Modelo de impedancia simplificado para transformadores con regulación en carga con un flujo de cargas óptimo

Abstract

This paper presents a multi-objective optimization methodology  for power systems including on-load tap changing (OLTC)  transformers. A simple model for OLTC is developed based on  impedance approach. In this model, the OLTC transformer with  the connected transmission line are represented as a modified  π equivalent circuit as a function in tap ratio. The admittance  matrix of system is amended to include this new equivalent  circuit. A multi-objective optimization related to generation  cost and transmission losses for power systems including  OLTC transformer is developed. Finally, the developed OLTC  transformer model in optimal load flow has been validated  using the standard IEEE 30-bus and IEEE 118-bus test systems