Scheduled System Maintenance:
On Wednesday, July 29th, IEEE Xplore will undergo scheduled maintenance from 7:00-9:00 AM ET (11:00-13:00 UTC). During this time there may be intermittent impact on performance. We apologize for any inconvenience.
By Topic

Power system security assessment using a hybrid expert system/neural network architecture

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Yan, H.H. ; Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA ; Chow, J.-C. ; Fischl, R. ; Chen, R.X.

Presents a system in which artificial intelligence techniques and conventional analysis methods are combined to provide an analysis tool suitable for online power system security assessment. This system uses a hierarchical architecture which coupled an expert system (ES) with a set of neural networks (NNs) for assessing power system contingencies. The rule-based ES is used to examine various approximate measures to perform a preliminary coarse screening and direct the potentially harmful contingencies for further analysis by the NNs in a two-level structure. The first-level NN, called the severity evaluator, performs a finer screening by classifying the contingencies according to the severity of limit violations. The second-level NN, called the postcontingency predictor, estimates the postcontingency voltage drops and line flows. The proposed system is particularly useful for power systems which must rely on offline load flow results for voltage limit violations. A 17-bus power system model example is used to demonstrate the applicability of the system

Published in:

Circuits and Systems, 1992. ISCAS '92. Proceedings., 1992 IEEE International Symposium on  (Volume:4 )

Date of Conference:

3-6 May 1992