Small signal stability analysis of grid connected wind energy conversion systems

2011 INTERNATIONAL CONFERENCE ON RECENT ADVANCEMENTS IN ELECTRICAL, ELECTRONICS AND CONTROL ENGINEERING Pub Date : 2011-12-01 DOI:10.1109/ICONRAEECE.2011.6129760

S. Ravichandran, S. Dasan, R. Devi

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引用次数: 3

Abstract

Distributed Generation (DG) is a small form of generation in less than tens of MW range from renewable energy sources. Wind Energy Conversion System (WECS) based on constant speed squirrel cage induction generator is a popular system in India. Small signal stability analysis is very much essential to study the oscillations which normally exist in a power system and leads to unstable operation when small disturbances are applied. Basically, synchronous machine rotor is prone to weakly damped (low frequency) oscillations. But damper winding provides less damping for low frequency oscillations with small amplitude. It justifies the need for Power System Stabilizer (PSS) as a damper for oscillations. So, this work is intended to find the effect of wind energy conversion system on small signal stability conditions of conventional power system with synchronous generators with PSS. Eigen value analysis is conducted after developing a Differential-Algebraic model (DAE) in power balance form and tested on a modified 3 synchronous machine — 9 bus system with constant speed wind turbines.

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并网风能转换系统的小信号稳定性分析

分布式发电(DG)是一种小于几十兆瓦的可再生能源发电形式。基于恒速鼠笼式感应发电机的风能转换系统(WECS)在印度是一种流行的系统。小信号稳定性分析对于研究电力系统中通常存在的振荡是非常必要的，这些振荡在施加小扰动时导致电力系统运行不稳定。基本上，同步电机转子容易产生弱阻尼(低频)振荡。但对于振幅较小的低频振荡，阻尼器绕组的阻尼作用较小。它证明了电力系统稳定器(PSS)作为振荡阻尼器的必要性。因此，本工作旨在研究风能转换系统对带PSS同步发电机的常规电力系统小信号稳定条件的影响。建立了功率平衡形式的微分代数模型(DAE)，并在改进的3同步机- 9母线等速风力发电机组系统上进行了试验，进行了特征值分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2011 INTERNATIONAL CONFERENCE ON RECENT ADVANCEMENTS IN ELECTRICAL, ELECTRONICS AND CONTROL ENGINEERING

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