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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 Rekayasa Hijau Jurnal Nasional Teknik Elektro dan Teknologi Informasi

Nanang Hariyanto

Institut Teknologi Bandung

Author-ID : 2385845

Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering

Published : 8 Documents Claim Missing Document

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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

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.

The use of Markov Chain method to determine spare transformer number and location Musa Partahi Marbun; Ngapuli Irmea Sinisuka; Nanang Hariyanto
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 1: February 2019
Publisher : Institute of Advanced Engineering and Science

The purpose of this study is to develop a method to determine spare transformer number and location. Using Markov Chain method, state transition model and steady state probability was used on each 500-kV substation in order to analyze the effect of spare number and location variation with the reliability changes. To give an actual result of the case study, calculation of spare transformer number and location on 500/150 kV transformers in Java Bali System was analyzed. The steady state probability results will vary depending on the number of spare transformer, these results can then be used to assess the spare transformer needed. The variation of spare transformer location can be used to analyze the best possible location of the spare in order to satisfy the reliability required. The methodology presented shows an integrated calculation for determining the spare transformer number and location.

Co-Authors Boy Ihsan Deny Hamdani Halim, Levin Jaka Sembiring Kevin Marojahan Banjar-Nahor Mohamad Ramdan Febriana Herawan Muhammad Nurdin Musa Partahi Marbun Ngapuli Irmea Sinisuka Nur Iksan Riki Khomarudin Ryandi Ryandi Suhono Harso Supangkat

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Journal : International Journal of Electrical and Computer Engineering