Analisa Undervoltage Load Shedding Pada Sistem Jawa-Bali 500 Kv Untuk Mencegah Voltage Collapse

Zakaria, Rachmad Ady (2017) Analisa Undervoltage Load Shedding Pada Sistem Jawa-Bali 500 Kv Untuk Mencegah Voltage Collapse. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Salah satu indikasi sistem mengalami ketidakstabilan yaitu terjadinya underfrequency dan undervoltage. Salah satu metode yang paling ekonomis untuk mencegah voltage collapse dalam skala yang besar adalah Undervoltage Load Shedding (UVLS). Pelepasan beban dilakukan sebagai usaha memperbaiki kestabilan sistem yang terganggu karena beban lebih. Salah satu komponen stabilitas sistem yang mampu menjadi referensi pelepasan beban adalah tegangan. Pelepasan beban diharapkan dapat memulihkan tegangan dengan cepat dan jumlah beban yang dilepaskan seminimal mungkin. Demi mendapatkan kinerja sistem yang baik dengan tegangan sistem yang selalu stabil dengan ketentuan variasi tegangan pelayanan dimana drop tegangan yang diijinkan hanya sebesar ±5%. Simulasi pelepasan beban dilakukan pada bus yang memiliki nilai sensitivitas (VQ Sensitivity) tertinggi. Setelah melakukan simulasi maka di dapatkan rangking sensitivitas bus yang digunakan sebagai acuan urutan pelepasan beban. Semakin besar nilai sensitivitas dianggap sebagai bus terlemah, maka pada bus tersebut akan dilakukan pelepasan beban. Jumlah beban yang dilepas pada pelepasan beban yang dilakukan berdasarkan UVLS Guideline dengan pelepasan beban sebesar 5% dari total beban yang tersambung didalam sistem dalam setiap tahapannya, Semakin banyak jumlah beban (MW) yang dilepas, maka semakin baik pula kondisi tegangan sistem. Load Shedding berdasarkan kondisi bus undervoltage dan metode bensitivitas bus dapat mencegah terjadinya voltage collapse pada sistem Jawa-Bali 500 kV. ================================================================================================ One indication of the system instability that is the occurrence of under frequency and under voltage. One of the most economical methods to prevent large-scale voltage collapse is Undervoltage Load Shedding (UVLS). Load shedding is an effort to improve the stability of the system is disrupted due to overload. One component of system stability that can be a reference to the release of the load is voltage. The release of the load is expected to recover the voltage quickly and the amount of load that is released to a minimum. In order to get a good system performance with system voltage is always stable with the provision of voltage service variation where the allowable voltage drop is only ± 5%. Load shedding simulation is performed on the bus with the highest sensitivity (VQ Sensitivity). After doing the simulation then get the rank of the sensitivity of the bus that is used as the reference of the load release sequence. The greater the sensitivity value is considered as the weakest bus, then on the bus will be the release of the load. The amount of load to release at the load shedding under the UVLS Guideline with a load release of 5% of the total load connected in the system, The greater the amount of load (MW) released, the better the system voltage condition. Load Shedding based on under voltage bus conditions and bus sensitivity can prevent the occurrence of voltage collapse in Java-Bali system 500 kV.

Item Type: Thesis (Undergraduate)
Additional Information: RSE 621.374 3 Zak a-1
Uncontrolled Keywords: Undervoltage, pelepasan beban, sensitivitas bus, Sistem Jawa-Bali 500 kV
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3226 Transients (Electricity). Electric power systems. Harmonics (Electric waves).
Divisions: Faculty of Industrial Technology > Electrical Engineering > (S1) Undergraduate Theses
Depositing User: Rachmad Ady Zakaria
Date Deposited: 16 Nov 2017 08:10
Last Modified: 06 Mar 2019 03:04
URI: http://repository.its.ac.id/id/eprint/43736

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