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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) International Journal of Reconfigurable and Embedded Systems (IJRES) International Journal of Applied Power Engineering (IJAPE) International Journal of Advances in Applied Sciences The Journal of Experimental Life Sciences (JELS) Jurnal Teknik Elektro TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Indonesian Journal of Electrical Engineering and Informatics (IJEEI) JURNAL NASIONAL TEKNIK ELEKTRO Proceeding of the Electrical Engineering Computer Science and Informatics PROtek : Jurnal Ilmiah Teknik Elektro Arty: Jurnal Seni Rupa Jurnal SOLMA JURNAL MUQODDIMAH : Jurnal Ilmu Sosial, Politik dan Hummaniora Jurnal Hilirisasi IPTEKS (JHI) Indonesian Journal of Electrical Engineering and Computer Science International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) Hermeneutik : Jurnal Ilmu Al-Qur'an dan Tafsir Jurnal Kepastian Hukum dan Keadilan Andalasian International Journal of Applied Science, Engineering, and Technology Akuntansi'45 COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Andalas Journal of Electrical and Electronic Engineering Technology Jurnal Andalas: Rekayasa dan Penerapan Teknologi Priviet Social Sciences Journal Jurnal Rekayasa elektrika JAMBIS : Jurnal Administrasi Bisnis Eduarts: Jurnal Pendidikan Seni JPP (Jurnal Pendidikan dan Pembelajaran)
Syafii .
Electrical Engineering, Dept., Engineering Faculty, Universitas Andalas
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Public Health Social Sciences Veterinary Other

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PENGEMBANGAN UNIT USAHA PRODUK INTELEKTUAL KAMPUS TEKNOLOGI ENERGI SURYA DI UNIVERSITAS ANDALAS Syafii Syafii; M Imran Hamid
Jurnal Hilirisasi IPTEKS Vol. 2 No. 4.a (2019)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v2i4.a.315

Abstract

Universitas Andalas merupakan universitas tertua di luar pulau Jawa, dan urutan empat tertua di Indonesia yang berdiri tahun 1956. Berdasarkan rencana induk Universitas Andalas 2011-2028 akan menjadi Universitas yang terdepan dibidang pembangunan karakter dan kewirausahaan. Untuk itu Universitas Andalas sangat mendorong usaha-usaha mempercepat proses pengembangan budaya kewirausahaan di perguruan tinggi. Pada artikel ini akan dipaparkan produk-produk teknologi energi surya dari hasil riset dan usaha komersialisasi yang telah dilakukan. Introduksi teknologi yang telah ditawarkan adalah: 1). Solar tracker untuk solar panel plant. 2). Produk teknologi pemantauan dan kendali PLTS berbasi IoT, 3). Smart Automatic Transfer Switch, 4). Jasa konsultasi dan instalasi PLTS. Usaha komersialisasi yang telah dilakukan adalah sosialisasi dan penyebarluasan melalui aplikasi Google Bisnisku.
MEMBANGUN KEMANDIRIAN EKONOMI KELUARGA PEMULUNG TPA AIR DINGIN KOTA PADANG MELALUI PELATIHAN KETERAMPILAN PEMANFAATAN SAMPAH PLASTIK MENJADI KREASI YANG BERGUNA Wati Wati; Meri Rahmania; Syafii Syafii; Gustia Harini
Jurnal Hilirisasi IPTEKS Vol. 7 No. 2 (2024)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v7i2.797

