Long-term voltage stability assessment using Quasi-Steady State Simulation in Matlab

A Quasi Steady State Simulator (QSSS) for long term voltage stability assessment has been developed, tested and verified in Matlab. Theory and modelling assumptions behind QSSS are explained, including many elements present in long term voltage stability scenarios. The software was developed to perf...

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Autores Principales: Valverde Mora, Gustavo, Araya Padilla, Eddie
Formato: Artículo
Idioma: Inglés
Publicado: 2015
Materias:
Acceso en línea: http://revistas.ucr.ac.cr/index.php/cienciaytecnologia/article/view/19665
http://hdl.handle.net/10669/14666
id RepoKERWA14666
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spelling RepoKERWA146662017-08-08T18:50:28Z Long-term voltage stability assessment using Quasi-Steady State Simulation in Matlab Long-term voltage stability assessment using Quasi-Steady State Simulation in Matlab Valverde Mora, Gustavo Araya Padilla, Eddie estabilidad de tensión simulaciones de largo alcance simulaciones cuasiestacionarias modelaje de sistemas de potencia A Quasi Steady State Simulator (QSSS) for long term voltage stability assessment has been developed, tested and verified in Matlab. Theory and modelling assumptions behind QSSS are explained, including many elements present in long term voltage stability scenarios. The software was developed to perform large contingencies for N-bus systems with classical representation of generators and motors in stability studies, including simple control models of Automatic Voltage Regulators (AVR), Overexcitation Limiters (OEL) and Load Tap Changer (LTC). The simulator was finally compared to full time domain simulations in small power systems, showing good accuracy and low computational efforts. It was found that QSSS is able to follow the long term evolution of voltages when the system is still short term stable after each discrete change. Un simulador cuasi-estacionario se desarrolló (QSSS: Quasi Steady State Simulator, por sus siglas en Inglés), probó y verificó en Matlab. La teoría y las suposiciones del modelaje detrás del QSSS se explicaron incluyendo la mayoría de elementos presentes en los escenarios de estabilidad de tensión de largo alcance. El software desarrollado para evaluar grandes contingencias, para un sistema de N-barras con la representación clásica de generadores y motores en los estudios de estabilidad, incluyó modelos de control sencillos de reguladores automáticos de tensión (AVR: Automatic Voltage Regulators, por sus siglas en Inglés), limitadores de sobrexcitación (OEL: Overexcitation Limiters, por sus siglas en Inglés) e intercambiadores en derivación bajo carga (LTC: Load Tap Changer, por sus siglas en Inglés). El simulador se comparó con simulaciones detalladas, en pequeños sistemas de potencia, mostrando una buena exactitud y bajo esfuerzo computacional. Se encontró que el QSSS es capaz de seguir la evolución de las tensiones en el largo plazo, cuando el sistema todavía permanece estable en el corto plazo, después de cada cambio discreto. 2015-06-19T16:33:18Z 2015-06-19T16:33:18Z 2015-06-17 11:54:08 2015-06-19T16:33:18Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://revistas.ucr.ac.cr/index.php/cienciaytecnologia/article/view/19665 http://hdl.handle.net/10669/14666 en Revista de Ciencia y Tecnología Vol. 30 Núm. 1 2015 application/pdf
institution Universidad de Costa Rica
collection Repositorio KERWA
language Inglés
topic estabilidad de tensión
simulaciones de largo alcance
simulaciones cuasiestacionarias
modelaje de sistemas de potencia
spellingShingle estabilidad de tensión
simulaciones de largo alcance
simulaciones cuasiestacionarias
modelaje de sistemas de potencia
Valverde Mora, Gustavo
Araya Padilla, Eddie
Long-term voltage stability assessment using Quasi-Steady State Simulation in Matlab
description A Quasi Steady State Simulator (QSSS) for long term voltage stability assessment has been developed, tested and verified in Matlab. Theory and modelling assumptions behind QSSS are explained, including many elements present in long term voltage stability scenarios. The software was developed to perform large contingencies for N-bus systems with classical representation of generators and motors in stability studies, including simple control models of Automatic Voltage Regulators (AVR), Overexcitation Limiters (OEL) and Load Tap Changer (LTC). The simulator was finally compared to full time domain simulations in small power systems, showing good accuracy and low computational efforts. It was found that QSSS is able to follow the long term evolution of voltages when the system is still short term stable after each discrete change.
format Artículo
author Valverde Mora, Gustavo
Araya Padilla, Eddie
author_sort Valverde Mora, Gustavo
title Long-term voltage stability assessment using Quasi-Steady State Simulation in Matlab
title_short Long-term voltage stability assessment using Quasi-Steady State Simulation in Matlab
title_full Long-term voltage stability assessment using Quasi-Steady State Simulation in Matlab
title_fullStr Long-term voltage stability assessment using Quasi-Steady State Simulation in Matlab
title_full_unstemmed Long-term voltage stability assessment using Quasi-Steady State Simulation in Matlab
title_sort long-term voltage stability assessment using quasi-steady state simulation in matlab
publishDate 2015
url http://revistas.ucr.ac.cr/index.php/cienciaytecnologia/article/view/19665
http://hdl.handle.net/10669/14666
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score 11.690286