1,720,959 research outputs found
ENERGY NOT SOLD (ENS) PADA IMPLEMENTASI FAULT DETECTION INSULATION AND RESTORATION (FDIR) PT. PLN DI PENYULANG OGAN GARDU INDUK SEI JUARO
Get PDFAs an effort to carry out sustainability services with efficient distribution of electricity quality, a system that can provide a form of service with reliable distribution system is implemented that can provide an overview of the narrowing of the territory of the extent of the disturbance that is happening. With the application of the Fault Detection Insulation and Restoration (FDIR) system in the feeder with a relatively fast and automatic maneuver process, it can reduce the duration of the outage which can also directly determine the point of disturbance when a disturbance occurs in real time. If there is a disturbance in the Ogan feeder, the FDIR automation system will immediately isolate the network by maneuvering the Kedondong feeder in less than one minute, so that by calculating ENS you can get the benefit of reducing the Energy not sold (ENS) value
RASPBERRY PI PADA SISTEM MONITORING MINI PHOTOVOLTAIC
Get PDFRenewable energy as an alternative source of energy other than fossil fuels is currently increasingly being used, one of which is electrical energy produced through solar cells. A number of new installations in industry and companies, street lighting systems, and applications on a household scale as an effort to balance the use of fossil energy continue to be developed. The use of solar cells is not without reason, especially in the area of Indonesia that gets sun exposure almost all year round considering Indonesia's geographical condition which is right on the equator so that it adds value to the stability and consistency of the energy production produced. By implementing a real-time monitoring system on solar cell panels, users can monitor the resulting voltage data. In this prototype, using multi photovoltaic cells, each with a capacity of 1Wp, using a number of sensors to read the voltage in each cell, and the controller using the Raspberry platform which has a 32-bit processor capability so that it is expected that data processing can be carried out. better and faster than the controller in general. The sensor used to read the current is a voltage sensor with thevenin concept. The other devices consist of a raspberry as the main control system, a Battery Management System (BMS), a rechargeable battery, and an LCD data display. The expected result in this study is that users can monitor the results of electrical energy production in real time through monitoring the LCD display so that solar cell production can be managed more optimally than standard installations in general
ANALISIS KEGAGALAN ISOLASI MINYAK TRANSFORMATOR 27 MVA PLTG 1 JAKABARING BERDASARKAN HASIL UJI DISSOLVED GAS ANALYSIS (DGA)
Get PDFMetode indentifikasi kandungan gas yaitu dengan Dissolved Gas Analysis (DGA) merupakan metode konvensiona luntuk mengidentifikasi kandungan gas yang terlarut dalam minyak trafo. Kita menggunakan Dissolved Gas Analysis (DGA) dengan metode pengukuran transport X guna mendeteksi gangguan pada minyak transformator 27 MVA PLTG 1 Jakabaring. Analisa hasil DGA tes yang dilakukan dalam pengujian mempertimbangkan hasil Total Dissolved Combustible Gas (TDCG), merupakan konsentrasi gas-gas yang terkandung dalam minyaki solasi transformator meliputi gas hidrogen, metana, etana, etilena, asetilena, karbondioksid ada nkarbonmonoksida. IEEE C 57.104:2008 merupakan standard yang digunakan untuk menentukan nilai hasil DGA tes. Hasil pengukuran pertama sebelum dilakukan treatment dan purifier pada minyak trafo menunjukkan keadaan T3 : Thermal Fault > 700oC. Mengacu pada IEC 60599 (2007) kondisi ini merupakan dar iterbentuknya sejumlah besar karbon pada minyak, korosi metal (800°C) atau metal fusion (>1000°C). Setelah dilakukan rekomendasi untuk treatment dan purifier pada minyak transformator 27 MVA PLTG 1 Jakabaring didapatkan hasil pengukuran DGA tes menunjukkan nilai yang norma
PENGEMBANGAN PRODUK PANEL SURYA DENGAN MENGGUNAKAN ANALISIS MORFOLOGI
Get PDFPanel Surya (Pembangkit listrik tenaga surya/PLTS) merupakan sebuah perangkat penyedia tenaga listrik yang dilakukan dengan cara mengubah energi sinar matahari menjadi energi listrik yang dapat dimanfaatkan untuk sistem penerangan baik diperkantoran maupun di rumah tinggal. Dengan memanfaatkan pembangkit surya kita dapat mengurangi pengeluaran tinggi akan listrik. Panel Surya merupakan solusi untuk mengatasi krisis energi listrik, dimana terutama daerah yang belum terjangkau listrik sama sekali bisa memanfaatkan. Penelitian ini bertujuan untuk mendapatkan produk Pembangkit Surya Sebagai Sumber Listrik Rumah Tangga sesuai dengan keinginan konsumen. Penelitian ini dilakukan analisis morfologi didalam pengembangan pembangkit surya dengan inventer DC ke AC. Hasil dari penelitian ini adalah Alternatif spesifikasi pembangkit tenaga surya yang dipilih adalah alternatif dua dengan spesifikasi (1) Output power 20 Wp, (2) Cell type : monocrystaline, (3) Dimensi : 639 x 366 x 26, (4) Max Power (Vpm) : 21,5 dan (5) Berat : 2,6. Tegangan yang dihasilkan oleh panel surya selalu berubah-ubah sesuai dengan perubahan cuaca pada saat pengukuran. Perubahan suhu mempengaruhi tegangan yang dihasilkan oleh panel surya. Tegangan yang dihasilkan oleh panel surya tertinggi yaitu 20,6 Volt dengan suhu 33,50C. Produktivitas alat dilihat dari kemampuan pembangkit tenaga surya dapat menyalakan beban 2 buah lampu dalam kondisi tanpa adanya sinar matahari / mendung selama ± 2 jam dengan total daya 16 Watt
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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