The maximum load of the power system is 9896.42 MW. The conventional units of the system mainly consist of 18 units of three types, with a total installed capacity of 7120 MW.
Taking the 49.5% RE penetration system as an example, the power and capacity of the ES peaking demand at a 90% confidence level are 1358 MW and 4122 MWh, respectively, while the power and capacity of the ES frequency regulation demand are 478 MW and 47 MWh, respectively.
Here, we focused on this subject while conducting our research. The multi-timescale regulation capability of the power system (peak and frequency regulation, etc.) is supported by flexible resources, whose capacity requirements depend on renewable energy sources and load power uncertainty characteristics.
Fitting curves of the demands of energy storage for different penetration of power systems. Table 8. Energy storage demand power and capacity at 90% confidence level.
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