Problems of accounting for the reliability factor when selecting the composition of generating equipment of the CHPP in the wholesale electricity market and ways to solve them

An analysis of the currently used methodology for selecting the composition of the included generating equipment is carried out in relation to a CHPP with a complex composition of equipment based on traditional heating units and combined-cycle plants (CCGT). It is revealed that the specified problem is solved on the basis of an economic criterion without taking into account the reliability factor. The features of CCGT operating modes and the problems of taking them into account when choosing options for the composition of CHPP equipment are given by the example of CCGT-450. A technique for taking into account the reliability factor when choosing and reducing the number of acceptable options according to the criterion of minimal generalized risk is proposed. It is shown that its application makes it possible to determine the priority procedure for considering acceptable options in order to select the optimal one, which will ensure reliable operation in the electricity market and maximize profits. With regard to CHPPs with PT-80 and CCGT-450 heating units, an algorithm for selecting possible CCGT operating modes during the passage of a load dip in the winter period of the plant operation is considered. The general approaches to solving the problem taking into account the proposed approach to allowing for the reliability factor are considered.