Analisis Daya Aktif Dan Daya Reaktif Pada Sistem Jaringan Wilayah Propinsi Bengkulu Ketika Terjadi Gangguan Transien

Afriyastuti Herawati1 , Pujo Santoso1

1Program Studi Teknik Elektro, Universitas Bengkulu, email : This e-mail address is being protected from spambots. You need JavaScript enabled to view it.

In the event of transient disturbances, will result in a change of active power and reactive power. The magnitude of this change depends on the length of fault clearing time or in other words how quickly resolved disorders. In this study analyzed changes in active power and reactive power in the Bengkulu area network system by implementing a three-phase disturbance on the bus load 20kV of transformer unit 3 Sukamerindu which at the time of termination given simulated disturbance is set at 100 milliseconds, 250 milliseconds and 500 milliseconds which follow reference from the time of disconnection relay PLN by 0.2 seconds. 

From the simulation obtained the impact of disturbance affecting active power output of the generator, the Musi hydropower decrease active power is large enough, the three generator units ranging from 6-17 MW during the disruption, whereas the Tess hydropower decrease the output power of 0.44 MW. When fault terminated at 100 milliseconds interference shortly after the disruption, the entire main generator output power gradually rise to the condition prior to the disruption. While the reactive power experienced a considerable rise during the interruption occurs, but when the interruption resolved then the reactive power back to normal. 

Keywords: active power, fault clearing time, reactive power, transient disturbances

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