Wind power variability and power system reserves in South Africa

Poul Ejnar Sørensen*, Marisciel Litong-Palima, Andrea N. Hahmann, Schalk Heunis, Marathon Ntusi, Jens Carsten Hansen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Variable renewable generation, primarily from wind and solar, introduces new uncertainties in the operation of power systems. This paper describes and applies a method to quantify how wind power development will affect the use of short-term automatic reserves in the future South African power system.
The study uses a scenario for wind power development in South Africa, based on information from the South African transmission system operator (Eskom) and the Department of Energy. The scenario foresees 5% wind power penetration by 2025. Time series for wind power production and forecasts are simulated, and the duration curves for wind power ramp rates and wind power forecast errors are applied to assess the use of reserves due to wind power variability. The main finding is that the 5% wind power penetration in 2025 will increase the use of
short-term automatic reserves by approximately 2%.
Original languageEnglish
JournalJournal of Energy in Southern Africa
Volume29
Issue number1
Number of pages13
ISSN1021-447X
DOIs
Publication statusPublished - 2017

Cite this

@article{a2680c6bdd744ad28fbf8bb703cea29d,
title = "Wind power variability and power system reserves in South Africa",
abstract = "Variable renewable generation, primarily from wind and solar, introduces new uncertainties in the operation of power systems. This paper describes and applies a method to quantify how wind power development will affect the use of short-term automatic reserves in the future South African power system.The study uses a scenario for wind power development in South Africa, based on information from the South African transmission system operator (Eskom) and the Department of Energy. The scenario foresees 5{\%} wind power penetration by 2025. Time series for wind power production and forecasts are simulated, and the duration curves for wind power ramp rates and wind power forecast errors are applied to assess the use of reserves due to wind power variability. The main finding is that the 5{\%} wind power penetration in 2025 will increase the use ofshort-term automatic reserves by approximately 2{\%}.",
author = "S{\o}rensen, {Poul Ejnar} and Marisciel Litong-Palima and Hahmann, {Andrea N.} and Schalk Heunis and Marathon Ntusi and Hansen, {Jens Carsten}",
year = "2017",
doi = "10.17159/2413-3051/2017/v29i1a2067",
language = "English",
volume = "29",
journal = "Journal of Energy in Southern Africa",
issn = "1021-447X",
publisher = "Energy Research Institute, University of Cape Town",
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Wind power variability and power system reserves in South Africa. / Sørensen, Poul Ejnar; Litong-Palima, Marisciel; Hahmann, Andrea N.; Heunis, Schalk; Ntusi, Marathon; Hansen, Jens Carsten.

In: Journal of Energy in Southern Africa, Vol. 29, No. 1, 2017.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Wind power variability and power system reserves in South Africa

AU - Sørensen, Poul Ejnar

AU - Litong-Palima, Marisciel

AU - Hahmann, Andrea N.

AU - Heunis, Schalk

AU - Ntusi, Marathon

AU - Hansen, Jens Carsten

PY - 2017

Y1 - 2017

N2 - Variable renewable generation, primarily from wind and solar, introduces new uncertainties in the operation of power systems. This paper describes and applies a method to quantify how wind power development will affect the use of short-term automatic reserves in the future South African power system.The study uses a scenario for wind power development in South Africa, based on information from the South African transmission system operator (Eskom) and the Department of Energy. The scenario foresees 5% wind power penetration by 2025. Time series for wind power production and forecasts are simulated, and the duration curves for wind power ramp rates and wind power forecast errors are applied to assess the use of reserves due to wind power variability. The main finding is that the 5% wind power penetration in 2025 will increase the use ofshort-term automatic reserves by approximately 2%.

AB - Variable renewable generation, primarily from wind and solar, introduces new uncertainties in the operation of power systems. This paper describes and applies a method to quantify how wind power development will affect the use of short-term automatic reserves in the future South African power system.The study uses a scenario for wind power development in South Africa, based on information from the South African transmission system operator (Eskom) and the Department of Energy. The scenario foresees 5% wind power penetration by 2025. Time series for wind power production and forecasts are simulated, and the duration curves for wind power ramp rates and wind power forecast errors are applied to assess the use of reserves due to wind power variability. The main finding is that the 5% wind power penetration in 2025 will increase the use ofshort-term automatic reserves by approximately 2%.

U2 - 10.17159/2413-3051/2017/v29i1a2067

DO - 10.17159/2413-3051/2017/v29i1a2067

M3 - Journal article

VL - 29

JO - Journal of Energy in Southern Africa

JF - Journal of Energy in Southern Africa

SN - 1021-447X

IS - 1

ER -