@inproceedings{0984c5432aa744f88141d921275bf223,
title = "NAtural variability of irradiance and power-simple variability metrics for photovoltaic power plants",
abstract = "Electric power utilities have the continual task of balancing the load with available generation. The load constantly changes in both predictable patterns (e.g. from seasonal and daily load variations), and in less predictable ways (e.g. the minute-to-minute variations or longer). The reserve and regulation activities required to balance these less predictable variations are called {"}ancillary services{"} which add to the overall cost of integration. One characteristic of solar photovoltaic (PV) power is that it varies over all the time scales of utility operations, and thus is expected to increase the ancillary services requirements. Presented here are two metrics that aid in assessing the impact of solar variability onto the grid: the Natural Variability of Irradiance (NVI) and the Natural Variability of Power (NVP). These metrics are statistical measures of changes in irradiance and power. The metrics will be defined and demonstrated using data from a 2.66-MW PV power plant.",
author = "Willy, {David M.} and Acker, {Tom L} and Flood, {Ronald K.}",
note = "Publisher Copyright: Copyright {\textcopyright} 2014 by American Solar Energy Society.; 43rd ASES National Solar Conference 2014, SOLAR 2014, Including the 39th National Passive Solar Conference and the 2nd Meeting of Young and Emerging Professionals in Renewable Energy ; Conference date: 06-07-2014 Through 10-07-2014",
year = "2014",
language = "English (US)",
series = "43rd ASES National Solar Conference 2014, SOLAR 2014, Including the 39th National Passive Solar Conference and the 2nd Meeting of Young and Emerging Professionals in Renewable Energy",
publisher = "American Solar Energy Society",
pages = "552--558",
booktitle = "43rd ASES National Solar Conference 2014, SOLAR 2014, Including the 39th National Passive Solar Conference and the 2nd Meeting of Young and Emerging Professionals in Renewable Energy",
}