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The current in a transmission line under no load conditions is due to:
- a)Spinning reserve
- b)Corona effects
- c)Capacitance of the line
- d)Back flow from earth
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The current in a transmission line under no load conditions is due to:...
During no load condition, the current flowing is only charging current due to line capacitance. It increases the capacitive var in the system.
Since the line is under no load the line inductance will be less. Therefore, the capacitive var becomes greater than inductive var during no load or light load condition.
Due to this phenomenon the receiving end voltage becomes greater than sending end voltage. This effect is also called Ferranti effect.
Most Upvoted Answer
The current in a transmission line under no load conditions is due to:...
Capacitance of the line:
The current in a transmission line under no load conditions is primarily due to the capacitance of the line. This capacitance allows for the storage of electric charge, which can result in a small current flow even when there is no external load connected to the line.
Explanation:
- When a transmission line is energized, the conductors and the insulating material between them form a capacitor.
- This capacitance allows for the accumulation of electric charge, creating an electric field between the conductors.
- Even in the absence of a load, this electric field can cause a small current to flow through the line due to the displacement of charges within the capacitance of the line.
- This current is typically very small and is known as the capacitive current.
Significance:
- The presence of capacitance in transmission lines can have implications for overall system performance and efficiency.
- It can impact the power factor of the system and can lead to losses in the form of reactive power.
- It is important for system operators to account for capacitance when designing and operating transmission lines to ensure optimal performance and efficiency.
The current in a transmission line under no load conditions is primarily due to the capacitance of the line. This capacitance allows for the storage of electric charge, which can result in a small current flow even when there is no external load connected to the line.
Explanation:
- When a transmission line is energized, the conductors and the insulating material between them form a capacitor.
- This capacitance allows for the accumulation of electric charge, creating an electric field between the conductors.
- Even in the absence of a load, this electric field can cause a small current to flow through the line due to the displacement of charges within the capacitance of the line.
- This current is typically very small and is known as the capacitive current.
Significance:
- The presence of capacitance in transmission lines can have implications for overall system performance and efficiency.
- It can impact the power factor of the system and can lead to losses in the form of reactive power.
- It is important for system operators to account for capacitance when designing and operating transmission lines to ensure optimal performance and efficiency.
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