Fast methods for voltage stability analysis and control selection considering parameter uncertainties
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da USP |
Texto Completo: | https://doi.org/10.11606/T.18.2022.tde-27042022-162432 |
Resumo: | With the ongoing load increase in current power systems, voltage stability analysis has become an essential tool to ensure that a power system can withstand different loading variations. In this scenario, this work deals with parameter uncertainties and control selection in voltage stability analysis of power systems. The main contributions of this thesis are related to: • Modelling: – A new static power system model is proposed. The new model enables na unified analysis of different voltage instability mechanisms. Specifically, all static bifurcations are transformed into saddle-node bifurcations. – A new model to take parameter uncertainties into account is proposed, where parametric variations are represented by a Brownian motion and the uncertainty region is described by a cone. • Voltage stability margin computation: – A new method for contingency ranking is proposed. The proposed method is both fast and accurate in computing the contingency ranking, and is able to compute different bifurcation types. – A new method is proposed to compute the voltage stability margin. The method is robust to different parameter variation scenarios and is able to compute diferente bifurcation types. The method is also fast, with a execution time equivalent to a few continuation power flow computations.• Voltage stability margin control: A new method is proposed to select control actions which aim for increasing the voltage stability margin. The method takes uncertainties into account, and results show that proposed method is fast on selecting a small number of control actions that are sufficient to increase the voltage stability margin to a predefined value.All propositions were tested by means of several simulations on different test-systems. Implementation results corroborate that the proposed methods are fast and robust, with potential for online voltage stability assessment of large-scale power systems. |
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info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis Fast methods for voltage stability analysis and control selection considering parameter uncertainties Métodos rápidos de análise de estabilidade de tensão e seleção de controles considerando incertezas de parâmetros 2022-03-11Luís Fernando Costa AlbertoMarcos Julio Rider FloresJoão Alberto Passos FilhoAntonio Carlos Zambroni de SouzaGlauco Nery TarantoLucas Sales NevesUniversidade de São PauloEngenharia ElétricaUSPBR Bifurcation surface Estabilidade de tensão Incertezas paramétricas Margem de estabilidade de tensão Parameter uncertainties Preventive control selection Seleção de controles preventivos Superfície de bifurcações Voltage stability Voltage stability margin With the ongoing load increase in current power systems, voltage stability analysis has become an essential tool to ensure that a power system can withstand different loading variations. In this scenario, this work deals with parameter uncertainties and control selection in voltage stability analysis of power systems. The main contributions of this thesis are related to: • Modelling: – A new static power system model is proposed. The new model enables na unified analysis of different voltage instability mechanisms. Specifically, all static bifurcations are transformed into saddle-node bifurcations. – A new model to take parameter uncertainties into account is proposed, where parametric variations are represented by a Brownian motion and the uncertainty region is described by a cone. • Voltage stability margin computation: – A new method for contingency ranking is proposed. The proposed method is both fast and accurate in computing the contingency ranking, and is able to compute different bifurcation types. – A new method is proposed to compute the voltage stability margin. The method is robust to different parameter variation scenarios and is able to compute diferente bifurcation types. The method is also fast, with a execution time equivalent to a few continuation power flow computations.• Voltage stability margin control: A new method is proposed to select control actions which aim for increasing the voltage stability margin. The method takes uncertainties into account, and results show that proposed method is fast on selecting a small number of control actions that are sufficient to increase the voltage stability margin to a predefined value.All propositions were tested by means of several simulations on different test-systems. Implementation results corroborate that the proposed methods are fast and robust, with potential for online voltage stability assessment of large-scale power systems. Com o aumento de carga nos sistemas de potência atuais, estabilidade de tensão se tornou uma ferramenta essencial para garantir que um sistema de potência pode suportar diferentes variações de carregamento. Neste contexto, este trabalho aborda incertezas de parâmetros e seleção de controles na análise de estabilidade de tensão de sistemas de potência. Esta tese apresenta contribuições relacionadas a: • Modelagem: – A proposição de um novo modelo estático para sistemas de potência. O novo modelo permite uma análise unificada de diferentes mecanismos que podem levar à instabilidade de tensão. Especificamente, todas as bifurcações estáticas são transformadas em bifurcações sela-nó. – Um modelo para tratamento de incertezas é proposto. As variações paramétricas são representadas por um movimento Browniano e a região de incertezas é representada por um cone. • Cálculo da margem de estabilidade de tensão: – Um novo método para análise de contingências foi desenvolvido. O método proposto é preciso no cálculo do ranqueamento das contingências, e