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DESAIN PEMANFAATAN SISTEM PEMBANGKIT HYBRID DIESEL GENERATOR-PV INTERAKTIF GRID Asriningati Asriningati; Agus Suryanto
Jurnal Teknik Elektro Uniba (JTE UNIBA) Vol. 6 No. 2 (2022): JTE UNIBA (Jurnal Teknik Elektro Uniba)
Publisher : Lembaga Penelitian Universitas Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36277/jteuniba.v6i2.160

Abstract

Pemanfaatan sumber energi terbarukan dalam bentuk sistem pembangkit hybrid saat ini menjadi salah satu upaya yang dapat dilakukan untuk mengurangi penggunaan bahan bakar fosil. Sistem interaktif grid yang memanfaatkan photovoltaic array dan diesel generator sebagai sumber energi dapat diaplikasikan di Gedung Dekanat, Fakultas Teknik UNNES dimana saat ini masih mengandalkan sumber energi fosil. Perangkat lunak yang digunakan dalam pemodelan sistem ini yaitu software ETAP 12.6. Hasil dari simulasi ETAP bahwa PV Array dapat menghasilkan daya sebesar 25,9 kW dan memiliki potensi pengurangan daya terpakai grid PLN yang didapat dari sistem hybrid sebesar 54% sehingga dapat dijadikan opsi yang lebih baik dari sistem sebelumnya. Tujuan dari pemodelan sistem ini yaitu mempermudah analisa sistem pembangkit hybrid PV dan diesel agar performanya sesuai dengan yang diinginkan. Pemodelan dan simulasi tersebut dapat digunakan sebagai alat bantu dalam merancang, membangun dan menganalisa sistem pembangkit energi hybrid PV dan diesel. Sistem interaktif grid ini merupakan penggabungan antara photovoltaic array, diesel generator dan juga jaringan listrik PLN. Tegangan keluaran dari PV akan diubah dari DC menjadi AC dengan menggunakan inverter. Ketika PV belum bisa menyuplai beban sebepenuhnya maka jaringan listrik PLN dan diesel generator akan masuk untuk membantu menyuplai beban.
ANALISIS SISTEM GROUNDING PADA GARDU INDUK 150KV TEMANGGUNG DENGAN SIMULASI SOFTWARE ETAP Friska Rizqi Pratiwi; Agus Suryanto
Jurnal Teknik Elektro Uniba (JTE UNIBA) Vol. 5 No. 2 (2021): JTE UNIBA (Jurnal Teknik Elektro Uniba)
Publisher : Lembaga Penelitian Universitas Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36277/jteuniba.v5i2.91

Abstract

Sistem pentanahan merupakan sistem yang menghubungkan komponen gardu induk, badan peralatan, dan instalasi dengan tanah sehingga dapat mengamankan manusia dan komponen-komponen instalasi dari bahaya tegangan atau arus abnormal. Sistem pentanahan yang sering digunakan adalah kombinasi grid dan rod. Tujuan penelitian ini yaitu menganalisis sistem pentanahan gardu induk 150 kV Temanggung menggunakan software ETAP 12.6.0 dan membandingkan rancangan sesungguhnya dengan model sistem pentanahan lain yaitu model L, T, dan segitiga dengan jarak konduktor rod dan grid yang sama dengan rancangan sesungguhnya berdasarkan standar IEEE std 80-2013. Hasil analisis penelitian ini yaitu tegangan sentuh yang diizinkan adalah 1401,6 V untuk berat badan 50 kg dan 1896,9 V untuk berat badan 70 kg serta tegangan langkah yang diizinkan adalah 5018 V untuk berat badan 50 kg dan 6791,6 V untuk berat badan 70 kg. Tegangan sentuh dan tegangan langkah sesungguhnya adalah 1345.6 dan 880,2 V. Dengan total panjang konduktor 1623 meter. Dari beberapa rancangan model yang diterapkan rancangan model T yang terbaik dari segi ekonomis sesuai standar IEEE std 80-2013 yaitu  1190 meter.
Pelatihan Pembuatan kerajinan Limbah Kayu Gergaji untuk Meningkatkan Pendapatan Karang Taruna Desa Sulistyaningrum, Dyah Erlina; Amin, Moh.; Suryanto, Agus; Yuwono, Amrih; Mirlana, Dendy Eta; Prayitno, Edy
JIIP - Jurnal Ilmiah Ilmu Pendidikan Vol. 6 No. 1 (2023): JIIP (Jurnal Ilmiah Ilmu Pendidikan)
Publisher : STKIP Yapis Dompu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (256.782 KB) | DOI: 10.54371/jiip.v6i1.1351

