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Harmonic Study Analysis in Gas Industrial Facilities Employing Large Variable Frequency Drives
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| Author(s) |
M. Sobota; D. Ban; M. Puzak; D. Ružman; Z. Maljkovic |
| Abstract |
The paper presents a part of the results obtained by calculation and analysis of higher harmonics of voltage and current resulting from the installation of large variable frequency drives (VFD), in a gas industrial facility. Prior to making the decision on replacing the installed gas drivers motors by VFD, it is necessary to analyse the influence of installing VFD on the electric grid both in autonomous operation and when connected to the public power-supply grid. Autonomous plant operation is considered normal plant condition since it has its own gas power plant, and a connection to the power-supply grid only during overhaul or downtime due to breakdown in the plant itself. The plant will require the installation of three variable speed induction motor drives, two of 1800 kW and one of 450 kW capacity, for centrifugal pumps driving. Second 1800 kW drive is in an energy recovery system with hydraulic turbine. Detailed calculations and analysis of the harmonics study have shown that three generating units of 4000 kVA capacity each should operate parallel if the European standard EN 50160 is to be met. |
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| Filename: | EPE-PEMC2002 - T11-033 - Sobota.pdf |
| Filesize: | 342.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-05-13 by System |
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