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All Journal International Journal of Electrical and Computer Engineering ASEAN Journal of Systems Engineering MEDIA ELEKTRIKA Majalah Ilmiah Teknologi Elektro TEKNIK Transmisi: Jurnal Ilmiah Teknik Elektro Jurnal Pengembangan Energi Nuklir TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) PROSIDING CSGTEIS 2013 Jurnal Teknologi JURNAL NASIONAL TEKNIK ELEKTRO JTET (Jurnal Teknik Elektro Terapan) JTERA (Jurnal Teknologi Rekayasa) Communications in Science and Technology IJITEE (International Journal of Information Technology and Electrical Engineering) Jurnal Listrik, Instrumentasi, dan Elektronika Terapan Jurnal Nasional Teknik Elektro dan Teknologi Informasi Journal FORTEI-JEERI Majalah Ilmiah Teknologi Elektro

Sarjiya

Departemen Teknik Elektro Dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Author-ID : 2374281

Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

Published : 44 Documents Claim Missing Document

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Pengaruh Hilangnya Kawat Netral pada Penyulang KBL-5 dan KBL-6 Yusuf Susilo Wijoyo; M. Isnaeni B.S; Sarjiya .; Rian Fatah M.
PROSIDING CSGTEIS 2013 CSGTEIS 2013
Publisher : PROSIDING CSGTEIS 2013

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Abstrak—Kondisi jaringan tegangan menengah yang berupa SUTM sangat mungkin mengalami gangguan hubung singkatsatu fase ke tanah (SLG). Pada kasus ini kawat netral sebagai bagian dari pentanahan titik netral memegang peranan penting dalam menentukan besaran arus hubung singkat satu fase ke tanah (SLG). Penyulang KBL-5 dan KBL-6 merupakan daerah dengan kondisi kehilangan kawat netral yang terparah.Penelitian ini meneliti mengenai pengaruh hilangnya kawat netral pada penyulang KBL-5 dan KBL-6 terhadap setting dari ground fault relay (GFR).Kata kunci—kawat netral hilang; SLG; setting GFR; KBL-5; KBL-6

Studi Stabilitas Pemasangan PSS dengan Memanfaatkan Sinyal Global Berbasis PSO pada Sistem Tenaga Multimesin Fajar Prasetia; Sasongko Pramono Hadi; Sarjiya .
JURNAL NASIONAL TEKNIK ELEKTRO Vol 5 No 2: Juli 2016
Publisher : Jurusan Teknik Elektro Universitas Andalas

This paper presents stability a study on multi-machine power system is equipped with PSS based on global signal as a control signal. Filters in PSS structure is designed based on frequency response, whereas the lead-lag parameters optimized by PSO. The performance of design proposed tested on 3-Machine 4-Bus power system that disturb with load increasing. The eigenvalue and participation factor analysis results show that system with PSS based on coordination between local and global signal have a performance such us damping ratio, settling time and overshoot are better than system with PSS based on local signal only.Keywords : Multi-machine, PSS, global signal, PSO, eigenvalue analysis, participation factor, stability.Abstrak—Paper ini menyajikan studi stabilitas pada sistem tenaga multimesin yang dilengkapi dengan PSS berbasis sinyal global sebagai sinyal kendali. Filter dalam struktur PSS dirancang berdasarkan tanggapan frekuensinya, sedangkan parameter lead-lag dioptimisasi dengan PSO. Unjuk kerja dari rancangan ini diuji pada test system 3-Mesin 4-Bus yang diganggu dengan kenaikan beban. Hasil analisis eigenvalue, participation factor dan simulasi domain waktu menunjukkan bahwa sistem dengan PSS berbasis koordinasi antara sinyal lokal dan sinyal global memiliki unjuk kerja berupa rasio redaman, settling time dan overshoot yang lebih baik dari PSS berbasis sinyal lokal saja.Kata Kunci : Multimesin, PSS, sinyal global, PSO, analisis eigenvalue, participation factor, stabilitas.

