Electrical Network Studies for Industrial/Petrochemical Plants

Extensive power system studies are required to confirm that the proposed electrical systems for new build industrial and petrochemical plants satisfy 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. These are illustrated using as an example an LNG liquefaction plant. Studies confirm the rating of key equipment in the system SLD, ensure that 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