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Journal : Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII

DAMPAK SAMBARAN PETIR PADA MENARA TIANG BASE TRANSCEIVER STATION (BTS) Budi utama
Retii Prosiding Seminar Nasional ReTII ke-13 2018
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Makalah ini menganalisis sebaran potensial rata -rata yang terakumulasi di dalam metal struktur menara Base Trans ceiver Station (BTS) dan penyebaran tegangan langkah disekitar menara BTS pascasambaran petir di puncak menara BTS. Analisis menggambarkan magnitud tegangan rata rata yang melintasi koponen komponen antena yang diletak an disepanjang struktur menara dan pengaruh tahanan-jenis tanah yang berubah rubah terhadap musim kemarau dan hujan.. tegangan rata rata ini akan meningkat magnitudnya seiring dgn perjalanan gelombang tegangannya  menuju kaki menara. Pada selang waktu 0.45 mikro-detik pasacasambaran petir di puncak menara muncul penyebaran te gangan langkah dipermukaan tanah . . Hubungan antara amplitudo petir dan tegangan langkah digambarkan melalui kurva yang bersesuaian. Hasil studi simulasi ini sangat penting bagi negara seperti Indonesia dimana level presipita si/curah hujan (precipitation levels) umumnya tinggi disebagian kawasan di Indonesia dan dapat mengetahui mag nitud potesial rata rata di sepanjang struktur menara. Kata Kunci : Petir, Menara-BTS, Tegangan-langkah, Potensial rata-rata.
Dampak Tegangan Induksi Petir pada Tangki Penyimpanan Bahan Bakar Cair Flammable Budi utama
Retii Prosiding Seminar Nasional ReTII Ke-14 2019
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

ABSTRACT This paper analyses the induced voltage of the lightning that accumulated into the body of the fuel tank structure, moment after a lightning stroke hit the rod of lightning protection at the top of its protection tower. The protection mast and the lightning rod are 33 m and 6 m in heigh respectively. The Calculation of the induced voltage were simulated and carried out using Matlab software for finding the shape impulse wave and magnitude of the inducing voltage of the lightning that were accumulated in the tank structure. This analysis depicts that the lightning induction voltage varies with the distance between the lightning rod position and tank location, so that any changes in the induced voltage value are followed by changes the limitation of the minimum air gap in the tank.The results are very important to know the parameters that causes a fire and an incendive spark in the tank.
Modelling Mitigasi Kebencanaan Black Out pada Kasus Paparan (Exposure) Medan Listrik SUTET-500 kV Budi utama
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

