BNR Calculator for Substations (SIGET)
Formula Explanations:
Parameters Explained:
1. Voltage (kV): This represents the electric potential difference and is usually given in kilovolts (kV). In substations, voltage level is crucial as it directly impacts the infrastructure required.
2. Power (MW): Power is the rate at which electricity is delivered to or from the substation and is generally measured in megawatts (MW).
3. Demand Factor (%): This is a percentage factor that represents the expected load usage or peak demand over time relative to the maximum possible load. For example, a demand factor of 80% means that the substation typically operates at 80% of its maximum load capacity.
Example Formula:
The formula used here is:
BNR = (Power × Demand Factor) / (Voltage × 1000)
Numerator (Power × Demand Factor
): This combines the actual power requirement of the substation with the demand factor. By multiplying these, you obtain an adjusted power value that reflects real-world demand.
Denominator (Voltage × 1000
): Voltage is scaled up by 1000 to ensure unit consistency since Power is in MW and Voltage is in kV.
Example Calculation:
Suppose:
- Voltage = 20 kV
- Power = 50 MW
- Demand Factor = 80%
Substitute these into the formula:
BNR = (50 × 80) / (20 × 1000) = 0.20
So, the BNR would be 0.20 based on this specific setup.
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