Optimal Sizing and Placement of Wind-Based Distributed Generation to Minimize Losses Using Flower Pollination Algorithm Dian Budhi Santoso; Sarjiya Sarjiya; Fredi Prima Sakti
JTERA (Jurnal Teknologi Rekayasa) Vol 3, No 2: December 2018
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v3.i2.2018.167-176

Penempatan DG dapat mempengaruhi aliran daya dan tegangan pada bus di sistem distribusi. Oleh karena itu, penempatan DG harus diperhitungkan dan direncanakan secara detail agar dapat bekerja secara optimal. Penempatan DG yang tidak optimal dapat meningkatkan losses pada sistem, sehingga berpengaruh terhadap profil tegangan yang akan menurun. Penempatan dan kapasitas DG yang optimal dapat berpengaruh kepada peningkatan profil tegangan, mengurangi losses, peningkatkan kapasitas distribusi, dan peningkatkan keandalan pada sistem. Beberapa metode optimisasi banyak yang bermunculan mulai dari optimisasi klasikal, pendekatan analitis, sampai yang terbaru yaitu metaheuristik. Salah satu metode optimisasi metaheuristik terbaru adalah Flower Pollination Algorithm (FPA) yang merupakan metode optimisasi yang terinspirasi dari proses penyerbukan bunga. FPA lebih efisien dengan menghasilkan hasil yang lebih baik dan memiliki kecepatan konvergen yang lebih tinggi jika dibandingakan dengan metode metaheuristik lainnya. Pada penelitian ini, FPA digunakan untuk menentukan lokasi dan kapasitas wind-based DG yang optimal dengan single DG dan multi DG untuk meminimalkan rugi-rugi daya pada sistem tes IEEE 33-bus dan meningkatkan profil tegangan. Untuk mengetahui kinerja dari FPA, akan dibandingkan dengan metode optimasi lain. Selain itu, jumlah dan kapasitas wind-based DG yang dipasang pada bus terpilih akan diperhitungkan. Hasil simulasi menunjukkan bahwa metode yang diusulkan telah berhasil dengan baik menentukan lokasi dan kapasitas DG.

Review Perhitungan Biaya Wheeling Yusuf Susilo Wijoyo; Sasongko Pramono Hadi; Sarjiya
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 9 No 1: Februari 2020
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Wheeling is a solution to the complexity of transmission network constructing problem. With the wheeling concept, a power plant owner can deliver electricity to its load without having to construct a transmission network. The owner of the power plant can utilize the transmission network belonging to other entities. The wheeling concept is an interesting thing in terms of increasing current renewable energy penetration. This is due to the construction of the transmission network, which is one of the obstacles in increasing renewable energy penetration. Fairness of wheeling costs is still one important topic. The discussion regarding wheeling costs emphasizes that the costs charged to each party involved can meet the fairness principle, which is in accordance with their respective contributions to the implementation of wheeling. Broadly speaking, research related to wheeling can be grouped into research for developing wheeling cost calculation methods and research for developing wheeling cost allocation methods. The development of the wheeling cost calculation method also includes the development of cost components that can be included in the cost calculation. This study summarizes the discussion of wheeling costs on three aspects, namely calculation methods, cost components, and cost allocation mechanisms.

Evaluasi Keandalan Perencanaan Pembangkit Wilayah Jawa-Bali dengan Mempertimbangkan Ketidakpastian Peramalan Beban Avrin Nur Widiastuti; Sarjiya; Kukuh Arung Pinanditho; Eko Tri Prastyo
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 6 No 2: Mei 2017
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (901.012 KB)

Power system reliability is one of important aspects of power system operation. Lack of capacity in the generation system will affect reliability level of the power system. System evaluation needs to be done to know whether the system is still reliable to supply the load that is projected to increase 8.2% per year. Java-Bali system evaluation planning period 2015-2024 is conducted in this paper. Load forecast uncertainty (LFU) is one of the parameters that needs to be considered when conducting system planning. It is because load tends to be uncertain. This research uses two scenarios: without and with load forecast uncertainty. Reliability indexes LOLE and LOLP are used to evaluate the Java-Bali system. All calculations are based on a program using MATLAB. The result shows that reliability indexes LOLE and LOLP are higher with considering LFU. It means reliability decreases, rather than planning without considering LFU. Moreover, Java-Bali system reliability indexes meet the PLN’s standard value with the best value acquired in 2019.

