Deteksi Single and Multisource Partial Dischagre pada Isolasi Udara Menggunakan Sinyal Ultra High Frequency (UHF)

Dewira, Roikhana Farista (2021) Deteksi Single and Multisource Partial Dischagre pada Isolasi Udara Menggunakan Sinyal Ultra High Frequency (UHF). Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Partial Discharge (PD) adalah fenomena awal terjadinya breakdown pada peralatan isolasi. Pendeteksian dini untuk PD merupakan tindakan preventive yang terus dicari tingkat efektifitasnya agar menemukan pendeteksian tanpa kontak fisik dan memudahkan monitoring. Pada sebuah sistem isolasi, PD tidak hanya terjadi pada satu lokasi, tetapi sangat mungkin terjadi pada beberapa lokasi dan pada studi ini disebut sebagai multisource PD. Dengan demikian, diperlukan peralatan pendeteksi multisource PD yang efektif. Pemanfaatan Ultra High Frequency (UHF) untuk mendeteksi PD merupakan inovasi baru yang terus dicari perkembangan autentifikasinya. Penelitian ini juga memanfaatkan UHF untuk mendeteksi beberapa peristiwa PD dengan cara memanfaatkan dua buah jenis elektroda yaitu needle to plane dan rod to plane sebagai implikasi dari dua sinyal PD. Sinyal UHF ditangkap oleh antena monopole, dan disalurkan ke signal processor berupa NI 9775 sehingga dapat menerima sinyal sebesar 1500 cycle. Hasil dari NI 9775 diolah menggunakan matlab untuk mendapatkan Phase-Resolved Partial Discharge (PRPD). PRPD adalah pola PD yang umum dipergunakan untuk monitoring terjadinya PD yang dapat dipergunakan untuk menentukan kemungkinan asal dari PD. PRPD yang didapat oleh antena dibandingkan dengan hasil PRPD HFCT untuk mengetahui keefektifan penggunaan antena dalam mendeteksi PD. Selain itu, untuk mengidentifikasi antena maka digunakan varian jarak untuk mengetahui peletakan jarak antena yang lebih efektif menangkap PD. Pemanfaatan UHF juga diidentifikasi melalui perubahan sinyal radio yang tertangkap oleh antena ketika terdapat sinyal PD saat pengujian. Hasil penelitian menunjukkan penggunaan HFCT masih menjadi pendeteksi PD yang paling efektif. Peletakkan antena monopole yang paling baik dalam pendeteksian PD terletak pada jarak 5cm dari elektroda tunggal maupun multisource. Berdasarkan penelitian menunjukkan bahwa PD pada isolasi udara terdapat pada frekuensi 100MHz-450MHz.
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Partial Discharge (PD) is the initial phenomenon of a breakdown in isolation equipment. Early detection for PD is a preventive measure whose effectiveness is continuously sought in order to find detection without physical contact and to facilitate monitoring. In an isolation equipment, PD is generally not only at one location, it could be that in the equipment there are two different location where the PD event occurs and it is called a multisource PD. Thus, equipment is needed to detect multisource PD effectively.
The use of Ultra High Frequency (UHF) to detect PD is a new innovation that continues to be searched for in its authentication development. This study also utilizes UHF to detect several PD events by utilizing two types of electrodes, namely needle to plane and rod to plane as implications of the two PD signals. The UHF signal is captured by the monopole antenna, and transmitted to the signal processor in the form of the NI 9775 so that it can receive a signal of 1500 cycles. The results from NI 9775 were processed using Matlab to obtain Phase-Resolved Partial Discharge (PRPD). PRPD is a pattern of PD that is commonly used for monitoring the occurrence of PD which can be used to determine the possible origin of PD. The PRPD obtained by the antenna is compared with the PRPD HFCT results to determine the effectiveness of using the antenna in detecting PD. In addition, to identify the antenna, a distance variant is used to determine the placement of the antenna distance which is more effective in capturing PD. Utilization of UHF can also be identified through changes in the radio signal captured by the antenna when there is a PD signal during testing.
The results showed that the use of HFCT is still the most effective PD detector. Positioning the best monopole antenna for PD detection at a distance of 5cm from single and multi-electrode. Based on the research shows that PD in air insulation is at a frequency of 100MHz-450MHz.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Antena, Multisource Partial Discharge, Ultra High Frequency
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3401 Insulation and insulating materials
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20101-(S2) Master Thesis
Depositing User:	Roikhana Farista Dewira
Date Deposited:	13 Aug 2021 11:39
Last Modified:	13 Aug 2021 11:39
URI:	http://repository.its.ac.id/id/eprint/86241

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