With renewable power sources and new topology structures being widely introduced into the system, current local information-based generation-side protection cannot fully guarantee performance safety coordination with grid. This paper proposes an improved hierarchical system on generation-side. The proposed takes advantage of fusion multi-information provided by station layers. layer provides in...

This paper proposes a new system-level application for monitoring out-of-step (OOS) events in power systems. As already known, amplitude-dependent frequency shift is nonlinear phenomenon of electromechanical oscillations under large disturbances. The indicates the system’s nearness to instability. tool utilizes Normal Form method identify named phenomenon, leading accelerated OOS detection. pro...

in this paper, an efficient and comprehensive hybrid intelligent technique for the optimal placement of phasor measurement units (pmus) is proposed to minimize the number of pmu installation subjected to full network observability. three main purposes of pmus output synchronous measurements are monitoring, control, and protection of power system. we have combined binary imperialistic competitio...

This paper mainly deals the impact of relays on feeder protection also different factors used to control the active power, reactive power, power reversals, fault current magnitude and balancing condition of power system to protect the distribution system. when Distributed Generation sources are integrated in to the grid above all problems are occurs along with the feeder voltage regulation and ...

A proper protection system guarantees reliable and safe operation for a geothermal power plant. It is one of the most important factors during system engineering design and must be carefully selected to avoid equipment damage due to failures. The process design should include the selection of a protection scheme as well as adequate main and auxiliary equipment and installation considerations. A...

Protection practices in electric utility industry as it existed prior to re-structuring were designed to meet certain goals of sound engineering principles as they were applied, primarily to component protection in vertically integrated electric utility systems. There has been a significant shift in emphasis from uncomplicated component protection to system protection to avoid or mitigate wide-...

Power transformers are protected by different relays that operate independently. Malfunction of each relay has a major role in reducing the reliability of the protection system. In order to mitigate the main drawbacks of the power transformer relays, an overall protection scheme is presented in this paper. This scheme proposes a novel multi criterion algorithm using decision-making based on fuz...