Title :
Comparison of methods suggested for conveniently reproducing lightning overvoltages
Author_Institution :
Dipartimento di Energia Elettrica, Univ. Degli Studi di Roma ´´La Sapienza´´, Italy
Abstract :
The author presents the results of experimental work carried out to make a comparative evaluation of three different methods of generating very short-tailed lightning impulses (STLI) representative of certain kinds of overvoltages affecting overhead lines. These methods, called B, H and I, are all variants of the Marx circuit. B is one of the standard configurations of the Marx circuit, namely that which provides for an external resistance only. H is a modification of the impulse test plant, which consists in switching in the tail branch through a spark-gap. I is yet another modification of the impulse generator, which can be obtained by series-connecting an inductance of properly chosen value to the tail resistance. All three solutions are shown to solve elegantly the problem of generating STLI with good voltage efficiency and acceptable waveshapes
Keywords :
high-voltage techniques; insulation testing; lightning; overvoltage; power overhead lines; power system protection; pulse generators; spark gaps; test equipment; HV power lines; Marx circuit; impulse test plant; lightning overvoltages; overhead lines; series-connecting; short-tailed lightning impulses; spark-gap; Cable insulation; Glass; Insulator testing; Lightning; Poles and towers; Power overhead lines; Shape; Surge protection; Tail; Wire;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
Conference_Location :
Beijing
DOI :
10.1109/ICPADM.1988.38509
