Access to EMTP user presentations, webinars, and slide deck presentations.
15 presentations for converter:
Author(s): Anton Stepanov
Type:Technical Presentation
Date: 2020-12-11
Abstract
<p>Sub-synchronous oscillations are an undesirable phenomenon in power systems. It is associated with the energy exchange between different elements of the system. Power electronics-base... see mored devices, such as windfarms and AC/DC converters are also prone to such oscillations. In this presentation, a case of sub-synchronous oscillations between type 3 wind turbines and MMC-based HVDC transmission is demonstrated and analyzed using EMTP.</p><p>
Overview: - Introduction - System overview - SSO demonstration - Analysis – Conclusions</p>
Author(s): Anton Stepanov, Polytechnique Montréal
Type:Technical Presentation
Date: 2020-11-20
Abstract
<h2 class="title">EMTP USA User Conference 2019 </h2> <p class="tagline"><b>Sub-synchronous oscillations wit... see moreh type 3 wind turbines and MMC-HVDC</b></p> <p id="text-intro">Sub-synchronous oscillations is an undesirable phenomenon in power systems. It is associated with the energy exchange between different elements of the system. Power electronics-based devices, such as windfarms and AC/DC converters are also prone to such oscillations. In this presentation, a case of sub-synchronous oscillations between type 3 wind turbines and MMC-based HVDC transmission is demonstrated and analyzed using EMTP.
Author(s): Pierre Rault, RTE
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>Influence of HVDC Controls on Transient Stability of Synchronous Machines</b><br> With the energy transition in France and in Europe, the transmission grid is strongly impacted by the forthcoming connection of power electronics devices, such as offshore wind farms and HVDC interconnections. These new devices use power electronics converters that generate transients which are usually more complex to analyzed than for standard AC devices, in particular during faults. These phenomena can have an impact on the grid stability.<br> The presentation will focus on the transient stability studies of synchronous generator influenced by power electronics devices. The objective is to compare the critical fault clearing time for different fault locations, fault conditions and different HVDC converter fault ride through control strategies. Generic test cases as well as real scenarios are considered. In this study, the critical time is obtained with bisection method thanks to the new parameter sweep toolbox.
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): 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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