All-Electric LNG Liquefaction Plants: Technical Challenges and Possible Concept Solutions

All-Electric LNG Liquefaction Plants: Technical Challenges and Possible Concept Solutions

This paper discusses technical challenges posed by large all-electric liquefaction plants, in which the plant refrigeration compressors are driven by electric motors powered by gas-turbine driven electric power generators. The focus is on the interaction between large compressor drives and the elect...

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Bibliographic Details
Published in:2007 IEEE Industry Applications Annual Meeting pp. 2407 - 2413
Main Authors: Sannino, A., Liljestrand, L., Rothman, B., Nestli, T., Kjall-Ohlsson, M., Holsten, P.-E.
Format: Conference Proceeding
Language:English
Published: IEEE 01-09-2007
Subjects:
Compressors
Electric motors
Inverters
Liquefied natural gas
Power generation
Power systems
Refrigeration
Resonance
Robustness
Voltage fluctuations
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Summary:This paper discusses technical challenges posed by large all-electric liquefaction plants, in which the plant refrigeration compressors are driven by electric motors powered by gas-turbine driven electric power generators. The focus is on the interaction between large compressor drives and the electrical system. One issue is interharmonics in the subharmonic range from line-commutated inverter drives, which can cause subsynchronous resonance problems. Furthermore, a few alternatives for improving robustness of grid-connected liquefaction plants against voltage dips are presented.
ISBN:9781424412594
1424412595
ISSN:0197-2618
2576-702X
DOI:10.1109/07IAS.2007.363