Global Stability Control of Power Systems

Authors:	Leung Joseph S. K., City University of Hong Kong, Hong Kong Hill David J., City University of Hong Kong, Hong Kong
Topic:	6.3 Power Plants and Power Systems
Session:	Power System Stability
Keywords:	Adaptive control, Small signal stability, Transient stability, Voltage stability.

Abstract

This paper introduces an adaptive coordination scheme to optimally enhance the transient stability, voltage security and frequency damping of a power system network by scheduling the parameters of the available controllers. A set of real-time stability indicators are used to reflect the power system stabilities. The relative significances of a group of controllers to the power system are used as a reference to schedule new controller parameters. This scheme effectively allocates power system resources to handle different stability issues in different time frames. The results suggest that power system security can be further enhanced by means of coordinated control.