Access to EMTP user presentations, webinars, and slide deck presentations.
58 presentations for line:
Author(s): Benjamin Marshall, Dr. Oluwole, Hani Saad & Henry Gras
Type:On-demand Webinars
Date: 2021-05-06
Abstract
Transmission connections to offshore wind generation typically consist of multiple technologies supplied by different manufacturers with each tested at the factory, but with limited composite modellin... see moreg and testing of the combined system control and protection performance.
To start to address these technical challenges, the HVDC Centre with the support of ESO connections team commissioned the COMPOSITE project with RTE International to identify practical guidelines and best practices for composite testing and compliance of complex electricity connections, leveraging the experience we share across multi-vendor and multi-device testing we have delivered.
This joint webcast by HVDC Centre in collaboration with RTE International and EMTP® will describe key findings and lessons learned from the COMPOSITE project, including a demonstration of EMTP® modelling the composite models and their test cases.
Speakers:
- Benjamin Marshall – HVDC Technology Manager
- Dr. Oluwole Daniel Adeuyi - Simulation Engineer & Offshore Networks Lead
- Hani Saad - Power system expert engineer
Author(s): Anton Stepanov
Type:On-demand Webinars
Date: 2021-04-08
Abstract
This webinar presents the main features of the EMTP system and the tools designed for the study of high-voltage direct current (HVDC) lines. Examples of modeling the most important components of elect... see moreric power systems are discussed; how to perform flux-distribution calculations, simulate transients, and visualize and interpret calculation results are shown. The tools for modeling the HVDC are discussed using the Modular Multilevel Converter (MMC) analysis and will include: MMC modeling in EMTP, control and protection system analysis, and analysis of transient dynamics.
Translated with www.DeepL.com/Translator (free version)
Author(s): Stefan Kovacevic, Dragan Jovcic, Pierre Rault, Olivier Despouys
Type:Technical Presentation
Date: 2021-03-05
Abstract
It is well-known that an LCC HVDC may deteriorate damping of torsional modes of nearby turbine-generators, and for weak AC grid connections the HVDC may even destabilize the system. There are fewer dy... see morenamic studies with MMC although recent literature indicates that an MMC HVDC connected in close proximity of an LCC HVDC may generally improve stability. However, these studies do not consider the generator-HVDC torsional interactions in the subsynchronous domain (SSTI).
This article investigates the risk of the SSTI in a dual-infeed HVDC system (LCC and MMC) and in comparison to a single HVDC system. The test topology is inspired by the North French system in which a 2 GW LCC HVDC cross-channel link IFA2000 (1986) is connecting the French and the English AC grid. The HVDC is coupled on the French side with a 1.12 GW nuclear generator in the Gravelines plant and experimental studies showed that there may be a substantial risk of SSTI, particularly with respect to the dominant 6.3 Hz torsional mode.
This system is now becoming a hybrid dual-infeed HVDC since a 1 GW MMC HVDC Eleclink is being installed in proximity of the existing LCC HVDC, on the French side. This raises concerns of new SSTI stability issues.
Author(s): L.M. Dután, J.C. Cepeda
Type:Technical Presentation
Date: 2021-03-05
Abstract
This work shows the simulations performed using EMTP before and after tuning the PSS of the Coca Codo Sinclair hydro power plant (1500 MW) of the National Interconnected System of Ecuador. Each machin... see moree in the plant is modeled and its control systems (AVR and PSS) are represented by models created by the user and by library models. The results obtained are compared with real signals taken by the Wide Area Monitoring Systems.
In addition, the analyzes performed are shown, from a point of view of the transient stability of the plant, to determine the adjustment of the single-phase reclosing dead time of the San Rafael – El Inga transmission line, at 500 kV, taking into account the secondary arc model of the EMTP library.
Author(s): Ulas Karaagac
Type:Technical Presentation
Date: 2020-12-14
Abstract
<p>This presentation managed by Ulas Karaagac from the Hong Kong Polytechnic University, show us a Generic EMT-type Model for Wind Parks with Permanent Magnet Synchronous Generator type ... see moreFull Size Converter Wind Turbines. Some presentation of the User Conference are available: https://www.emtp-software.com/support... Abstract : Utilities are under considerable pressure to increase the share of wind energy resources in their generation fleet. With the increasing share of wind energy resources, the dynamic behavior of power systems will change considerably due to fundamental differences in technologies used for wind and conventional generators. There is very little standardization in the ways to model wind turbines (WTs) and wind parks (WPs) in sharp contrast to conventional power plants. Hence, there is an international interest to deliver generic models (i.e. standardized and publicly available) for WTs and WPs that are able to capture all performance aspects as good as manufacturer-specific models. This research developed an electromagnetic transient (EMT) simulation model for full size converter (FSC) WT based WPs that can be used for stability analysis and interconnection studies. The considered topology uses permanent magnet synchronous generator. Although the collector grid and the FSC WTs are represented with their aggregated models, the overall control structure of the WP is preserved. FSC WT and WP control systems include the non-linearities, and necessary transient and protection functions to simulate the accurate transient behavior of WPs.</p>
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