Reliable & safe Grid connectivity of SC test Laboratory, innovatively using substation bus-bar design

The gigantic expansion of power generation and transmission infrastructure in India, necessitated the establishment of high-capacity testing facilities too, that interface directly with the grid. In-line with above, the National High Power Test Laboratory (NHPTL) at Bina was developed to conduct high-current short-circuit (SC) tests on power equipment, requiring substantial quantum and reliable grid power as the source for testing. The location of the online short-circuit laboratory was finalized based on detailed power system studies, considering proximity to strong grid nodes and adequate fault level. The SC test conduction involves drawl of the short-circuit current for short duration from the grid and requires mainly reactive power from the grid which may associate some quantum of…