Detection of dynamic voltage collapse

This paper investigates how to detect a dynamic voltage collapse situation. The generator and governor dynamics are considered in the simulation process. An index proposed earlier has been investigated for its applicability to indicate the collapse situation. Time domain simulations, using a commercial software EUROSTAG, has been carried out in this work. The test result reflects the applicability of the index during the line loss, slow increasing loading and step loading situations. The paper also brings out the details of the simulation setup used, which would help others in carrying out further simulations and investigation.