Generator

Under construction.

Performance

The following performance calculations are available on generator instances.

Calculation Reference Output Tags
Cooling water range   .c3.dT.use
Generator efficiency   .efficiency.use
Power Factor   .powerFactor.use

Calculations

Cooling Water Range

$$T_{r} = T_{cwout} - T_{cwin}$$

Where:

  • $T_{r}$ = Generator cooling water range temperature $(^{0}C)$
  • $T_{cwout}$ = Generator cooling water outlet temperature $(^{0}C)$
  • $T_{cwin}$ = Generator cooling water inlet temperature $(^{0}C)$

In CAS terms:

$$gen.c3.dT.use = gen.c3out.prop.temp.use - gen.c3in.prop.temp.use$$

The generator efficiency is determined by fitting a second order polynomial to the generator efficiency design data, where:

Generator Loss

The generator Loss:

$$Loss = aQ_{GEN}^{2} + bQ_{GEN} + c$$

In CAS terms:

$$turb.gen.c4out.energyFlow.use = aturb.gen.c2out.energyFlow.use^{2} + bturb.gen.c2out.energyFlow.use + c$$

Efficiency

The Generator Efficiency is determined by:

$$\eta_{GEN} = \frac {Q_{GEN}} {Mechanical Energy In}$$

In CAS Terms:

$$.efficiency.use = \frac{.c2out.energyFlow.use}{.c2in.energyFlow.use}$$

Power Factor

The power factor is determined by if not available from the plant:

$$PF = \frac{Q_{GEN}}{Q_{GEN} + Q_{reactive}}$$

Where:

  • $PF$ = Power factor
  • $Q_{reactive}$ = Generator reactive power

In CAS terms:

$$.powerFactor.use = \frac{.c2out.energyFlow.use}{.c2out.energyFlow.use + .reactivePower.use}$$

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