bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of electric load forecasting using combined method (Study case 2019 – 2029 in PT. PLN (Persero) UP3 Sukabumi)
Authors: Rahardjo I A , Subekti M , Parjiman P , Rosyanti D 
Published: March 2021

Abstract
The purpose of this study is to find out how much electric load to Sukabumi from 2019 until 2029 at PT. PLN (Persero) UP3 Sukabumi. Forecasting of electrical load using historical data. This research uses a combined method, which is a method compiled by combining several models such as econometrics, analysis, and trends with a sectoral approach, which is an approach by grouping electricity consumers into four sectors, namely the resident, commercial, public, and industrial sectors. The population forecast of Sukabumi in 2019-2029 shows an average growth of 0.36% per year. Gross Regional Domestic Product (GRDP) for resident sector growth of 6.26% per year, commercial sector growth of 6.26% per year, public sector growth of 6.26% per year, and the industrial sector growth of 10.07% per year. The electric customers for the resident sector growth of 5.26%, commercial sector growth of 13.96% per year, public sector growth of 7.58% per year, and industrial sector growth of 3.53% per year. The electric contracted power for the resident sector growth of 5.19% per year, commercial sector growth of 14.96% per year, public sector growth of 7.28% per year, and industrial sector growth of 3.36% per year. Growth of population, GRDP, number of electric customers, and power contracted, as shown in forecasting 2019-2029, will affect to increasing electrical load. The total electrical load will be 1,054.22 MVA in 2019 and 2,043.80 MVA in 2029 or growth of 6.74% per year.
IoT: Improved home energy control system based on consumer
Authors: Radja M , Hungilo G G , Emmanuel G , Suyoto S 
Published: March 2021

Abstract
The merge of urbanization in Indonesia results in a sharp increase in household energy consumption. Energy conservation is a global challenge for both individuals and decision-makers. The increasing household energy consumption is mostly caused by unwanted usage of electrical energy. The purpose of this paper is to design an improved smart home electricity management system based on consumer behaviour, which will help household occupant to control the usage of electricity automatic using sensor and manual using a smartphone. The sensor used in the system are a motion sensor, temperature sensor, sound sensor, and light sensor also wireless technology is used for controlling electricity outside of the home using a smartphone. The proposed system has multiple benefits of saving electricity bill of the house and keep the owner of the house updated about home security with the ability to control the home appliances and reduce electrical energy consumption.
Redesign Gas Insulated Switchgear to Semi Air Insulated Switchgear 500 kV side and 150 kV side in EHVS Kembangan
Authors: Damiri D J , Prasetio T W 
Published: March 2021

Abstract
The main role of 500 kV extra high voltage Gas Insulated Substation in transmission system is serves connection between the electrical generation and transmission system. To improve equipment performance and the quality and reliability of electricity distribution need time to maintain gas insulated line compartment but preparation to maintenance requires a long time, limited maintenance duration and long implementation of gas evacuation. This paper is object to redesign Gas Insulated Switchgear (GIS) to Semi Air Insulated Switchgear (AIS) on 500 kV side and 150 kV side with new design of Gas Insulated Line compartment in order to accelerate maintenance and gas evacuation job. with surveys, observations, analyses and Root Cause Problem Solving (RCPS), it can be seen the initiation of improvement to accelerate the maintenance of IBT and accelerate the repair of anomalies in the gas insulated line. After redesign Gas Insulated Switchgear to Semi Air Insulated Switchgear, this results show maintenance IBT after redesign is 25 hours faster and duration anomaly on GIL after redesign 24 hours faster.
Additional functions of Electric Vehicle on grid as storage support system
Authors: Heningputra D A , Abdullah A G , Hakim D L 
Published: March 2021

Abstract
Indonesian grid electricity can be better with the contribution of electric vehicles (EV). EVs have electrical energy storage, which can store a load or electrical energy in a certain amount. EV already has a good charging system and charging type that requires a short amount of time. The vehicle to grid (V2G) charging system allows EV to be able to charge the battery as usual, and channel the energy in the EV battery to grid. The electricity grid has a system to keep the frequency at a nominal 50 Hz. EV functions in harmony with the connected reserve used in primary frequency regulation. Primary frequency regulation will be active with a frequency of ± 0.06% of the nominal frequency used. Utilization of EV can be used for load levelling in West Java grid load. Load levelling and peak cut threshold with the conditions made to get the smallest calculation amounted to 37.82MWh and 3182.30MW, with these two calculations EV has good potential to help the network.
Rooftop PV business scheme in Jakarta
Authors: Haryadi F , Simaremare A , Indrawan H 
Published: March 2021

