Title :
The influence of floating electrodes in the results of impulse tests
Author :
Spressola, Flávio Eduardo ; de Brito, Hudson Fernandes ; Martinez, Manuel Luis Barreira
Author_Institution :
Escola Fed. de Engenharia, Minais Gerais, Brazil
Abstract :
When testing high voltage set-ups for searching for the critical flashover voltage the value of the associated standard deviation, as stated in technical standards, is usually assumed as lower than 3%. Normally, high values of standard deviation indicate problems in the accomplishment of the test. This work deals with the influence of floating electrodes close to the region of the formation of the electrical field on the values of standard deviation of the critical flashover. The presented results are based in tests carried out in a 15 kV spacer system and in rod-rod gaps
Keywords :
high-voltage techniques; 15 kV; critical flashover; critical flashover voltage; electrical field formation; floating electrodes; impulse test results; rod-rod gaps; spacer system; standard deviation; technical standards;
Conference_Titel :
High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)
Conference_Location :
London
Print_ISBN :
0-85296-719-5
DOI :
10.1049/cp:19990722
