Pengaruh Jenis Kontaminan Pada Isolator Keramik Terhadap Karakteristik Surface Discharge

Pratama, Bagus Ardita (2022) Pengaruh Jenis Kontaminan Pada Isolator Keramik Terhadap Karakteristik Surface Discharge. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 07111840000095-Undergraduate_Thesis.pdf Restricted to Repository staff only Download (5MB)

Abstract

Komponen isolator berfungsi untuk mengisolir suatu konduktor bertegangan dengan kerangka penyangga yang dikembumikan sehingga tidak ada arus listrik mengalir dari konduktor tersebut ke tanah. Berbagai jenis bahan untuk isolator telah dikembangkan. Salah satunya adalah isolator dengan bahan keramik atau porselen. Isolator keramik memiliki kelebihan diantaranya kekuatan mekanik yang cukup handal. Namun kekurangan isolator jenis ini adalah sifat permukaannya yang hidrofilik, yaitu mudah menyerap air sehingga bila digunakan pada daerah dengan kelembaban tinggi cenderung menyebabkan timbulnya arus bocor. Pada studi ini akan dilakukan simulasi dan pengujian pengaruh kontaminan garam, fly ash, dan alga terhadap karakteristik medan listrik dan arus bocor pada permukaan isolator keramik. Metode yang digunakan adalah dengan menggunakan software berbasis FEM (Finite Element Method). Sebelum simulasi dilakukan, isolator dimodelkan dua dimensi dan tiga dimensi. Kemudian model isolator keramik akan dimasukan ke software simulasi berbasis FEM (Finite Element Method) untuk dianalisis nilai karakteristik surface discharge Isolator keramik yang disimulasikan diberikan kontaminan garam, fly ash, dan alga yang divariasikan berdasarkan nilai electrical conductivity. Kemudian, kondisi isolator dalam keadaan tanpa kontaminan dan keadaan dengan kontaminan garam, fly ash, dan alga akan dibandingkan. Pengujian dilakukan untuk menganalisis karakteristik surface discharge pada permukaan isolator akibat pengaruh kontaminan dengan memvariasikan nilai ESDD maupun NSDD kontaminan pada permukaan isolator keramik. Nilai ESDD, yaitu $0,0522~mg/cm^{2}$ (Ringan), $0,1039~mg/cm^{2}$ (Sedang), $0,2337~mg/cm^{2}$ (Berat), dan $0,5197~mg/cm^{2}$ (Sangat Berat). Nilai NSDD, yaitu NSDD yaitu $0,0598mg/cm^{2}$ (Ringan), $0,1975~mg/cm^{2}$ (Sedang), $0,5717~mg/cm^{2}$ (Berat), dan $1,2993~mg/cm^{2}$ (Sangat Berat). Hasil pengujian isolator keramik pada tegangan 30 kV menujukkan arus bocor isolator tanpa kontaminan sebesar 0,152566 mA, isolator dengan kontaminan garam ESDD $0,0522~mg/cm^{2}$ sebesar 0,182396 mA, isolator dengan kontaminan fly ash $0.0598~mg/cm$ sebesar 0,241492 mA, isolator dengan kontaminan alga minggu 1 0,202704 mA. Hasil menunjukkan bahwa semakin tinggi level NSDD dan level ESDD dari kontaminan garam dan fly ash maka semakin tinggi juga arus nilai arus bocor. Hasil simulasi arus bocor dapat merepresentasikan hasil pengujian arus bocor.
==============================================================================================================================
The insulator component serves to isolate a voltage conductor with an impounded support frame so that no electric current flows from the conductor to the ground. Different types of materials for insulators have been developed. One of them is an insulator with ceramic or porcelain materials. Ceramic insulators have advantages including reliable mechanical strength. However, the disadvantage of this type of insulator is its hydrophilic surface properties, which are easy to absorb water so that when used in areas with high humidity it tends to cause leakage currents. In this study, simulation and testing of the influence of salt, fly ash, and algae contaminants will be carried out on the characteristics of electric fields and leakage currents on the surface of ceramic insulators. The method used is software based on FEM (Finite Element Method). Before the simulation is carried out, the insulator is modeled two-dimensional and three-dimensional. Then the ceramic insulator model will be entered into FEM (Finite Element Method) based simulation software to analyze the characteristic value of surface discharge The simulated ceramic insulator is given salt, fly ash, and algae contaminants which are varied based on electrical conductivity values. Then, the condition of the insulator in a state without contaminants and the state with salt, fly ash, and algae will be compared. Testing was carried out to analyze the characteristics of surface discharge on the insulator surface due to the influence of contaminants by varying the ESDD and NSDD values of contaminants on the surface of ceramic insulators. Esdd values, namely $0.0522~mg/cm^{2}(Light)$ $0.1039~mg/cm^{2}$ (Medium), $0.2337~mg/cm^{2}$ (Weight), and $0.5197~mg/cm^{2}$ (Very Heavy). Nsdd values, namely NSDD, are $0.0598mg/cm^{2}$ (Light), $0.1975~mg/cm^{2}$ (Medium), $0.5717~mg/cm^{2}$ (Weight), and $1.2993~mg/cm^{2}$ (Very Heavy). The test results of ceramic insulators at a voltage of 30 kV showed a leakage current of insulators without contaminants of 0.152566 mA, insulators with ESDD salt contaminants of $0.0522~mg/cm^{2}$ of 0.182396 mA, insulators with fly ash contaminants of $0.0598~mg/cm$ of 0.241492 mA, insulators with algae contaminants week 1 0.202704 mA. The results show that the higher the NSDD level and ESDD level of salt and fly ash contaminants, the higher the leakage current value. Leakage current simulation results can represent the results of leakage current testing.

Item Type:	Thesis (Other)
Additional Information:	RSE 621.319 37 Pra p-1 2022
Uncontrolled Keywords:	Isolator Keramik. Karakteristik Surface Discharge. Kontaminan Alga. Kontaminan Fly Ash. Kontaminan Garam.
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 04:39
Last Modified:	12 Jun 2026 04:39
URI:	http://repository.its.ac.id/id/eprint/133770

Actions (login required)

View Item