Title: Generating short-term probabilistic wind power scenarios via nonparametric forecast error density estimators: Generating short-term probabilistic wind power scenarios via nonparametric forecast error density estimators

Abstract

Forecasts of available wind power are critical in key electric power systems operations planning problems, including economic dispatch and unit commitment. Such forecasts are necessarily uncertain, limiting the reliability and cost effectiveness of operations planning models based on a single deterministic or “point” forecast. A common approach to address this limitation involves the use of a number of probabilistic scenarios, each specifying a possible trajectory of wind power production, with associated probability. We present and analyze a novel method for generating probabilistic wind power scenarios, leveraging available historical information in the form of forecasted and corresponding observed wind power time series. We estimate non-parametric forecast error densities, specifically using epi-spline basis functions, allowing us to capture the skewed and non-parametric nature of error densities observed in real-world data. We then describe a method to generate probabilistic scenarios from these basis functions that allows users to control for the degree to which extreme errors are captured.We compare the performance of our approach to the current state-of-the-art considering publicly available data associated with the Bonneville Power Administration, analyzing aggregate production of a number of wind farms over a large geographic region. Finally, we discuss the advantages of our approach in the contextmore » of specific power systems operations planning problems: stochastic unit commitment and economic dispatch. Here, our methodology is embodied in the joint Sandia – University of California Davis Prescient software package for assessing and analyzing stochastic operations strategies.« less

Authors:

Staid, Andrea  ^[1];

• Search DOE PAGES for author "Staid, Andrea"
• Search DOE PAGES for ORCID "0000-0001-6125-5814"

Watson, Jean -Paul ^[1]; Wets, Roger J. -B. ^[2]; Woodruff, David L. ^[2]

---

+ Show Author Affiliations

1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
2. Univ. of California, Davis, CA (United States)

Publication Date:

Tue Jul 11 00:00:00 EDT 2017

Research Org.:

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:

USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:

1369306

Report Number(s):

SAND-2017-6908J
Journal ID: ISSN 1095-4244; 654918

Grant/Contract Number:  

AC04-94AL85000

Resource Type:

Accepted Manuscript

Journal Name:

Wind Energy

Additional Journal Information:

Journal Volume: 20; Journal Issue: 12; Journal ID: ISSN 1095-4244

Publisher:

Wiley

Country of Publication:

United States

Language:

English

Subject:

17 WIND ENERGY; wind power; forecasting; uncertainty; probabilistic scenarios; stochastic unit commitment and economic dispatch