Security and stability control system for offshore platforms power grid

The key technology for offshore platform power grid interlinked-Energy Management System (EMS) is studied in this article. The perfect EMS control solutions are formulated and carried on by the studies of the control strategies of frequency control, voltage control, precedence load shedding, high frequency trip generator, communication failure, and so on according to the power flow and fault simulation calculations against all kinds of working modes of the grid. The power supply effects before and after using the power grid interlink and EMS control are contrasted. Their application has improved the power supply reliability, boosted up the ability against impacts, decreased the spare capability of generators, reduced the maintenance work, and saved the investment.