NDLI: Application of null space method in computing electricity prices with voltage-stability constraints

Content Provider	IEEE Xplore Digital Library
Author	Lin, J. Hesamzadeh, M.R. Galland, O.
Copyright Year	2014
Description	Author affiliation: PJM Interconnection, Audubon, PA, USA (Lin, J.) \|\| KTH R. Inst. of Technol., Stockholm, Sweden (Hesamzadeh, M.R.) \|\| Coll. of Eng. & Archit. of Fribourg, Fribourg, Switzerland (Galland, O.)
Abstract	Nodal pricing is used in electricity markets around the world to facilitate the electricity trading among market participants. The nodal prices are computed by finding the shadow prices of the energy balance and branch constraints in the optimization problem at each node for each market period. The conventional approach to compute the nodal prices is by formulating a security-constrained economic dispatch using DC power flow equations, which ignore the voltage constraints. However, voltage-demand dependence at each electrical node is well studied in the area of voltage stability. In this paper, we first model the voltage constraints using the null space methodology. Then, we derive the voltage-price relationship at each node by deriving two different curves - voltage-demand curve, and price-demand curve - for each node of the system. This information on voltage-price relationship can be useful for better understanding of the economics of voltage support and also for pricing voltage regulation as a novel ancillary service.
Starting Page	1
Ending Page	7
File Size	350355
Page Count	7
File Format	PDF
ISBN	9781479959044
DOI	10.1109/NAPS.2014.6965449
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Null space Reactive power Voltage control Pricing Generators Mathematical model Equations power system computation voltage stability null space method electricity market nodal pricing
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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