Advantages and Disadvantages of Corona

Advantages and Disadvantages of Corona

The various advantages of corona effect are,

1. Due to corona, the air surrounding the conductor is ionised and becomes conducting. This increases the virtual diameter of the corona.

2. Corona reduces the effects produced by the surges and conductor is saved from possibility of lightning. It acts as a safety device.

The various disadvantages of corona are,

1. The corona power loss is the biggest disadvantage which reduce the transmission efficiency.

2. The third harmonic components produced due to corona makes the current nonsinusoidal. This increases the corona loss.

3. The ozone gas formed due to corona chemically reacts with the conductor and can cause corrosion.

Review Question

1. State the advantages and disadvantages of corona.