Penulis / NIM
I MADE ALIT PUTRA / 521411014
Program Studi
S1 - TEKNIK ELEKTRO
Pembimbing 1 / NIDN
LANTO MOHAMAD KAMIL AMALI, MT / 0004047704
Pembimbing 2 / NIDN
ADE IRAWATY TOLAGO, ST, MT / 0914027501
Abstrak
ABSTRAK
I Made Alit Putra, 2018. Pengaruh Bentuk Isolator 20 kV terhadap Tegangan Lewat Denyar Akibat Polutan tak Larut. Skripsi, Program Studi S1 Teknik Elektro, Jurusan Teknik Elektro, Fakultas Teknik, Universitas Negeri Gorontalo. Pembimbing I Bapak L.M Kamil Amali, ST.,MT dan Pembimbing II Ibu Ade Irawaty Tolago, ST.,MT.
Salah satu peralatan pada jaringan trasmisi dan distribusi adalah isolator. Isolator ini berfungsi sebagai penyekat antara konduktor dan tiang listrik agar tidak terjadi hubung singkat. Pada saluran disribusi 20 kV ada berbagai macam tipe isolator yang digunakan diantaranya tipe clevis (soket)11 kV, tipe post 20 kV, tipe pin-post 20 kV, tipe pasak 20 kV dan tarik kaca 11 kV. Isolator ini mempunyai rating kerja teganganya sesuai yang di standarkan. Akan tetapi, penelitian tentang kehandalan dari isolator ini belum teruji dengan kondisi iklim tropis di Indonesia khususnya terhadap tengangan lewat denyar.
Pengujian tegangan lewat denyar dilakukan pada isolator tipe clevis (soket)11 kV, tipe post 20 kV, tipe pin-post 20 kV, tipe pasak 20 kV dan tarik kaca 11 kV pada kondisi pengujian isolator sebelum terpolusi dan sesudah terpolusi. Untuk pengujian kondisi isolator terpolusi digunakan polutan kaolin sebagai pengotor pada isolator tersebut.
Hasil penelitian menujukkan karakteristik tegangan lewat denyar dari ke 5 (lima) tipe isolator yang diuji pada saat kondisi sebelum terpolusi diperoleh nilai tegangan lewat denyar memenuhi standar tegangan kerja dari isolator tersebut yakni sebesar 17,965 kV-18,73 kV untuk isolator tipe clevis dan tipe tarik kaca. Sedangkan isolator tipe post, tipe pin-post, tipe pasak sebesar> 53,432 kV. Untuk pengujian isolator pada kondisi terpolusi basah isolator tipe clevis dan tarik kaca tidak memenuhi standar sebesar 9.07 kV sedangkan tipe pasak sebesar 17,28 kV dan untuk tipe post serta tipe pin post memenuhi standar diatas 20 kV.
Kata kunci :tegangan lewat denyar, isolator, kaolin
ABSTRACT
I Made Alit Putra, 2018. The Effect of Insulator 20 kV Shape on the Flashover Voltage Caused by Insoluble Pollutant. Skripsi, Bachelor's Degree in Electrical Engineering, Department of Electrical Engineering, Faculty of Engineering, State University of Gorontalo. The principal supervisor is L.M. Kamil Amali, ST., MT, and the co-supervisor is Ade Irawaty Tolago, ST., MT.
One of the tools at transmission and distribution network is an insulator, and it functions as a partition between conductor and power pole in order to avoid short circuit. There are various types of the insulator at 20 kV distribution network such as clevis (sicket) 11 kV, post 20 kV, pin-post 20 Kv, pin 20 kV, and glass-strain 11 kV. These insulators have voltage work rating based on the standard. However, a research on the reliability of insulator is not verified with the tropical climate in Indonesia, particularly on the flashover voltage.
The testing over flashover voltage was conducted at insulator for following types namely clevis (socket) 11 kV type, post 20 kV type, pin-post 20 kV type, pin 20 kV type, and glass-strain 11 kV type at insulator testing condition before and after polluted. The polluted insulator conditioner testing used kaolin pollutant as polluter at the insulator.
Finding of research showed that characteristic of flashover voltage from those 5 (five) types of insulator before a polluted obtained value of flashover voltage meeting work voltage standard for 17,965 kV- 18,73 kV for clevis and glass-strain types insulator. Meanwhile, the post, pin-post, and pin types insulator were higher than 53,432 kV. In addition, the insulator testing after wet and polluted condition found that clevis and glass-strain did not meet the standard for 9.07 kV whereas pin for 17,28 kV and post and pin post have met the standard for 20 kV.
Keywords : flashover voltage, insulator, kaolin
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