Abstract

Waste management is a crucial issue. Therefore, it is important to maintain environmental cleanliness and prevent pollution. Recycling waste can have economic value, thereby enhancing the economic independence of the community. The aim of this activity is to reduce the impact of plastic waste by utilizing it creatively to increase added value. This activity was carried out at the Air Dingin Final Disposal Site (TPA) in Lubuk Minturun, Padang City. It involved 30 participants, the majority of whom were women scavengers. The activity took place at the house of the local neighborhood leader. During the activity, participants received training on how to utilize plastic waste. The community service team demonstrated how to use tools such as scissors, box cutters, tape, and cables. Practical demonstrations were provided to ensure participants understood how to transform plastic into useful creations. Throughout the activity, participants were encouraged to freely create from used plastic and collaborate on various ideas. Discussions on the importance of environmental awareness and recycling education also took place. Participants were educated on the negative impacts of plastic waste and how they can contribute to reducing this issue. The implementation team also measured the impact of the activity. Quantitatively, they monitored the amount of plastic successfully recycled and calculated the potential reduction in plastic waste. Qualitatively, they noted changes in participants' attitudes towards waste management and environmental awareness. After the activity concluded, evaluations were conducted for future improvements. Discussions on what was successful and what needed improvement helped identify opportunities for enhancement.
Solar power forecasting using a SARIMA approach for Indonesia's grid integration Ricky Maulana; Syafii Syafii; Aulia Aulia
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 17, No 1: March 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v17.i1.pp293-302

Abstract

Indonesia’s transition toward a renewable energy-dominated power grid is progressing to meet increasing energy demands while reducing dependence on fossil fuels. According to the National Energy General Plan, their goal is to have 23% of the energy mix come from renewables by 2025 and 31% by 2050. Accurate forecasting of photovoltaic (PV) power output is crucial to address the intermittent nature of solar energy and ensure grid stability. A seasonal autoregressive integrated moving average (SARIMA) model was developed to estimate day-ahead photovoltaic power output in Padang City, Indonesia. Using NASA solar irradiance data from March 1-31, 2024, the SARIMA(1,0,1)(4,0,3)24 model achieved high accuracy with an NRMSE of 4.19%. To evaluate its performance, a comparative evaluation was conducted between the SARIMA model and two machine learning methods, namely artificial neural network (ANN) and long short-term memory (LSTM), in which SARIMA achieved the lowest forecasting error. These findings indicate that SARIMA remains an effective and interpretable statistical method for short-term PV forecasting, supporting reliable energy planning and power grid operations towards Indonesia's renewable energy goals.
Enhancing security in portable solar power supply design for alternative energy applications Syafii Syafii; Benny Dwika Leonanda; Novizon Novizon; Rindina Armysa
International Journal of Applied Power Engineering (IJAPE) Vol 15, No 1: March 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v15.i1.pp120-131

Abstract

Access to reliable electricity remains a challenge in remote and off-grid areas, where conventional power sources are often unreliable or unavailable. This paper presents the design and development of an internet of things (IoT) system for monitoring and securing a portable solar power station tailored for alternative energy applications. The system, which can be recharged using photovoltaic energy sources, employs a coulomb counting method to accurately estimate the battery's state of charge (SoC) and prevent overcharging and overdischarging. The portable power supply provides stable direct current (DC) outputs (5 V, 12 V, 24 V) and an alternating current (AC) output for various remote area applications, including telecommunications and household use. A dual-relay mechanism is used for battery protection: one relay disconnects charging at 100% SoC and reactivates at 70%, while the other disconnects the load at 20% SoC to avoid deep discharge. IoT connectivity enables real-time monitoring and remote control via smartphone. This development promotes efficient energy management, battery longevity, and improved access to sustainable electricity in underserved regions.
A framework for multi-interval optimal power flow under solar energy penetration Ricky Maulana; Syafii Syafii; Aulia Aulia
Bulletin of Electrical Engineering and Informatics Vol 15, No 2: April 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v15i2.11091

