Optimal location of regulating transformer taps to minimize losses in the electrical system

Walter Fabián Topa-Caseres; Carlos Quinatoa; Josué Ortiz

Autores/as

Topa-Caseres Walter Fabián Technical University of Cotopaxi. Latacunga, Ecuador.
Quinatoa Carlos Technical University of Cotopaxi. Latacunga, Ecuador.
Ortiz Josué Japan University Institute. Quito, Ecuador.

Palabras clave:

Optimization, nonlinear, power flow, loss electric, transformer, regulator

Resumen

DOI: https://doi.org/10.46296/ig.v8i15.0232

Abstract

The electric power system have lines, reactor, regulator voltage, transformer regulator and other elements. These are necessary to carry the energy towards demand electric. The system operate with dispatch economic (DE) where it has the objective function and constrains. However, they DE do not necessary include the minimization power losses that are very import because reduce operation cost. Therefore, in this paper it is realize an optimal location of regulating transformer taps to minimize losses in the electrical system using convex optimization in power flow equations. For this suppose, it take account the bus injection model where it obtain all equations necessary. Then, the model propose are implemented with IEEE 14 bust system test as validation between Digsilent Power Factory and the model implement is of the system electric of Quito city in Ecuador. The result of minimizing lose in optimization process is 0.11 MW.

Palabras clave: Optimization, nonlinear, power flow, loss electric, transformer, regulator.

Resumen

El sistema eléctrico de potencia cuenta con líneas, reactancia, regulador de voltaje, transformador regulador y otros elementos. Estos son necesarios para llevar la energía hacia la demanda eléctrica. El sistema opera con despacho económico (DE) donde tiene la función objetivo y restricciones. Sin embargo, los DE no necesariamente incluyen la minimización de pérdidas de potencia que son muy importantes porque reducen el costo de operación. Por lo tanto, en este documento se realiza una ubicación óptima de las tomas de regulación del transformador para minimizar las pérdidas en el sistema eléctrico utilizando la optimización convexa en las ecuaciones de flujo de potencia. Para este supuesto, se toma en cuenta el modelo de inyección de bus donde se obtienen todas las ecuaciones necesarias. Luego, el modelo propuesto se implementa con la prueba del sistema de bus IEEE 14 como validación entre Digsilent Power Factory y el modelo implementado es del sistema eléctrico de la ciudad de Quito en Ecuador. El resultado de minimizar la pérdida en el proceso de optimización es de 0,11 MW.

Keywords: Optimización, no lineal, flujo de potencia, pérdida eléctrica, transformador, regulador.

Información del manuscrito:
Fecha de recepción: 03 de octubre de 2024.
Fecha de aceptación: 19 de diciembre de 2024.
Fecha de publicación: 10 de enero de 2025.

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