Analisis Kerja Rele Overall Differential pada Generator Unit I PLTA Ketenger PT Indonesia Power UBP Mrica
Abstract: Plant has two
important equipment that are the generator and transformer. Therefore, it
should be protected well by the overall differential relay. This relay must be
reliable from the disturbances that might arise. In this study a simulation was
conducted to obtain and test the overall differential relay setting at
generator unit 1 PLTA Ketenger. Modelling was done with MATLAB Simulink 7.0.1
to check the overall differential relay protection system from
potentialproblems. The model was given several disturbances, namely 1) short
circuit fault in the security area, 2) short circuit fault outside the security
area, and 3) lightning disturbances when damaged arrester. From the simulation
results, the overall differential relay operating current is 1.73 A (primary
side) and 1.64 A (secondary side). The results show that the overall
differential relay provides a good response, except in the lightning fault with
a current above 9x109 A (going the mismatch). For handlingthis problem another
arrester should be added.
Penulis: Hari Prasetijo,
Firman Arif Romadhona
Kode Jurnal: jptindustridd100095