KOORDINASI SISTEM PROTEKSI GARDU TRAFO DISTRIBUSI
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Istiqomah, Fisi
Suwarno, Suwarno
Suwarno, Suwarno
Subject
Teknik Elektro
Datestamp
2019-10-28 04:31:28
Abstract :
The distribution network plays an important role in the distribution of electric power to consumers. In general, the distribution network most frequently experienced disorders in particular disorders of the short circuit. For securing distribution channel, especially distribution transformers in order to avoid distractions and not to the detriment of the customer. it requires the protection equipment that is reliable . The magnitude of short circuit current interruption that occurs will be the reference for the selection of capacity and working time of the protection equipment that is used to secure the network and distribution transformer such as Over Current Rellay, Fuse Cut Out and NH Fuse. Based on the calculations that have been done when there is interference at a distance of 7.5 km from the Substation by 7,7809 kA then the protection equipment that works first is the Fuse Cut Out with a capacity of 8 A with A termination time of 0.1-300 seconds, then if the Fuse fails to work then the Over Current Rellay who will work with the TMS 0.22 and time of labor to 0.39 seconds. To disorders that occur at the ends of the feeders by 4,4561 kA the magnitude of the capacities of the Fuse Cut Out at 6.3 A with A termination time of 0.1-300 seconds , and if the Fuse fails to work then NH Fuse that will work to protect the transformer with a capacity of 1250 A with a working time of 5-10 seconds.
The distribution network plays an important role in the distribution of electric power to consumers. In general, the distribution network most frequently experienced disorders in particular disorders of the short circuit. For securing distribution channel, especially distribution transformers in order to avoid distractions and not to the detriment of the customer. it requires the protection equipment that is reliable . The magnitude of short circuit current interruption that occurs will be the reference for the selection of capacity and working time of the protection equipment that is used to secure the network and distribution transformer such as Over Current Rellay, Fuse Cut Out and NH Fuse. Based on the calculations that have been done when there is interference at a distance of 7.5 km from the Substation by 7,7809 kA then the protection equipment that works first is the Fuse Cut Out with a capacity of 8 A with A termination time of 0.1-300 seconds, then if the Fuse fails to work then the Over Current Rellay who will work with the TMS 0.22 and time of labor to 0.39 seconds. To disorders that occur at the ends of the feeders by 4,4561 kA the magnitude of the capacities of the Fuse Cut Out at 6.3 A with A termination time of 0.1-300 seconds , and if the Fuse fails to work then NH Fuse that will work to protect the transformer with a capacity of 1250 A with a working time of 5-10 seconds.
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