Optimal Capacitor Allocation in a Distribution System Considering Operation Costs

Abstract

This paper proposes the planning method for capacitor installation in a distribution system to reduce the installation costs and minimize the loss of electrical energy. The expected lifetime of devices with moving parts depends on the total number of operations, which affects the replacement period and replacement decisions for aging equipment under a limited budget. In this paper, the expected device lifetimes are included in the formulation, and the optimal operation status of the devices is determined using a genetic algorithm. The optimal numbers and locations for capacitor installation are determined based on the optimal operation status. Simulation results in a 69-bus distribution system show that the proposed technique performs better than conventional methods.

Ubicación óptima de condensadores en sistemas de distribución considerando incertidumbre en la demanda

“…Adicionalmente es posible limitar la inversión total del proyecto (InvMax), por medio de la ecuación (9).…”

“…Su efecto principal es ofrecer un soporte de potencia reactiva, que al ser instalado cerca de la carga, mitiga las caídas en los perfiles de tensión en los tramos de los alimentadores. Como consecuencia de esta estrategia, se tiene el mejoramiento de la cargabilidad de los elementos del sistema y la reducción de pérdidas técnicas de potencia activa Para solucionar este problema, en la literatura especializada se han empleado diversos modelos matemáticos y diferentes técnicas de solución [3][4][5][6][7][8][9][10][11][12].En los estudios de ubicación de condensadores generalmente se emplean diversos flujos de carga para determinar las condiciones operativas del sistema. Los flujos de carga considerados se pueden agrupar en dos tipos: tradicionales (Gauss-Seidel, Newton Raphson y sus variantes, etc.)…”

Simultaneous placement and sizing of renewable DGs and capacitor banks in distribution network

“…In the last decade large number of research papers has been published for optimal location and size selection of DGs [2][3][4][5][6]. Considerable studies have also been devoted towards planning of capacitor banks in distribution network [7][8][9][10]. However, few recent articles focus on optimal placement and sizing of DGs along with capacitor banks in distribution network [11][12][13][14].…”

Power loss reduction for electric vehicle penetration with embedded energy storage in distribution networks

“…Some researchers concentrate on installing capacitors for reactive power optimization [4]. Some researchers use an algorithm for optimal location selection to reduce active power losses [5], others to remove load imbalances in the radial network for loss reduction [6].…”