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 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 paper considers three scenarios for the operation of household PV system, as shown in Table 1, including household PV without energy storage, household PV with distributed energy storage, and household PV with centralized energy storage. The energy transmission methods in these three scenarios are shown in Fig. 1.
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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Abstract Solar photovoltaic systems are crucial to solving the problem of rural energy in remote and cold areas. In the present study, an innovative off-grid photovoltaic energy supply system
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Finally, suggestions are proposed to further promote the development of household PV energy storage system. The research results can provide reference for improving the local
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