Contingency-based optimal placement of Optimal Unified Power Flow Controller (OUPFC) in electrical energy transmission systems

This paper presents a new approach to determine the optimal location of an optimal unifiedpower flow controller (oupfc) as an energy flow controller, under a single line contingency (n ?? 1contingency), to satisfy operational decisions. a contingency analysis is performed to detect and rank thefaulted contingencies on the basis of their severity in electrical energy transmission systems. minimizationof the average loadability on all energy transmission lines is considered as the optimization objectivefunction, while the network settings are set to minimize active power losses under pre-contingencyconditions. the optimization problem is modeled using a non-linear programming (nlp) framework andsolved using the conopt solver. the proposed algorithm is implemented in matlab and gams softwareon the ieee 14- and 30-bus test systems. the simulation results demonstrate the effectiveness of theproposed algorithm in enhancing energy system security under a single line contingency. furthermore, theoupfc is outperformed by a unified power flow controller (upfc) in normal and contingency operationsof electrical energy transmission systems, from technical and economical points of view.