What will happen when power factor is leading in distribution of power?

When the power factor is leading in the distribution of power, it means that the current is leading the voltage in phase, and this can have a number of effects on the power system. Some of these effects include:

Source: electricaltechnology 

Increased voltage levels: 

When the power factor is leading, the voltage levels in the system can increase beyond their normal levels, which can cause damage to equipment and potentially result in system failure.

Increased line losses: 

The leading power factor can also lead to increased line losses in the distribution system, as a result of the boosted voltage levels.

Overheating of equipment: 

The increased voltage levels that can result from the leading power factor can also cause overheating of transformers and other equipment in the system, which can reduce their lifespan and potentially cause them to fail.

Reduced power transfer capacity: 

The leading power factor can also reduce the power transfer capacity of the distribution system, as a result of the increased voltage levels and line losses.

The leading power factor can have a number of negative effects on the distribution of power, and it is generally desirable to maintain a power factor that is close to unity (i.e., neither leading nor lagging).