ELECTRICAL POWER SYSTEM NOTES for Android – Latest Version & Features

IN THIS APPLICATION HAS THE FOLLOWING TOPICS 1.
PROTECTION- protective schemes(i)core balanced protective schemes.(ii) merz-price protective schemes.(iii) pilot(iv) pilot-less.- types of relay systems(i) permanent magnet moving coil.(i) balanced beam(ii) induction type carrying relay(iv) the distance relay(v)non-directional relay(vi)solid state relay.-types of unit protection(i)generator protection(ii) transformer protection(iii) feeder protection- non-unit protection(i)directional current protection(ii) distance protection(iii) gradient time protection2.OVERHEAD LINE CONSTRUCTION - conductor/mechanical vibration(i) swinging(ii)dancing(iii) jumping(iv) high frequency vibration- sag and tension(i)ca-ternary method-corona phenomenon(i)disruptive (ii)visible(iii)critical(iv)power loss- operation of synchronous phase modifies(i)lagging and leading (ii)volt drop compensation3.
OVERHEAD LINE TRANSMISSION- classification of transmission lines(i)short, medium and long lines- causes of surges in transmission line(i)direct and indirect lighting stroke(ii)open circuited lines(iii)short circuited lines(iv)an arching ground faults--phenomenon surges explanation in transmission line(i)surge velocity(ii)surge impedance(iii)open circuited and short circuited lines--protection of transmission line against surges(i)overhead earth wire(ii)horn gaps(iii)silicon and zinc oxides surge diverts(iv)Peterson coil4.UNSYMMETRICAL FAULTS--types of power line faults(i)single phase to ground fault (L - G)(ii)3-phase faults (L - L -L)(iii)double line to ground fault (L - L - G)--description of symmetrical components(i)positive, negative and zero sequence vector(ii)Impendence connection matrices for fault(iii)equivalent circuit for unsymmetrical fault--operation of equivalent circuit and phase sequence matrix5.
POWER SYSTEM STABILITY--synchronous generator stability(i)power transfer regulation(ii)derivation of equal area of criterion(iii)change of load(iv)change in transfer reluctance due to switches(v)change in transfer reactance due to faults--derivation of swing equation--swing cap--methods of improving both transients and steady state stability