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Sending End Power Formula:
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Sending End Power is defined as the power at receiving end of a short transmission line. It represents the power injected into the transmission line from the source or injectors.
The calculator uses the Sending End Power formula:
Where:
Explanation: The formula calculates the three-phase power at the sending end of a short transmission line, accounting for the phase angle difference between current and voltage.
Details: Accurate calculation of sending end power is crucial for power system analysis, transmission line efficiency evaluation, and system stability assessment in electrical engineering applications.
Tips: Enter sending end current in amperes, sending end voltage in volts, and sending end phase angle in radians. All values must be valid (current > 0, voltage > 0).
Q1: What is the significance of the phase angle in power calculation?
A: The phase angle represents the difference between current and voltage waveforms, and the cosine of this angle (power factor) determines the real power component in AC systems.
Q2: Why is the formula multiplied by 3?
A: The multiplication by 3 accounts for the three-phase nature of the power system, calculating the total power across all three phases.
Q3: What units should be used for the phase angle?
A: The phase angle should be entered in radians for accurate calculation with the cosine function.
Q4: Can this calculator be used for single-phase systems?
A: For single-phase systems, remove the factor of 3 from the calculation and use P_s = I_s × V_s × cos(Φ_s).
Q5: What are typical values for sending end power in transmission systems?
A: Sending end power values vary widely depending on the system, ranging from kilowatts to megawatts in practical transmission systems.