Unit Commitment dengan Kekangan Keandalan Menggunakan Algoritme Genetika Mempertimbangkan Ketidakpastian Beban Sarjiya; Sasongko Pramono Hadi; Daniar Rizki Wijayanti
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 4: November 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (762.666 KB)

Unit commitment problem is associated with satisfying load demand and minimizing the total operating cost of the generating unit without violation of unit and system constraints. The solution of unit commitment should be reliable which has adequate spinning reserve in order to anticipate the uncertainty issue. This research proposes a method to handle two uncertainty issues, i.e. unit unavailability and load forecast uncertainty. The unit commitment problem is solved by genetic algorithm with priority list approach. The evaluation of spinning reserve capacity is based on probabilistic criterion by incorporating two reliability indices, i.e. loss of load probability (LOLP) and expected unserved energy (EUE). The effectiveness of the proposed method is tested using IEEE Reliability Test System-1996. The simulation results show that the proposed method is capable for solving unit commitment problem at total operational cost of $ 722186.93 and risk index at 0.347% (while EUE 0.01%, LOLP 1% and standard deviation (SD) 5%). The simulation results also demonstrate that several solution of the method have slightly lower cost up to 0.43% than those obtained in benchmark which the solution based on Simulated Annealing method.

Penjadwalan Unit Pembangkit Termal, Sel Surya dan Baterai Menggunakan Metode MIQP Galih Yudhaprawira; Sarjiya
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 3: Agustus 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (391.928 KB)

The use of renewable energy to support the power system operation is a way to reduce the energy dependence from fossil resources. Photo voltage (PV) is one of renewable energy suitable used in tropical area because of the availability of adequate sunlight. One of the problems when PVs are interconnected to thermal generation system is how to determine the committed thermal units to serve the load. In this paper, the unit commitment problems of generation system including PVs and battery are solved using Mixed Integer Quadratic Programming (MIQP). Three simulation scenarios are reported which represent the impact of involving PVs and battery in total operation cost. When PVs are involved in the scheduling, they could reduce the power generated by thermal unit as well as total operation cost. Similarly, when battery units are involved, the battery capability to store and release energy also could reduce total operation cost.

Perancangan PSS dan POD-LQR Menggunakan PSO pada Sistem Tenaga Listrik Bermesin Tunggal dengan TCSC Hatta Imaduddien Wiennetou; Sarjiya
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 2 No 2: Mei 2013
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (386.876 KB)

Nowadays sudden change in load could lead to instability in power system. Power system needs to be protected to prevent loss synchronization. Power system stability could be increased by installing power system stabilizer (PSS) and thyristor controlled series capacitor (TCSC). A TCSC increases power system stability with helps from power oscillation damping (POD). The performances of PSS and POD are depended on its controller structure. In this research, lead-lag two stages was proposed as controller structure of PSS, and proposed controller structure for POD is linear quadratic regulator (LQR). The controller parameters of PSS and POD were designed by using particle swarm optimization (PSO). The dynamic and stability of power system with proposed controllers was investigated in single machine infinite bus (SMIB) with 0.2 pu increment in electrical power as disturbance. The main objective of this study is to investigate the effectiveness of damping function of proposed method in three different loads. The simulation results show that proposed controller could increase power system stability and reliable in different loads.

A Determination of PV and Wind Power Plant Penetration into a Power System: a Case of Java Bali Musthafa Abdur Rosyied; Sarjiya Sarjiya; Lesnanto Multa Putranto; Izzuddin Fathin Azhar; Eko Yudo Pramono
Journal FORTEI-JEERI Vol. 1 No. 1 (2020): FORTEI-JEERI
Publisher : Forum Pendidikan Tinggi Teknik Elektro Indonesia (FORTEI)

PT. PLN (Persero) has planned to develop a new renewable energy which has a minimum energy mix of 23% in 2025 and 31% in 2030. An intermittent renewable energy plant, which is uncontrollable and unpredictable, will begin to be massively used. Associated to the intermittent nature of the of intermittent renewable energy source (IRES), adequate system flexibility is necessary. This study determined the penetration level IRES generating unit using the systems load and existing generating unit ramping rate characteristic, IRES generating unit’s ramping rate and system’s technical minimum load (TML) on the Java Bali System based on the 2017 operation condition. The results showed that the TML value of the operating plant was 12164,69 MW. The ramping up and down capabilities of conventional power plants are 945.04 MW / 30 min and 4006.08 MW / 30 min where ± 5% of penetration of IRES was still applicable for the Java Bali System.

