Incorporación de modelos de carga en estado estable para el cálculo de flujos de potencia

Abstract

The following research thesis work corroborates a computational tool for the incorporation of load models in stable states in the Newton Raphson methodology used to solve power flows. To incorporate load models in stable state as voltage functions to solve power flows, three methodologies are used: 1) Node Injection, 2) Successive Flows and 3) Restructuring of Calculated Powers, each methodology allows for the modeling of the load within the power flow by means of four models in a stable state: 1) Polynomial, 2) Exponential, 3) Linear and 4) Induction motor. The mathematical modeling of the load is done using a computer program written in Python 3.5.2, which is a free software offering very complete open access to solve problems based on algorithms. The validation of the results obtained using the above program is done by comparing them with the results obtained using commercial software that analyses and simulates power electric systems such as PSAT and DlgSILENT PowerFactory. The electrical test networks that were used are the standardized IEEE 14-bus, IEEE 30-bus and IEEE 4-bus systems from the book published by Grainger and Stevenson since the results for calculating power flows are public and serve as a reliable reference to carry out quantitative comparisons with the results given by the Python 3.5.2 program. Besides developing the code, a practicum is proposed for the Introduction to Electrical Power Systems Laboratory (IEE6O2) course given at the School of Electrical and Electronic Engineering of the Escuela Politécnica Nacional (National Polytechnic School).