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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Lontar Komputer: Jurnal Ilmiah Teknologi Informasi International Journal of Renewable Energy Development Mechatronics, Electrical Power, and Vehicular Technology Jurnal Teknik ITS IPTEK The Journal of Engineering IPTEK The Journal for Technology and Science TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Bulletin of Electrical Engineering and Informatics Eksergi: Chemical Engineering Journal Seminar Nasional Teknik Kimia Kejuangan Seminar Nasional Informatika (SEMNASIF) Dinar: Jurnal Ekonomi dan Keuangan Islam Jurnal Ilmiah Teknik Industri Bulletin of Electrical Engineering and Informatics Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Jurnal Biodjati Jurnal Desain Interior PEDAGOGIA Indonesian Journal of Chemistry Jurnal Purifikasi JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) SANITAS: Jurnal Teknologi dan Seni Kesehatan Jurnal Eduscience (JES) ASEAN Journal of Chemical Engineering Indonesian Journal of Electrical Engineering and Computer Science Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Journal of Electrical Vocational Education and Technology JAREE (Journal on Advanced Research in Electrical Engineering) Jurnal Teknik Kimia Indonesia Jurnal Nasional Teknik Elektro dan Teknologi Informasi Journal of Educational Sciences Sewagati Jurnal Ilmu Pendidikan dan Pembelajaran Jurnal INFOTEL
Adi Soeprijanto
Department Of Chemical Engineering, Institut Teknologi Sepuluh Nopember
Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Power-Flow Development Based on the Modified Backward-Forward for Voltage Profile Improvement of Distribution System Suyanto Suyanto; Citra Rahmadhani; Ontoseno Penangsang; Adi Soeprijanto
International Journal of Electrical and Computer Engineering (IJECE) Vol 6, No 5: October 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.169 KB) | DOI: 10.11591/ijece.v6i5.pp2005-2014

Abstract

Unbalanced three-phase radial distribution system has a complex problem in power system. It has many branches and it is sometimes voltage profile’s not stable at every end branches. For improvement of voltage profile, it can be performed by penetrating of a distributed generation models. Information of voltage profile can be gained by study of power flow.  The Modified Backward-Forward is one of the most widely used methods of development of power flow and has been extensively used for voltage profile analysis. In this paper, a study of power flow based on the Modified Backward-Forward method was used to capture the complexities of unbalanced three phase radial distribution system in the 20 kV distribution network in North Surabaya city, East Java, Indonesia within considering distributed generation models. In summary, for the informants in this study, the Modified Backward-Forward method has had quickly convergence and it’s just needed 3 to 5 iteration of power flow simulation which’s compared to other power flow development methods. Distributed Generation models in the modified the modified 34 BUS IEEE system and 20 kV distribution network has gained voltage profile value on limited range. One of the more significant findings to emerge from this development is that the Modified Backward-Forward method has average of error voltage about 0.0017 % to 0.1749%.
High Performance Maximum Power Point Tracking on Wind Energy Conversion System Dwiana Hendrawati; Adi Soeprijanto; Mochamad Ashari
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 8, No 3: September 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v8.i3.pp1359-1367

Abstract

This paper presents the maximum power point tracking (MPPT) to extract the power of wind energy conversion system (WECS) using the Firefly Algorithm (FA) algorithm. This paper aims to present the FA as one of the accurate algorithms in MPPT techniques. Recently, researchers tend to apply the MPPT digital technique with the P n O algorithm to track MPP. On the other hand, this Paper implements the FA included in the digital classification to improve the performance of the MPPT technique. Therefore, the FA tracking results are verified with P n O to show the accuracy of the MPPT algorithm. The results obtained show that performance is higher when using the FA algorithm
Combining Parameters of Fuel and Greenhouse Gas Costs as Single Objective Function for Optimization of Power Flow Ignatius Riyadi Mardiyanto; Hermagasantos Zein; Adi Soeprijanto
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 15, No 4: December 2017
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v15i4.5769

Abstract

The Kyoto Protocol is a protocol that highlights on greenhouse gases that have been adopted by many countries. Based on this protocol, power plants that produce emissions are encouraged to pay compensation. Conventionally, optimization of fuel mix in the electric power system components has not involved emission charges on the electricity system. This paper proposes a single objective function of amathematical model for the calculation of power flow optimization involving greenhouse gas emissions costs to the fuel cost function. The single objective function derived using the mathematical model approach with linear heat rate function, in order to get the relationship between the fuel cost function with GHG emission. Namely, the function of energy costs as a combination of fuel costs and GHG emission costs can be shown as a quadratic function.
Modeling And Control Of Excitation And Governor Based On Particle Swarm Optimization For Micro Hydro Power Plant Muhamad Haddin; Soebagio Soebagio; Adi Soeprijanto; Mauridhi Hery Purnomo
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 11, No 2: June 2013
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v11i2.929

