International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 03 | March-2017
www.irjet.net
p-ISSN: 2395-0072
AUTO RESET ON TEMPORARY FAULT OTHERWISE PERMANENT TRIP IN THREE PHASE TRANSMISSION LINE Saqib Momin*1, Rahul Killedar*2, Omkar Shinde*3, Abhijeet Desai*4, Sanjeevan Ranage*5, Prof. Deepa Kerutagi*6 6Professor,
12345Students,
Electrical, Sanjay Ghodawat Institute,Atigre,India Dept. of Electrical Engineering, Sanjay Ghodawat Institute,Maharashtra, India
---------------------------------------------------------------------***--------------------------------------------------------------------
Abstract- Transmission line protection is an
1. INTRODUCTION
breakers to voltages. Lightning is the most widely recognized reason for transient issues, incompletely coming about because of separator flashover from the high transient voltages incited by the lightning. Other conceivable causes are swinging wires and impermanent contact with outside articles. Consequently, transient deficiencies can be cleared by quickly de-invigorating the line, keeping in mind the end goal to permit the blame to clear. Auto reclosing can then reestablish administration to the line. The rest of the 10 - 30% of shortcomings is semi perpetual or lasting in nature. A little branch falling onto the line can bring about a semilasting deficiency. For this situation, be that as it may, a quick de-empowering of the line and consequent auto reclosing does not clear the blame. Rather, an organized time-deferred excursion would permit the branch to be consumed with extreme heat without harm to the framework. Semi perpetual deficiencies of this sort are probably going to be most common in very lush territories and can be generously controlled by forceful line freedom programs. Lasting shortcomings are those that won't clear after stumbling and reclosing. A case of a perpetual blame on an overhead line is a broken wire bringing about a stage to open, or a broken shaft creating the stages to short together. Blames on underground links ought to be viewed as lasting. Link deficiencies ought to be cleared without auto reclosing and the harmed link repaired before administration is reestablished. There might be special cases to this, as on account of circuits made out of both underground links and overhead lines.
In different reviews it has been seen that blame happens are 70% to 90% is transient blame on overhead lines. A transient blame, for example, a separator flashover or short out is a blame which is cleared by the confine the blame, and which does not repeat when the line is reinvigorated. Shortcomings have a tendency to be less homeless people (close to the 80% territory) at lower, dissemination voltages and more transient (close to the 90% territory) at higher, sub transmission and transmission prompt stumbling of at least one circuit
Despite the fact that auto reclosing achievement rates fluctuate starting with one organization then onto the next, plainly the lion's share of issues can be effectively cleared by the correct utilization of stumbling and auto reclosing. This de-empowers the line sufficiently long for the blame source to pass and the blame circular segment to de-stimulate, then naturally recloses the line to reestablish benefit. Along these lines, auto reclosing can fundamentally decrease the blackout time because of flaws and give a more elevated amount of administration
important issue in power system in electrical engineering. Transmission and distribution lines have good contribution in the generating unit and consumers to obtain the continuity of electric supply. It runs over hundreds of kilometers to supply electrical power to the consumers. As 85-87% of power system faults are occurring in transmission lines, it is a required to detect and locate the faults in the power system as early as possible. This paper describes an automatic tripping mechanism for the three phase supply system. In the event of temporary fault, the project output resets automatically after a brief interruption, while it remain in tripped condition in case of permanent fault. The faults that are LG, LL and 3L might be lead to damage to the power system equipment and may be affect the power system. This project is designed to understand about the basic operation of the relay and what are all the advanced techniques which are been used by the people to make the safety operation of the electrical appliance and protection. Keywords: transmission mechanism, LG, LL and 3L.
Š 2017, IRJET
|
line,
tripping
Impact Factor value: 5.181
|
ISO 9001:2008 Certified Journal
|
Page 1673