AI SearchDevelopment of a simulation model of an electric arc furnace for harmonic distortion and flicker level estimation (Record no. 28962)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 04424nas|a2200397 i 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818090724.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 280101s2000 th uu m rtt 00| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11818852 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no. ET-00-22 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Rajapakse, Thiromi Renuka |
| 245 10 - TITLE STATEMENT | |
| Title | Development of a simulation model of an electric arc furnace for harmonic distortion and flicker level estimation |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2000 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 89 leaves |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. ET-00-22 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Among various power-polluting apparatus, electric arc furnace (EAF) is considered as an exceptional case, since it contributes for multitude of problems such as transients, harmonics, voltage imbalance and voltage flicker. Finding means for mitigation of these undesirable effects requires extensive studies, which are often based on computer simulations. Such studies largely depend on the availability of an accurate simulation model. In this study, a simulation model of an EAF based on the field measurements was developed. The model includes dynamic behavior of the electric arc and stochastic variations in the arc resistance during the initial melting period, which results in worse conditions in terms of voltage flicker and harmonics and was implemented in EMTDC. Accurate representation of electric arc requires modeling of the dynamic behavior of the arc due to nonlinear V -I characteristics as well as the changes in the equivalent arc resistance due to scrap and electrode movements. The changes due to latter ranges from momentary short circuits to open circuits and occur in a random fashion. These random changes were incorporated into classical Cassie arc model as random changes in the arc resistance to derive a realistic representation of the behavior of electric arc furnace. A novel feature of this study is the systematic treatment of this randomly changing part of the arc resistance. Analysis of the frequency spectrums and the auto-correlation functions of the noise samples indicated that the random deviations of arc resistance can be approximately represented by a first order Markov process. The parameters of this first order noise model were estimated from the sample waveforms using standard techniques adopted in signal processmg. Computer simulation of the EAF model and its supply circuit was implemented in EMTDC. Analysis of harmonics of the simulated voltages and currents at different points of the supply system are generally in agreement with field measurements, although one to one comparison is impossible due to the non-characteristic nature. Flicker calculations were performed using an IEC flicker meter simulated in MATLAB SIMULINK environment. Simulated instantaneous flicker level and short duration (2s) PST are in the range of those of the measured waveforms. Further, the simulation model developed was used for investigating the flicker and harmonics levels under the simultaneous operation of two EAFs present in the BSI steel mill. The developed model can be used to study the adverse effects of electric arc furnace operation under various scenarios and options for their mitigation through simulations. |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Electric furnaces |
| General subdivision | Simulation methods |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Surapong Chiraratananon, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Yu, Cun Yi, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rajapakse, Athula, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Dhadbanjan, Thukaram, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. ET-00-22 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B06811">http://203.159.5.9/ait-thesis/detail.php?q=B06811</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11818852 |
| b | mnait |
| c | u |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240401 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 010128 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | u |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120748925 |
| CREATED | CREATED : 2013-11-20 |
| RECORD Id | RECORD # : i12747348 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 1 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120347413 |
| CREATED | CREATED : 2016-06-15 |
| RECORD Id | RECORD # : i13038230 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no. ET-00-22 | 30050120748925 | 18/08/2026 | 3 | 18/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no. ET-00-22 | 30050120347413 | 18/08/2026 | 18/08/2026 | 40-Archives |