UPGRADATION OF PROTECTION OF POWER SYSTEM FROMFREQUENCY VARIATION USING MICROCONTROLLER BASED NUMERIC RELAY
Keywords:
-Abstract
The aim of this project is to analyze and upgrade existing transmission line protection system.
This paper investigates the protection of power system from under/over frequency [1] using numeric
relay. [2]The introduction of digital technology in the protection field has made tremendous changes in
the art and power system protection. The new relays are multifunctional and operate digitally
(numerically). [4] Apart from the basic protection function, these relays have extensive self-monitoring
capabilities and can communicate with operator terminals and control system. This project is aimed to
provide an overview of the latest technologies used in numeric based power system protection, their
underlying theory, algorithms and areas of application