A Multi-Dimensional Indicator Synergistic Approach to the Evaluation of Equal-Offer Collusion in Electricity Market

After the new round of power reform, there are some cases of market players in the regional power markets that disrupt the normal operation of the market by tacit collusion to destroy the order of fair competition. To this end, in response to the phenomenon of equal-offer collusion existing in the power market, this paper proposes a multi-dimensional index synergistic evaluation index system to establish equal-offer collusion indexes from five dimensions: the unit itself, between units, unit-market, market-unit, and market itself according to the market situation, and to make a comprehensive assessment of the possibility of equal-offer collusion of units. In this paper, the index values are obtained by selecting appropriate methods according to the characteristics of each dimension, and the dynamic weighting method is used to add up the data of each index to obtain the likelihood of collusion of units and other offers under the evaluation system. Finally, this paper verifies the feasibility and applicability of the method using examples.