Pengaruh Kontaminan Garam pada Permukaan Isolator Pin Berbahan Polimer Terhadap Distribusi Medan Listrik Berbasis Finite Element Method (FEM)

Wardani, Mira Kusuma (2021) Pengaruh Kontaminan Garam pada Permukaan Isolator Pin Berbahan Polimer Terhadap Distribusi Medan Listrik Berbasis Finite Element Method (FEM). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Polimer merupakan bahan isolator yang mulai banyak digunakan beberapa tahun terakhir untuk menggantikan gelas dan porselin karena memiliki banyak kelebihan dibanding kedua bahan tersebut. Antara lain memiliki massa jenis yang lebih ringan, sifat dielektrik dan termal yang lebih baik serta memiliki sifat kedap air atau hydrophobic. Adanya kontaminan atau polutan pada permukaan isolator akan menyebabkan penurunan kemampuan dielektrik dan dapat mengakibatkan arus bocor. Pada penelitian ini dilakukan simulasi terkait pengaruh kontaminan garam terhadap distribusi medan listrik dan kerapatan arus isolator. Simulasi dijalankan dengan metode Finite Element Method (FEM). Selain itu dilakukan juga pengujian arus bocor menggunakan pembangkit tegangan tinggi AC pada empat level tegangan berbeda dengan nilai ESDD (Equivalent Salt Density Deposit) yang bervariasi. Pengujian arus bocor dilakukan pada dua keadaan yaitu isolator kering dan isolator basah. Berdasarkan hasil penelitian, adanya lapisan kontaminan maka nilai medan dan nilai kerapatan arus permukaan akan semakin meningkat. Nilai ESDD kontaminan garam mempengaruhi nilai arus bocor yang mengalir, baik pada simulasi dan pengujian semakin tinggi nilai ESDD maka nilai arus bocor juga akan semakin tinggi. Selain itu isolator dalam keadaan basah mempunyai nilai arus bocor yang lebih tinggi dari pada isolator dalam keadaan kering.
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Polymer is an insulating material that has been widely used in recent years to replace glass and porcelain because it has many advantages over the two materials. Among others, it has a lighter density, better dielectric and thermal properties and has water-resistant or hydrophobic properties. The presence of contaminants or pollutants on the surface of the insulator will cause a decrease in the dielectric ability and can result in leakage current. In this study, simulations were carried out regarding the effect of salt contaminants on the distribution of the electric field and the current density of the insulator. The simulation was run using the Finite Element Method (FEM). In addition, leakage current testing was also carried out using an AC high voltage generator at four different voltage levels with varying ESDD (Equivalent Salt Density Deposit) values. Leakage current testing is carried out in two conditions, such as dry insulator and wet insulator. Based on the results of the study, the presence of a contaminant layer will increase the field value and surface current density value. The ESDD value of salt contaminants affects the value of the flowing leakage current, both in simulation and testing, the higher the ESDD value, the higher the leakage current value. In addition, the insulator in the wet condition has a higher leakage current value than the insulator in the dry condition.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Arus Bocor, Distribusi Medan, ESDD, FEM, Isolator Polimer ========================================================== Leakage Current, Field Distribution, , ESDD, FEM, Polymer Insulator
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3401 Insulation and insulating materials
Divisions:	Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Mira Kusuma Wardani
Date Deposited:	13 Aug 2021 23:59
Last Modified:	14 Aug 2021 00:04
URI:	http://repository.its.ac.id/id/eprint/86485

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