In this research, a real-time nowcasting system for regional landslide-hazard assessment under extreme-rainfall conditions was established by integrating rainfall data retrieving system, landslide-susceptibility analysis program (TRISHAL), and display to show the stability of slopes in real time provide an alert index rainstorm disaster prevention mitigation. The hydrogeological parameters were...

Vijay Vittal Arizona State University 15.1 Definitions and Historical Perspective ........................ 15-1 15.2 Criteria for Security ...................................................... 15-2 15.3 Assessment and Control ............................................... 15-3 15.4 Dynamic Phenomena of Interest ................................. 15-3 15.5 Timescales ..............................

This paper studies the contraction properties of nonlinear differential-algebraic equation (DAE) systems. Specifically we develop scalable techniques for constructing the attraction regions associated with a particular stable equilibrium, by establishing the relation between the contraction rates of the original systems and the corresponding virtual extended systems. We show that for a contract...

Main contribution of this work is improving transient stability by installing Flexible AC Transmission System (FACTS) in power systems. For do this, Unified Power Flow Controller (UPFC) has been selected. Also a novel structure has been suggested to improve classic Harmony Search algorithm and suggested improved Harmony Search (iHS) algorithm. This algorithm has been used to obtain UPFC paramet...

An implementation of the Multi-Area Thévenin Equivalents (MATE) partitioning framework for the parallel solution of large power system matrices is described in this paper. The solution of the Western Electricity Coordinating Council system (∼15,000 buses) obtained using both traditional sparsity techniques and MATE were compared. The MATE algorithm achieved speedups of up to 7 times with respec...

An approach for preliminary aero-engine design, incorporating a mean-line code the design of axial-flow, multi-stage compressors, is presented. The compressor developed and integrated within framework assessment concepts. It then combined with modules map generation, multi-point engine steady-state transient off-design performance aircraft mission analysis. Implementation examples are presented...

In almost all the literatures, the qualitative assessment of transient angle stability extracts the angle information of generators based on the swing curve. As the angle (or angle difference) of concern and the threshold value rely strongly on the engineering experience, the validity and robust of these criterions are weak. Based on the stability mechanism from the extended equal area criterio...

The question of transient stability control is revisited, various types of controls are identified, and a general approach to closed-loop emergency control is proposed. The focus is on feasibility aspects, general salient features and illustration of stabilization capabilities of an emergency control scheme relying on generation shedding.