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Stochastic optimal power flow by multi-variate Edgeworth expansions
Lund University. (Waves signals and systems)ORCID-id: 0000-0003-3111-4820
2014 (engelsk)Inngår i: Electric power systems research, ISSN 0378-7796, E-ISSN 1873-2046, Vol. 109, s. 90-100Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Stochastic optimal power flow can provide the system operator with adequate strategies for controlling the power flow to maintain secure operation under stochastic parameter variations. One limitation of stochastic optimal power flow has been that only steady-state variable limits have been used as security constraints. In many systems voltage stability and small-signal stability also play an important role in constraining the operation. Recently an extension of the stochastic optimal power flow formulation that included constraints for voltage stability as well as small-signal stability was proposed. This was done by approximating the voltage stability and small-signal stability constraint boundaries with second order approximations in parameter space. In this article an alternative solution method to this problem will be proposed. The new improved solution method, which is based on Edgeworth series expansions, is both more efficient and accurate. We also give details on convexity of the problem and discuss some computational issues.

sted, utgiver, år, opplag, sider
2014. Vol. 109, s. 90-100
HSV kategori
Forskningsprogram
Fysik, Elektroteknik alt Electrical engineering
Identifikatorer
URN: urn:nbn:se:lnu:diva-61557DOI: 10.1016/j.epsr.2013.12.011OAI: oai:DiVA.org:lnu-61557DiVA, id: diva2:1083525
Tilgjengelig fra: 2017-03-21 Laget: 2017-03-21 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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