Pengaruh Jenis Kontaminan Pada Isolator Polimer Terhadap Karakteristik Surface Discharge

Syahril, Reynaldi (2022) Pengaruh Jenis Kontaminan Pada Isolator Polimer Terhadap Karakteristik Surface Discharge. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Isolator polimer memiliki keunggulan diantaranya adalah massa jenis lebih ringan, sifat dielektrik yang baik, dan memiliki sifat kedap air (hydrophobic). Meski memiliki sifat kedap air, isolator polimer tidak sepenuhnya imun dalam menghadapi gangguan akibat polusi seperti air hujan, debu, fly ash, dan kontaminan lain yang menempel. Kontaminan tersebut dapat mempengaruhi kekuatan dielektrik isolator polimer dan dapat menimbulkan surface discharge. Pada tugas akhir ini dilakukan simulasi dan pengujian pengaruh kontaminan garam, fly ash, dan alga terhadap karakteristik surface discharge pada permukaan isolator polimer. Sebelum simulasi dilakukan, isolator dimodelkan dua dimensi dan tiga dimensi dengan software desain grafis. Kemudian, model isolator tersebut akan dimasukan ke software simulasi berbasis FEM (Finite Element Method) untuk dianalisis karakteristik surface discharge isolator polimer. Isolator polimer yang disimulasikan diberikan kontaminan garam, fly ash, dan alga yang divariasikan berdasarkan nilai electrical conductivity. Pengujian dilakukan untuk menganalisis karakteristik surface discharge pada permukaan isolator polimer akibat pengaruh kontaminan dengan memvariasikan nilai ESDD maupun NSDD kontaminan pada permukaan isolator. Selanjutnya, kondisi isolator dalam keadaan tanpa kontaminan dan keadaan dengan kontaminan garam, fly ash, dan garam akan dibandingkan. Hasil simulasi menunjukkan bahwa kontaminan tidak memberikan dampak yang signifikan terhadap perubahan distribusi potensial listrik namun memberikan perubahan terhadap medan listrik dan arus bocor. Nilai medan listrik isolator polimer tanpa kontaminan sebesar 1,3070 × 106 V/m, sedangkan nilai medan listrik kontaminan fly ash sebesar 2,6549 × 106 V/m, kontaminan garam sebesar 2,6442 × 106 V/m, kontaminan alga sebesar 2,6420 × 106 V/m. Semakin tinggi nilai konduktivitas listrik kontaminan mengakibatkan meningkatnya arus bocor isolator. Pada tegangan 30 kV, nilai arus bocor isolator tanpa kontaminan sebesar 0,11796 mA, sedangkan kontaminan alga sebesar 0,14220 mA, kontaminan garam dengan ESDD sangat berat sebesar 0,13749 mA, dan kontaminan fly ash dengan NSDD sangat berat sebesar 0,13496 mA. Semakin tinggi ESDD dan NSDD kontaminan, semakin tinggi arus bocor yang terukur. Hasil dari simulasi arus bocor dapat merepresentasikan hasil pengujian arus bocor.
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Polymer insulators have advantages such as lighter density, good dielectric properties, and hydrophobic. Despite having water-resistant properties, polymer insulators are not fully immune in the face of disturbances caused by pollution such as rainwater, dust, fly ash, and other contaminants attached. These contaminants can affect the dielectric strength of the polymer insulator and can cause surface discharge. In this final project, simulation and testing of the effects of salt, fly ash, and algae contaminants carried out on the surface discharge of the polymer insulator surface. Before the simulation is carried out, the insulator is modeled in two dimensions and three dimensions with graphic design software. Then, the insulator model will be entered into a simulation software based on FEM (Finite Element Method) to analyze the surface discharge polymer insulator. The simulated polymer insulator was given salt, fly ash, and algae contaminants which were varied based on the electrical conductivity. The test was conducted to analyze the characteristics of the surface discharge on the surface of the polymer insulator due to the influence of contaminants by varying the ESDD and NSDD values of the contaminants on the insulator surface. Furthermore, the condition of the insulator in the state without contaminants and the state with salt, fly ash, and salt contaminants will be compared. The simulation results show that the contaminants do not have a significant impact on changes in the distribution of electric potential but do change the electric field and leakage current. The electric field value of the polymer insulator without contaminants is 1.3070 × 106V/m, while the electric field value of the fly ash is 2.6549 × 106V/m, salt contaminants 2.6442 × 106V/m, and algae contaminants 2.6420 × 106V/m. The higher the value of the electrical conductivity of the contaminants, the higher the leakage current of the insulator. At a voltage of 30 kV, the value of the insulator leakage current without contaminants is 0.11796 mA, while the algae contaminants are 0.14220 mA, salt contaminants with very heavy ESDD are 0.13749 mA, and fly ash with very heavy NSDD are 0.13496 mA. The higher the ESDD and NSDD of the contaminant, the higher the rated leakage current. The results of the leakage current simulation can represent the leakage current test results.

Item Type:	Thesis (Other)
Additional Information:	RSE 621.319 37 Sya p-1 2022
Uncontrolled Keywords:	Isolator Polimer, Kontaminan Garam, Kontaminan Fly Ash, Kontaminan Alga, Karakteristik Surface Discharge, Polymer Insulators, Salt Contaminants, Fly Ash Contaminants, Algal Contaminants, Surface Discharge Characteristics
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN295 Fly ash T Technology > TP Chemical technology > TP1140 Polymers
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Anis Wulandari
Date Deposited:	03 Jun 2024 02:22
Last Modified:	03 Jun 2024 02:22
URI:	http://repository.its.ac.id/id/eprint/107998

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