ABSTRAK Makalah ini memberikan prosedur aplikasi untuk desain pemodelan mitigasi bencana black out akibat fenomena me dan tinggi disertai kegagalan insulation medium udara. Model kasus diambil pada kejadian kegagalan insulation udara pada saluran transmisi Tegangan Ekstra Tinggi 500 kV, pada rute Ungaran - Pemalang, pada rentang tower: T.434 - T.435, Dusun Malon, Desa Gunung-Pati, Kecamatan Gunung-Pati, Semarang Jawa Tengah.. Mitigasi dilakukan dengan menggunakan dua kawat tanah, di grounding dan direntangkan di bawah SUTET, posisinya masing-masing setinggi 7 meter dari permukaan tanah. Desain disimulasi menggunakan Matlab dengan menyelesai kan model persamaan elektrostatik yang dibentuk berdasarkan jumlah konduktor phasa, jumlah kawat tanah di dalam tiang konfigurasi datar (horizontal). Analisis paparan medan listrik dilakukan secara diskrit di permukaan tanah de ngan menghitung muatan listrik yang terkandung di dalam konduktor phasa dan kawat tanah dengan menggunakan Matriks Koeffisien Potensial Maxwell yg bersesuaian dgn jumlah konduktor phasa dan kawat tanah. Hasil analisis mendapatkan beberapa model mitigasi paparan intensitas medan listrik dengan angka di bawah angka kekuatan tembus listrik (breakdown) pada medium udara. Kata Kunci : Modelling, Mitigasi, Breakdown, Medan Listrik. ABSTRACT This paper provides an application procedure for the design of modelling of disaster of a black out mitigation caused by high field phenomena accompanied by a failure of the air insulation. Sample of the case was taken in the incident of air insulation failure at Extra High Voltage (UHV) of the transmission lines 500 kV, at route Ungaran - Pemalang, on the span of the towers : T.434 - T.435, Malon hamlet, Gunung-Pati village, Gunung-Pati district, Semarang central Java. The mitigation is carried out using two ground wires which were grounded and stretched under the UHV-transmission lines, positioned 6 meters above the ground respectively. The design is simulated using Matlab by solving an electrostatic equation model based on the number of phase conductors, the number of ground wires in a flat (horizontal) configuration tower. The analyses of electric field exposure is carried out discrete at ground level by calculating the electric charge contained in the phase conductor and ground wire using the Maxwell Potential Coefficient Matrix which corresponds to the number of phase conductors and ground wire. The results of the analyses obtained several mitigation models for exposure to electric field intensity with numbers below the breakdown strength in the air medium. Keyword : Modelling, Mitigation, Breakdown, Electric-Field
MODELLING MITIGASI PAPARAN (EXPOSURE) MEDAN LISTRIK MELALUI INOVASI PENGGUNAAN KISI-KISI KAWAT GROUNDING DAN TANAMAN RAMBAT BERBUNGA Budi utama
Retii 2021: Prosiding Seminar Nasional ReTII ke-16
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

ABSTRACT The reduction of the intensity of the electric field exposure under the Extra High Voltage Transmission Lines was carried out by modifying the Maxwell Potential Coefficient Matrix modelling at condition the "with and without" ground wire which was grounded and stretched parallel to the stretch of the phase conductor. The development through the innovation of this single ground wire into a grid, which was placed under the EHV Transmission Lines, reduced the exposure the intensity of the electric field under the EHV Transmission Lines. The modelling method carried out by solving the electrostatic equation for each phase conductor which also accompanied by a ground wire which was stretched under the EHV Transmission Lines with a certain height above the ground surface. The single grounding wire were formed into the gratings wire. The results of this innovation can be used for houses that located under the EHV Transmission Lines route where the top of the gratings wire can also be added with types of vines/flowering plants that can be increased aesthetic aspects. Keyword : Modelling, Mitigation, Electric-Field, Innovation.
Mitigasi Kebencanaan Sambaran Petir pada Kawasan Destinasi Pariwisata Embung Jokaton Budi Utama
Retii 2022: Prosiding Seminar Nasional ReTII ke-17
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

ABSTRACT This paper describes the design analyses of a lightning protection system for direct lightning stroke. The design was done on the contour of the land of small hills, with the distribution of several small hills that fill the surface space of the land. The location was determined based on the discourse of the community of Sengir hamlet, Kalirejo village, Kokap sub-district, Kulon Progo – Special District of Yogyakarta during a Real Work Lecture for students of the Yogyakarta National Institute of Technology, December 2021, with a letter of the village head.of Kalirejo number: 289/2004/XII/2021. The Rolling Sphare Method was carried out at several points of the installation of the lightning on the top of the triangle tower which having four levels/stages. The Model of design of the lightning protection system at Embung-Jokaton was obtained by using an electrogeometric model. The result of the design analyses for mitigating show that the zoning of protection were formed by a conicals space that cover the surface of the Embung Jokaton with magnitude of areas were 29 865 m2. and at the same time, the six arcs of shield of the lightning stroke was formed by the six lightning rods (splitzen) that located at the top of the triangle tower as apparatus for mitigating of disaster due to the lightning stroke in outdoor.. Keyword : Mitigation, disaster, Lightning