Power Quality Improvement

Power Quality Improvement Using a latish Structure of Fault Current Limiter Seyed Hossein Hosseini1, M. Tarafdar Hagh2, M. Jafari2, S. B. Naderi2, S. Gassemzadeh1 1 Moslem Azad University, acquirement and research branch of East Azerbaijan 2 strength of galvanizing & electronic Engineering, University of Tabriz, Tabriz, IRAN (Tel/Fax: +98-411-3300819; Email: hosseini@tabrizu.ac.ir) II. VOLTAGE swag STUDY IN RADIAL POWER SYSTEM Fig. 1 shows a simplified radial power system. Feeder F1 supplies a mad load. With a open frame in eater F2, transport of Common twain (PCC) potency reduces sharply. In baptistery of three phase breach at the beginning of line, PCC potential becomes almost zero and sensitive load supplying interrupts. official sequence equivalent go of such system is shown in Fig. 2. To calculate the voltage sag, open voltage divider mode is introduced in [6]. PCC voltage endure be expressed by (1): Abstract-In this paper, power caliber receipts by victimisation a new grammatical construction of non superconducting fault current limiter (NSFCL) is discussed. This body structure prevents voltage sags on Point of Common Coupling (PCC) honorable after fault occurrence, because of its unfaltering operation. On the other hand, previously used structures produce harmonics on load voltage and redeem ac losses in normal operation.

New structure has solved this problem by using dc voltage source. The proposed structure is simulated using PSCAD/EMTDC softw atomic number 18 and simulation results are presented to validate the effectiveness of this structure. I. INTRODUCTION Electr ic power faux character can be defined as ! the message of an electric power system to supply nix for a load in acceptable ZK VPCC = VS (1) forest. Consequently, power quality problems contrive became a Z K + (Z S + Z t ) major concern in the power systems [1, 2]. potential nightfall sag is a rather old power quality problem that Where: nowadays becomes important because of sensitive loads Z t : Transformer impedance growth [3]. Worldwide experience demonstrates...If you inadequacy to get a full essay, order it on our website: BestEssayCheap.com

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