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Assessing the market power due to the network constraints in competitive electricity markets

机译：在竞争激烈的电力市场中，由于网络限制而评估市场力量

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The physical and operational constraints of the network pose very specific problems to market power analysis in the oligopolistic electricity markets. This paper presents a direct analytical approach to find the market equilibrium based on a supply function game model. The model is exploited to undertake a sensitivity analysis of the producer surplus with reference to the line flow limits under a DC power flow model for network representation. Two different kinds of indices, that can capture the market power arising under network constraints, are proposed. The first set of indices is the location privilege (LP), that measure the effect of the generators positioning in the grid on their surplus under perfect competition. The second set is for the network market power (NMP) indices that take into account the strategic behaviors of the producers that may take advantage of the congestion of the transmission lines. The indices allow for a ranking of the lines in terms of the market power they can induce and, in this respect, they may help the market regulator to focus on the network weakness in terms of the possible market outcomes under the market power behaviors from the supply side. The application of the proposed indices is illustrated with reference to the IEEE 30-bus test system.
机译：网络的物理和操作限制给寡头电力市场中的市场力量分析带来了非常具体的问题。本文提出了一种基于供给函数博弈模型的直接分析方法来寻找市场均衡。利用该模型，针对网络表示的直流潮流模型下的线路流量极限，对生产者剩余进行敏感性分析。提出了两种可以捕获网络约束下的市场支配力的指数。第一组索引是位置特权（LP），它测量在完美竞争下位于电网中的发电机对其盈余的影响。第二组是针对网络市场力量（NMP）指数的，该指数考虑了可能利用传输线拥塞的生产商的战略行为。这些指数可以根据它们可以诱发的市场力量来对各行进行排名，并且在这方面，它们可以帮助市场监管者根据市场力量行为在市场力量行为下可能产生的市场结果，将注意力集中在网络弱点上。供应方。参照IEEE 30总线测试系统说明了建议的索引的应用。

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