Many Gas Turbine plants operate ON "main fuel oil" as well as "standby fuel oil" to ensure uninterrupted operation. In order to ensure uninterrupted operation of Gas Turbine, due to any problem in the operating fuel oil supply system, it should Be possible for the Gas Turbine to change over to the standby fuel oil system, without interruption in the power generation. It has been observed that present fuel oil pressure control systems with conventional PID controllers are not able to sustain the fuel oil pressure during fuel change over conditions, leading to the trip of the Gas Turbine. A suitable control system has been developed and programmed in DCS system for Fuel oil pressure control system for auto change over from "main fuel oil" to "standby fuel oil" And vice versa of Gas Turbine on load.
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