Techniques for Improving the Control of Bulk Power Transfers on Interconnected Systems

Abstract
Criteria for achieving area net interchange and system frequency schedules with net interchange tie-line bias control in all areas of an interconnected system are briefly reviewed. Equations defining deviations from schedules, as well as consequent inadvertent interchange and time error accumulations when these criteria are not fulfilled, are derived. These lead to suggested control techniques based on adding, on a system wide basis, coordinated inadvertent interchange and time error correction factors to area control error computations. It is believed that such techniques would improve the control of bulk power transfers.

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