Multi-objective approach for load shedding based on voltage stability index consideration

Kanimozhi, R.; Selvi, K.; Balaji, K.

doi:10.1016/j.aej.2014.09.005

Cited by 28 publications

(16 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this regard, these indicators may seem to be a proper tool for voltage stability assessment. Nevertheless, in the sequel, it will be shown that these indices have a major drawback, which is not considered in the literature . To explain this drawback, consider the simple network shown in Figure A, which includes three transmission lines connected in series.…”

Section: Improved Lsz Indicatorsmentioning

confidence: 99%

A comprehensive assessment to propose an improved line stability index

Yari

Khoshkhoo

2019

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary So far, several line stability indices have been introduced and used for evaluating voltage stability status of power systems. The objective of this paper is to propose a comprehensive assessment of these indices and also to propose a modified line stability index to accurately assess the stability status of networks in different situations. To this purpose, the performance of several line indices at different conditions is analyzed. Also, to categorize system states to normal, alert, and emergency, proper thresholds are proposed for these indices. It will be shown that although line indices are able to properly assess the stability of a two‐bus system, they cannot detect the stability status in real networks. Therefore, a modified index has been proposed, which can accurately assess the stability status of power systems. The static and dynamic simulation results performed in the Institute of Electrical and Electronics Engineer (IEEE) 39‐ and 118‐bus test systems verify the performance of the proposed index.

show abstract

Section: Improved Lsz Indicatorsmentioning

confidence: 99%

A comprehensive assessment to propose an improved line stability index

Yari

Khoshkhoo

2019

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

show abstract

“…In recent years, the voltage instability problem has become an imperative research area in the field of power system due to the advent of competitive electricity market inflicting towards an intense and complex planning that shove the system to operate near to their stability limits [1]. In such situations, and for better operation of the system, the voltage stability margins (VSM) and control actions must be determined in an on-line manner.…”

Section: Introductionmentioning

confidence: 99%

The Amalgamation of SVR and ANFIS Models with Synchronized Phasor Measurements for On-Line Voltage Stability Assessment

et al. 2017

View full text Add to dashboard Cite

This paper presents the application of support vector regression (SVR) and adaptive neuro-fuzzy inference system (ANFIS) models that are amalgamated with synchronized phasor measurements for on-line voltage stability assessment. As the performance of SVR model extremely depends on the good selection of its parameters, the recently developed ant lion optimizer (ALO) is adapted to seek for the SVR's optimal parameters. In particular, the input vector of ALO-SVR and ANFIS soft computing models is provided in the form of voltage magnitudes provided by the phasor measurement units (PMUs). In order to investigate the effectiveness of ALO-SVR and ANFIS models towards performing the on-line voltage stability assessment, in-depth analyses on the results have been carried out on the IEEE 30-bus and IEEE 118-bus test systems considering different topologies and operating conditions. Two statistical performance criteria of root mean square error (RMSE) and correlation coefficient (R) were considered as metrics to further assess both of the modeling performances in contrast with the power flow equations. The results have demonstrated that the ALO-SVR model is able to predict the voltage stability margin with greater accuracy compared to the ANFIS model.

show abstract

“…Therefore, these UVLS strategies do not guarantee that the operating point after shedding is adequate in terms of voltage stability. A paper related with this is presented in Kanimozhi et al (2014), where the minimization of the total load shed and the sum of a "New Voltage Stability Index (NVSI)" were considered as objectives to restore the power flow solvability. The same index was also integrated in a load shedding scheme (Sonar & Mehta, 2015), based on swarm intelligence-based optimization techniques.…”

Section: Introductionmentioning

confidence: 99%

Optimal under voltage load shedding based on voltage stability index

López¹,

Pérez²,

Rodríguez³

2016

ing.inv.

View full text Add to dashboard Cite

This paper presents a methodology for under voltage load shedding using a metaheuristic optimization technique and a stability criterion. Two strategies are proposed to find the minimal size and location of load to shed for the recovery of normal operation conditions. The first one is based on a classical criterion for the under voltage load shedding, identifying the load to disconnect by considering bus voltage level; the second includes a simplified voltage stability index SVSI, which identifies critical buses in the system. The proposed methodology is implemented in an IEEE 14 bus test system, considering a heavy loading condition with and without contingency to validate its efficiency.Keywords: Load shedding, voltage stability, particle swarm optimization. RESUMENEn este artículo se presenta una metodología para realizar el deslastre de carga por baja tensión utilizando una técnica de optimización metaheuristica y criterios de estabilidad. Se proponen dos estrategias para encontrar tanto la cantidad mínima de carga a deslastrar como su localización en el sistema, para recuperar las condiciones normales de operación. El primero está basado en el criterio clásico del deslastre de carga por baja tensión, donde se identifica la carga a desconectar considerando los niveles de tensión en las barras del sistema; el segundo incluye el índice simplficado de estabilidad de tensión SVSI, el cual identifica las barras críticas en el sistema. La propuesta se valida en el sistema de prueba IEEE de 14 barras cuando es sometido a varias perturbaciones.Palabras clave: Deslastre de carga, estabilidad de tensión, optimización por enjambre de partículas.

show abstract

Multi-objective approach for load shedding based on voltage stability index consideration

Cited by 28 publications

References 14 publications

A comprehensive assessment to propose an improved line stability index

A comprehensive assessment to propose an improved line stability index

The Amalgamation of SVR and ANFIS Models with Synchronized Phasor Measurements for On-Line Voltage Stability Assessment

Optimal under voltage load shedding based on voltage stability index

Contact Info

Product

Resources

About