Access to EMTP user presentations, webinars, and slide deck presentations.
58 presentations for line:
Author(s): Moez Belhaouane, L2EP-Ecole Centrale de Lille
Type:Technical Presentation
Date: 2020-11-20
Abstract
<h2 class="title">EMTP Europe User Conference 2019 </h2> <p class="tagline"><b>The EMTP User Conference pres... see moreentations are now available online!</b></p> <p id="text-intro"><b>Electromagnetic Transients (EMT) Model Design Based on Modular Multilevel Converter Mockup</b><br> A detailed EMT model for MMC (Modular Multilevel Converter) has been realized using EMTP software. The aim is to present the modelling process, from the identification of the MMC element parameters, to the conception of the measurement process. The last part of the presentation will compare the EMTP model to the experimental behavior for different operating points.
Author(s): Manuel Martinez & Paul Poujade, EDF
Type:Technical Presentation
Date: 2020-11-20
Abstract
<h2 class="title">EMTP Europe User Conference 2019 </h2> <p class="tagline"><b>The EMTP User Conference pres... see moreentations are now available online!</b></p> <p id="text-intro"><b>Transformer Energization Study Case with PAMSUITE</b><br> A number of EMTP studies require parametric simulations. It is namely the case for transformer energization where many uncertain parameters can greatly influence the simulation results. This presentation will show how these kinds of studies can be quickly and easily carry out with PAMSUITE, the EMTP toolbox for parametric studies.
Author(s): Ulas Karaagac, Hong Kong Polytechnic University
Type:Technical Presentation
Date: 2020-11-20
Abstract
<h6 class="text-black" style="padding-bottom: 30px; padding-top: 30px; text-align: justify;">Speaker: <strong>Ulas Karaagac</stro... see moreng>, <em>Hong Kong Polytechnic University</em></h6> <p class="text-black">Subsynchronous control interaction (SSCI) is the interaction between the power electronics control and the series compensated transmission system that occurs at frequencies below the system nominal frequency. SSCI may occur between the doubly-fed induction generator (DFIG) control system and the series compensated transmission line, to which the wind park (WP) is connected. Not only the DFIG control system parameters, but also the WP operating conditions have significant impact on SSCI.<br><br>This presentation will demonstrate the impact of WP operating conditions and DFIG control system parameters on SSCI. Guidelines will be also presented for modifying the DFIG control system parameters to ensure safe operation and acceptable transient responses due to faults. In addition, the accuracies of various analytical tools used for SSCI problem identification will be discussed.</p>
Author(s): Ilhan Kocar, Polytechnique Montréal
Type:Technical Presentation
Date: 2020-11-20
Abstract
<h6 class="text-black" style="padding-bottom: 30px; padding-top: 30px; text-align: justify;">Speaker: <strong>Ilhan Kocar</strong... see more>, <em>Polytechnique Montréal</em></h6> <p class="text-black">The new WB model encapsulates many improvements including state-of-the-art research results. It eliminates the modeling problems encountered with the existing universal line model (ULM) approach.<br> In the new model, there is no limitation on the number of conductors. For symmetric coaxial cable systems with several cables, numerical problems are avoided by using the new cable correction function. The newly added DC correction scheme together with frequency band partitioning ensures high precision both at low frequencies and high frequencies. Frequency partitioning also improves the numerical conditioning of the system of equations. Unrealistic delays are avoided thanks to the new routines for the identification and adjustment of time delays. The delay adjustment is a search routine with boundaries for optimized fitting.<br><br> The state space formulation in time domain is reformulated using a precise discrete integration method. It minimizes the numerical integration and interpolation errors. This allows achieving stable simulations with larger time steps. The object oriented programming approach with vectorized variables and new memory allocation routines significantly improves the simulation speed and use of memory. The new initialization routines allow seamless transition from steady state solution into time domain simulations.</p></div>
Author(s): Sébastien DENNETIERE, RTE – Centre National d’Expertise Réseaux
Type:Technical Presentation
Date: 2020-11-20
Abstract
<h6 class="text-black" style="padding-bottom: 30px; padding-top: 30px; text-align: justify;">Speaker: <strong>Sébastien DENNETIERE&... see morelt;/strong>, <em>RTE – Centre National d’Expertise Réseaux</em></h6> <p class="text-black">A high voltage direct current (HVDC) grid is a power transmission system which consists of multiple HVDC terminals interconnected through DC lines. The advantages of a DC grid are increasing system flexibility and reliability and providing redundancy at a lower cost by sharing resources, resulting in lower power losses. In order to test and compare technical solutions that can be applied on a realistic DC grid, CIGRE B4 Study committee decided to propose a VSC based DC Grid test system with ac and dc parts with all input data suitable for EMT simulation. This first benchmark has been developed in 2014 in EMTP and different simulation tools in order to validate the completeness of data provided in the Technical Brochure #604. The test system has 11 AC/DC VSC converters, 2 DC/DC converters and 2 DC voltage levels (±400kV and ±200kV).<br><br> The main purpose of the test system is to provide a common basis for all CIGRE SC B4 WGs that work on the research of DC grids. This benchmark model generated a high interest. Some limitations on this benchmark (topology, equipment included…) have been identified so far. In order to provide common study platforms to meet the most different HVDC grid study purposes and needs, seven HVDC grid test models have been established by the B4-72 CIGRE WG. These models have been designed to cover most HVDC grid applications including collection, integration and transmissions of onshore/offshore renewable power generation over long distance, LCC-HVDC grids, LCC-VSC hybrid HVDC grids, AC system interconnections for different types of studies with appropriate and applicable sizes. The presentation will address the issues related to the modeling of the largest DC grid test system proposed by this WG. This grid model includes 22 VSC converter stations, 4 LCC converter stations, PV and wind generations. </p>
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