A generalized shell for dynamic security analysis in operations planning

Abstract

The authors introduce the concept of a generalized shell for performing power-system dynamic security analysis. The generalized shell mechanizes routines traditionally carried out by human experts and that are essential to power-system dynamic security analysis, thereby greatly accelerating the realization of complex processes. The shell semantics express high-level goals and tasks using a friendly, highly compact syntax which closely matches the language of operations planners. Typically, the shell will execute appropriate load-flow and transient-stability simulations, perform result analysis, make input changes, and repeat this process until a user-defined goal has been achieved. A working shell prototype for performing key algorithmic processes is described and results of a typical sensitivity study are presented using a 700-bus model of the Hydro-Quebec network. It is expected that the prototype will reduce study-cycle time, improve the accuracy of dynamic security limits, and transform the working environment of operations and system planners. Eventually, the approach should gravitate toward supporting online dynamic security analysis. >