parameters are prerequisites for analyzing the dynamic behavior of power systems with a high proportion of wind power. This paper discusses various factors of wind turbine generator set (WTGS) model validation,emphasizing that the model structure of the WTGS needs to accurately reflect the different dynamics during normal operation and low voltage ride through (LVRT) events, particularly the dynamics during voltage sag and recovery periods. The evaluation method of the accuracy of the simulation model is expounded, and the advantages and disadvantages of three different deviation indexes are discussed by taking the measured disturbed track of a wind turbine as an example. It analyzes the“glitch”phenomenon that may arise in simulation trajectories and presents methods for dealing with such“glitches”during model validation. And points out that simulation trajectories are merely results of a specific disturbance and cannot fully capture all dynamics of the wind turbine generator set. Therefore, existing methods for assessing model accuracy based on time-domain simulation trajectories have a certain one-sidedness.

Key words: wind turbine generator set; general model; parameter identification; model validation; deviation index

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