Monday 23 November 2009

Wseas Transactions

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Transactions: WSEAS TRANSACTIONS ON POWER SYSTEMS
Transactions ID Number: 42-118
Full Name: Kaigui Xie
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Age: ON
Sex: Male
Address: College of Electrical Engineering, Chongqing University, Chongqing
Country: CHINA
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E-mail address: kaiguixie@yahoo.com.cn
Other E-mails: kaiguixie@cqu.edu.cn
Title of the Paper: reliability evaluation of bulk power systems incorporating unified power flow controllers
Authors as they appear in the Paper: Bo Hu, Kaigui Xie, Rajesh Karki
Email addresses of all the authors: kaiguixie@yahoo.com.cn,hboy8361@yahoo.com.cn
Number of paper pages: 10
Abstract: Unified power flow controller (UPFC) is one of the most advanced flexible AC transmission system (FACTS) devices that can simultaneously and independently control both the real and reactive power flow in a transmission line. The utilization of UPFC can result in significant reliability benefits in modern power systems. This paper proposes a novel reliability network model for a UPFC, which incorporates the logical structure and the distinct operating modes of a UPFC. The proposed model divides the UPFC operating modes into seven states, in order to improve the accuracy of the model by recognizing the practical operating states of a UPFC. The new model also incorporates an AC flow-based optimal load shedding approach to assess the impact of bus voltages and reactive power flow on UPFC in order to decide appropriate load curtailment in the reliability evaluation process. The performance of the proposed model is verified using a test system. Various operating schemes,!
such as different placement locations of UPFC, and different capacities of UPFC are used to examine the impacts of UPFC on the system reliability.
Keywords: UPFC, Reliability evaluation, Bulk power system, Load curtailment model, FACTS
EXTENSION of the file: .doc
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