Abstract

The increasing penetration of renewable energy introduces variability and uncertainty into power system operations, thus requiring accurate forecasting methods to ensure reliable and economical scheduling. This study presents a multi-interval day-ahead optimal power flow (OPF) analysis integrated with photovoltaic (PV) generation, where hourly PV forecasts are obtained using the seasonal autoregressive integrated moving average (SARIMA) (1,0,1)(4,0,3)24 model. The forecast results achieved low error values (root mean square error (RMSE)=0.354, normalized RMSE (NRMSE)=4.192%, mean absolute error (MAE)=0.202), successfully capturing the daily PV generation pattern and providing sufficiently accurate input for the OPF simulation. The forecasted PV profiles were then integrated into a multi-interval OPF framework using the MATPOWER interior point solver (MIPS) solver. Results show that PV integration reduces system operating costs compared to cases without PV, with cost savings observed at various time intervals (e.g., reduction from $802.22/hour to $780.65/hour during PV peak hours). Compared to the conventional single-interval OPF benchmark based on Weibull distribution assumptions for PV, the proposed framework achieves lower average costs ($790.97/hour vs. $869.70/hour) while also reflecting the real variability of solar dynamics and load. Overall, the integrated forecasting-optimization framework demonstrates that SARIMA-based PV forecasting provides reliable inputs for OPF and offers a practical tool to support future system planning and operation with higher renewable energy penetration.
Assessment of AEKF SoC Estimation in a LiFePO₄ Battery System with Relay Switching Control Imam Hidayat Usman; Syafii Syafii; Novizon Novizon; Aulia Aulia
PROtek : Jurnal Ilmiah Teknik Elektro Vol 13 No 2 (2026): Protek : Jurnal Ilmiah Teknik Elektro
Publisher : Program Studi Teknik Elektro Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/protk.v13i2.11204

Abstract

This study implements an Adaptive Extended Kalman Filter (AEKF) for real-time state of charge (SoC) estimation to support charge–discharge regulation in a LiFePO₄ battery system integrated with photovoltaic (PV) generation. Due to the variability of PV output, accurate and stable SoC estimation is essential for ensuring reliable battery operation. A first-order equivalent circuit model (1RC ECM) is employed to represent battery dynamics based on measured current and terminal voltage. The proposed AEKF algorithm is implemented on a Raspberry Pi 5 to enable real-time computation, and the estimated SoC is directly used as the control variable in a dual-relay switching mechanism to regulate charging and discharging processes. Experimental results show that the proposed method achieves a Mean Absolute Error (MAE) of 1.24% and a Root Mean Square Error (RMSE) of 1.58%, which are both below the 5% target specified in the system design. The system successfully maintains the battery within a safe SoC range of 57.5% to 85.2%, while ensuring stable relay operation without chattering under dynamic load and charging conditions. These results demonstrate that the proposed AEKF-based approach provides accurate, stable, and practical SoC estimation, making it suitable for real-time battery management in small-scale energy storage applications.
Development of numerical algorithm for power system computation as project-based learning in numerical methods course Syafii Syafii; Baik Budi
JPP (Jurnal Pendidikan dan Pembelajaran) Vol. 32 No. 2 (2025)
Publisher : Lembaga Pengembangan Pendidikan dan Pembelajaran, Universitas Negeri Malang in Collaboration with Asosiasi Pendidik dan Pengembang Pendidikan Indonesia (APPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This article presents the application of a Project-Based Learning (PjBL) approach in the Numerical Methods course, focusing on developing a numerical algorithm for power system computation. The study addresses the challenges of efficiently calculating the bus admittance matrix (Ybus), bus numbering sequences, and handling double-line connections, all crucial for accurate power flow analysis. The objective is to create an efficient algorithm that can be applied to a 7-bus power system, enhancing students' practical skills in numerical methods. The results demonstrate that the algorithm successfully computes the Ybus matrix, resolves bus numbering issues, and handles double-line connections. This approach not only improves computational efficiency but also deepens students' theoretical knowledge and practical problem-solving abilities. The study highlights the effectiveness of PjBL in teaching numerical methods, offering valuable insights for its application in other engineering fields to enhance both learning and real-world problem-solving skills.
The Qur’anic Values of Sakinah, Mawaddah, and Rahmah: Relevance for Islamic Marriage in Contemporary Society Syafii, Syafii; Imran, Maryam Ibnata; Ihcsan, Catur Maulana
HERMENEUTIK : Jurnal Ilmu al-Qur'an dan Tafsir Vol 20, No 1 (2026): Hermeneutik: Jurnal Ilmu al-Qur'an dan Tafsir
Publisher : Program Studi Ilmu Al-Qur`an dan Tafsir, Fakultas Ushuluddin, UIN Sunan Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21043/hermeneutik.v20i1.37558

