Adaptation of the Overcurrent Function of the Overload Function in TL Due to the Entry of a New Generation - Dynamic Analysis of a Particular Case

Abstract

This work develops a methodology for estimating the thermal damage curve for 132 kV conductors in transient state. The purpose of this calculation will be to propose, later, overload settings implemented in the overcurrent function since in an electrical system there can always be old protections that do not have that function. The study is based on an investigation carried out for a real case of the Provincial Interconnected System (PIS) of San Juan, Argentina. The PIS has a particularly conflictive node where a large amount of conventional hydroelectric generation and PV plants are concentrated for a total of close to 300 MW. During the study, the damage curves for each one of the drivers suspected of overloads will be calculated and settings will be proposed for the overcurrent function in their protections relay in order to avoid irreparable damage. At the same time, possible generation disconnection schemes are analyzed as alternatives to drivers overload scenarios.