研究目的
To develop a method for determining the MW and MWh capacities a BESS would need in order to accommodate a particular PV penetration level on a distribution feeder; or, conversely, the amount of PV that could be installed on a feeder with a minimal investment in MW and MWh BESS capacities.
研究成果
A BESS with 0.61 MW of power capacity and 2.4 MWh of energy capacity would be able to achieve a flat desired feeder profile (DFP) with 35% PV penetration on the Oxford-Rural feeder. The method developed is applicable to any distribution feeder, so long as relevant load and insolation data are available.
研究不足
The method is applicable to distribution feeders, so long as the requisite load and insolation data are available. However, the results presented are unique to the Oxford-Rural feeder. Other feeders will present different load curves and insolation profiles, and as such the BESS capacity recommendations will differ.
1：Experimental Design and Method Selection:
Developed a method using a BESS s-domain plant model and a PI compensator, feeder load data, and local insolation data to determine the BESS MW and MWh capacities required to provide both firming (intra-hour compensation) and shaping (inter-hour) on a distribution feeder in response to both photovoltaic (PV) and load fluctuations.
2：Sample Selection and Data Sources:
Used measured load data from PGE’s Oxford-Rural Feeder and insolation data from a nearby solar insolation monitoring station. The Salem PV data were augmented using highly granular data from another insolation monitoring station.
3：List of Experimental Equipment and Materials:
Utilized a BESS s-domain plant model and a PI compensator.
4：Experimental Procedures and Operational Workflow:
The method involves applying the BESS reference signal to the plant model to determine the BESS output power.
5：Data Analysis Methods:
The MW capacity for a BESS was obtained by calculating the maximum of the absolute value of the BESS reference signal curve. The MWh capacity for a BESS was determined by integrating the BESS reference signal curve.
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