1,720,976 research outputs found
SISTEM PEMBUMIAN GARDU INDUK HEMAT ELETRODA
Full text linkThe grounding resistance can be determined when planning grounding system. Grounding resistance will bedepended on the length of electrodes and the low resistance will effect the mesh voltage. This study aims to determinedgrounding systems is used a minimum electrodes at a level of security that is closed to the same. Is this study as asampel is Tallo Makassar substation with size 53 cm x 39m and the soil resistivity 100 ohm.m. Calcullation is done bysimple regression with the grid, grid-rod and grid unequally spaced systems and this result analized by quantitative andqualitative methods. The results of the calcullation and analysis obtained are that the order of the grounding system thesaves or minimm the electrode is : a). Grid uneqully spaced, 463 volts mesh voltage with 722 m electrode length b). gridsystem 522 vlts mesh voltage with 1422 m electrode length and c) grid-rod system 461 volts mesh voltages with 1578 melectrode length
PENINGKATAN EFISIENSI PENGISIAN BATERAI PEMBANGKIT LISTRIK TENAGA SURYA
Full text linkPENINGKATAN EFISIENSI PENGISIAN BATERAI PEMBANGKIT LISTRIK TENAGASURY
PEMILIHAN SOLAR CHARGE CONTROLLER (SCC) PEMBANGKIT LISTRIK TENAGA SURYA
Full text linkPEMILIHAN SOLAR CHARGE CONTROLLER (SCC) PEMBANGKIT LISTRIK TENAGA SURY
ANALISIS PERBANDINGAN PENERAPAN SISTEM GRID-ROD DAN GRID TAK SIMETRI PADA PEMBUMIAN GARDU INDUK
Full text linkThe grid-rod system has been widely used in grounding substation, while the grid unequally spaced known in the 90s .This reseach aims to determine the mesh voltage of both systems when there is ground fault. In addition to determiningthe length of the required electrode at the same mesh voltage. In this research used secondary data that the soilresistivity 37.5 ohm-m, and the substation has a size 42m x 40m . This data is obtained at the unit induk pembangunanxiii Makassar. Calculations are done by simple regression and the results are analized by quantitative and qualitativemethod. (5)The result of the research concluded that : i). the grid-rod system obtained 455.4 volt mesh voltage and 1232meter electrode length with 6 meter parallel conductor spacing, ii). For the grid unequally spaced obtained mesh voltage463 volt, With a 656 m length electrode. iii). When the unequally spaced grid is used, an electrode saving of 45 % isobtained at the same level security, when using a grid-rod system
OPTIMALISASI HIBRIDPLTS PLN PADAWAKTU BEBAN PUNCAK
Full text linkThe peak load is due to the electric power consumption in Indonesia in general is the dominance of householdcustomers, who at the same time use electricity for lighting, watching TV, the use of air conditioning, cooking and otheractivities. From the daily load curve of PT. PLN shows a large trend of difference between the lowest load and the peakphase, meaning that at certain hours or outside the peak load time the plant is not operating and when peak load isoperated. Therefore, investment cost is needed for the provision of power plant only to serve the peak load. To minimizethe use of electrical energy generated by PT. PLN at peak load time is needed replacement energy source, and in thisresearch is designed and implemented solar cell utilization to change source PT. PLN at peak load time for powerinstalled 900 VA. This research is a research development that has been done the previous year, that is the developmentof transfer control from PLN to PLTS at 17.00 and transfer from PLTS to PLN at 22.00 hours. The part that developedin this research is the source of supply for control using 2 source that is from PLN and PLTS, so that manual andautomatic control is not disturbed if one source off or disturb system. In addition to the development of controls alsodeveloped capacity PLTS system to be optimized its use at peak load time. By that it is necessary to use electricalenergy at peak load time, the measurement results for a week obtained 2800 Wh which is the highest usage and thisbecomes the basis for designing the PLTS to be used. The installed panel capacity can supply loads at peak load times of50.82% and the capacity of the electric storage battery can supply the load at the peak load time of 82.30%
OPTIMALISASI PENGONTROLAN PENGISIAN BATERAI HIBRID PLTS-PLN PADA WAKTU BEBAN PUNCAK
Full text linkThe daily load curve of PT. PLN shows the tendency of a large difference between the peak load time load(WBP) and the outer peak load time (LWBP). So that the plants that are ready to operate are needed to service changes inload from LWBP conditions to WBP. To reduce electricity consumption by customers of PT. PLN in WBP requires asubstitute electrical energy source. This study designs and implements the use of Solar Power Plants (PLTS) to replacethe source of PT. PLN on WBP. The PLN source will supply the load at the time of the Peak Load Time (LWBP), whichis 22.00-17.00 WITA, while the PLTS source is designed to supply the Peak Load Time Load (WBP) at 17.00-22.00WITA. Transfer from PLN to PLTS or vice versa is automatically controlled. PLTS during the day will store electricalenergy into batteries that are controlled with the Solar Charge Controller (CCR). The choice of SCC is important becausethis section controls the charging of the battery from the power source produced by the solar panel. Optimization of SCCcontrol can be done by choosing SCC that has better filling characteristics. This study tested 3 PWM type SCCs to seethe filling characteristics and the results of SCC with S Series brands are the best compared to OEM brands and Y-Solarbrands
PENGARUH BATTERY MANAGEMENT SYSTEM (BMS) PADA PENGISIAN BATERAI LITHIUM SISTEM PLTS
Full text linkPENGARUH BATTERY MANAGEMENT SYSTEM (BMS) PADA PENGISIAN BATERAI LITHIUM SISTEM PLT
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
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