Dynamic Equivalent Identification of Interconnected Areas Using Disturbance records from Synchro phasor Measurement Units

TL;DR

This paper proposes a method to create a simplified dynamic model of interconnected power system areas using disturbance data from synchrophasor measurements, capturing control system effects for accurate response replication.

Contribution

It introduces a generalized Ward equivalent model incorporating control systems and presents a parameter identification approach based on disturbance records.

Findings

Effective modeling of external areas using disturbance data

Inclusion of control system dynamics improves model accuracy

Validated approach with simulation results

Abstract

In this paper, a methodology for modelling a dynamic equivalent of an external area is presented. The equivalent consists of a generator with series impedance and a parallel load (generalized Ward equivalent), integrating control systems such as the Automatic Voltage Regulator (AVR) and the Speed Regulator (GOV) in a test system known as PST-16. The main objective is to identify the parameters of the control systems and other parameters inherent to the generator so that the response of the equivalent system is similar to the response of the complete system.