Abstract

This paper presents the modeling and control of the excitation system via the automatic voltage regulator (AVR) and governor system through the automatic generation control (AGC) or frequency load control (FLC) to improve stability on a micro hydro power plant (MHPP). Three main parts of the generation system are synchronous generator, AVR-excitation, AGC modelled linearly. Generator is modelled by a single machine connected to infinite bus (SMIB) which is equipped by AVR and excitation linear model. Excitation control system made by optimizing the gain of the AVR (KA) and the governor with the gain of the AGC (Ki). Optimization is done using the method improved particle swarm optimization (IPSO). The main purpose of setting the gain of the AVR-AGC is to stabilize the oscillation frequency of the MHPP which is connected to an infinite bus. Simulations are conducted by inputting step function with 5% load fluctuations as a representation of dynamic load. The simulation results show that the proposed method effectively raises the level  of electromechanical damping oscillations the SMIB by generating the comprehensive damping index (CDI) is minimum. 
Power Quality Analysis of Integration Photovoltaic Generator to Three Phase Grid under Variable Solar Irradiance Level Amirullah Amirullah; Ontoseno Penangsang; Adi Soeprijanto
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 14, No 1: March 2016
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v14i1.3298

Abstract

Objective of research is to analyze the influence of solar irradiance and integration of  photovoltaic (PV) generator to power quality of three phase grid on the constant temperature and load, based on changes in some level of integration of  PV generator. Power quality aspects studied are fluctuation or changing, and harmonics of voltage and current on eight scenarios PV generator connected to three-phase grid, using passive filter circuit model double band pass (double tuned). Research shows that voltage and current values on the PCC bus before use double tuned passive filter on the condition only connect single generator is still stable. However, if the PV generator connected to the three phase grid, amounted to more than one generation, voltage and current grid becomes unstable (fluctuation). At the level of solar radiation remains, the greater number of PV generators connected to the grid three-phase, then the values of voltage and current THD increases. At the level of solar irradiance increases, average THD of voltage and current grid also increased. Avarage THD of voltage and current grid is reduced after double tuned passive filter installed. Therefore, double tuned passive filter able to improve profile of voltage and current THD grid as a result of the integration of a number of PV power generators in three-phase grid according IEEE Standard 519-1992. Simulation and analysis of this research use Matlab/Simulink. 
Optimal Placement and Sizing of Thyristor-controlled-series-capacitor using Gravitational Search Algorithm Purwoharjono Purwoharjono; Muhammad Abdillah; Ontoseno Penangsang; Adi Soeprijanto
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 10, No 4: December 2012
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v10i4.857

Abstract

This paper represents the Gravitational Search Algorithm (GSA) that can be used to determine the optimal location and rating of Thyristor controlled Series Capacitor (TCSC). TCSC is equipment used to regulate and improve power flow in power system. The method used in this study was GSA. TCSC were the implemented on 500kV Java-Bali Power System. Loadflow results before optimization using Newton Rapshon method showed that active power loss was 297.607MW. While loadflow results after optimization using GSA with 5-TCSC obtained were 287.926MW of active power loss, with 10-TCSC, it was obtained 281.143MW of active power loss. In addition, using 15-TCSC, active power loss obtained was 279.405MW. GSA methods can be used to minimize power losses and transmission lines as well as to improve value of voltage in the range of 0.95+ 1.05pu compared with loadflow results before optimization.The more TCSC is used, then value of active power losses small.
Transient Power Quality Performance of Multi Photovoltaics using MPPT P and O/MPPT Fuzzy Amirullah Amirullah; Agus Kiswantono; Ontoseno Penangsang; Adi Soeprijanto
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 6: December 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i6.9897

Abstract

This paper presents comparative performance of transient power quality due to multi photovoltaic (PV) integration to grid at both fixed temperature and solar irradiation connected using Maximum Power Point Tracking Perturb and Observe (MPPT P and O)/MPPT Fuzzy. This research is performed as five transient of short-circuit faults on point common coupling (PCC) bus. An artificial intelligence with fuzzy logic controller (FLC) is used to set duty cycle with step variable to control DC/DC boost converter, generate quick convergence to determine MPPT for controlling of PV output voltage. Furthermore the result is compared with MPPT P and O. During transient phase, non-symmetrical faults are able to result an unbalance current/voltage greater than symmetrical faults. On symmetrical faults, MPPT Fuzzy is able to resultan average THD voltage/THD current smaller than MPPT P and O. Otherwise on non-symmetrical faults, MPPT P and O is able to resultan average THD voltage/THD current slightly smaller than MPPT Fuzzy. Both of MPPT P and O and MPPT Fuzzy on all short circuit faults during transient phase are able to result significantly smaller current average THD current than average THD voltage and limits of THD prescribed in IEEE 519. This research is simulated using Matlab/Simulink environment.
Optimal Expenditure and Benefit Cost Based Location, Size and Type of DGs in Microgrids Systems Using Adaptive Real Coded Genetic Algorithm Umar Umar; Firdaus Firdaus; Adi Soeprijanto; Ontoseno Penangsang
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 1: February 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i1.6761

