SKEMA PELEPASAN BEBAN MENGGUNAKAN METODE STATIC UNDER-FREQUENCY LOAD SHEDDING PADA SISTEM KELISTRIKAN PT. KRAKATAU DAYA LISTRIK
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
NURIANA, IRFAN
Senen, Adri
Senen, Adri
Subject
Teknik Elektro
Datestamp
2022-11-07 04:04:56
Abstract :
The unbalanced power between generation and load demands allows the power system stability to be disturbed. In this case, it is caused by generator outage condition which causes frequency decays below minimum allowable threshold and one way to overcome this in this thesis is by load shedding scheme. It is simulated at PT. Krakatau Daya Listrik electrical system using Static Under-Frequency Load Shedding method. It uses loads prioritization to be shed, in two scenarios, the essential loads are avoided from being shed at all costs. First scenario is the GI CLG Baru outage and the second is GI CLG Baru and GTG 2 outages. In each of these scenarios, the biggest system frequency decrease reaches 47,858 Hz and 44,811 Hz, so that overload 27,203% and 53,016% of the total load. After commencement of all Static UFLS steps, the results obtained in each of these scenarios, overload 8,31% and 3,963%, the biggest system frequency decrease reaches 49,007 Hz and 49,051 Hz, and steady state frequency 49,81 Hz and 49,951 Hz. In conclusion, Static UFLS is one of load shedding method that can be applied on this system in manual load shedding.
The unbalanced power between generation and load demands allows the power system stability to be disturbed. In this case, it is caused by generator outage condition which causes frequency decays below minimum allowable threshold and one way to overcome this in this thesis is by load shedding scheme. It is simulated at PT. Krakatau Daya Listrik electrical system using Static Under-Frequency Load Shedding method. It uses loads prioritization to be shed, in two scenarios, the essential loads are avoided from being shed at all costs. First scenario is the GI CLG Baru outage and the second is GI CLG Baru and GTG 2 outages. In each of these scenarios, the biggest system frequency decrease reaches 47,858 Hz and 44,811 Hz, so that overload 27,203% and 53,016% of the total load. After commencement of all Static UFLS steps, the results obtained in each of these scenarios, overload 8,31% and 3,963%, the biggest system frequency decrease reaches 49,007 Hz and 49,051 Hz, and steady state frequency 49,81 Hz and 49,951 Hz. In conclusion, Static UFLS is one of load shedding method that can be applied on this system in manual load shedding.
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