Abstract
There is competition in Rooftop PV selling in Jakarta. So, many company wants to sell rooftop PV as much as they can. Here, PLN, conduct a research to know customer profile to understand their characteristic before determining business model scheme. Method used in this research is survey online and offline. The result is business scheme A, where the customer submits a purchase to Haleyora Power with a installment scheme to the Bank with a certain installment period. With this scheme, automatic ownership becomes the property of the customer or consumer. Next is the business scheme B, where a customer can ask for an install in his house by way of rent, but with a note during the rental period, the rooftop PV is owned by PLN, and the customer pays to Haleyora Power at a lower amount than it should, the calculation can use the difference from the use of imports from PLN reduced by kWh income from rooftop PV. In this system, customers are required to subscribe for several years, and if it is less than that, an additional charge will be charged on the electricity bill. Another alternative is the C business scheme, where PLN sets the price of a Rooftop PV LCOE, such as Rp 900 / kWh. Then PLN installed a margin and sold it at Rp. 1200 / kWh which is still significantly below the current price of conventional electricity. With this scheme, ownership of the rooftop PV remains with PLN, so customers will always continue to buy energy output from the rooftop PV at a certain price, and if the energy from the rooftop PV is gone on that day, then the energy sent to the customer comes from grid and normal tariffs from PLN will apply.
Risk based approach for surge arrester replacement
Authors: Purnomoadi A P , Mangunkusumo K G H , Jintaka D R , Tofani K M , Ridwan M 
Published: March 2021

Abstract
Surge arrester is a critical component in tropical countries since the likelihood to have a lightning stroke in the transmission system is higher in comparison to those in sub tropics. Therefore, assuring the reliability of this component is important. However, the surge arresters are sometimes being overlooked during the replacement plan because of its insignificant price in comparison to the protected assets. Transmission utility mostly just install and forget. This paper presents a methodology to replace the High Voltage (HV) and Extra High Voltage (EHV) surge arresters based on the risk of a failure. The condition assessment based on resistive leakage currents and the statistical reliability curve based on lifetime assessment define the likelihood of failure. While the consequences are based Safety, Extra Fuel Cost, Energy Not Served (ENS), Customer Satisfaction, Leadership, and Environmental Impact. The risk is then estimated by multiplying the likelihood of failure and consequences. It can be used to prioritise replacement, particularly when resources (budget, spares, workability) are limited.
The development of environmental knowledge and the use of solar energy using environmental responsibility behavior in Central Java
Authors: Hamiyati H , Subekti M , Rahardjo I A 
Published: March 2021

Abstract
Energy has an essential meaning in life to continue to develop and support economic and environmental activities. Every year energy in Indonesia increases rapidly in line with human growth. To supply energy needs, renewable energy sources must be developed. Renewable energy potentials such as solar energy have never been used on a large scale even though Indonesia has enormous energy potential. Solar energy can be used in the form of solar cells for electricity generation. The utilization of solar cells can help people who live in remote areas far from the electricity network. This research was conducted in Central Java by using descriptive qualitative methods and using research and development (R&D) methods. The technique used is an expressive qualitative analysis technique. The result solution implemented is to meet the increasing electrical energy needs of the community. This research produces renewable energy that can be used as a solution to solving the electrical energy crisis at an affordable cost and can increase the independence of the community so that it does not depend on government electricity supply and improve environmental responsibility behavior.
Electricity and economic valuation of smart grid system on Nusa Penida electricity market
Authors: Ruth E , Nurmela N , Mulyadi Y , Sasmono S 
Published: March 2021

Abstract
Smart Grid Technology is widely applied in various countries to reduce the basic cost of generation electricity in the region. The existing generation on Nusa Penida Island is only used PLTD, that leads the generation cost are relatively higher, with cost generally Rp.1198, 44884/KWh and more high cost for consumers, to overcome the problems of the system is applied a SG technology, by combined PLTD with photovoltaic (PV) penetration as renewable energy generation and battery energy storage system (BESS) on Nusa Penida grid. This study is analyzed the grid impact and economic value from this technology on Bali, with study case of Nusa Penida island. With used SG concept is Renewable Energy, Storage and Micro Grid Development (RESMG) as base concept of this study. By determined the scenario and conducting the calculation LCOE on PV penetration place, then choose the appropriate scenario there found 3 PV penetration site. With 3-PV penetration site, then calculated the LCOE, and the lower cost is Sakti with Level Cost of Electricity (LCOE) Rp. 780,791591/KWh after PV-penetration on GH-Sakti.
Comparison of student learning outcomes that given online learning and conventional learning in electrical measurement course
Authors: Nugroho Y S 
Published: March 2021

