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Determination of ATC Using DCPTDFs Based Approach in Deregulated Market

Sameena Khan, Sanjeev Kumar, Kusum

Deregulated electricity industry aims to create a competition in market to trade electricity, which gives new opportunities to deal with technical challenges of market participants and power system researchers. The benefits are efficient capacity expansion planning, cheaper electricity, cost minimization, and better services. For better transmission services support in electricity industry and full utilization of transmission assets, Available Transfer Capability (ATC)must be calculated. Available transfer capability (ATC) of transmissionnetwork is the extra amount of power transfer that can betransmitted between the buyer bus and seller bus without any loss ofsecurity. For proper operations of system under the varioustransactions, ATC calculations must be fast andaccurate enough. In this paper by using DCPTDF scheme the ATC is calculatedwith and without line contingency caseand then the corresponding values of ATC are compared. The multiple line contingencies and their effecton the value of ATC are shown. The above said methodology is implemented on IEEE 24-bus test system.