Analisis Sistem Proteksi Petir Internal Gedung Pembangkit Pada Pt Geo Dipa Energi Unit 1 Dieng

Firmansyah, Afrizal Pradana (2022) Analisis Sistem Proteksi Petir Internal Gedung Pembangkit Pada Pt Geo Dipa Energi Unit 1 Dieng. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem pentanahan pada sebuah bangunan merupakan hal terpenting dalam sistem proteksi petir internal. Sistem pentanahan yang baik memiliki resistansi maksimal 10 Ω, agar pembuangan arus petir mengalir secara sempurna ke dalam tanah dan tidak terjadi fenomena GPR. Sebuah rangkaian sistem pentanahan untuk peralatan terutama dalam area pembangkit tenaga listrik, dapat dikatakan mampu menahan kenaikan tegangan akibat sambaran petir tidak langsung jika kenaikan tegangan yang terjadi masih dalam ambang batas standar BIL, yaitu dibawah 6 kV. Maka dalam tugas akhir ini akan dilakukan analisis sistem proteksi petir internal melalui rangkaian sistem pentanahan area Power Plant PT Geo Dipa Energi Unit 1 Dieng berdasarkan 3 metode, yaitu metode rangkaian eksisting, rangkaian ekipotensial, dan rangkaian SPD dengan beberapa pengujian input arus petir hingga 100 kA. Pada simulasi rangkaian eksisting, dilakukan simulasi sambaran petir di 2 titik lokasi, yaitu di tiang penangkal petir area workshop dan area V-101. Untuk lokasi tiang, hasil kenaikan tegangan pada rangkaian sistem hingga penyebarannya telah sesuai standar. Sedangkan untuk lokasi V-101, hasil kenaikan tegangan pada rangkaian sistem jauh lebih besar dari lokasi tiang dan rata-rata melebihi standar hingga mencapai titik tertinggi diatas 1500 kV. Sehingga peralatan yang terdapat pada area-area tertentu berpotensi mengalami kerusakan. Kemudian dilakukan simulasi rekonfigurasi rangkaian sistem berdasarkan metode ekipotensial. Hasil kenaikan tegangan pada rangkaian ini telah berkurang hingga 81,4% dari rangkaian eksisting, namun masih terdapat hasil diatas standar pada area tertentu. Setelah itu, dilakukan simulasi perancangan sistem SPD pada rangkaian ekipotensial menggunakan komponen MOV type 92. Secara keseluruhan pada rangkaian ini telah menghasilkan kenaikan tegangan dibawah standar dan telah berkurang hingga 87,4% dari rangkaian ekipotensial. Sehingga rangkaian dengan sistem SPD ini mampu menahan kenaikan tegangan yang berlebihan akibat petir.
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The grounding system in a building is the most crucial thing in an internal lightning protection system. A good grounding system has a maximum resistance of 10 Ω, so that the discharge of lightning current flows perfectly into the ground and there is no GPR phenomenon. A circuit of grounding systems for equipment, especially in the power plant area, can be said to be able to withstand voltage increases due to indirect lightning strikes if the voltage increase that occurs is still within the BIL standard threshold, which is below 6 kV. So, in this final project, an analysis of the internal lightning protection system will be carried out through a circuit of grounding systems in the Power Plant area of PT Geo Dipa Energi Unit 1 Dieng based on 3 methods, namely the existing circuit method, equipotential circuit, and SPD circuit with several lightning current input tests up to 100 kA. In the simulation of the existing circuit, lightning strike simulations were carried out at 2 location points, namely the lightning rod in the workshop area and the V-101 area. For the location of the lightning rod, the results of the voltage increase in the system circuit until its distribution is in accordance with the standard. As for the V-101 location, the results of the voltage increase in the system circuit are much larger than the lightning rod location and the average exceeds the standard until it reaches the highest point above 1500 kV. So, the equipment contained in certain areas has the potential to be damaged. Then, the simulation of reconfiguration of the system circuit is carried out based on the equipotential method. The result of the voltage increase in this circuit has been reduced to 81.4% of the existing circuit, but there are still results above the standard in certain areas. After that, a simulation of the SPD system design was carried out in the equipotential circuit using the MOV type 92 component. Overall, this circuit has resulted in a below standard voltage increase and has been reduced to 87.4% of the equipotential circuit. So, the circuit with the SPD system can withstand excessive voltage increases due to lightning.

Item Type:	Thesis (Other)
Additional Information:	RSE 621.317 Fir a-1 2022
Uncontrolled Keywords:	Proteksi Petir Internal. GPR. Eksisting. Ekipotensial. SPD. Kenaikan Tegangan. Lightning Protection System. GPR. Existing. Equipotential. SPD. Voltage Increases.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	12 Jun 2026 01:36
Last Modified:	12 Jun 2026 01:36
URI:	http://repository.its.ac.id/id/eprint/133748

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