Electrical Network Design Studies for Natural Gas Liquefaction Plants

The process requirements of liquefied natural gas (LNG) plants demand a high level of reliability from the supporting electrical power system. Extensive power system studies are required to confirm that the proposed electrical system meets the stringent design requirements. This paper outlines the load-flow, short-circuit, transient-stability and harmonic studies typically undertaken as part of the front end engineering design (FEED) of such a system. Studies confirm the rating of key equipment in the system SLD, ensure that the proposed circuit breaker ratings are adequate and confirm that the dynamic performance of the system is satisfactory. Studies are repeated as the design process proceeds to ensure the delivery of a reliable power system