Abstract: In the context of new-type power systems, their proportion of new energy is increasing gradually. Analysis of the balance of an electric power and energy system faces new challenges because of randomness and fluctuation in new energy generation and its reverse peak regulation. This paper combines the strategic needs of energy transition to develop a new power balance mode for such a power system and demonstrates the key workflow of its power balance. Then, we conduct detailed modeling of its thermal power, hydro-power, pumped storage/storage power supply, and construct a sequential power balance model. Finally, a case study of a real power grid is used to verify this new method. We show that it reflects the characteristics of power sources accurately, gives the conditions of new energy consumption, and supports the study of power system lifting measures, thus significantly raising the level of scientific planning of the power systems.

Key words: power system planning, balance of power and energy, sequential production simulation, hydro power, pumped storage