000 02943nas|a2200421 i 4500
005 20260818114755.0
008 280101s2000 th uu m rtt 00| a1eng d
035 _a.b11818839
099 9 _aAIT Thesis no. ET-00-20
100 1 _aKumar, R. Arun
245 1 2 _aA fuzzy logic system for minimization of harmonics under the unbalanced operation of static VAR compensators
260 _aBangkok :
_bAsian Institute of Technology,
_c2000
300 _a70 leaves
490 1 _aThesis ;
_vno. ET-00-20
500 _aA thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering
502 _aThesis (M.Eng.) - Asian Institute of Technology
520 _aIn modern power systems, there has been a tremendous growth of single-phase non-linear loads supplied from 3-phase distribution systems, which generate unbalanced currents in the system. These non-linear loads cause poor power factor, low efficiency and interference with communication networks. To improve system performance, Thyristor Controlled Static VAR Compensators (SVCs) are already used in power systems, but they introduce additional harmonics in the AC system. The performance of SVCs are measured by, the Telephone Interference Factor (TIF), the Total Harmonic Current Factor (IT) and the Distortion Factor (D). To optimize the operation of SVCs, the unsymmetrical firing of thyristors is required. Fuzzy Logic Systems (FLSs) can be effectively used to control the firing angle of thyristors by using previous knowledge base and Fuzzy rule base with minimum source reactive power and harmonics injection in the power system. This report presents a Rule Based Fuzzy Logic approach to determine an optimum combination of the phase-wise reactive power generation from SVCs to achieve a balanced reactive power supply from AC system based on TIF.
650 1 0 _aFuzzy logic
650 1 0 _aElectric power systems
_xControl
700 0 _aSurapong Chiraratananon,
_eChairperson
700 1 _aDhadbanjan, Thukaram,
_eChairperson
700 1 _aRajapakse, Athula,
_eExamination committee
700 1 _aYu, Cun Yi,
_eExamination Committee
710 2 _aPartial Scholarship,
_eScholarship donor
710 2 _aAIT,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. ET-00-20
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B06806
907 _a.b11818839
_bmnait
_cu
902 _a240401
998 _b0
_c010128
_dm
_ea
_fu
_g2
945 _lmnait
945 _lmnarc
942 _c22
942 _c40
909 _aBarcode : 30050120748909
_bCREATED : 2013-11-20
_cRECORD # : i12747324
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050120347397
_bCREATED : 2016-06-15
_cRECORD # : i13038217
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
999 _c48495
_d48495