Validation of a real time digital simulator with published field test

Abstract

This paper presents a vialidation of a real-timie digital simulator (FLTDS) of frequency dependent transmission liine mod- el with a published field test. The real-time transmission line mod- el is based on iMarti's time domain formulation which is adopted in the EMTlP and EMTDC programs. Improvements to speed up the calculation are made in order to realize electromagnetic tran- sient simulation in real-time by parallel processing using two digi- tal signal processors (DSP's) for eaicb line. The Field test is repro- duced by R'TDS and the simulation results are compared with the published field test results to show a good agreement between the two sets. Details of the system data for the field test are also given in this paper. I. INTRODUCTION The Real-Time Digital Simulator (RTDS) or digital TNA is the first completely digital real time ,electromagnetic transients ac and dc simulator and relay tester ever developed based on Digital Signal Processors (DSP's) in aparallel processing archi- tecture ( l). By contrast, other re.al-time transients simulators have been developed based on single or two processor comput- ers (2),(3),(4) but suffer the disadvantage of being restricted in size and extent of system which can be modelled. For example, lator is not always readily available. Validation testing is often done against the results from another simulator. Because of convenience, electromagnetic transients programs (emtp) can be readily used for comparison and validation of new simulators but actual system tests are preferable because of the direct rela- tionship to reality.