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All Journal ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Indonesian Journal of Electrical Engineering and Computer Science
Dini, Hasna Satya
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Electrical & Electronics Engineering Engineering

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Strategi Penambahan Pembangkit pada Sistem 150 kV melalui Pendekatan Multi Criteria Decision Analysis berbasis Estimasi LOLP DINI, HASNA SATYA; FIKRI, ZUL; SENEN, ADRI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 4: Published October 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i4.1089

Abstract

ABSTRAKKeandalan sistem tenaga listrik sangat penting untuk memenuhi kebutuhan energi masyarakat modern. Pertumbuhan beban tanpa penambahan kapasitas pembangkit dapat menurunkan keandalan yang diukur melalui Loss of Load Probability (LOLP) dan Loss of Load Expectation (LOLE). Perhitungan LOLP menggunakan metode rekursif untuk jumlah unit pembangkit yang kecil karena akurasinya yang tinggi, sementara metode Monte Carlo digunakan untuk sistem lebih besar karena efisiensi dan skalabilitasnya. Penelitian ini menganalisis dampak pertumbuhan beban terhadap keandalan sistem dan strategi ekspansi pembangkit. Metode Multi Criteria Decision Analysis (MCDA) digunakan untuk menentukan pembangkit terbaik berdasarkan kriteria teknologi, keandalan, dan ekonomi. MCDA terbukti efektif karena fleksibel, mudah diterapkan, dan tidak memerlukan perangkat lunak khusus. Studi selama 10 tahun pada sistem 150 kV dengan kapasitas 450 MW dan beban puncak 328,36 MW menunjukkan bahwa penambahan pembangkit dan integrasi Battery Energy Storage System (BESS) berhasil menurunkan LOLP menjadi 0,000096 pada akhir evaluasi.Kata kunci: LOLE, LOLP, MCDA ABSTRACThe reliability of power systems is crucial to meet the energy demands of modern society. Load growth without additional generation capacity can reduce reliability, measured by Loss of Load Probability (LOLP) and Loss of Load Expectation (LOLE). LOLP is calculated using a recursive method for small generation units due to its high accuracy, while the Monte Carlo method is preferred for larger systems because of its efficiency and scalability. This study analyzes the impact of load growth on system reliability and strategies for generation expansion. The Multi Criteria Decision Analysis (MCDA) method was employed to identify the optimal generation options based on technological, reliability, and economic criteria. MCDA proved effective due to its flexibility, ease of application, and independence from specialized software. A 10-year study on a 150 kV system with a capacity of 450 MW and a peak load of 328.36 MW demonstrated that adding generation and integrating a Battery Energy Storage System (BESS) successfully reduced LOLP to 0.000096 by the end of the evaluation.Keywords: LOLE, LOLP, MCDA
Penentuan Kriteria Kapasitas Transformator Berdasarkan Proyeksi Kebutuhan Energi secara Mikrospasial SENEN, ADRI; DINI, HASNA SATYA; ANGGAINI, DWI; PUTERA, PERDANA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 10, No 1: Published January 2022
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v10i1.200

Abstract

ABSTRAKProyeksi energi memiliki peran penting dalam perencanaan pengembangan sistem distribusi listrik. Penelitian ini bertujuan untuk menentukan lokasi, jumlah dan penambahan kapasitas transformator yang diperlukan di area jaringan Tangerang. Metode prakiraan proyeksi energi dilakukan secara mikrospasial dengan membagi area layananan dalam bentuk grid – grid yang kecil (kelurahan). Selanjutnya pengelompokan (clustering) dilakukan berdasar karakteristik geografis, demografi, ekonomi dan kelistrikan wilayah untuk memperkirakan kerapatan beban. Hasil clustering yang terdiri dari 100 kelurahan, terkelompok menjadi 5 cluster dengan pertumbuhan beban per cluster rata-rata sebesar 8,4 %. Hasil perhitungan kapasitas transformator untuk wilayah Tangerang untuk 10 tahun adalah 250 kVA, 630 kVA, 1000 kVA dan 1250 kVA, dengan asumsi pembebanan transformator maksimal 80 %. Disamping itu prakiraan beban pada tingkatan transformator distribusi mengalami penambahan 3.064 unit gardu distribusi.Kata kunci: Prakiraan Beban, Transformator , Micro-spatial, Cluster, Tangerang ABSTRACTEnergy projection has important role in the planning of electricity distribution systems development. This study set out to investigate location, number and capacity of the transformers in Tangerang network area. A microspatial energy projection forecasting method was used by dividing the service area into small grids. Furthermore, clustering is carried out based on geographical, demographic, economic and electrical characteristics of the region to predict the load density. The clustering results consist of 100 grids grouped into 5 clusters with an average load growth 8.4% per cluster. As the result, the transformers capacity for the Tangerang area for the next 10 years are 250 kVA, 630 kVA, 1000 kVA and 1250 kVA, with the assumption that the maximum transformer loading is 80%. In addition, the estimated load at the distribution transformer level has an additional 3,064 distribution substations.Keywords: Load Forecasting, Transformer, Micro-spatial, Cluster, Tangerang
Grid impact analysis on wind power plant interconnection in strengthening electricity systems Senen, Adri; Kurniawan, Arif; Dini, Hasna Satya; Anggaini, Dwi
Indonesian Journal of Electrical Engineering and Computer Science Vol 35, No 1: July 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v35.i1.pp32-41

Abstract

The Timor system is one of the large systems in the East Nusa Tenggara region. Based on the general plan for electricity supply for 2021-2030, there is a plan to interconnect a 2x11 MW wind power plant. The addition of wind power plants will pose a considerable threat to the system due to the intermittency nature of renewable energy plants. Therefore, a comprehensive grid impact study is needed to convince network managers that adding wind farms will not cause disruptions to the system either locally or in general and is expected to strengthen the electricity system. The power flow simulation results, installing a 2x11 MW wind farm on the Timor system can improve voltage quality and reduce losses on both 70 and 150 kV systems. For transient stability, the frequency value on the Timor system still meets the grid code requirements. In addition, the simulation results of the intermittency impact of the wind power plant output show that the Timor system is still in a stable condition. The stability of the rotor angle of the existing power plant when the transient stability simulation is carried out shows that it is still in a balanced condition.
Co-Authors Adri Senen Anggaini, Dwi ARIF KURNIAWAN Fikri, Zul Perdana Putera, Perdana