Enhancing the Performance of Reverse Power Relay for Generator Protection

Abstract

The generator is the most important component in energy generation, and it needs to be protected from both internal and external disturbance. Reverse power relays (RPR), with the directional relay being the most commonly utilized as the principal safeguard, are used to trip the turbine generators to minimize the damage of prime mover. Modeling tools are helpful for learning the basics of a power system, especially for newbie engineers. These tools assist novice engineers in modulating the system in both normal and abnormal situations. This paper demonstrates how to model and simulate a digital RPR on MATLAB. Different conversions of data processes involved in signal digitization are also explored. Electromechanical relays were previously popular, but fast and very accurate digital relays have now surpassed them. Fast relay functioning is recommended, especially in the case of system faults that might cause a blackout. Digital relays provide a number of advantages, including several changeable settings and a small size. The performance of test relay in this article is tested by connecting a synchronous generator of 11kV to 220kV via a step-up transformer.