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

Author

Sannino, Ambra ; Liljestrand, Lars ; Rothman, Bengt ; Nestli, Tom ; Kjall-Ohlsson, Martin ; Holsten, Per-Erik

Author_Institution

ABB Corp. Res. Vasteras, Vasteras

fYear

2007

Firstpage

2407

Lastpage

2413

Abstract

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.

Keywords

electric generators; electric potential; electric power generation; gas turbines; refrigeration; all electric LNG liquefaction plants; electric motors; gas turbine driven electric power generators; interharmonics; line commutated inverter drives; plant refrigeration; subharmonic range; subsynchronous resonance; voltage dips; Compressors; Electric motors; Inverters; Liquefied natural gas; Power generation; Power systems; Refrigeration; Resonance; Robustness; Voltage fluctuations;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE

Conference_Location

New Orleans, LA

ISSN

0197-2618

Print_ISBN

978-1-4244-1259-4

Electronic_ISBN

0197-2618

Type

conf

DOI

10.1109/07IAS.2007.363

Filename

4348112