The following information was submitted:
Transactions: INTERNATIONAL JOURNAL of CIRCUITS, SYSTEMS and SIGNAL PROCESSING
Transactions ID Number: 19-662
Full Name: Chi-Jui Wu
Position: Professor
Age: ON
Sex: Male
Address: 43, Keelung Road Section 4, Taipei, 106
Country: TAIWAN
Tel: 886-2-27376676
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Fax:
E-mail address: cjwu@mail.ntust.edu.tw
Other E-mails: cjwu@mouse.ee.ntust.edu.tw
Title of the Paper: voltage sag planning of industry power system using hybrid differential evolution considering CBEMA curve
Authors as they appear in the Paper: Yao-Hung Chan, Chi-Jui Wu, Wei-Neng Chang, and Ying-Pin Chang
Email addresses of all the authors: cjwu@mail.ntust.edu.tw
Number of paper pages: 10
Abstract: This paper is used to investigate the voltage sag planning of a radial industrial power system using the hybrid differential evolution (HDE) method. The analysis considers the CBEMA curve and coordination of over-current relays. Firstly, the analytical equations for direct calculation of voltage sag are investigated to obtain the sag severity of the system after single or three-phase faults. The equations are useful in the planning procedures using HDE. Then, the effect of over-current relay setting on the sag duration is evaluated. Finally, the HDE is used to obtain the impedance values of transformers considering the CBEMA curves. The relay time multiplier factor is also a variable. The test on a radial industrial power system with three ¡µ/Y-g connected transformers is chosen to reveal the effectiveness of this method. The study results show that the voltage sag severity can be controlled by the structure of the power system, the transformer impedances, and the !
relay setting.
Keywords: Voltage sag, over-current relay, power quality, CBEMA curve, hybrid differential evolution method
EXTENSION of the file: .pdf
Special (Invited) Session: Voltage Sag Analysis of Industry Power System Considering CBEMA Curve
Organizer of the Session: 635-208
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