GtAnalysis improves the operating margin of electric generators facing
a deregulated electric market by identifying adverse performance operation
so you can take appropriate action.
Given the competitiveness of todays market many new and existing facilities
can have significant hidden costs that could be returned to the plant
owners. These costs are in the form of unexpected component performance
degradation, shifted control instrumentation, OEM's trying to minimize
liquidated damages for output and heat rate guarantee test by manipulating
the firing temperature of the turbine, faulty fuel calibrations, or taking
advantage of known biased instrument measurement errors.
What can a Power Plant Analytical Performance Assessment Reveal?
A Gas Turbine and Combined Cycle Equipment Performance Analysis can
reveal hidden problems for example such as the issues that are listed
below. Please note the list below is a sample of actual occurrences experienced
by our staff over the years.
Fuel Flow meter calibration and Measurement incorrect - This is a
very common problem as many know how difficult it is to actually measure
fuel consumption. However, by completing a thorough gas turbine cycle analysis
identifies with high confidence the error level.
Incorrect Power Measurement using Rotating Watt-hour Meter or Digital
Meter - The OEM's know very well which direction the bias error is
on these meters and will specify their guarantees with significant
tolerances around this measurement. You should be aware of the bias
Gas Turbine Overfiring to Minimize Performance Liquidated Damages
- With corporate programs such as six sigma, where no failure is tolerated,
there is a strong tendency to manipulate this control level. It is
part of the complexities of understanding gas turbine operation that
the OEM's have noticed little awareness in the electric power generation
Exhaust Thermocouple Measurement Analysis Verification - Many exhaust
thermocouple material types will result in a hot shift ( an indicated
measurement that is higher than the actual measurement). As a result
of this inaccuracy there is a bias coefficient in the control to account
for this. However, with varying quality levels from parts venders
and the OEM's inability to diligently keep track of the bias, your
unit may be either underfired and losing valuable generation revenue
or overfired consuming hot section life and emitting higher than
- Compressor flow capacity loss from Extended Operation or Compressor
Damage - Flow loss is a common degradation and for the most part can
be recoverable, however, damage can occur that will be masked by a flow
shift. Knowing to go right to the suspected component problem can save
your operations staff valuable time.
These are just a few examples of many areas of power plant equipment
operation that may have a problem unknown to you. Of course there are many
more, and GtAnalysis offers the expertise to identify and quantify any
deficiency. Our fees will be significantly lower than any large OEM or
AE firm and will be miniscule in comparison to your cost savings through
problem corrective actions.