Analysis and solutions for bulk system voltage instability

Brownell, G. C.; Clark, H.K.

doi:10.1109/67.31829

Cited by 34 publications

(4 citation statements)

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“…In this method, the grid is represented by the DC model, and the traditional load distribution is performed assuming that the bus loads are independent of each other. Reference [17] upgrades this model for normal, short-term and long-term operating conditions. Reference [18] has used the point estimation method and studies on networks with several wind farms with different degrees of dependence.…”

Section: Load Modelingmentioning

confidence: 99%

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Risk-Based Capacitor Placement in Distribution Networks

Falaghi

Ramezani

Elyasi³

et al. 2022

Electronics

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In this paper, the problem of sizing and placement of constant and switching capacitors in electrical distribution systems is modelled considering the load uncertainty. This model is formulated as a multicriteria mathematical problem. The risk of voltage violation is calculated, and the stability index is modelled using fuzzy logic and fuzzy equations. The instability risk is introduced as the deviation of our fuzzy-based stability index with respect to the stability margin. The capacitor placement objectives in our paper include: (i) minimizing investment and installation costs as well as loss cost; (ii) reducing the risk of voltage violation; and (iii) reducing the instability risk. The proposed mathematical model is solved using a multi-objective version of a genetic algorithm. The model is implemented on a distribution network, and the results of the experiment are discussed. The impacts of constant and switching capacitors are assessed separately and concurrently. Moreover, the impact of uncertainty on the multi-objectives is determined based on a sensitivity analysis. It is demonstrated that the more the uncertainty is, the higher the system cost, the voltage risk and the instability risk are.

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Section: Load Modelingmentioning

confidence: 99%

“…The stability membership function curve is shown in Figure 6. In this figure, the curve below the stability membership function is obtained for different values of α using Equations ( 16) and (17). In this figure, the allowable stability limit is shown as the definite number SI t .…”

Section: Instability Risk Analysismentioning

confidence: 99%

Risk-Based Capacitor Placement in Distribution Networks

Falaghi

Ramezani

Elyasi³

et al. 2022

Electronics

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“…As bibliografias [1][2] destacam que este fenômeno é causador de severas consequências nos sistemas elétricos. Por isto, é de vital importância o estudo de métodos que permitam uma análise adequada do problema, permitindo a realização de ações e medidas corretivas que evitem a ocorrência deste fenômeno.…”

Section: Considerações Iniciaisunclassified

Análise de contingências com a ajuda de ferramentas de estabilidade de tensão: Propostas de ações corretivas empregando geração distribuída

Martínez¹,

Souza²

2021

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“…Así, si la potencia se aproxima al límite permitido por el sistema la solución tiende a la curva que define el determinante del jacobiano nulo y el proceso numérico puede presentar problemas de inestabilidad. El hecho de alcanzar la potencia límite se refleja en una caída de la tensión que se denomina colapso de tensiones, [33], [34], [35] y [36].…”

Section: 1unclassified

Estudio de la formulación y resolución del problema del flujo armónico de cargas

Sapera¹

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La tesis estudia el problema del flujo armónico de cargas desde dos puntos de vista. La formulación del problema del flujo armónico de cargas analizando los distintos métodos existentes en la bibliografía y desarrollando una formulación completa del mismo. Y la resolución numérica del sistema no lineal planteado en la formulación. Analizando los distintos métodos numéricos existentes en la bibliografía y sus problemas de convergencia. Y desarrollando un nuevo método numérico, denominado método de h-newton, que ofrece rapidez y seguridad en la convergencia. Además se han caracterizado las soluciones falsas para los nudos de tipo p-q, p-v y no lineales.

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Analysis and solutions for bulk system voltage instability

Cited by 34 publications

References 1 publication

Risk-Based Capacitor Placement in Distribution Networks

Risk-Based Capacitor Placement in Distribution Networks

Análise de contingências com a ajuda de ferramentas de estabilidade de tensão: Propostas de ações corretivas empregando geração distribuída

Estudio de la formulación y resolución del problema del flujo armónico de cargas

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