Abstract

Marriage in Islam is a sacred institution aimed at establishing a harmonious family based on the values of sakīnah, mawaddah, and raḥmah, while also realizing maṣlaḥah (public and private welfare). These values are implemented through the principle of muʿāsharah bil maʿrūf, which emphasizes justice and the balanced fulfillment of rights and obligations between husband and wife. However, urbanization, individualism, and the digitalization of family life present new challenges, thereby necessitating further study on their meanings and applications in contemporary contexts. This study employs a qualitative approach using the library research method. The data are derived from secondary sources and analyzed through descriptive analysis, while the conclusions are drawn using a deductive approach. The values of sakīnah, mawaddah, and raḥmah in the Qur’ān constitute an integrated ethical framework for constructing harmonious marital life: sakīnah provides inner tranquility and emotional stability, mawaddah represents active and sustained love expressed through care and commitment, and raḥmah embodies compassion, patience, and empathy, particularly in times of hardship. Collectively, these three values form the foundational objectives of Islamic marriage by fostering a stable, loving, and compassionate family life in accordance with sharīʿah. In contemporary settings characterized by urbanization, individualism, and digitalization, these values are actualized through adaptive practices such as healthy communication, emotional presence, balanced rights and obligations, and the ethical use of technology, and are further reinforced through family worship and parental responsibility. Together, they ensure that Islamic marital life remains spiritually grounded, emotionally balanced, and socially resilient in the face of modern challenges. Pernikahan dalam Islam merupakan institusi yang sakral dengan tujuan membangun keluarga yang harmonis berdasarkan nilai-nilai sakīnah, mawaddah, dan raḥmah, sekaligus mewujudkan maṣlaḥah (kemaslahatan) bagi individu maupun masyarakat. Nilai-nilai tersebut diwujudkan melalui prinsip muʿāsharah bil maʿrūf, yang menekankan keadilan serta pemenuhan hak dan kewajiban secara seimbang antara suami dan istri. Namun, urbanisasi, individualisme, dan digitalisasi menghadirkan tantangan baru yang menuntut kajian lebih mendalam mengenai makna dan implementasi nilai-nilai tersebut dalam konteks kontemporer. Penelitian ini menggunakan pendekatan kualitatif dengan metode studi kepustakaan (library research). Data diperoleh dari berbagai sumber sekunder dan dianalisis menggunakan teknik analisis deskriptif, sedangkan penarikan kesimpulan dilakukan melalui pendekatan deduktif. Hasil penelitian menunjukkan bahwa nilai-nilai sakīnah, mawaddah, dan raḥmah dalam Al-Qur’an merupakan kerangka etika yang terpadu dalam membangun kehidupan rumah tangga yang harmonis. Sakīnah memberikan ketenangan batin dan stabilitas emosional, mawaddah merepresentasikan kasih sayang yang aktif dan berkelanjutan yang diwujudkan melalui kepedulian dan komitmen, sedangkan raḥmah mencerminkan belas kasih, kesabaran, dan empati, terutama dalam menghadapi berbagai kesulitan. Ketiga nilai tersebut secara kolektif menjadi tujuan utama pernikahan Islam dengan membentuk kehidupan keluarga yang stabil, penuh cinta kasih, dan berlandaskan kasih sayang sesuai dengan prinsip-prinsip syariat. Dalam konteks masyarakat kontemporer