Winata, Arba Pandhu (2019) Desain Defense Scheme Sub Sistem Krian- Gresik 150 KV Tahun 2019. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Tahun 2019 merupakan tahun diselenggarakannya pesta politik terbesar di Indonesia, dimana Pilpres dan Pileg diselenggarakan dalam waktu yang bersamaan selama 24 jam. Artinya untuk memastikan Pilpres dan Pileg berjalan dengan baik, maka pasokan listrik harus benar- benar dijamin keberadaannya. Pada operasi harian, tepatnya saat beban puncak siang, Sub Sistem Krian- Gresik 150 KV, 67% daya disuplai dari IBT 500/150 KV Surabaya Barat 1, 2 dan IBT 500/150 KV Gresik Baru 1. Sehingga apabila ketiga IBT tersebut trip secara serentak, defense scheme existing tidak mampu mengatasi ketidakstabilan dan blackout total di dalam sub sistem tidak dapat dihindarkan. Maka dari itu, untuk mengatasi ketidakstabilan ini perlu dibentuk desain defense scheme yang benar dan diharapkan mampu mempertahankan kestabilan di dalam sub sistem pada saat Pemilu dan saat operasi sehari- hari. Defense scheme dilakukan dengan mengatur ulang pembebanan generator tetapi tetap mempertahankan Under Frequency Relay (UFR) pada titik- titik lokasi yang sama. Dari pembebanan generator yang baru dapat disimpulkan bahwa generator Gresik 150 KV harus berkontribusi dengan mensuplai 42-46% dari seluruh beban dalam sub sistem. Artinya suplai daya dari IBT menuju sub sistem akan berkurang menjadi 58-54%. Dengan komposisi suplai daya sedemikian rupa, respon frekuensi setelah terjadi trip IBT mampu kembali mendekati normal di nilai 50,13 Hz dan tegangan berhasil kembali ke level 0,98 pu.
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2019 is the year the largest political party is held in Indonesia, where presidential and legislative election is held at the same time for 24 hours. This means that to ensure that the presidential and legislative elections run well, electricity existence must be guaranteed. In the Krian-Gresik Sub-System 150 KV during the peak load, 67% of the power is supplied from IBT 500/150 KV Surabaya Barat 1, 2 and IBT 500/150 KV Gresik Baru 1. So that if the three IBT trip simultaneously, the defense of the existing scheme is unable to overcome instability and total blackout in the sub-system cannot be avoided. Therefore, to overcome this instability it is necessary to establish a correct defense scheme and are expected to be able to maintain stability in the sub-system. Defense scheme is done by rearranging the generator load but still maintaining Under Frequency Relay (UFR) at the same location. From the new generator load, it can be concluded that the 150 KV Gresik generator must contribute by supplying 42-46% of all loads in the sub-system. This means that the power supplied from IBT to the sub-system will decrease to 58-54%. With that composition, the frequency response after IBT trip is able to return to normal at a value of 50.13 Hz and the voltage manages
to return to the level of 0.98 pu.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSE 621.319 21 Win d-1 2019 |
| Uncontrolled Keywords: | Kestabilan Transien, Defense Scheme, Under Frequency Load Shedding, Operasi Island |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive. |
| Divisions: | Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Winata Arba Pandhu |
| Date Deposited: | 04 Jan 2023 04:33 |
| Last Modified: | 04 Jan 2023 04:33 |
| URI: | http://repository.its.ac.id/id/eprint/63432 |
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