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Static security based available transfer capability (ATC) computation for real-time power markets

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Author(s): Venkaiah Chintham | Dulla Mallesham Vinod Kumar

Journal: Serbian Journal of Electrical Engineering
ISSN 1451-4869

Volume: 7;
Issue: 2;
Start page: 269;
Date: 2010;
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Keywords: available transfer capability | intelligent techniques | power system deregulation | real-time power markets | security analysis

ABSTRACT
In power system deregulation, the Independent System Operator (ISO) has the responsibility to control the power transactions and avoid overloading of the transmission lines beyond their thermal limits. To achieve this, the ISO has to update in real-time periodically Available Transfer Capability (ATC) index for enabling market participants to reserve the transmission service. In this paper Static Security based ATC has been computed for real-time applications using three artificial intelligent methods viz.: i) Back Propagation Algorithm (BPA); ii) Radial Basis Function (RBF) Neural network; and iii) Adaptive Neuro Fuzzy Inference System (ANFIS). These three different intelligent methods are tested on IEEE 24-bus Reliability Test System (RTS) and 75-bus practical System for the base case and critical line outage cases for different transactions. The results are compared with the conventional full AC Load Flow method for different transactions.
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