é capaz de detectar diferentes tipos de bifurcação. – Um novo método de cálculo da margem de estabilidade de tensão foi proposto. O método é robusto a diferentes cenários de variação paramétrica e é capaz de detectar diferentes tipos de bifurcação. O método também é rápido, com um tempo de execução equivalente a alguns cálculos de fluxo de potência continuado. • Controle da margem de estabilidade de tensão: Um novo método foi proposto para a seleção de ações de controle com o objetivo de aumentar a margem de estabilidade de tensão. O método leva incertezas em consideração, e resultados mostram que o método proposto pode rapidamente selecionar um pequeno conjunto de ações de controle capaz de aumentar a margem para um valor pré-definido. Todas as proposições foram testadas por meio de diversas simulações em diferentes sistemas-teste. Resultados de implementação corroboram que os métodos propostos são rápidos e robustos, com potencial para avaliação em tempo real de estabilidade de tensão em sistemas de grande porte. https://doi.org/10.11606/T.18.2022.tde-27042022-162432info:eu-repo/semantics/openAccessengreponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USP2023-12-21T20:16:30Zoai:teses.usp.br:tde-27042022-162432Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212023-12-22T13:23:08.022193Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false |
dc.title.en.fl_str_mv |
Fast methods for voltage stability analysis and control selection considering parameter uncertainties |
dc.title.alternative.pt.fl_str_mv |
Métodos rápidos de análise de estabilidade de tensão e seleção de controles considerando incertezas de parâmetros |
title |
Fast methods for voltage stability analysis and control selection considering parameter uncertainties |
spellingShingle |
Fast methods for voltage stability analysis and control selection considering parameter uncertainties Lucas Sales Neves |
title_short |
Fast methods for voltage stability analysis and control selection considering parameter uncertainties |
title_full |
Fast methods for voltage stability analysis and control selection considering parameter uncertainties |
title_fullStr |
Fast methods for voltage stability analysis and control selection considering parameter uncertainties |
title_full_unstemmed |
Fast methods for voltage stability analysis and control selection considering parameter uncertainties |
title_sort |
Fast methods for voltage stability analysis and control selection considering parameter uncertainties |
author |
Lucas Sales Neves |
author_facet |
Lucas Sales Neves |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Luís Fernando Costa Alberto |
dc.contributor.referee1.fl_str_mv |
Marcos Julio Rider Flores |
dc.contributor.referee2.fl_str_mv |
João Alberto Passos Filho |
dc.contributor.referee3.fl_str_mv |
Antonio Carlos Zambroni de Souza |
dc.contributor.referee4.fl_str_mv |
Glauco Nery Taranto |
dc.contributor.author.fl_str_mv |
Lucas Sales Neves |
contributor_str_mv |
Luís Fernando Costa Alberto Marcos Julio Rider Flores João Alberto Passos Filho Antonio Carlos Zambroni de Souza Glauco Nery Taranto |
description |
With the ongoing load increase in current power systems, voltage stability analysis has become an essential tool to ensure that a power system can withstand different loading variations. In this scenario, this work deals with parameter uncertainties and control selection in voltage stability analysis of power systems. The main contributions of this thesis are related to: • Modelling: – A new static power system model is proposed. The new model enables na unified analysis of different voltage instability mechanisms. Specifically, all static bifurcations are transformed into saddle-node bifurcations. – A new model to take parameter uncertainties into account is proposed, where parametric variations are represented by a Brownian motion and the uncertainty region is described by a cone. • Voltage stability margin computation: – A new method for contingency ranking is proposed. The proposed method is both fast and accurate in computing the contingency ranking, and is able to compute different bifurcation types. – A new method is proposed to compute the voltage stability margin. The method is robust to different parameter variation scenarios and is able to compute diferente bifurcation types. The method is also fast, with a execution time equivalent to a few continuation power flow computations.• Voltage stability margin control: A new method is proposed to select control actions which aim for increasing the voltage stability margin. The method takes uncertainties into account, and results show that proposed method is fast on selecting a small number of control actions that are sufficient to increase the voltage stability margin to a predefined value.All propositions were tested by means of several simulations on different test-systems. Implementation results corroborate that the proposed methods are fast and robust, with potential for online voltage stability assessment of large-scale power systems. |
publishDate |
2022 |
dc.date.issued.fl_str_mv |
2022-03-11 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://doi.org/10.11606/T.18.2022.tde-27042022-162432 |
url |
https://doi.org/10.11606/T.18.2022.tde-27042022-162432 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo |
dc.publisher.program.fl_str_mv |
Engenharia Elétrica |
dc.publisher.initials.fl_str_mv |
USP |
dc.publisher.country.fl_str_mv |
BR |
publisher.none.fl_str_mv |
Universidade de São Paulo |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações da USP instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Biblioteca Digital de Teses e Dissertações da USP |
collection |
Biblioteca Digital de Teses e Dissertações da USP |
repository.name.fl_str_mv |
Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br |
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1794503086975221760 |