COURSE OVERVIEW

This practical and highly-interactive course includes various practical sessions and exercises. Theory learnt will be applied using our state-of-the-art simulators.
This course is designed to provide participants with a detailed and up-to-date overview of switchgear transient recovery voltage (TRV) techniques and result analysis. It covers the general considerations and importance of TRV, the recent TRV studies in international bodies, main reference, standards and guides; the capacitive current switching TRV and recovery voltage comprising of “1-cos” waveshape, voltage jump and current breaking conditions; the various types of faults covering reminder, overdamped TRV, reflected waves, underdamped TRV and triangular wave-shape; the TRV modification for current asymmetry, circuit breaker influence on TRV; and the terminal fault TRV, short line fault TRV and initial transient recovery voltage (ITRV).
During this interactive course participants will learn the out-of-phase TRV, three-phase (long) line fault and shunt reactor switching TRV; the transformer limited fault TRV and options for specification; the transformer limited fault TRV for EHV and UHV circuit breakers; the TLF TRV peak calculation and TLF RRRV calculation; the series reactor limited fault TRV and the influence of series capacitor on TRV; and the harmonization of TRVs in IEC and IEEE standards for high-voltage circuit breakers.