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The zonal approach is now broadly adopted by electricity markets worldwide, since it provides the participants with an easily understandable representation of the transmission constraints. The zonal approach and the total transmission capability (TTC) interact in the sense that the higher is the TTC, the lower is the influence of transmission constraints on market results. As a consequence the TTC...
Summary form only given. The electricity markets are changing the power system operation. The increasing power exchanges make it necessary to operate the transmission grids closer and closer to security limits. A problem posed to power system engineers is therefore to find a suitable methodology to combine the results of both steady state and dynamic tools: this can reduce the overall computational...
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