Understanding power factor calculation
To calculate a power factor adjustment it is necessary to know the actual Power Factor (PFa) of the service point. The service point must either contain a service point channel with a PF Unit Of Measure, or it must contain separate service point channels for at least two sides of the power triangle. The actual service point channels that the rate engine uses to calculate PFa is determined by the value in the Select Power Factor Calculation Field on the Power Factor Adjustment dialog.
The following table describes the different calculation methods for PFa.
|
Option |
Description |
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|---|---|---|---|
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KW, KVA |
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PFa is calculated by dividing the kW determinant value by the kVa determinant value. |
|
|
KW, KVAR |
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PFa is calculated using the formula to the right using kW and kVar determinants. |
|
|
KWH, KVARH |
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PFa is calculated using the formula to the right using kWh and kVarh determinants. |
|
|
PF |
PFa is equal to the PF determinant value. |
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IEE provides the option to specify the level to which the PFa value is rounded. From the Power Factor Adjustment dialog, you can specify if rounding precision is enabled and to what level of precision should be used.