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All Journal JTEV (Jurnal Teknik Elektro dan Vokasional Jurnal Rekayasa elektrika
Gunawan Gunawan
Universitas Islam Sultan Agung Semarang
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Social Sciences

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Analisa Kelayakan Pentanahan Tower Saluran Udara Tegangan Tinggi (SUTT) 150kV Jelok – Bringin Menggunakan Metode Komparasi Dedi Pranatali; Gunawan Gunawan; Dedi Nugroho
JTEV (Jurnal Teknik Elektro dan Vokasional) Vol 8, No 2 (2022): JTEV (Jurnal Teknik Elektro dan Vokasional)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (847.794 KB) | DOI: 10.24036/jtev.v8i2.114321

Abstract

Saluran Udara Tegangan Tinggi (SUTT) 150 kV Jelok – Bringin adalah salah satu penghantar di wilayah kerja PT PLN (Persero) Unit Pelaksana Transmisi Salatiga, penghantar ini menghubungkan dua Sub Sistem Utama yaitu Sub Sistem Ungaran dengan Sub Sistem Pedan. Sesuai dengan Buku Petir PLN Tahun 2020 tercatat sebanyak 722 kejadian petir selama tahun 2019 pada penghantar tersebut.Sebagai upaya mengurangi resiko akibat petir perlu memastikan sistem proteksi bekerja dengan baik. Obyek proteksi adalah tower SUTT 150kV dengan sistem pentanahan yang layak. Penelitian ini menelusur data menggunakan metode komparasi yaitu membandingkan antara hasil pengukuran di lapangan dengan nilai standar pengukuran yang digunakan. Informasi mengenai kelayakan perlu selalu terbarui yang didukung hasil pengukuran yang tepat dan akurat secara konsisten. Kondisi ground rod, kondisi tanah dan kondisi kontak antara ground rod dengan penghantar pentanahan merupakan variabel yang mempengaruhi hasil dari pengukuran pentanahan. Penambahan sebuah elektoda batang dengan panjang 6 meter dapat memperbaiki nilai tahanan pentanahan sebesar 3,5287 Ohm yang berarti memenuhi persyaratan (<10 Ohm-standar SK DIR PLN No. 0520-1.K/DIR/2014). Dari hasil pengukuran 23 unit tower dari 24 unit tower atau  95,83% dari total tower, karakteristik hasil pengukurannya masih relatif dalam kondisi layak yaitu dibawah 10 Ohm.
Desain Pembangkit Listrik Tenaga Mikrohidro di Air Terjun Kedung Kayang Dedi Nugroho; Agus Suprajitno; Gunawan Gunawan
Jurnal Rekayasa Elektrika Vol 13, No 3 (2017)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5011.831 KB) | DOI: 10.17529/jre.v13i3.8554

Abstract

Kedung Kayang waterfall is located on the border of  Magelang and Boyolali regency of Central Java.  The waterfall is 38 meters high, so it has the potential to be used as a micro hydro power plant (MHP). In designing the MHP, it requires some studies including hydrology, civil, mechanical, and electrical. The purpose of this research is to predict the water discharge, determine the potential of hydro power, selection of MHP sites, design of hydro turbine and electric generator. This research uses Penman Modification method to calculate evapotranspiration, Mock method to calculate water discharge, geographical mapping for MHP sites selection and cross-flow turbine design calculation. This paper presents the results of MHP design consist of MHP capacity, selection of MHP sites, penstock design, cross-flow turbine design and electric generator selection.   The  result showed that  dependable water discharge is 0.143 m3 / sec, effective head is 19.5 meters, hydro potential is 27.33 kW, and electric power that can be produced is 18 kW, length and diameter penstock are 81,74 m and 26,77 m, hydro turbine used cross flow type with outer diameter of the runner is 17,17 cm,  inner diameter is 11,45 cm and width is 59,16 cm. MHP site is located in Klakah village,  Selo Sub-district, Boyolali District.  
Desain Pembangkit Listrik Tenaga Mikrohidro di Air Terjun Kedung Kayang Dedi Nugroho; Agus Suprajitno; Gunawan Gunawan
Jurnal Rekayasa Elektrika Vol 13, No 3 (2017)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v13i3.8554

Abstract

Kedung Kayang waterfall is located on the border of  Magelang and Boyolali regency of Central Java.  The waterfall is 38 meters high, so it has the potential to be used as a micro hydro power plant (MHP). In designing the MHP, it requires some studies including hydrology, civil, mechanical, and electrical. The purpose of this research is to predict the water discharge, determine the potential of hydro power, selection of MHP sites, design of hydro turbine and electric generator. This research uses Penman Modification method to calculate evapotranspiration, Mock method to calculate water discharge, geographical mapping for MHP sites selection and cross-flow turbine design calculation. This paper presents the results of MHP design consist of MHP capacity, selection of MHP sites, penstock design, cross-flow turbine design and electric generator selection.   The  result showed that  dependable water discharge is 0.143 m3 / sec, effective head is 19.5 meters, hydro potential is 27.33 kW, and electric power that can be produced is 18 kW, length and diameter penstock are 81,74 m and 26,77 m, hydro turbine used cross flow type with outer diameter of the runner is 17,17 cm,  inner diameter is 11,45 cm and width is 59,16 cm. MHP site is located in Klakah village,  Selo Sub-district, Boyolali District.  
Co-Authors Agus Suprajitno Dedi Nugroho Dedi Nugroho Dedi Pranatali