POWER SYSTEM FAULTS VIRTUAL

Any abnormal conditions which causes flow of huge current in the conductors or cable through inappropriate paths in the circuit can be defined as a fault. In normal operating conditions all the circuit elements of an electrical system carry currents whose magnitude depends upon the value of the generator voltage and the effective impedances of all the power transmission and distribution system elements including the impedances of the loads usually relatively larger than other impedances. Electrical system must be protected against flow of heavy short circuit currents, which can cause permanent damage to major equipment, by disconnecting the faulty section of system by means of circuit breaker and protective relaying. This is what this course attempt to equip the participants with the skill required in detecting and isolating the inherent faults and thereafter restoring the system to normal operating conditions.