3.8 Proceedings Paper

PV Ramp Rate Smoothing Using Energy Storage to Mitigate Increased Voltage Regulator Tapping

Journal

Publisher

IEEE

Keywords

energy storage; advanced inverters; distribution system; photovoltaics

Funding

  1. U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]

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A control algorithm is designed to smooth the variability of PV power output using distributed batteries. The tradeoff between smoothing and battery size is shown. It is also demonstrated that large numbers of highly distributed current, voltage, and irradiance sensors can be utilized to control the distributed storage in a more optimal manner. It is also demonstrated that centralized energy storage control for PV ramp rate smoothing requires very fast communication, typically less than a 15-second update rate. Finally, advanced inverter dynamic reactive current is shown to provide voltage variability smoothing, hence reducing the number of voltage regulator tap changes without energy storage.

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