Auxiliary Mechanism Of Electricity Market for Clean Power Generation Units

This paper analyzes the problem of the lack of peak shaving capability after the clean energy units participate the power market. The peak adjustment capacity of the unit is taken as the target of the auxiliary market trading, which providing incentive mechanism for the participant taking the initiative to participate in deep peak shaving. At the same time, in order to solve the local and period transmission congestion caused by the clean energy units, which are far from the load center, this paper embeds the sub-process of peak adjustment right cashing after checking the power flow by ISO, and adjusts the actual minimum output of the units to mitigate transmission congestion. Through the above means, we can make the best use of the clean energy and make reasonable compensation for the fossil energy units with wider range of peak adjustment ability, and finally achieve the overall optimal social benefit. The results of numerical simulation show that the auxiliary mechanism proposed in this paper is effective and feasible. The mechanism follows the basic principles of economics, and provides a solution for clean energy to join the competitive market. It helps to embody the market equity and fair.