The GE IC3600SZA1 card may be a Droop control card in the GE Fanuc Speedtronic Mark I&II gas turbine control system. Based on our understanding of the previous GE IC3600L * * * components and the concept of droop control in gas turbines, the reasons are as follows:
General Electric Fanuc Gas Turbine System: The prefix “GE IC3600″ indicates that it is designed for the control system of the General Electric Fanuc series gas turbines.
SS: Potential connection with speed control: Similar to components previously equipped with “SS” (SSLD1 set point control), this may be related to the speed control function inside the turbine.
Speed reduction control of gas turbines:
In the application of parallel operation of multiple gas turbines for power generation, droop control is a key function to ensure that they share the load proportionally.
The working principle of deceleration control is to adjust the governor setting value (required speed) of each turbine based on its output power. As the turbine load increases, its speed slightly decreases due to its inherent droop characteristics.
The decrease in speed is detected by the descent control card, thereby lowering the governor setting of the turbine. This allows other turbines to increase speed and bear some additional loads.

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