ASSESSMENT OF THE IMPACT OF THE COMMISSIONING OF POWER UNIT VVER-1200 WITH THE SYSTEM OF ACCUMULATION OF THERMAL ENERGY ON THE WHOLESALE MARKET OF ELECTRICITY AND CAPACITY

Abstract

In the present work, the author makes an estimate of the influence of NPP power unit with the system of accumulation of thermal energy (SATE) in the wholesale market of electricity and capacity (WMEC) by the example of the NVNPP. Using a mathematical model developed by the author and based on the official methodology of price forecasting [1], the changes of the sale price of electricity in the market «for days forward» (RSV) were estimated for the region of NPP construction and for the first price zone (European part of the Russian Federation). It is shown that in the current conditions the commissioning of the new nuclear power unit at a constant consumption leads to a slight reduction (a few percent from the average price on the RSV) in the price of electricity, offset in part (order 1/10) by an increase in the price of electricity due to the expansion of the range of the SATE maneuvering. The analysis suggests that commissioning of NPP power unit with SATE in modern conditions is meaningful only when a significant change in rules of the wholesale power market. The results are expected to clarify the pricing boundary condition for finding the optimal parameters of complex NPP+SATE, which were previously regarded as constant by the author [2]. The developed model can be applied to solve a wide range of optimization problems of parameters and operation modes of the NPP power units with accumulation systems and without them.