Performance Analysis of a grid connected Hydropower plant for Load Rejection and Addition cases

The Hydropower resource is one of many natural sources gifted to India in abundance. It has a very important aspect over other resources of that having minimum operation start-up time than others, in magnitude of few seconds. This makes it a contender of peak load provider in energy sector. This paper gets influence from this and it connects the events of 5th April'20, when whole India had to switch off their electricity to maximum limit, for few minutes. This creates a situation of high load rejection and load addition conditions, which are discussed in this paper. This paper models and simulates a hydropower generating system connected to the main grid and discusses the effects that can be seen by simulating the events inspired from 5th April'20 in sequence. This paper checks the effects on system by simulating and characterizing the results shown on rotor speed, excitation field voltage in the generator and terminal phase voltage on the generating side.