SWITHGEAR AND PROTECTION

FAULT AND ABNORMAL CONDITIONS

The abnormality conditions may exist in a power system due to following reason

•     Operational fault work fault
•       system or network fault 

       

Faults:

Faults are inevitably occur in a power system and cannot be completely eliminated

The Probability of having a fault can be reduced by following methods

•   Good design with sophisticated protection system
•     Better maintenance (plan maintenance)
•   Adopting proper operating procedure
• The main objective of protective system is to minimize the impact of faults and maintain quality power supply(continuity or reliability) as possible.

Outcomes during a fault in the system;

•  Abnormal conditions may exist in the system.
•  System probably be unbalance
•  Loosing synchronize of some generators and lines
•  Loosing stability of transmission lines and generators
•   Arcing, Fire, Flash over may be taken place due to desecration of insulation
•   Damage of equipment
•   Mal-operation of the equipment
•   Personal hazards
•   Exist transmission conditions
•   Leeds to total failure