Abstract

Pengabdian ini bertujuan untuk: (1) Memberikan pelatihan ketrampilan dan pengetahuan baru kepada para peserta anggota karang taruna Desa Purworejo, Kecamatan Balong, Kabupaten Ponorogo tentang pemanfaatan limbah kayu gergajian sebagai kerajinan tangan. (2) Memanfaatkan limbah kayu sebagai kerajinan tangan untuk meningkatkan pendapatan karang taruna di Desa Purworejo, Kecamatan Balong, Kabuaten Ponorogo. Jenis pengabdian ini adalah pengabdian kepada masyarakat. Salah satu upaya untuk menambah pendapatan karang taruna adalah dengan mengolah kembali limbah kayu menjadi sesuatu yang memiliki nilai jual seperti dibuat rak dinding. Pemanfaatan limbah kayu masih terbatas saat ini, sehingga disaat warga desa banyak yang merenovasi rumah, limbah kayu yang melimpah dapat mencemari lingkungan. Tujuan kegiatan Pengabdian Kepada Masyarakat (PKM) ini adalah memberikan solusi dengan mengadakan pelatihan cara pembuatan kerajinan tangan dari limbah kayu secara sederhana. Peserta kegiatan PKM ini adalah karang taruna di Desa Purworejo, Kecamatan Balong, Kabupaten Ponorogo. Kegiatan yang dilakukan adalah dengan mensosialisasikan manfaat serta cara membuat kerajinan tangan kepada karang taruna. Pada karang taruna diberikan contoh alat untuk proses pemotongan limbah kayu dan diperlihatkan secara langsung cara kerjanya sampai pada proses pengemasan hingga siap untuk dijual. Karang taruna di Desa Purworejo diharapkan mampu memanfaatkan limbah kayu menjadi sesuatu yang bernilai jual, sehingga diharapkan dapat memberikan keuntungan dari segi ekonomi, kebersihan lingkungan, maupun dari segi pelestarian lingkungan.
Construct validity of the instrument of digital skill literacy Muhammad Harlanu; Agus Suryanto; Syahrul Ramadhan; Endang Wuryandini
Jurnal Cakrawala Pendidikan Vol 42, No 3 (2023): Cakrawala Pendidikan (October 2023)
Publisher : LPMPP Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/cp.v42i3.59703

Abstract

This research is descriptive research that is conducted by quantitative approach to find out the validity and reliability of an instrument. The population in this research is all active college students at the State University of Semarang in nine faculties, taking sample is conducted by probability-sampling that means all population has the same chance to be a research subject. The number of samples in this research is 300 of people. The technique of data analysis on the validity verification in this research used Confirmatory Factor Analysis (CFA) technique. Meanwhile, for the estimation of reliability, the researcher used the formula of Cronbach’s Alpha. The data analysis is supported by JAMOVI program. The result of research shows that a) the instrument of digital skill literacy has fulfilled the criteria of goodness of fit with the result; 1) x2 = 162 dan df = 143; 2) p-value = 0,133; 3) RMSEA 0,021; 4) SRMR = 0,026; 5) and CFI = 0,99; b) the result of CFA shows 20 items that is divided by the indicator such as functional skill beyond, creativity, collaboration, communication, the ability to find select information, critical thinking and evaluation, cultural and social understanding, E-Safety have fulfilled valid criteria with the average score of loading factor is 0.80. c) the reliability of literacy digital skill instrument shows the estimation value which is 0.943 or very reliable.
Optimalisasi Keluaran Panel Surya Menggunakan Solar Tracker Berbasis Kamera Terintegrasi Raspberry Pi Agus Suryanto; Noor Hudallah; Tatyantoro Andrasto; Cahyo Fajar Adhiningtyas; Seftriana Anifa Khusniasari
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 10 No 3: Agustus 2021
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1268.265 KB) | DOI: 10.22146/jnteti.v10i3.1142