Abstract

The economic issue is an essential element to determine whether DG should be installed or not. This work presents the economical approach for multi-type DGs placement in microgrid systems with more comprehensive overview from DG’s owner perspective. Adaptive Real Coded GA (ARC-GA) with replacement process is developed to determine the location, type, and rating of DGs so as the maximum profit is achieved. The objectives of this paper are maximizing benefit cost and minimizing expenditure cost. All objectives are optimized while maintaining the bus voltage at the acceptable range and the DGs penetration levels are below of the DGs capacities.The proposed method is applied on the 33 bus microgrids systems using conventional and renewable DG technology, namely Photovoltaic (PV), Wind Turbine (WT), Micro Turbine (MT) and Gas Turbine (GT). The simulation results show the effectiveness of the proposed approach.
Steady-State Stability Assessment Using Neural Network Based on Network Equivalent Indar Chaerah Gunadin; Muhammad Abdillah; Adi Soeprijanto; Ontoseno Penangsang
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 9, No 3: December 2011
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v9i3.731

Abstract

Power systems in all over the world have increased in size and complexity due to rapid growth of widespread interconnection. This situation will make power system operated closer to steady-state stability limit (SSSL) resulting in higher probability voltage instability or voltage collapse. This paper presents SSSL assessment in power system using Artificial Neural Network (ANN) model based on REI-Dimo method. The equivalent REI-Dimo is used to determine SSSL index of the power systems. Then, the result of REI-Dimo will be taught on ANN method via online. Studies were carried out on a Java-Bali 500kV system. The simulation showed that the proposed method could accurately predict the proximity to SSSL in power system. The method was computationally efficient and suitable for online monitoring of steady-state stability condition in the power systems.
Gabor-based Face Recognition with Illumination Variation using Subspace-Linear Discriminant Analysis Hendra Kusuma; Wirawan Wirawan; Adi Soeprijanto
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 10, No 1: March 2012
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v10i1.767

