Prevention of Transient and Voltage Instabilities Using A Remedial Action Scheme Based On Generation Shedding and Load Cut

Transient instability, voltage instability or a combination of both have been the cause of several power system blackouts all over the world in the recent years. Occurrence of a super-component contingency (SCC) that refers to multiple and simultaneous outages of grid facilities like a power plant or a multi-circuits line may lead to blackout if no remedial action schemes (RAS) are implemented. This paper proposes a new event-based RAS to overcome the transient and voltage instabilities caused by super-component contingencies through optimal generation shedding and load cut. To do this, a new multi objective framework is presented simultaneously optimizing the competing objective functions of transient and voltage stability margins and generation shed and load cut amount. Multi objective decision making is performed using a combination of analytical hierarchy process (AHP), modified augmented  constraint method and technique for order preference by similarity to ideal solution (TOPSIS). The effectiveness of both the proposed model and MODM solution approach is extensively illustrated on a simulated model of Iran’s power system in 2014.