A NOVEL SYSTEM FOR DETECTION AND CLASSIFICATION OF POWER SYSTEM TRANSMISSION LINE FAULTS

摘要

Conventional electromechanical or solid state relays suffered from inflexibility, duplication efforts, complexity and cost. The present invention relates to a novel system for detection and classification of transmission line faults characterized in that the said system (i) a 3-phase variac (1) is connected to the main supply; (ii) output of (i) is connected to a 3-phase isolation transformer (2) of output whereof is connected to 100 km line model (3) which in turn is connected to star connected load of 10W per phase, the said model (3) having a mechanical fault creation arrangement with jumper cable to create type as well as location of faults at every 10 km ; (iii) switching circuit (4) connected to (3) to create a desired fault inception angle; (iv) data acquision card is connected between (3) and high speed computer (6); (v) computer monitor (6) displays the type and location of fault with the help of (5), employing LABVIEW software.