Analisis Akselerasi Umur Isolator Polimer 20 kV Akibat Pengaruh Kontaminan Berdasarkan Pengukuran Arus Bocor

Kusumaningrum, Anisa (2017) Analisis Akselerasi Umur Isolator Polimer 20 kV Akibat Pengaruh Kontaminan Berdasarkan Pengukuran Arus Bocor. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada studi ini dilakukan pengujian mengenai pengaruh ketebalan lapisan polutan dengan mengukur tingkat ESDD pada permukaan isolator terhadap besar arus bocor dan tegangan pre-breakdown pada permukaan isolator polimer. Untuk menganalisis hal tersebut maka dilakukan pengujian akselerasi umur isolator dengan memberikan kabut polutan buatan dan tekanan lingkungan pada isolator sebagai bentuk pre-kondisi akselerasi umur isolator yang dilakukan didalam chamber pengujian akselerasi umur isolator. Selanjutnya untuk mengetahui pengaruh kontaminan garam terhadap kemampuan kuat dielektrik isolator maka dilakukan pengujian withstand dan pre-breakdown voltage. Pengujian tersebut dilakukan guna mengetahui pengaruh ketebalan lapisan polutan terhadap nilai arus bocor dan pre-breakdown voltage. Hasil dari studi ini didapatkan bahwa kemampuan dielektrik isolator dipengaruhi oleh ketebalan lapisan polutan pada permukaan isolator polimer. Nilai arus bocor dan pre-breakdown voltage ketika isolator dalam keadaan baru berturut-turut adalah 0.7278mA dan 55kV. Sedangkan ketika ketebalan ESDD pada permukaan isolator 0.3994 gr/cm2 besar arus bocor dan pre-breakdown voltage berturut-turut 5.259 mA dan 38kV. Pada studi ini juga dilakukan pengujian SEM dan didapatkan hasil pada permukaan isolator polimer yang terkontaminasi muncul retakan yang timbul akibat lapisan polutan. Retakan ini meningkatkan aktivitas dry band arcing dan corona. Sedangkan, pada permukaan isolator tanpa kontaminan tidak terdapat polutan dan permukaan jadi lebih rata.=============================================================================================================In this study, testing about the effect of the thickness contaminant level by measuring ESDD level on insulator surface against leakage current and pre-breakdown voltage on insulator polymer surface was investigated. To analyze the effect of the thickness contaminant level, then accelerated aging test is needed as a pre-condition insulator. This test is done by giving artificial contaminants and environmental pressure. This test was tested in accelerated aging chamber. Then to find the effect of contaminations against dielectrics strength, withstand test and pre-breakdown voltage measurement is required. This test be used to find the effect of ESDD thickness against the leakage current and pre-breakdown voltage. The value of leakage current and pre-breakdown voltage in new polimer insulator is 0.7278mA and 55kV. When the ESDD thickness is 0.3994 gr/cm2 the leakage current and pre-breakdown voltage on insulator is 5.259 mA and 38kV. So, the conclusion is thickness of ESDD give effect to increase dry band arcing activities on insulator surface. This activities can arise corona on insulator surface. Corona can leads the electrical lossess on system. In this study testing of SEM and obtained results on the surface of polymer contaminated insulator appears cracks arising due to layers of pollutants is carried out. These cracks increases the activity of the dry band arcing and corona.

Item Type: Thesis (Undergraduate)
Additional Information: RSE 621.319 37 Kus a
Uncontrolled Keywords: Isolator Polimer, Pengujian akselerasi umur isolator, ESDD, Arus Bocor, Pre-Breakdown Voltage, SEM.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission
Divisions: Faculty of Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User: Anisa Kusumaningrum
Date Deposited: 05 Feb 2018 07:57
Last Modified: 08 Mar 2019 02:05
URI: http://repository.its.ac.id/id/eprint/44399

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