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Yulita Arni Priastiwi
Departemen Teknik Sipil Jl. Prof.Soedarto SH Tembalang Semarang. 50275
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Transportation

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Evaluasi Penggunaan Neutral Grounding Reactor (NGR) Pada Shunt Reactor GITET Indramayu Pratomo, Shendy Eko; Priastiwi, Yulita Arni; Widayat, Widayat
Jurnal Profesi Insinyur Indonesia Vol 3, No 1 (2025): JPII
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpii.2025.25705

Abstract

Dengan adanya kebutuhan untuk menghubungkan jalur transmisi PT PLN (Persero) PLTU Indramayu dengan PLTU Tanjung Jati Jawa Tengah, maka PLN (Persero) membangun Gardu Induk Tegangan Ekstra Tinggi (GITET) 500 kV. Untuk menyalurkan dan memperkuat pendistribusian daya listrik dari generator pembangkit kepada pelanggan, PT PLN (Persero) PUSLITBANG telah melakukan kajian penggunaan shunt reactor pada GITET 500 kV PLTU Indramayu. Dikarenakan lokasi GITET 500 kV PLTU Indramayu yang berdekatan dengan PLTU Indramayu, maka dibutuhkan evaluasi penggunaan sistem pentanahan yang baik untuk mengakomodir dan mengantisipasi arus hubung singkat pada sistem gardu induk, terutama pada shunt reactor. Penelitian ini bertujuan untuk mengevaluasi penggunaan Neutral Grounding Reactor (NGR) dengan metode pengumpulan data penunjang, orientasi lapangan ke beberapa unit GITET 500kV yang menggunakan NGR dan melakukan design review sesuai dengan adanya surat PT PLN (Persero) UIP JBT I kepada PT PLN Enjiniring No. 1763/KON.02.03/480000/2019 tanggal 2 Desember 2019 tentang permintaan Evaluasi dan Rekomendasi Penyesuaian Lingkup GITET 500 kV PLTU Indramayu pada pekerjaan Design Review, QA/QC GITET 500/150kV PLTU Indramayu pada Perjanjian No. 0145.PJ/DAN.02.02/UIP JBT II/2018 tanggal 13 Desember 2018 antara PT PLN (Persero) UIP Jawa Bagian Tengah II dan PT CG Power System Indonesia. Hasil evaluasi menunjukkan bahwa penggunaan sistem grounding pada sistem shunt reactor dan juga sistem yang terhubung langsung dengan pembangkit sangat penting menggunakan Neutral Grounding Reactor (NGR) untuk menanggulangi arus hubung singkat dan gangguan overvoltage. Kata kunci: shunt reactor, neutral grounding reactor (NGR)
RESISTANCE OF MORTAR WITH PPC CEMENT AND GEOPOLYMER MORTAR WITH WHITE SOIL SUBSTITUTION IN H2SO4 IMMERSION Priastiwi, Yulita Arni; Hidayat, Arif; Tamrin, Rinaldo; Sendrika, Difa Bagus
ASTONJADRO Vol. 10 No. 2 (2021): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v10i2.4579

Abstract

This study analyzes the effect of immersion of H2SO4 (sulfuric acid) solution with a concentration of 10% on porosity, density and compressive strength of mortar with PPC cement and geopolymer with white soil substitution mortar. The purpose of this study was to determine the resistance of mortar with PPC cement and geopolymer with white soil substitution mortar when immersed in 10% H2SO4 solution. The test object was 5x5x5 cm mortar with materials used including fly ash from PLTU Tanjung Jati B Jepara, white soil from Kupang, fine aggregate, water and alkaline activator in the form of a mixture of 8M NaOH and Na2SiO3 and also PPC cement. The composition of the geopolymer mortar mixture is 1binder: 3Fine Aggregate: 0,5Water-Binder Ratio, while the mortar with PPC cement is made with a composition of 1PPC: 3Fine Aggregate: 0,5Water-Cement Ratio. The geopolymer mortar was made in 6 variations with a white soil substitution percentage of 0-25% with an increase of 5% for each variation. Compressive strength testing using a compression test apparatus. The test results show that the variation in the percentage of white soil substitution has less effect on the size of the porosity value. As for the value of compressive strength and density, white soil substitution has an effect, the higher the white soil substitution, the higher the compressive strength and mortar density values. Geopolymer mortar was better to withstand 10% sulfuric acid solution, while mortar with PPC cement had no resistance to 10% sulfuric acid solution because it continued to deteriorate over the course of the day. The greatest compressive strength is in variation IV (15% white soil substitution) of 15,31 MPa at 28 days of age, while the smallest porosity and greatest density are in variation VI (25% white soil substitution) of 0,17% and 2,205 grams/cm3.
Co-Authors . Widayat Abi Nabil Hanif Adi Putra, Kukuh Cahya Andi Retno Ari Setiaji Andreanto, Stefanus Kristian Anik Sarminingsih, Anik Arif Hidayat Arif Hidayat Arif Hidayat Badru, Zidny Salamsyah Bagas Indra Cahyo Bambang Pardoyo Bima Bima Blinka Hernawan Prasetya Christhy Amalia Sapulete, Christhy Amalia Daryanto, Dwi Dina Daniaty Edo Antonio Enda Suranta Sitepu Erika Yulianti Gardha Satria Fadillah Gilbert Fernando Han Ay Lie Hardi Wibowo Himawan Indarto Himawan Indarto Husna, Khotimatul Ifan Hasnan Taufiqur Rohman Ilham Nurhuda Ilham Nurhuda Inandhiya Ayu Ulayya Iswandi Imran Kamila Shaomi Nazila Kenny Ghalib M. Lutfi Moh Nur Sholeh Mona Dwi Anggraeni Muhammad Akhis Thoyfurrohman Muhammad Rizkivano Akbar Muhrozi Muhrozi Muhrozi Muhrozi Nauval Rabbani Nensi Carita Nisa Luthfiana Nugraha Eka Saputra Nuroji Nuroji Nuroji Nuroji Pratomo, Shendy Eko Purwanto Purwanto Purwanto Purwanto Purwanto Purwanto Putriagsari, Farah Naurah Ratna Purwaningsih Rizki Amalia Putri Rudi Yuniarto Adi Samuel Parluhutan Sekarningtyas, Nazifa Sendrika, Difa Bagus Setiadi, Muhammad Irfan Silviana Silviana Sri Prabandiyani Retno Wardani Sri Prabandiyani Retno Wardani Sri Prabandiyani Retno Wardani Sri Tudjono Sukamta Sukamta Tamrin, Rinaldo Undayani Cita Sari Undayani Cita Sari Vicky Ramadhani, Vicky Windu Partono Windu Partono Yohanes Agung Nugroho Zainuddin Zainuddin