Technique for voltage stability assessment using newly developed line voltage stability index

Arya, L. D.; Choube, S.C.; Shrivastava, Manish

doi:10.1016/j.enconman.2007.06.018

Cited by 38 publications

(22 citation statements)

References 10 publications

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“…Neste caso, a análise pode ser tratada como um problema linear. As inferências sobre o sistema são baseadas na análise do comportamento do ponto de equilíbrio, mais especificamente, a partir da análise da matriz jacobiana (J 0 ) das equações de potência nodais do sistema, constituindo um problema de fluxo de potência, formulado via método de NewtonRaphson [1,8]. Deste modo, a partir da análise da matriz jacobiana J 0 , pode-se inferir sobre a estabilidade do sistema.…”

Section: Introductionunclassified

“…Esta tem sido a forma abordada na maioria das referências bibliográficas pertinentes. Neste artigo, propõe-se o desenvolvimento de um sistema neural para execução do diagnóstico da estabilidade (de caráter estático) de tensão de sistemas de energia [1,8]. O funcionamento das redes neuraisé constituído por duas fases fundamentais: treinamento e análise.…”

Section: Introductionunclassified

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Análise de Estabilidade de Tensão de Sistemas Elétricos Usando uma Rede Neural Artmap Fuzzy

Isoda¹,

Lotufo²,

Lopes³

et al. 2008

TEMA - Tendências Em Matemática Aplicada E Computacional

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Resumo. Apresenta-se, neste trabalho, uma nova metodologia para o diagnóstico da estabilidade de tensão estática de sistemas elétricos de potência. Esta metodologia refere-se a um sistema neural de inferência baseado em uma arquitetura neural ARTMAP fuzzy, cujo treinamentoé realizado a partir de uma base de dados gerada, via simulação, usando-se um programa computacional: cálculo de fluxo de potência, margem de segurança e montagem da base de dados (que constitui os estímulos de entrada / saída da rede neural). Este sistema se destaca por apresentar resultados precisos com alta rapidez de resposta, o que permite, aos usuários, trabalhar com mais flexibilidade em ambiente em que modificações estruturais são requeridas (situação real de operação dos sistemas), se comparadasàs demais redes neurais. Como forma de ilustrar a estrutura neural proposta, apresenta-se um aplicação considerando-se um sistema elétrico de potência composto por 45 barras, 72 linhas de transmissão e 10 máquinas síncronas.Palavras-chave. Sistemas elétricos de potência, estabilidade de tensão, teoria da ressonância adaptativa.

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Section: Introductionunclassified

Análise de Estabilidade de Tensão de Sistemas Elétricos Usando uma Rede Neural Artmap Fuzzy

Isoda¹,

Lotufo²,

Lopes³

et al. 2008

TEMA - Tendências Em Matemática Aplicada E Computacional

View full text Add to dashboard Cite

show abstract

“…This level in [20] is intended to be around 8%-15% below the lowest normal voltage, and the best place for load shedding is the bus with the highest participation factor. In [23], this level was obtained such that a 5% load margin was left before the divergence of the load flow.…”

Section: Control Actionmentioning

confidence: 99%

“…In [22], undervoltage load shedding was performed by using the load flow model. In [23], the stability limit was improved with the help of the impedance relay, line voltage stability index, undervoltage load shedding, and shunt compensation of the system voltage. The goal in [24,25] was to improve voltage stability based on static analysis and with the use of FACT devices.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the maximum loadability point of a power system after third zone of distance relay corrective actions

Moravej¹,

Bagheri²

2016

Turk J Elec Eng & Comp Sci

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Abstract:In this paper, the operation of a system and distance relay is improved during voltage instability by using an improved strategy. After detecting the voltage instability, the third zone is blocked. However, the system is prone to voltage collapse. Shunt capacitor compensation and a load shedding scheme can be used to protect the system from voltage collapse conditions. Load shedding plans can be performed based on a reduction in the power flow in the line where the relay is located. The reason is that the minimum eigenvalue of the load flow Jacobian (reduced and unreduced Jacobians) is increased and the static voltage stability is improved. After the shunt capacitor compensation and load shedding, the relay margin becomes positive, impedance comes out from the third zone, and the relay does not need to remain blocked. The maximum loadability point (MLP) is increased by performing a control action in the system. To accomplish this strategy, the 14-bus IEEE test system is used.

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“…In order to determine the system voltage stability status, various indices have been developed [36][37][38]. Voltage stability analysis can be categorized as dynamic analysis and static analysis uses static voltage stability indices (SVSI).…”

Section: Introductionmentioning

confidence: 99%

Boundary Detection and Enhancement of Islanding Operation Investigation Under Fault Condition

Pouryekta¹,

Ramachandaramurthy²,

Padmanaban³

et al. 2017

Preprint

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Distribution systems can form islands when faults occur. Each island represents a subsection with variable boundaries subject to the location of a fault(s) in the system. A subsection with variable boundaries is referred to as island in this paper. For operation in autonomous mode, it is imperative to detect the island configurations and stabilize these subsections. This paper presents a novel scheme for the detection of islanding boundaries and stabilizing the system during autonomous operation. In the first stage, a boundary detection method is proposed to detect the configuration of the island. In the second stage a dynamic voltage sensitivity factor (DVSF) is proposed to assess the dynamic performance of the system. In the third stage, a wide area load shedding program is adopted based on DVSF to shed the load in weak busbars and stabilize the system. The proposed scheme is validated and tested on a generic 18-bus system using a combination of EMTDC/PSCAD and MATLAB softwares.

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Technique for voltage stability assessment using newly developed line voltage stability index

Cited by 38 publications

References 10 publications

Análise de Estabilidade de Tensão de Sistemas Elétricos Usando uma Rede Neural Artmap Fuzzy

Análise de Estabilidade de Tensão de Sistemas Elétricos Usando uma Rede Neural Artmap Fuzzy

Assessment of the maximum loadability point of a power system after third zone of distance relay corrective actions

Boundary Detection and Enhancement of Islanding Operation Investigation Under Fault Condition

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