Modeling of generation and supply competitiveness in regional cross-border electricity trading

In the paper, it is shown how is electricity trading (including congestion) influence on market participants in each area. Market participants we focus here are generators (traders) and suppliers (customers). It is shown three examples (models) with four connected areas (regional market), where this benefits and losses for the involved parties are presented - impact on competitiveness. Four area example is shown on 11 node model in MATLAB where we use AC optimal power flow. The same 11 node model is shown also in EMCAS where we use DC optimal power flow and emphasize is on strategic bidding (marginal cost bidding, physical withholding, economic withholding). The last model is four area example in MASI based on DC optimal power flow where we show competitiveness of generators and suppliers in short term trading. Comparision of this three models are made where positive and negative sides are explained.