Value of Loss Load Analysis of Java-Bali System Based on Macro Economic Data Christina Purwaningsih; Sarjiya Sarjiya; Yusuf Susilo Wijoyo
Journal FORTEI-JEERI Vol. 1 No. 1 (2020): FORTEI-JEERI
Publisher : Forum Pendidikan Tinggi Teknik Elektro Indonesia (FORTEI)

Industrial and business sectors have big influence to gross domestic product in some regions (GDP). Beside that, GDP is influenced by electricity consumption. That statement is the reason why value of loss load (VOLL) had to be calculated. This research calculates VOLL for getting the value of outage cost, efficiency and productivity industrial and business sector in each Area Pengaturan Beban (APB) and in entire Java-Bali region. VOLL is calculated by macroeconomic analysis because this method has more time efficiency than survey analysis. VOLL forecasting in 2016-2023 are calculated too in this research. After that, the outage cost forecasting in hierarchical level 1 (HL 1) can be gotten if expected energy not supplied (EENS) from HL 1 is calculated. Before EENS calculation is held, analysis of another reliability indices such as loss of load expectation (LOLE) and loss of load probability (LOLP) were calculated. The calculation results show that VOLL in 2017 is 35,100.67 Rp/kWh and EENS in HL 1 is 7.25 MWh. Total outage cost from calculation is 289 million rupiahs.

Co-Authors Abdul Syakur Adlan Bagus Pradana Alan Abdu Robbi Afifi Alfi Bahar Ambar Pertiwiningrum Ambariyanto Ambariyanto Amrisal Kamal Fajri Angga Cahya Putra Avrin Nur Widiastuti Christina Purwaningsih Cuk Supriyadi Ali Nandar Daniar Rizki Wijayanti Diah Yuniarti Dian Budhi Santoso Eko Tri Prastyo Eko Yudo Pramono Fajar Prasetia Fatana, Ahmad Fransisco Danang Wijaya Galih Yudhaprawira Gessa Firman Febrian Hamzah Berahim Hamzah Berahim Hamzah Berahim Haneef Nouval Alannibras Humaidi Hatta Imaduddien Wiennetou Hazel Ariantara Hermawan, Hermawan Husni Rois Ali I Ketut Suada Ika Novia Ika Novia A Indra Triwibowo Izzuddin Fathin Azhar Kukuh Arung Pinanditho Kukuh Daud Pribadi Kurniawan, Jaya Lesnanto Multa Putranto Lukas Joko Dwiatmanto, Lukas Joko Mokhammad Isnaeni Bambang Setyonegoro Muhammad Bhayu Bramantyo Muhammad Rifa'i Putra Sugita Muhammad Yasirroni Musthafa Abdur Rosyied Pinanditho, Kukuh Arung Prabowo, Muhaimin Muchti Prasetia, Fajar Prasetyo, Pandhu Ardi Prastyo, Eko Tri Priambudi Pujihatma Qiangqiang Xie Rian Fatah M. Rizki Firmansyah Setya Budi Rizki Firmansyah Setya Budi Rochmadi Rochmadi Sabhan Kanata Sasongko Pramono Hadi Suhono Suhono T. Haryono T. Haryono - Tri Agung Rohmat Tumiran Wiennetou, Hatta Imaduddien Wijayanti, Daniar Rizki Winarko AP Winasis Winasis Wiwik Handajadi, Wiwik Yassir - Yassir Yassir Yudhaprawira, Galih Yusuf Susilo Wijoyo Zainal Abidin

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