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Rapid changes in fuel composition can lead to trips, high dynamics, and incipient lean blowout. Upgrade your existing LM2500 and LM6000 gas turbines with GE’s fuel variability control for increased system response.
response to fuel property changes vs. chromatograph
fuel variance capability
Time to install
GE’s fuel condition variability monitoring system uses a combination of GC, WIM, buffer volume, and a controls algorithm. This system provides early and quick detection of fuel variability in lower heating value (LHV) and specific gravity (SG) which otherwise may cause engine operability trouble (such as trips).
Eliminate the following under significant fuel condition changes:
As compared to existing gas chromatograph (GC) and Wobbe Index Meter (WIM) technologies alone, this modification to the fuel system accommodates fast, significant gas fuel condition changes. Your LM2500 and LM6000 will benefit from:
The fuel variability monitoring system is a means to adjust the fuel schedule to maintain continuous operation of turbines through significant changes in gas fuel properties. Meet emission requirements and more, with:
A buffer volume device located downstream of the fuel sensing point adds an adaptive control algorithm to improve the fuel variability capabilities of the entire system. Your engine-control software is modified to accommodate the new tracking algorithms.
The new controls system algorithm generates a time-resolved map that links fuel properties and flow conditions—helping the engine to maintain high operability, even in the most aggressive transient gas property changes.
Our proprietary “GE algorithm" system provides the fastest possible response time for fuel property variation compared to the other conventional methods (over 250 times more responsive than a GC alone).
This improvement in responsiveness and ability to operate the gas turbine has been demonstrated and validated under detailed testing conditions with actual engines and real fuel property changes.