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Optimal under voltage load shedding based on voltage stability index
Esquema óptimo de deslastre de carga por baja tensión basado en índice de estabilidad de tensión
DOI:
https://doi.org/10.15446/ing.investig.v36n2.53773Keywords:
Load shedding, voltage stability, particle swarm optimization (en)Deslastre de carga, estabilidad de tensión, optimización por enjambre de partículas (es)
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.
En 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.
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Copyright (c) 2016 Sandra Pérez, Karol López, Luis Rodríguez
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