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Comparison of stochastic and deterministic security constrained optimal power flow under varying outage probabilities
KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.
KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.ORCID iD: 0000-0002-8189-2420
2019 (English)In: 2019 IEEE Milan PowerTech, PowerTech 2019, Institute of Electrical and Electronics Engineers (IEEE), 2019, article id 8810833Conference paper, Published paper (Refereed)
Abstract [en]

Increasing penetration of renewables and focus on cost efficiency means that power systems are operated closer to security limits. It has been suggested that the traditional N-l approach to security is unsatisfactory as it does not consider the likelihood and severity of contingencies. In this paper we investigate a stochastic version of security-constrained optimal power flow (S-SCOPF), which considers outage probabilities when deciding the optimal dispatch. Both a priori dispatch costs and realized real time costs are considered to evaluate the usefulness of the S-SCOPF a s opposed to the deterministic SCOPF (D-SCOPF). For low outage probabilities the S-SCOPF gives lower total costs, achieved by reducing the security for contingency situations. For high outage probabilities the two methods give the same dispatch. The robustness of the S-SCOPF to errors in the outage probability is also investigated. Underestimating the true outage probability results in the S-SCOPF giving higher total costs.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2019. article id 8810833
Keywords [en]
OPF, Probabilistic security, SCOPF
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-262637DOI: 10.1109/PTC.2019.8810833Scopus ID: 2-s2.0-85072337547ISBN: 9781538647226 (print)OAI: oai:DiVA.org:kth-262637DiVA, id: diva2:1361995
Conference
2019 IEEE Milan PowerTech, PowerTech 2019; Milan; Italy; 23 June 2019 through 27 June 2019
Note

QC 20191017

Available from: 2019-10-17 Created: 2019-10-17 Last updated: 2019-10-17Bibliographically approved

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Nycander, ElisSöder, Lennart

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CiteExportLink to record
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