Abstract

            Face recognition has been an active research topic in the past few decades due to its potential applications. Accurate face recognition is still a difficult task, especially in the case that illumination is unconstrained. This paper presents an efficient method for the recognition of faces with different illumination by using Gabor features, which are extracted by using log-Gabor filters of six orientations and four scales. By Using sliding window algorithm, these features are extracted at image block-regions. Extracted features are passed to the principal component analysis (PCA) and then to linear discriminant analysis (LDA). For development and testing we used facial images from the Yale-B databases. The proposed method achieved 86–100 % rank 1 recognition rate.
Co-Authors Achmad Arifin Achmad Dwitama Karisma Achmad Elsony Achmad Ferdiansyah Adani, Muhammad Afaf Adelhard Beni Reihara Ady Prima A Adyatmoko Wirananto Afan Hamzah, Afan Agung Subyakto Agus Kiswantono Agus Surono Agustiani, Elly Aip Badrujaman Aisha, Nurul Ali Altway Alif Adi Kaisar Alif Adi Kaisar Alifia, Luluk Altway, Saidah Amirullah Amirullah Amirullah Amirullah Anara, Siti Alicia Andhika, Adi Andita Noor Shafira Anfi Reynikha Fatullah Anfi Reynikha Fatullah Aparamarta, Hakun Wirawasista Ardyono Priyadi Arief Abdurrakhman, Arief Ariefin, Dayu Adestamy Arif Wahjudi Arifin, Achmad Arino Anzip Aryani, Ni Ketut Asrori, Mohamad Fakhri Awaluddin Tjalla Azis, Ahmad Rifky Baiq Firyal Salsabilla Safitri Bima Mustaqim Budi Setiawan Budi Setiawan Budiman, Fajar Christina Tio Trisnasari Citra Rahmadhani Danawati Hari Danawati Hari Prajitno Danawati Hari Prajitno Daniar Fahmi, Daniar Daryanto Daryanto Dheny Ashari Hasan Dimas Anton Asfani Dimas Fajar U.P. Dimas Fajar Uman Putra Dinal Izzati Dinny Harnani Dinny Harnani Dwiana Hendrawati Dyah Firdha Amalia Dyah Firdha Amalia Eko Sulistyowati Ema Umilia Enny Zulaika Ervina Rosanita Rohmah Fajar Arif Widodo Fajar Budiman, Fajar Fauzan Nusyura Fauziah Fauziah Findi Kusuma Wardani Firdaus Firdaus Firdaus, Aji Akbar Fredy Kurniawan Gilang Hari Pratomo Giorgio Rendra Gumelar Gunadin, Indar Chaerah Gurning, Raja Oloan Saut Habibur Rohman Hanny F. Sangian Harits Eka Febrianto Harus Laksana Guntur hasti afianti Herlambang Setiadi Herlambang Setiadi Hermagasantos Zein Hermawan, Yoseph Meidyanto Hertiari Idajati, Hertiari Husna, Aghnina Camilla I Gusti Ngurah Satriyadi Hernanda I Made Ginarsa I Made Yulistya Negara I.D.A.A Warmadewanthi Ignatius Riyadi Mardiyanto Ignatius Riyadi Mardiyanto Imam Abadi Imam Wahyudi Farid Inayah Wulandari Irene Fransisca T Irma Nurhanifah Fenda Putri Ismit Mado Istiqfarin Istiqfarin Iwan Vanany Jangkung Raharjo Januar Adi Perdana Jatayu, Anoraga Johari Johari Juzma Ilmahur Mawaddah K. Brighton Karar Mahmoud Karenina Anisya Pratiwi Karenina Anisya Pratiwi Kemas Robby Firmansyah Kharisma Bani Adam Kusuma, Hendra Siswanto Laila Nur Rahmah Lailatul Qomariyah, Lailatul Lidya Lorenta Sitompul Lilik Fatmawati, Lilik Lily Pudjiastuti, Lily M Yosi Kurniawan M. Ibrahim AH Maharani, Salma Mahendra Wardhana, Mahendra Mahmoud, Karar Maickel Tuegeh Masaji, Marga Mat Syai’in Mauridhi H Purnomo Mauridhi Hery P Mauridhi Hery Purnomo Metika Mega Agata Mikhael Vidi Santoso Moch Revandra Moch. Khoirul Anwar Mochamad Ashari Mochamad Luthfiyansah Mochammad Wahyudi Mochammad Zayyan Difa Fadhillah Mochammad Zayyan Difa Fadhillah Mohamad Dwi Alfaridzi Mohammad Arie Reza Mohammad Herli Muchammad nurif, Muchammad Muhamad Haddin Muhammad Abdillah Muhammad Abdillah Muhammad Abdillah Muhammad Irwan Budianto Muhammad Nurul Hakim Muksin Muksin Mulyadi, Yeyes Muthmainnah, Melania Suweni Muntini Nabila Fara Anindya Nabila Fara Anindya Nanda Dicky Wijayanto Ni Ketut Aryani Ni Ketut Aryani Niniek Fajar Puspita, Niniek Fajar Nurlaili Humaidah Nurlaili Humaidah, Nurlaili Nursalim Nursalim Nurul Maziyah Ocy, Dwi Rismi Ontoseno Penangsang Prima Dana Wisesa Adiwarna Prohantoro, Rudy Pujiantara, Margo Purwoharjono Purwoharjono Purwoharjono Purwoharjono Putra, Dimas Fajar Uman Putri Selly Mudyawati Putri Selly Mudyawati Rachmad Setiawan Rachmaniah, Orchidea Rahman, Nisrina Amatur Rahmawati, Deti Rakhmat Asrie Wibowo N Reihara, Adelhard Beni Rexy Widya Tauchid Rezi Delfianti Rian Pratama Risniyani, Andi Evi Risqy Rohmawati Riyadi Riyadi Riyan Arthur Rizka Winda Novialifiah Rizky Pratama Putra Rizkylillah, Muhammad Sadam Robby, Barikly Rony Seto Wibowo Rony Seto Wibowo Sashi Agustina Sashi Agustina Sayyida Sayyida Selvi Marcellia Septian Dyah Faristi Septiana, Devika Nurlaela Setiawan, Rachmad Seto Dyana Sugeng Sheptian, Riky Sholichah, Wildatus Siti Wulandari Sjamsul Anam Sjarief Widjaja Soebagio Soebagio Subyakto, Agung Sugiyanta, Lipur Suhartono Suhartono Suprapto Suprapto Suprapto Surya Dwi Kisdarmawan Suwito Suwito Suwito Suyanto, Suyanto Tri Widjaja Triastuti, Warlinda Eka Umar Umar Vicky Aditia Tristanto Wirawan Wirawan Wulan Maghfiro Zuchrillah, Daril Ridho Zuchrillah, Daril Ridho