What Is the Corona Loss Transmission Line Calculator (Peek Formula)?
Corona loss is the active electrical power dissipation resulting from air ionization around high-voltage conductors.
How Does the Corona Loss Transmission Line Calculator (Peek Formula) Work?
Determines critical disruptive voltage Vd.
If phase voltage V exceeds Vd, evaluates Peek formula for power loss per phase.
Sums loss over 3 phases and line length.
Corona Loss Transmission Line Calculator (Peek Formula) Formula & Variables
The core mathematical equation utilized by this calculator is expressed as:
P = (242.2/δ)·(f + 25)·√(r/D)·(V - Vd)²·10⁻⁵ kW/km/phase, Vd = 21.2·m₀·r·δ·ln(D/r)
Peek empirical equation for disruptive voltage and corona dielectric loss.
How to Use the Corona Loss Transmission Line Calculator (Peek Formula)
- Input operating voltage and frequency.
- Specify conductor dimensions and atmospheric air density.
Step-by-Step Example Calculation
220 kV Overhead Line in Fair Weather
Input Values:
operatingVoltage:220
frequency:50
conductorRadius:1.2
conductorSpacing:300
airDensityFactor:1
irregularityFactor:0.9
lineLength:100
Worked Steps: 220 kV line with 1.2 cm radius conductors spaced 3 meters apart.
Understanding Your Result
Primary output indicates total line corona loss in kW.
Summary reports critical disruptive voltage and activity status.
Factors That Affect the Result
- Conductor radius (larger radius or bundled conductors increase Vd and suppress corona).
- Weather (rain and fog increase corona loss by a factor of 10 or more).
When Should You Use This Calculator?
- EHV/UHV transmission line design and conductor bundling decisions.
Assumptions & Limitations
- Fair-weather Peek formula; wet weather requires empirical multipliers.
Frequently Asked Questions
Calculation Accuracy & Reference Note
Peek (1929) classical equation.