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All Journal Jurnal Ilmiah Poli Rekayasa Elektron Jurnal Ilmiah Jurnal Andalas: Rekayasa dan Penerapan Teknologi
Riza Widia
Politeknik Negeri Padang
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Other

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PREDIKSI DISTORSI HARMONISA PADA UTILITY LISTRIK PERUMAHAN YANG DISEBABKAN OLEH BEBAN NONLINIER MENGGUNAKAN STATISTIK PERBANDINGAN LINIER Riza Widia; Herisajani Herisajani; Witrionanda Witrionanda
Elektron : Jurnal Ilmiah Vol 1 No 1 (2009): Elektron Jurnal Ilmiah
Publisher : Teknik Elektro Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (465.473 KB) | DOI: 10.30630/eji.1.1.9

Abstract

Loads of electricity utility consists of linear loads and non linear loads. The non linear loads for example TV, personal computer, VCD player, microwave and fluorescent lamp using electronics ballast. Loads with non linear characteristics become harmonic current source to electricity utility. Condition prediction used statistic linear comparison based on load power to THDi (Distortion of Harmonic Current). Measurement result using power quality analyzer and etap 4.0 (Fluke 43B) find typical THDi. The calculation and measurement result of PF and THD to loads of electricity utility show the differences less than 5%. However power factor formulation and distortions of harmonic current is valid
Relai Pengganti Staircase untuk Pengontrolan Beban Listrik dengan Sistem Empat Kawat dan Tiga Kawat Disertai Display Waktu Digital Sebagai Indikator pada Workshop Praktik Perancangan Instalasi Listrik Tri Artono; Riza Widia; Dedi Erawadi; Aldi Rahman; Yuhaidizen Yuhaidizen
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 2 No. 2 (2022): Desember 2022
Publisher : Jurusan Teknik Elektro, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v2i2.27

Abstract

Staircase adalah jenis saklar yang memiliki fitur waktu tunda dan dipakai pada praktikum Perancangan Listrik 1 dan Instalasi Listrik 2. Jumlah saklar Staircase yang dimiliki sedikit dan frekuensi pemakaiannya yang tinggi menyebabkan saklar tersebut cepat rusak serta harga saklar Staircase tergolong cukup mahal menjadi penyebab saklar ini belum memadai dilihat dari segi jumlah dan penggunaanya. Staircase dan Relay Timer adalah objek utama pada penelitian ini, dimana riset diawali dengan identifikasi masalah pada saklar Staircase, selanjutnya menganalisa jenis komponen yang dibutuhkan sebagai pengganti saklar Staircase tanpa mengurangi fitur dan kemampuan sebelumnya kemudian mendesain rangkaian Relay Timer yang dapat dioperasikan pada sistem 3 dan 4 kawat. Pengujian terhadap modul Relay Timer dilakukan untuk mengetahui kemampuan dan keandalannya dan juga untuk memastikan prinsip kerja modul Relay Timer telah sesuai dengan Staircase, selain itu pengujian dilakukan untuk mengetahui fitur dan kelebihan dari modul Relay Timer sebelum digunakan pada praktikum kuliah. Berdasarkan pengujian, pengaturan waktu pada modul Relay Timer sesuai dengan hasil pengukuran waktu menggunakan stop watch, baik sistem 3 kawat dan 4 kawat artinya pengaturan waktu pada modul Relay Timer telah sesuai seperti yang diharapkan bahkan lebih akurat dibandingkan dengan Staircase. Terdapat fitur tampilan/ display digital pada modul Relay Timer yang tidak dimiliki Staircase.
Pengembangan Instalasi Penerangan dan Instalasi Tenaga Listrik Mushalla Al-Barkah Lambung Bukit Kecamatan Pauh Nofri Dodi; Yudia Meka Seftiani; Aulia Oktavia; Firmansyah Firmansyah; Riza Widia; Witri Onanda
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 3 No. 1 (2023): Juni 2023
Publisher : Jurusan Teknik Elektro, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v3i1.40

Abstract

Lambung Bukit Batu Busuk, Pauh, located in Padang City, West Sumatera established a prayer room which was named Mushalla Al-Barkah. This mushalla is used as a place of worship for muslims around Lambung Bukit Batu Busuk Padang. Some of the the worship activities carried out at the mushalla, include congregational prayer activities, Al-Qur’an education and other worship activities. These activities really need electricity in their implementation. The mushalla need loudspeakers to adzan, the mushalla needs lights for lighting at night. However, the incomplete installasyion of electrical installations in the mushalla has resulted in delays in worship activities in the mushalla for the community around Lambung Bukit Batu Busuk, Padang. Because of that the community implementation team carried out the development of lighting installastions and elekctric power installasions at Mushalla Al-Barkah. After this activitiy was complete at the mushalla, the mushalla’s electrical installation was perfect. This activity is useful for partners and can be used as a promotional agenda for the people Lambung Bukit, Pauh to get to know the Padang State Polytechnic.
Karakteristik Medan Listrik-Dekat Petir Positive Cloud to Ground Yudia Meka Seftiani; Ariadi Hazmi; Novizon Novizon; Akbar Abadi; Riza Widia
Elektron : Jurnal Ilmiah Volume 15 Nomor 1 Tahun 2023
Publisher : Teknik Elektro Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/eji.15.1.334

Abstract

This study was conducted on 19 electric field data near positive lightning cloud to ground (+CG). The electric field change of +CG lightning consist of preliminary breakdown (PB) and return stroke (RS). The analysis conducted in this research are: PB/RS ratio, PB-RS separation, pre-return stroke duration, pulse train duration, and individual pulse duration. Furthermore, the relationship between +CG lightning and cloud image satellite was observed the average value of PB/RS ratio, PB-RS separation, prereturn stroke duration, pulse train duration and individual pulse duration were 13,89%, 91,53 ms, 102,23 ms, 1,20 ms,150,31 μs, respectively.
RANCANG BANGUN PROTOTIPE SOLAR CELL OFF GRID PADA LAMPU TAMAN OTOMATIS Muhammad Taufik; Junaidi Asrul; Riza Widia
Jurnal Ilmiah Poli Rekayasa Vol 19, No 1 (2023): Oktober
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jipr.19.1.336

Abstract

This research aims to design an off-grid PLTS system for garden lighting based on IoT that is efficient and effective. This system will use IoT technology to control garden lights automatically based on light levels and time. This Off-Grid PLTS system will be designed based on the energy needs of garden lighting, solar panel and battery capacity, as well as a lighting control system. The results of research on solar panels tested for three days at 06:00 to 18:00 from the results of the first day of research obtained when the weather conditions were clear, the light level was obtained, namely 74000 lux with the power obtained 25.78 watts when charging the battery and when it rains, you get a light level of 800 lux with a charging power of 1.78 watts. From this it can be concluded that the effect of light intensity and weather on solar panels has an effect on charging the garden lamp battery. From the research results, charging the garden lamp battery with 12 V 35 Ah, the charging time is 21 hours 43 minutes with an average charging current of 1.92 A and battery discharge is obtained from research on the state of the automatic light, the battery discharge time is 19 hours 25 minutes with an average current 1.41A average. Bright light battery discharge time 18 hours 2 minutes with an average current of 1.55A.
Co-Authors Akbar Abadi Aldi Rahman Ariadi Hazmi Asrul, Junaidi Aulia Oktavia Dedi Erawadi Firmansyah - - Herisajani Herisajani Muhammad Taufik Nofri Dodi Novizon, Novizon Witri Onanda Witrionanda Witrionanda Yudia Meka Seftiani Yuhaidizen Yuhaidizen