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Maximum output from the operation of solar cell depends on the temperature of the solar cell, solar radiation, wind speed, the state of the earth's atmosphere, the orientation of the solar cell and the position of the location of the solar cell against the sun (tilt angle). Solar Tracker is a device that automatically change the orientation of a solar panel towards the position of the sun and increasing the insolation. Initially the solar tracker is set up using LDR then image processing-based settings can reduce tracking errors. Image-based solar tracker still uses a full-sized computer that requires a lot of energy and space. This research aims to improve the accuracy of the direction of the solar panel and optimize the output of the solar panel by increasing the angle of solar radiation (insolation) using the Solar Tracker with a camera sensor and a Raspberry Pi minicomputer. The use of cameras is intended to reduce errors from LDR-based systems and the use of Raspberry Pi replaces full-sized computer. The method to track position of the sun is by tracking the pixel with highest value. From the output analysis the solar panel proved to be optimized by the application of Raspberry Pi-integrated camera solar tracker. The comparison of the output power between the stationary solar panel and the solar panel installed on the Raspberry Pi-integrated camera solar tracker is 1: 1,389 (21,5487W: 29,8822W) in the no-load test and 1: 1,2042 (6,0344W: 7, 2671W) in tests with a 12V-5W bulb load.
Peningkatan Kompetensi Siswa dalam Pengelolaan Proyek dengan Pemanfaatan Software Bantu Smartsheet di SMK Pembangunan Mranggen Demak Agus Suryanto; Anan Nugroho; Uswatun Hasanah; Najma Aulia
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.6069

Abstract

Kebutuhan yang sangat utama didalam memasuki era digitalisasi adalah mempersiapkan lulusan siswa membekali diri memiliki kemampuan skill digital diantaranya penguasaan lulusan SMK dalam mengelola suatu Proyek di lapangan nanti, Siswa dituntut memahami dan memiliki kemampuan pengelolaan proyek dengan berbantuan Software pengeloloaan suatu Proyek Pekerjaan. Permasalahan di lapangan akan ditemui oleh lulusan SMK, jika dalam melakukan pengelolaan Proyek masih melakukan mekansisme tanpa memanfaatkan Software bantu dalam melaksanakan Proyek tersebut. Software bantu yang dapat digunakan dalam pengelolaan suatu Proyek adalah Smartsheet dalam merencankan proyek dan mengevaluasi Proyek Kegiatan ini bertujuan, : 1) Siswa mengenal penggunaan aplikasi komputer dalam hal ini Smartsheet sebagai software bantu dalam pengelolaan suatu Proyek, 2) Siswa mampu menggunakan software Smartsheet secara mudah dan tepat untuk pengelolaan pekerjaan berbasis Proyek, 3) Siswa mampu menggunakan Software bantu Smartsheet sebagai alat bantu untuk memecahkan masalah dalam mengambil keputusan untuk perencanaan proyek pekerjaan. Metode pelaksanaan kegiatan Pengabdian berupa adalah Memberikan pelatihan dan peningkatan kemampuan siswa SMK Pembangunan Mranggen Demak dalam penggunakan aplikasi. Metode yang akan dilaksanakan dalam kegiatan ini adalah metode Workshop praktikum di labortatorium Komputer SMK Pembangunan Mranggen Demak. Luaran Kegiatan Pengabdian ini berupa Publikasi di Jurnal Nasional ber ISSN dan pemberitaan di Media Cetak atau Elektronik.
A Skema Numerik Nonstandar untuk Model Predator-prey dengan Kanibalisme dan Perlindungan pada Predator Rayungsari, Maya; Suryanto, Agus; Kusumawinahyu, W. M.; Darti, Isnani
Communication in Biomathematical Sciences Vol. 6 No. 1 (2023)
Publisher : The Indonesian Bio-Mathematical Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/cbms.2023.6.1.2

Abstract

In this study, we implement a Nonstandard Finite Difference (NSFD) scheme for a predator-prey model involving cannibalism and refuge in predator. The scheme which is considered as a discrete dynamical system is analyzed. The performed analysis includes the determination of equilibrium point and its local stability. The system has four equilibrium points, namely the origin, the prey extinction point, the predator extinction point, and the coexistence point, which have exactly the same form and existence conditions as those in continuous system. The local stability of each first three equilibrium points is consistent with the one in continuous system. The stability of the coexistence point depends on the integration time step size. Nevertheless, the NSFD scheme allows us to choose the integration time step size for the solution to converge to a feasible point more flexible than the Euler and 4th order Runge-Kutta schemes. These are shown via numerical simulations.
Comparison of Fractional-Order Monkeypox Model with Singular and Non-Singular Kernels Musafir, Raqqasyi Rahmatullah; Suryanto, Agus; Darti, Isnani; Trisilowati, Trisilowati
Jambura Journal of Biomathematics (JJBM) Volume 5, Issue 1: June 2024
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjbm.v5i1.24920

