Abstract

In an electricity market, power transmission networks allow power flow that is required to meet different bilateral and pool contracts between customers and suppliers. To ensure power system security, transactions are permitted to the point that the system design and operating conditions are not violated. This article presents a new method for determining the available transfer capability of the transmission system with respect to a particular transaction or flow gate using synchrophasor measurements. The method also utilizes a DC power flow based sensitivity concept. The proposed method is simple, fast, and well suited for real-time applications. The effectiveness of the proposed method is tested on the New England 39-bus test system, IEEE 24-bus reliability test system, and 246-bus Northern Region Power Grid Indian systems.

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