The grid-side energy storage studied in this paper refers to the energy storage facilities deployed in the transmission and distribution segments of the power system. The position of grid-side energy storage in the power system is shown in Fig. 1.
Based on the capacity tariff calculation model of the Stackelberg game proposed in this paper, the capacity tariff of grid-side energy storage is 415.58 CNY/kW.
Therefore, it is necessary to use the capacity tariff mechanism to ensure that the basic income of the energy storage power station is conducive to the operation and survival of the development of energy storage in China at this stage. The Chinese government has proposed implementing a capacity tariff for grid-side energy storage.
The planned value of the capacity of the energy storage plant was 427.60 kW h, and the maximum value of the charging and discharging power of the energy storage plant was 85.52 kW. Fig. 6. Output of each unit in the system after the integration of grid-side energy storage. Fig. 7.
The results show that: When the rural household PV system is not equipped with energy storage, the PV local consumption rate is 34.58%, and 65.42% of PV power still has to be connected to the grid for consumption, posing a threat to the safe and stable operation of the distribution network.
The results show that the optimized photovoltaic and energy storage system can effectively improve the photovoltaic utilization rate and economic of the microgrid system. The model can provide an effective method for the design of photovoltaic and energy storage configuration schemes for microgrids in rural areas. 1. Introduction
The government can formulate appropriate energy storage subsidies or incentive policies to reduce the investment and operating costs of household PV storage system, so as to effectively improve the economic benefits of rural household PV storage system.
The results show that configuring energy storage for household PV can significantly improve the power self-balancing capability. When meeting the same PV local consumption, household PV centralized energy storage can achieve smaller energy storage configuration and lower cost compared to household PV distributed energy storage.
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