دانلود رایگان مقاله لاتین نیروگاه بادی از سایت الزویر
عنوان فارسی مقاله:
مدل سازی کامل نیروگاه بادی گذرای الکترومغناطیسی برای مطالعات یکپارچه سازی شبکه
عنوان انگلیسی مقاله:
Complete wind farm electromagnetic transient modelling for grid integration studies
سال انتشار : 2009
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مقدمه انگلیسی مقاله:
1. Introduction
Introduction Distributed energy generation is becoming a larger part of the total generation of power systems worldwide and, in particular, wind energy represents 50% of the total renewable energy in Europe. Aggregate wind power installed in the European Union (EU-27) at the end of 2007 was 56,535 MW, that covers 3.78% of EU-27 electricity consumption [1]. In Spain installed wind power was 15,145 MW, being the second country in the world. Wind generation provides several advantages over other power generation systems, such as no cooling water use, no carbon dioxide emissions, proximity of generation to local loads and unloading of transmission lines. It may be asserted, however, that as installed wind power expands, issues related to integration, stability effects and voltage impacts become increasingly important [2]. Due to this fact, several transmission system operators have defined specifications for connecting wind farms to their networks [3–5]. The purpose of the specifications is to ensure the essential properties for power system operation as regards security of supply, reliability and power quality. These specifications include frequency and voltage quality conditions, active and reactive power control ability, stability and protection requirements in the case of faults in the power system, and fault ride through capability. Regarding transient stability, Eltra specification requires that the interaction between the power system and the wind farm at faults in the power system must be verified by means of simulations, and it is the responsibility of the plant owner to provide the necessary models for these simulations [3]. In this context, it is necessary to develop accurate models of wind farms in order to evaluate their impact and predict the farm’s influence on the dynamic behaviour of the electrical system [6– 11]. With these dynamical models it could be possible to create dif- ficult to test scenarios, such as balanced and unbalanced short-circuits and loss of mains [12–14]. Furthermore, these models could support the design of new protection systems [15], new control algorithms [16–18] and operational strategies to improve their real time exploitation [19], enhancing their collaboration to the support of the electrical grid. Given that a mathematical modelling of wind farms is a must for their grid integration, a first question arises immediately: which is the appropriate model to analyse consistently the impact of wind farms to the surrounding electrical network? Typically, two main wind farm modelling tendencies have been observed in references: the aggregated model and the detailed or multi-machine model. The aggregated approach represents a wind farm by one equivalent machine with re-scaled power capacity [6,7]. This model has been applied to the study of voltage stability of the power system [8] as well as to transient stability [9,11], and it has also been tested for load flow analysis [10,20]. On the other hand, it allows, under certain conditions, the analysis of transient stability of large wind farms [12,13,21] and their control [16]. The drawback of aggregated models is that they do not reflect effects due to the real operation point of each wind generator, such as mutual interactions or power oscillations between wind turbines. But it is often claimed that aggregated models are able to re- flect worst-case scenarios when electrical disturbances affect the normal operation of the wind farm [22]. However, this has resulted not to be exact because they do not describe the general behaviour of wind farms, except in very particular operating conditions [13,19]. To solve this problem several authors have proposed an intermediate detail level where large wind farms are modelled based on wind turbine groups, e.g., an equivalent wind farm for each turbine row [12].
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کلمات کلیدی:
Complete wind farm electromagnetic transient model..|INIS https://inis.iaea.org/search/search.aspx?orig_q=RN:40063411 by I Zubia - 2009 - Cited by 23 - Related articles This paper presents a modelling methodology to analyse the impact of wind farms in surrounding networks. Based on the transient modelling of the ... [PDF]Dynamic Models for Wind Turbines and Wind Power Plants research.iaun.ac.ir/pd/bahador.fani/pdfs/UploadFile_5694.pdf by M Singh - 2011 - Cited by 65 - Related articles wind power plant models that can be shared, used, and improved without ...... They can model fast and slow phenomena: electromagnetic transients (1ms) to ... [PDF]Simulation and verification of transient events in large wind power ... energinet.dk/.../FU1103%20-%20Simulering%20og%20verifikation%20af%20transie... by P Sørensen - 2003 - Cited by 59 - Related articles Abstract Models for wind power installations excited by transient events have ..... tools support simulations with full electromagnetic transient models (EMT),. Lumping and electromechanical transient modeling of large-scale ... ieeexplore.ieee.org/document/6993819/ by J Wang - 2014 - Related articles With the increasing capacity of wind farm merged into the grid, their impact on the ... Previous WTG models mainly based on electromagnetic transient modeling, ... [PDF]Multi-Time-Scale Simulation Tool for Renewable Energy Integration ... www.mdpi.com/2411-5134/2/2/7/pdf by P Chirapongsananurak - 2017 Apr 13, 2017 - power system simulation; solar power generation; wind power .... Electromagnetic transient model: In this paper, the electromagnetic transient ... Harmonics in Offshore Wind Power Plants: Application of Power ... https://books.google.com/books?isbn=3319264761 Jakob Bærholm Glasdam - 2015 - Technology & Engineering Application of Power Electronic Devices in Transmission Systems Jakob Bærholm ... J. Arrillaga, Power Systems Electromagnetic Transients Simulation, 1st edn. ... A. Llombart, Modelling wind farms for grid disturbance studies. Renew. Energy ...
