Monday 17 November 2008

Wseas Transactions

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Transactions: WSEAS TRANSACTIONS ON POWER SYSTEMS
Transactions ID Number: 31-727
Full Name: Muwaffaq Alomoush
Position: Associate Professor
Age: ON
Sex: Male
Address: Depertment of Electrical Power Engineering, Hijjawi Faculty for Engineering Technology
Country: JORDAN
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E-mail address: ma@yu.edu.jo
Other E-mails: m.alomoush@yahoo.com
Title of the Paper: Incorporating Voltage Stability Limit in Competitive Energy Market Optimal Dispatch
Authors as they appear in the Paper: muwaffaq i. alomoush
Email addresses of all the authors: ma@yu.edu.jo
Number of paper pages: 10
Abstract: In restructured power systems, it has been a common practice to maximize a social-welfare function to find the optimal dispatch schedules of generators and loads. Voltage stability limit is usually ignored in this dispatch decision process. Even though exclusion of voltage stability limits from dispatch process may yield more economic schedules, this dispatch may lead to a less secure operation of the system, where the system may operate very close to the voltage collapse point. Therefore, this paper explores the representation of the steady-state stability limit in the social-welfare optimization process of an energy market that involves both spot and bilateral contracts. The paper investigates impacts of considering satiability limit, with and without bilateral contracts, on energy market outcomes such as social welfare, degree of fulfillment of spot market transactions, energy prices, and total system generation or load. The paper shows that incorporating stabil!
ity limits in system modeling tends to decrease social welfare value, increase energy prices, reduce system utilization, and may reduce feasibility of desired spot market transactions.
Keywords: Bilateral Contracts, Restructured Power System, Voltage Stability Limit, Social-Welfare, Spot Market.
EXTENSION of the file: .doc
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