雙饋感應發電機在機械暫態的改良式通用模型之建立;Development of a Modified Generic Model of a DFIG-based Wind Turbine Considering Mechanical Transient

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Title:	雙饋感應發電機在機械暫態的改良式通用模型之建立;Development of a Modified Generic Model of a DFIG-based Wind Turbine Considering Mechanical Transient
Authors:	胡毅亮;HU, YI-LIANG
Contributors:	電機工程研究所
Keywords:	傳動軸及槳距角控制;雙饋式感應發電機;複雜模型;通用模型;抗飽和功能;drive train and pitch control;doubly-fed induction generator;complex model;generic model;anti-windup mechanism
Date:	2017
Issue Date:	2019-07-17
Publisher:	電機工程研究所
Abstract:	近十年來，風力發電在電網的占比大幅地增加。如此大量的風能併入電網，讓電網的操作人員在維持電網的運轉穩定性這一方面，面臨了諸多挑戰。為了模擬及分析大量風能併入大型電力系統所造成的影響，風力發電機模型的結構及準確度就變得非常重要。若將風力發電機的複雜模型應用於電力系統的穩態運轉及動態穩定度分析，需要花費較長的計算時間，也會加重電腦計算的負擔。因此，擁有簡化的結構及適度的準確度之通用模型已經被提出，用以模擬各種類型的風力發電機。本研究的風機通用模型及複雜模型是根據目前市面上最普遍的雙饋式感應風力發電機所建立的。為了確保本研究建立的風機模型能夠模擬實際風機的電氣及機械特性，傳動軸以及含抗飽和功能的槳距角控制必須被納入模型。此外，本研究亦考慮風速變動造成的機械暫態，以確保風機模型的完整性。本研究將風機的複雜模型視為參考標準，進行通用模型及複雜模型兩者之間的比較。本研究的模擬結果證明在調整通用模型的數個重要參數之後，通用模型和複雜模型兩者的動態響應及特性會非常相近。 Over the last decade, the wind power penetration has increased substaintially because of the environmental consideration. With the integration of so much wind power generating capacity, the system operators are facing the challenges of maintaining the power system stability. Thus, the structure and accuracy of the wind turbine (WT) model are critical to the simulation and analysis of the large-scale power system. The use of the complex model to analyze the steady-state operation and dynamic stability of the power system requires long computation time and heavy computation burden. Accordingly, the generic models of the various WTs with the simplified structure and the adequate accuracy have been developed. This work develops both generic and complex WT models that are based on the doubly-fed induction generator (DFIG). The DFIG-based WT, which is the so-called type-3 WT, is the most popular in the world nowadays. To ensure that the developed generic and compex models can represent both electrical and mechanical characteristics of a real WT, the drive train and the pitch control with the anti-windup mechanism are included. Also, the mechanical transient due to the wind speed change is considered to make the both models more complete. This work compares the developed generic model with the developed complex model. Considering the complex model as the reference, several parameters of the generic model are adjusted. The simulation results demonstrate that the developed generic model of the type-3 WT reasonably approximates the developed complex model.
Appears in Collections:	[電機工程研究所] 學位論文

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