5- Ferranti effect check: this constrain is important for rising voltages in the end of the line.
the main contribution of this paper is using the Ferranti effect as an important constrain during restoration, besides the load priority method have been first during guidance plan which reduce the time of inter network connection.
Due to Ferranti effect
voltage increases at the receiving end on 500 kV Grid Station Dadu upto 590 kV and causes tripping and system failure.
The main causes for power frequency and its harmonic overvoltages are sudden loss of loads, disconnection of inductive loads or connection of capacitive loads, Ferranti effect
, unsymmetrical faults and saturation in transformer, etc .