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All Journal International Journal of Electrical and Computer Engineering Mechatronics, Electrical Power, and Vehicular Technology Bulletin of Electrical Engineering and Informatics Jurnal Teknologi Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Nanang Hariyanto
Institut Teknologi Bandung
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Residential load event detection in NILM using robust cepstrum smoothing based method Nur Iksan; Jaka Sembiring; Nanang Hariyanto; Suhono Harso Supangkat
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 2: April 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (754.375 KB) | DOI: 10.11591/ijece.v9i2.pp742-752

Abstract

Event detection has an important role in detecting the switching of the state of the appliance in the residential environment. This paper proposed a robust smoothing method for cepstrum estimation using double smoothing i.e. the cepstrum smoothing and local linear regression method. The main problem is to reduce the variance of the home appliance peak signal. In the first step, the cepstrum smoothing method removed the unnecessary quefrency by applying a rectangular window to the cepstrum of the current signal. In the next step, the local regression smoothing weighted data points to be smoothed using robust least squares regression. The result of this research shows the variance of the peak signal is decreased and has a good performance with better accuracy. In noise enviromment, performance prediction quite good with values greater than 0.6 and relatively stable at values above 0.9 on SNR> 25 for single appliances. Furthermore, in multiple appliances, performance prediction quite good at SNR> 20 and begins to decrease in SNR <20 and SNR> 25.
MENENTUKAN PREDIKSI MARGIN KESTABILAN TEGANGAN SECARA ONLINE DENGAN MENGGUNAKAN PHASOR MEASUREMENT UNIT Levin Halim; Nanang Hariyanto; Muhammad Nurdin
Jurnal Teknologi Vol 11, No 2 (2019): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.11.2.139-148

Abstract

Penelitian ini membahas mengenai penentuan prediksi margin kestabilan tegangan (voltage stability margin - VSM) dengan model regresi berganda yang menguhubungkan sisa daya reaktif dengan margin kestabilan tegangannya. Selain itu, penelitian ini juga membahas mengenai penentuan prediksi margin kestabilan tegangan dengan didasarkan pada pengukuran lokal yang memakai ekivalen thevenin untuk representasi sistem. Data-data yang diperoleh untuk perhitungan baik untuk model regresi berganda maupun prediksi didasarkan pada pengukuran lokal pada implementasinya akan diambil dari data phasor measurement unit (PMU) yang menyediakan fasor tegangan dan arus.
Pengaruh Strategi Pengisian Daya Terhadap Kenaikan Beban Puncak Akibat Penetrasi Kendaraan Listrik Boy Ihsan; Deny Hamdani; Nanang Hariyanto
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 9 No 3: Agustus 2020
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1223.334 KB) | DOI: 10.22146/.v9i3.363

Abstract

To overcome the problem of energy crisis and global warming, many countries in the world are pushing growth in the use of electric vehicles. In the future, the use of electric vehicles in large numbers will also occur in Indonesia and charging electric vehicles will become a new load on the electricity system. One of the effects of electric vehicle penetration is an increase in the system's peak load. Therefore, this study examines how the increase in daily load due to penetration of electric vehicles and how the strategy of electric vehicles charging to reduce the increase in load on one of the electricity systems in Indonesia, namely the Jawa-Bali system. The calculation results show that the Jawa-Bali electrical system is only able to accommodate electric vehicle penetration by 20% if the problem of losses, instability, and line loading are ignored. In the case of 10% penetration of electric vehicles, the peak load of the Jawa-Bali system increased by 5,857 MW. However, by scheduling electric vehicle charging, the increase in peak load can be reduced by 3,232 MW and by using the V2G scheme, the energy supplied by the system generator can be reduced by 20,003 MWh.
Penempatan Phasor Measurement Unit untuk Menentukan Prediksi Margin Kestabilan Tegangan Levin Halim; Nanang Hariyanto; Muhammad Nurdin
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 1: Februari 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1043.486 KB)

Abstract

The development of power system in new transmission and generation facilities has burdened the power system more than before. As a consequence, many power systems are facing voltage problems which will lead to voltage instability. This paper discusses the placement of Phasor Measurement Unit (PMU) which utilizes integer linear programming to determine voltage stability margin (VSM) prediction based on local measurement which using thevenin equivalent to represent the power system. The PMU placement is chosen in such way so that the voltage and current phasor at each bus of the power system is observable. Those obtained voltage and current phasor data then will be utilized to determine the voltage stability margin prediction.
Comparison of photovoltaic nanogrid implementation: a simple reliability model for frontier, remote, and disadvantaged areas Ryandi Ryandi; Kevin Marojahan Banjar-Nahor; Nanang Hariyanto
Bulletin of Electrical Engineering and Informatics Vol 11, No 5: October 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v11i5.3814

Abstract

This paper aims to evaluate the photovoltaic (PV) nanogrid implementation and its risk for a project at a remote location. Unlike the normal approach, this approach is based on a discontinuity project. The main advantage of the model is the simplicity to compute the expected lifetime and display the reliability curve. The reliability is calculated using state space equation and a quantitative approach evaluates the risk of PV nanogrid scenarios based on costs. The MATLAB/Simulink simulates the scenarios including the basic scenario of a PV system that is a PV nanogrid consisting of a PV array and inverter, scenario 1 that is a PV nanogrid with a battery system, scenario 2 is an extension of scenario 1 with a battery repair, and scenario 3 is a PV nanogrid connected to the grid. The result indicates that adding a battery system increases the reliability and the expected lifetime of the system, and the battery system’s maintenance makes it higher. Scenario 3 shows high reliability and a longer expected lifetime. The risk matrix shows the position of reliability and its impact on each scenario. This work can be used in practice as an objective assessment to electrify frontier, remote, and disadvantaged (3T) areas beside levelized cost of energy (LCOE).
Quasi-dynamic hosting capacity in radial distribution feeder Riki Khomarudin; Kevin Marojahan Banjar-Nahor; Nanang Hariyanto
Journal of Mechatronics, Electrical Power, and Vehicular Technology Vol 14, No 1 (2023)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/j.mev.2023.v14.62-71

Abstract

The target of massive installation of renewable energy is the focus of this research. Several industrial sectors continue to install photovoltaic rooftop to support green energy. One of the main objectives of this research is to see the maximum impact of installing a photovoltaic rooftop at 1 point of customer and spread capacity for each customer. This research uses a radial distribution network system that closely resembles the distribution network in Indonesia, where the load profile considers the load characteristics of industrial, commercial, and residential loads. This study uses the line equation theorem method to calculate the voltage rises by considering two current measurement points: the current at the end and the current at the base. The obtained voltage rise is then accumulated to be summed up with the customer afterward. The results are obtained by considering three scenarios: 1) voltage limits, 2) voltage limits and line loading, and 3) voltage limits, thermal, and harmonics in accordance with regulations. The obtained results are closely aligned with the simulations performed on the hosting capacity software such as DIgSILENT.
Co-Authors Boy Ihsan Deny Hamdani Jaka Sembiring Kevin Marojahan Banjar-Nahor Levin Halim Muhammad Nurdin Nur Iksan Riki Khomarudin Ryandi Ryandi Suhono Harso Supangkat