Title :
Optimal Placement of Superconducting Fault Current Limiters (SFCLs) for Protection of an Electric Power System with Distributed Generations (DGs)
Author :
Hyung-Chul Jo ; Sung-Kwan Joo ; Kisung Lee
Author_Institution :
Sch. of Electr. Eng., Korea Univ., Seoul, South Korea
Abstract :
Power flow patterns and fault current levels are influenced by the introduction of distributed generations (DGs) in an electric power system. In particular, the change in the fault current levels caused by DG installation may require a change in the coordination of relays to prevent their misoperation. When DGs are installed in an electric power system, superconducting fault current limiters (SFCLs) can be used to help reduce the fault currents within the breaking capacity of the protective devices. In this paper, multiple criteria such as the number of SFCLs, fault current reduction, and the total operating time of the relays are considered in order to determine the optimal placement of SFCLs for protection of an electric power system with DGs, and a scenario optimization based approach is used to solve the multi-criteria SFCL placement problem. Numerical simulations are also carried out to demonstrate the effectiveness of the proposed approach.
Keywords :
distributed power generation; electrical installation; numerical analysis; optimisation; power system protection; superconducting fault current limiters; DG installation; distributed generations; electric power system protection; fault current reduction; multicriteria SFCL placement problem; numerical simulations; optimal placement; optimization based approach; power flow patterns; protective devices; superconducting fault current limiters; Entropy; Fault current limiters; Fault currents; Linear programming; Optimization; Power systems; Relays; Distributed generation (DG); relay coordination; superconducting electric power; superconducting fault current limiter; system studies for superconducting devices;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2012.2232958