Analysis of the Influence of Constructing New Type Power System on Planning Reserve Capacity

In this paper, the influencing factors of planning reserve capacity under the background of constructing the new type power system are analyzed in depth. Considering the influence of the confidence rate and different error coefficients of the renewable energy prediction, two correction methods of load reserve capacity were proposed. At the same time, the influence of UHV DC project production on the hot accident reserve was considered in this paper. The changes of the planned reserve capacity of the power system for large-scale renewable energy access and DC project commissioning are studied. Taking a regional power grid as an example, the recommended value of reserve capacity of regional power grid and provincial power grid at different levels in different years was calculated under the condition of high proportion of renewable energy access. The research conclusions make important significance on accurate analysis of power system balance and reasonable guidance of future power supply planning and layout.