Analysis of cascading failure scenarios in Turkey interconnected energy system

Abstract

This paper deals with scenario of cascade failure in a large interconnected grid of Turkey. A single fault seldom leads to the catastrophe like blackout in energy system, but often causes other faults, which result in cascading failures and blackouts. Blackouts are occurred prevalently in huge energy system. Initiator events of these catastrophic failures can be prevented by convenient protection settings. In this study, different cascading failure scenarios are evaluated under credible contingency conditions. The scenarios have been analyzed on the Northwest Anatolia energy system with 118 buses where is the most critical part of Turkey Electricity System. The situation of energy plants and transmission lines in this energy system are analyzed for disability aspects. All energy system components are simulated by means of a power flow analysis performed with the PSS/E software. The power flow map is drawn from simulated data. The results allow us to be better prepared to face these severe disturbances, defining procedures for emergency situation and training the control room operators.