A Study on the Characteristics of Renewable Energy Extreme Output and Typical Power and Energy Balancing Scenarios for New Type Power Systems
As the proportion of renewable energy generation increases,the power balance in electricity systems exhibits characteristics of strong uncertainty and short-term power surplus/shortage,which has serious impacts on the reliability of power supply.This paper,based on the actual operating characteristics of renewable energy output and future trends in power source development,investigates typical power source structure scenarios in the new type power system containing hydro power.On this basis,a quantitative analysis model for power and energy balance is established.The typical electricity balance scenarios and the demand for flexible system regulation ability in future new energy development scenarios are quantified through numerical examples,and the impact of extreme low/high output of new energy on electricity balancing is analyzed.This research can provide decision-making references for the construction of new type power systems in China.
renewable energylow outputhigh outputpower and energybalancingflexibility
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