Abstract

The singularity of the kernel of the Caputo fractional derivative has become an issue, leading many researchers to consider the Atangana-Baleanu-Caputo (ABC) fractional derivative in epidemic models where the kernel is non-singular. In this context, the objective of this study is to compare the calibration and forecasting performance of fractional-order monkeypox models with singular and nonsingular kernels, represented by the model with respect to the Caputo operator and the ABC operator, respectively. We have proposed a monkeypox epidemic model with respect to the ABC operator (MPXABC), where the model with respect to the Caputo derivative (MPXC) has been proposed in previous research. We have analyzed the existence and uniqueness of the solution. Three equilibrium points of the model are endemic, human endemic, and monkeypox-free, and their global stability has been investigated. The global dynamics of the MPXABC are the same as those of the MPXC. In evaluating the performance, we collected secondary data on weekly monkeypox cases from June 1 to November 23, 2022, in the USA. Parameter estimation has been performed using the least squares method, while the solutions of the model have been determined numerically using a predictor-corrector scheme. The benchmark for performance has been determined based on the root mean square error. Data calibration and forecasting indicate that the MPXC generally has the best performance for each value of the derivative order. For certain values of derivative order, the MPXABC performs better than the corresponding firstorder model. However, generally, the corresponding first-order model performs better than the MPXABC. Depending on the data trends and the specified orders, the MPXC outperforms the MPXABC. Thus, the singularity issue of the Caputo derivative does not always have a negative impact on model fitting to data.
The Dynamics of a Predator-Prey Model Involving Disease Spread In Prey and Predator Cannibalism Ah, Nurul Imamah; Kusumawinahyu, Wuryansari Muharini; Suryanto, Agus; Trisilowati, Trisilowati
Jambura Journal of Biomathematics (JJBM) Volume 4, Issue 2: December 2023
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjbm.v4i2.21495

Abstract

In this article, dynamics of predator prey model with infection spread in prey and cannibalism in predator is analyzed. The model has three populations, namely susceptible prey, infected prey, and predator. It is assumed that there is no migration in both prey and predator populations. The dynamical analysis shows that the model has six equilibria, namely the trivial equilibrium point, the prey extinction point, the disease free and predator extinction equilibrium point, the disease-free equilibrium point, the predator extinction equilibrium point, and the coexistence equilibrium point. The first equilibrium is unstable, and the other equilibria conditionally local asymptotically stable. The positivity and boundedness of the solution are also shown. The analytical result is supported by numerical simulation. It is shown that in such a high cannibalization the coexistence equilibrium is locally asymptotically stable.
Factors Influencing the Delay in Negative Conversion of PCR Swab Test Results in Patients with COVID-19: Factors Influencing the Delay in Negative Conversion of PCR Swab Test Results in Patients with COVID-19 Nurkholis, Fathur; Hanang Wibisono, Banteng; Suryanto, Agus; Handoyo, Thomas; Farida, Farida; Tanamas, Jimmy
Medica Hospitalia : Journal of Clinical Medicine Vol. 9 No. 2 (2022): Med Hosp
Publisher : RSUP Dr. Kariadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (269.755 KB) | DOI: 10.36408/mhjcm.v9i2.755