yang ditandai oleh urbanisasi, individualisme, dan digitalisasi, nilai-nilai tersebut diaktualisasikan melalui praktik-praktik adaptif seperti komunikasi yang sehat, kehadiran emosional, keseimbangan hak dan kewajiban, penggunaan teknologi secara etis, serta diperkuat melalui ibadah dalam keluarga dan tanggung jawab orang tua. Dengan demikian, nilai-nilai tersebut memastikan bahwa kehidupan pernikahan dalam Islam tetap berlandaskan spiritualitas, memiliki keseimbangan emosional, dan tangguh secara sosial dalam menghadapi tantangan zaman.
Co-Authors ., Cahayahati ., Delima ., Erliwati ., Kamshory Abadi, Akbar Aditio Pribadi, Rizki Adrianti Adrianti Adrianti, Adrianti Agung W. Setiawan Agustin, Hanna Jenifer Akshar, Muh Alex, Taman Ali Basrah Pulungan Almoataz Youssef Abdelaziz Andi Pawawoi Andrivo Rusydi Arnawan Hasibuan Arya, Engla Harda Asrizal . Aswardi Aswardi Aulia . Aulia Aulia Axel Doriza Azhari Zakri , Azriyenni Azizah, Farah Azriyenni Azhari Zakri Azzahrah, Nadia Fatimah Baik Budi Beni Nugroho, Dionysius Benny Dwika Leonanda Benriwati Maharmi Budi Endarto Cahayahati . Chamdani Chamdani Dadan Ramdan Danas, Aidil Darmana, Ija Dawam Habibullah Dawam Habibullah Delima . Dian Noviandri Dina Maizana Dona Juliandri Edyan Noveri Elmiyasna Kimin Elysia Sholiha, Almira Rahma Endang Tri Wahyuni Erliwati . Fahreza, Rahmad Fajril Akbar Farah Azizah Fierda Nurany, Fierda Fikriyatullatifah, Anisa Fitriyan, Rahmawati Gumilar, Candra Gustia Harini Habib Satria Habib Satria Habibullah, Dawam Hanalde Andre Handayani, Mia Putri Hasdi Putra, Hasdi Hermansyah Hermansyah Herris Yamashika Herris Yamashika Heru Irianto Hidayatullah Ismail, Hidayatullah Ihcsan, Catur Maulana Ija Darmana Ika Putri, Kartika Ilham Cholid Ilhamdi Rusydi, Muhammad Imam Fauzi Ath Thaariq Imam Hidayat Usman Imran, Maryam Ibnata Indrajaja, Nobella Indri Dayana Irfan El Fakhri Ita Merni Patulak Jaka Windarta Juliandri, Dona K. M. Nor K. M. Nor K. M. Nor Kamsidjo Budi Utomo Kamsory Kamsory, Kamsory Kartika Ika Putri Kartika Sri Kumala Sari Khin Moe Moe Kurniawan, Sulistyo Agung Dwi Kusnadi, Sekar Ayumeida Laksono, Heru Dibyo Layrenshia, Belinda Leily Wustha Johar Liambana, Junlianty Lovely Son, Lovely M Imran Hamid M. Yonggi Puriza Maharmi, Benriwati Marroh, Zahrotul Isti'anah Matalata, Hendi Maulidi, M. Alfi Meri Rahmania Mochammad Novendri S Moe, Khin Moe Mohammad Taufiq Hidayat Monice Monice Moranain Mungkin Muhammad Fadlan Siregar Muhammad Hadi Putra, Muhammad Hadi Muhammad Imran Hamid Muhammad Irwanto Muhammad Irwanto Muhammad Khahfi Zuhanda Muhammad Nasir Muhammad Nurdin Muhammad Ridha Fauzi Muhardika Muhardika Mumtazah, Lutfia Anis Muzamir Isa Nasir, Hikmah Afifah Nasir, Muhammad Nofri Dodi Noor Azahra, Anggraeni Novizon, Novizon Nur Izrillah, Imra Nurdin, Muhammad Nurmarini, Eva Perdana Putra, Ilham Prihadini, Diana Purwadhi Purwadhi Putri, Lusi Ngestina Rahmad B.Y Syah Rahmad Fahreza Rahmawati Fitriyan Refdinal Nazir Ricky Maulana Ricky Maulana Ridwan, Ridwan Rindina Armysa Rizka Hadelina Roni Putra Rudi Salam Rudi Salam Rusydi, Muhammad Ilhamdi Salfikri, Iqbal Sapto Nisworo Since Yuliana Frans, Inggrid Slamet Raharjo Sugiono Sugiono Syah, Rahmad B. Y. Syah, Rahmad B.Y Syukri Yunus Tahrir, Muhammad Thoriq Kurnia Agung Thoriq Kurnia Agung Veranita, Mira Wati Wati Wati Wati Wati Wati Wati, Wati Welly Yandi Welly Yandi Yandi, Welly Yona Mayura Yudi Arfan Yusdiansyah, Yusdiansyah Zahroni, Teguh Rizali Zarta, Abdul Rasyid Zulwisli .