the autonomous stress indicator for remotely monitoring power system state and watching for potential instability远程监控电力系统状态的自动压力指示器和看潜在的不稳定.pdf

Algorithms 2009, 2, 183-199; doi:10.3390/a2010183 OPEN ACCESS algorithms ISSN 1999-4893 /algorithms Article The Autonomous Stress Indicator for Remotely Monitoring Power System State and Watching for Potential Instability Donald McGillis *, Reginald Brearley, Khalil El Arroudi and Geza Joos Department of Electrical and Computer Engineering, Power Engineering Research Laboratory, McGill University, Canada * Author to whom correspondence should be addressed; E-mail: donmcgillis@videotron.ca Received: 9 October 2008; in revised form: 15 January 2009 / Accepted: 2 February 2009 / Published: 10 February 2009 Abstract: The proposed Autonomous Stress Indicator (ASI) is a device that monitors the contents of the protection relays on a suspect weak power system bus and generates a performance level related to the degree of system performance degradation or instability. This gives the system operators some time (minutes) to take corrective action. In a given operating area there would not likely be a need for an ASI on every bus. Note that the ASI does not trip any breakers; it is an INFORMATION ONLY device. An important feature is that the system operator can subsequently interrogate the ASI to determine the factor(s) that led to the performance level that has been initially annunciated, thereby leading to a course of action. This paper traces the development of the ASI which is an ongoing project. The ASI could be also describe