Abstract

Background : The negative conversion duration of SARS-CoV-2 RNA was related to disease progression, and a prolonged negative conversion could provide early warning signal for poor prognosis in patients with COVID-19. The objectives of this study was to identify the factors influencing the delay in negative conversion of PCR swab test results in patients with COVID-19 as a consideration in determining the COVID-19 prevention policy in the community Methods : A retrospective cross-sectional study involving 68 patients diagnosed with COVID-19 that was treated in Dr. Kariadi General Hospital Medical Center Semarang from June 1st to December 30th 2020. Negative conversion was evaluated based on the results of the RT-PCR swab test on day 7, 14 and 21. Results : Mean negative conversion time for all patients was 11.63±5.08 days. Thirty-one factors were evaluated in the initial univariate Cox and Kaplan-Meier analysis. Older age (>59 years), overweight (>25 kg/m2), fever (>38°C), shortness of breath, diabetes mellitus, neutrophilia, hypoalbuminemia, CRP and antiviral treatment showed significant association with negative conversion time. These factors were then included in a multivariate regression analysis. Hypoalbuminemia or albumin level of <3.0 g/dL was found as an independent factor associated with negative conversion time of viral RNA (HR:1.986; 95%CI:1.098–3.594), and hypoalbuminemia was presumed to cause prolonged viral clearance time in patients with COVID-19. Conclusion : The factors influencing the prolong in negative conversion of viral RNA in patients with COVID-19 were older age, overweight, fever, shortness of breath, diabetes mellitus, neutrophilia, hypoalbuminemia, CRP and antiviral treatment. Hypoalbuminemia was an independent predictor for prolonged negative conversion of viral RNA in patients with COVID-19.
Co-Authors A Halim A.A. Ketut Agung Cahyawan W Abrianti, Putri Achmadi, Taofan Ali Addieni, Mulia Addin, Muhammad Faqih Adenita Cynthia Adi Setiawan Affan, Banu Nur Agus Murnomo Anan Nugroho Andy Andy Anggraini Mulwinda Anggraini Mulwinda Apriyanto, Eko Bagus Arfriandi, Arief Arif Budi Prasetya Ashar, Fauzi Asriningati Asriningati Bahrul Maani Cahyo Fajar Adhiningtyas Daffa, Muhammad Abu Damaiyanti, D. R. R. Damaiyanti, D.R.R. Dania Ayu Wulandari Darmoyo Darmoyo Dendy Eta Mirlana Dewi, Nur Afifah Dhidik Prastiyanto Diah Ayu Kusumawati Diah Ayu Kusumawati Djallalluddin Djallalluddin Dyah Erlina Sulistyaningrum Edy Prayitno Eko Supraptono Endang Wuryandini Erviani, Diah Erviani, Diah Fahrurrozy, Mohammad Farida Farida Feddy Setio Pribadi Fikrie Rizqy Juan Bismaditya Friska Rizqi Pratiwi Gestiyana Ayu Kurnia Puteri Girsang, Srimayanti Hanang Wibisono, Banteng Handoyo, Thomas Hari Wibawanto Hasan S. Panigoro Hemida Kusumaningrum Hirlan Hirlan Hudallah, Nur Ibrahim M. H. Sanhoury Ilmam, Hasbi Shidqi Indriyani, Triska Widya Isnani Darti Kartono - Khoiril Anam, Khoiril Khoirudin Fathoni, Khoirudin Khotimah , Khusnul Krisnawati, Vira Hari Kusumaningtyas, Sa'aprita Kusumawinahyu, W. M. Lutfiyana, Lutfiyana M. Harlanu, M. Mario Norman Syah, Mario Norman Matatula, Denis Andre Moh. Amin Mubarok, Ahnan Mudji Santosa Muhammad Akmal Muhammad Luthfi Musafir, Raqqasyi Rahmatullah Najma Aulia Nindra, Daffa Noor Hudallah Noor Ramadhan, Akbar Noor, Arifin Nugraha, Alfikri Raihan Nur Hidayat Nuri Aulya Nurkholis, Fathur Nurul Imamah Octavianti Paramita Pambudi, Muhammad Ario Paramyta Nila Permanasari, Paramyta Nila Pranata, Bayu Ari Pranata, Bayu Ari Purnomo, Anna Silvia R Kartono, R Rahman, Antony Anwari Rahmawati, Anindya Raunica, Elsha Afry Rayungsari, Maya Resmawan Resmawan Riana Defi Mahadji Putri Ridwan, Dzaky Fakhriza Ruslan Abdul Gani Saptariana - Saptriana Suryanto, Saptriana Seftriana Anifa Khusniasari Setio, Pradipa Setyono Yudo Tyasmoro Setyono, Bagus Wahyu Setyowati Pertiwi, Indah Shafakamila, Salsabila Nazla Sitawati Sitawati Sitawati, . Sri Puji Lestari Sri Sartono, Sri Sri Sukamta Syahrul Ramadhan Tanamas, Jimmy Tatyantoro Andrasto Tindriyani, Niswatul Arifah Toto Himawan Trisilowati Trisilowati, Trisilowati Tyary Airivia Udayana, Cicik Ulfah Mediaty Arief Uswatun Hasanah Wardhani, Dyah Ayu Kusuma Warma, Mohammad Perdana Prehatama Putra Wicaksono, Dwi Haryo Wuryasari Muharini Kusumawinahyu Yuniaratri, Riris Yuniaratri, Riris Yusuf, Dedi Yuwono, Amrih