Abstract
One of the strategic actions to gain more profit in the electricity market is to exercising market power as a leverage in exclusive situations. The main goal of this article is to assess load serving entities market power via self-action scramble by price-based indices as an application of the structural decomposition approach. In addition, the possibility of forming a beneficial coalition due to the cross interactions between players can be evaluated using the proposed indices. These coalitions may be occurred between two generation units, two load serving entities, or a generation unit and a load serving entity. The cumulative sharing impacts of one load serving entity on the locational marginal prices of all units owned by a GenCo is also defined as a new index. To achieve this goal, the first step is to extract the structural decomposition coefficients of market components consisting of suppliers, inelastic, and elastic loads, which determine the contribution of all players on the electricity price separately. In the second step, new structural indices to determine self/cross-share index of each player in the electricity price based on the contributing factors obtained from the decomposition process. So, it is possible for market operator to prioritize the potential of exercising market power and forming coalition with a price-based index for both-sides players. As well, it is important for market operators to explore the economic justification of relationships between players to prevent market deviation. The proposed approach is evaluated on the IEEE 24-bus system, and the results are discussed.
Published Version
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