PERANCANGAN KOORDINASI RELE ARUS LEBIH PADA SISTEM LISTRIK INDUSTRI SAMPEL IEEE Std. 242 - 2001 MENGGUNAKAN PROGRAM ETAP POWER STATION 7.5.0
Overcurrent faults in industrial electric systems often occure due to overload and short circuit. An inaccuration of overcurrent relay setting can causes an uncoordination of protection in the system and endangers electrical machines that generally expensive. Relay coordinations in the system IEEE S...
| Main Authors: | , |
|---|---|
| Format: | Thesis |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2013
|
| Subjects: |
| Summary: | Overcurrent faults in industrial electric systems often occure due to
overload and short circuit. An inaccuration of overcurrent relay setting can
causes an uncoordination of protection in the system and endangers electrical
machines that generally expensive.
Relay coordinations in the system IEEE Std. 242 � 2001 are designed using
ETAP software. Settings of each relay can be determined, then simulated a fault
to evidence the relay coordination. Characteristics of electrical machines in the
system are important to be considered at settings of relay.
The successful analysis of relay coordination which doesn�t break over
characteristics of electrical machines is by determining a criteria of success. The
relay coordination is success when if a fault happens in one-bus, relay will trip
started from nearest which doesn�t exceed prtotected capability limits of electrical
machines wherever it can.
Simulations at each bus indicate that the relay coordinations in the system
have been success. The nearest relays to the fault source trip at first time with
time delay between 10 ms to 2.035 seconds and appropriate with kind and
magnitude of fault current. The farthest relays to the fault source trip at last time
with time delay 1.232 seconds to 85.588 seconds. |
|---|