| Title |
Relinės apsaugos nuo įžemėjimo atrankumo tyrimas / |
| Translation of Title |
Selectivity investigation of relay protection from earth fault. |
| Authors |
Sakalauskas, Tomas |
| Full Text |
|
| Pages |
46 |
| Keywords [eng] |
Relay protection ; earth fault ; selectivity |
| Abstract [eng] |
The selectivity research of link protection of grounding has been done and the grounding modes of neutrality and their influence to grounding selectivity have been analyzed. Moreover, the distribution of protection under a controlling element has been studied. The research of the equipment of link protection used in the Stock Company “VST” Šiauliai region has been implemented and compared its functions. There have also been analyzed four types of effect due to wrong link protection of grounding. It was estimated that during the period of disturbance of grounding a higher line of harmonic appears in the current of null string. The experiment was implemented which estimated bias of transformers of null string by the influence of higher rates. Regularity related between rates and bias has been estimated. In addition the research explained the reasons which determines selectivity during the period of the grounding disturbance. |
| Type |
Master thesis |
| Language |
Lithuanian |
| Publication date |
2007 |
