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246 Gas Turbine Handbook: Principles and Practices<br />

boost compressor/gasifier. Syngas output is increased or decreased as<br />

demanded while the stop ratio and gas control valves remain wide<br />

open.<br />

Features in the Mk. V Speedtronic ® control will handle fuel transfers,<br />

co-firing, purge/extraction valve sequencing, steam injection,<br />

surge protection plus all standard gas turbine control functions.<br />

Verification testing of the modified control system will take place<br />

at General Electric’s Schenectady, NY, controls laboratory. A revised<br />

Mk. V Speedtronic ® control will be connected to a simulation of an<br />

“FA” gas turbine control system. The results will demonstrate and<br />

validate the new control software. (Figure 14-8, Control System Development<br />

Schedule)<br />

SUMMARY<br />

The integrated gasification combined cycle (IGCC) is gaining<br />

acceptance as a clean coal technology with potential for continued<br />

Figure 14-8. Control System Development Schedule.

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