Electrochemical Energy Storage Configuration Method under the Background of Large-Scale New Energy Access to Power Grid
The development of large-scale new energy will bring great pressure to the peak regulation of power grid.The construction period of electrochemical energy storage is short and the effect is fast,which is one of the important means to solve the problem of system peak regulation.The author proposes a method to calculate the required scale of electrochemical energy storage according to the peak regulation balance,that is,to calculate the starting capacity of thermal power in the scenario of small wind and solar power generation and no energy storage on a large load day.Based on the starting capacity of thermal power,the electrochemical energy storage needed to be configured in the scenario of large wind and solar power generation is calculated,and the rationality of energy storage configuration is checked by calculating the annual utilization rate of new energy.Taking the power grid of a province in southwest China as an example,the planned configuration capacity of electrochemical energy storage in the province in 2025 is calculated,and the role of energy storage in daily peak regulation balance is analyzed.The results show that under the condition of configuring a certain scale of energy storage,the abandonment rate of wind and solar power in the province can be controlled at 5%.The research results can provide reference for the demonstration of the scale of electrochemical energy storage construction in each province.
large-scale new energyelectrochemical energy storageconfigurationpeak regulationpeak regulating balance
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