研究目的
To enhance photovoltaic (PV) utilization of stand-alone PV generation system by proposing a hybrid energy storage system (HESS) capacity configuration method considering different types of load.
研究成果
The proposed HESS capacity configuration method effectively enhances PV utilization, considering different types of load and the whole life cycle cost. The method's feasibility and effectiveness are confirmed through analysis of 3 actual examples.
研究不足
The study does not consider the impact of the HESS efficiency and capacity attenuation in some scenarios.
1：Experimental Design and Method Selection:
The method involves obtaining the HESS power difference between the load demand power and the PV output power, allocated by the low-pass filtering algorithm.
2：Sample Selection and Data Sources:
PV power generation data of typical summer day in Xinjiang, Hebei and Shenzhen with a sample time of 1min.
3：List of Experimental Equipment and Materials:
HESS consists of vanadium redox flow battery (VRB) and lithium iron phosphate battery (Li).
4：Experimental Procedures and Operational Workflow:
The HESS power is compensated by the low-pass filtering algorithm, adjusting the allocated power to keep the combined HESS's charging and discharging energy equal.
5：Data Analysis Methods:
Calculating the values of UC and CRR, analyzing the results in different regions, the different load power time and the different filter time constants.
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