The Under-frequency Load Shedding (UFLS) scheme has been used by utility companies around the world to mitigate frequency drop caused by simultaneous or cascading tripping of transmission lines and/or generators in a power system. In the effort to devise an optimal load shedding scheme, it is imperative that investigations are done on the many factors that may affect the response of the scheme ...

This paper proposes an Optimal Power Flow for defining the minimum load to be shed maintain steady-state frequency between allowable limits in islanded microgrids. The droop coefficients and setpoints (no-load voltage of each Distributed Generator) are optimized considering microgrid frequency, nodal voltages, power generation (apparent reactive powers). approach is applied a 33 nodes, 24 hours...

Nonlinear static procedure (NSP) is a common technique to predict seismic demands on various building structures by subjecting a monotonically increasing horizontal loading (pushover) to the structure. Therefore, the pushover analysis is an important part of each NSP. Accordingly, the current paper aims at investigating the efficiencyof various algorithms of lateral load patterns applied to the...