Real-time modeling and model validation of synchronous generator using synchrophasor measurements

Abstract

This paper presents a novel real-time autonomous dynamic modeling, validation and tuning of a synchronous generator using Real Time Digital Simulator (RTDS) (synchronous generator and controls), synchrophasor capable relay and IEC 61850 protocol. Also, with a unique testbed the paper discusses a method to; a) use synchrophasor capable relays for measuring the voltage and current from the generator and transferring that information to RTDS using IEC 61850 protocol, b) compare voltages and currents of the dynamic model running in real-time and c) generator excitation auto tuning to correct model changes. The advantages of the proposed method are that real-time dynamic model developed can be tuned with the help of real measurements for any system parametric or model issues. This allows dynamic model validation and control using real-time sensors such as Phasor Measurement Units (PMU's).