Abstract
The purpose of this study is to compare student learning outcomes, given online learning and conventional learning. This study uses a quasi-experimental method; the researcher divides students into two classes, namely the experimental class and the control class. Experimental classes are given online learning, and control classes are given conventional learning or face to face with lecturers. Before starting the learning, all classes are given a pre-test and given a post-test after the learning period ends. It is to determine the initial and final state of students so that the effects of learning can be seen. The pre-test and post-test results show that both classes have increased learning outcomes, but the increase in learning outcomes in the experimental class is higher than the control class. Furthermore, conducting unpaired t-test using SPSS to find out whether there are significant differences between the two classes. From the calculation results, it can be concluded that there is a significant difference between the learning outcomes of Electrical Measurement students who are taught online and students who are taught conventionally so that online learning in the Electrical Measurement course is declared effective.
Design and implementation of pipe cutting machine with AC servo motor and PLC based on HMI
Authors: Syufrijal S , Rif’an M , Prabumenang A W R , Wicaksono R 
Published: March 2021

Abstract
This research aims to design a pipe cutting machine using an AC servo motor and PLC as a controller based on HMI (Human Machine Interface). The use of AC servo motors is done to maintain accuracy and precision in cutting pipe lengths. This research uses experimental methods which include hardware and software design. PLC LS XGT Series is used to control the pipe cutting machine automatically based on the input signal from the proximity and encoder. Proximity is used to detect the presence of pipe while the encoder is used to detect AC servo motor rotation. By knowing the number of turns of the AC servo motor through the encoder, the length of the pipe can also be determined. The AC servo motor with Mitsubishi HC-KFS43 400W models is used to pull the pipe, gripping the pipe, and moving the cutting machine while a modified AC circle saw motor is used to drive the cutting blade. Based on the results of the study, the cutting machine can cut pipes automatically according to the desired number and length of the pipe. The work process can be monitored and controlled on a computer through HMI.
Development of mobile web-based learning model
Authors: Marini A , Safitri D , Herlina H , Umasih U , Rosinar R , Yuliati S R , Putra ZE F F , Zahari M 
Published: March 2021

Abstract
This study aims at developing mobile web-based learning model for elementary school students in Jakarta in Indonesia. The research method was Research and Development (R&D). This research product is mobile web using 8b with URL: https://webpanduan.8b.io. This mobile web containing some pages consisting of home, background, legal basis, objectives, and the guidance of character values integration. The result of expert validation achieved 3,88 from scores ranging 1 to 4 showing that this mobile web was already valid specifically for easiness of the terms used, application efficiency, navigation system, simplicity, clarity of navigation, consistency of navigation menu placement, attractiveness, compatibility support, and loading time. Revision based on expert validation was done to give a more detail explanation about the concrete ways in character values integration, photograph background, slideshow with pause, and relevant pictures displayed. Consequently, it can be concluded that this mobile web-based learning model has already been valid as a model in character values integration for elementary school students in Jakarta in Indonesia.
Effects of growth media compositions for plant growth of Inpari 13 rice (Oryza sativa L.) on substrate hydroponic system
Authors: Hidayat C , Frasetya B , Lestari F A 
Published: March 2021

AbstractRice cultivation using substrate hydroponic system on the building’s rooftop is an alternative way to improve rice production. This research aimed to study the effect of growth media compositions on rice growth with substrate hydroponic system. The experiment used Completely Randomized Block Design with five treatments of growth media composition i.e. 100% rice husk charcoal; 100% cocopeat; 50% rice husk charcoal: 50% cocopeat; 25% rice husk charcoal: 75% cocopeat; and 75% rice husk charcoal: 25% cocopeat. The result showed that composition of 75% rice husk charcoal : 25% cocopeat significantly affected plant height. Otherwise, reformulating nutrient composition for hydroponic rice cultivation supported the growth media to perform better. The addition of NH4+as a source of nitrogen improved plant growth in vegetative stage. In addition, the ratio between K: Ca (1.25: 1) applied to complete requirement of those nutrients and considered as environmental stress defence. The use of a container becomes an alternative to maintain media relative humidity and nutritional EC value. Either in the rainy or dry season, relative humidity and nutrient EC of media must be checked frequently to maintain the optimum conditions for rice growth.
Green areas mapping of Telkom University as a support towards green campus
Authors: Sadono S , Zen A P , Yuningsih C R , Trihanondo D , Wiguna I P 
Published: March 2021

Abstract
Environmental problems are the main thing and great concern given the issue of global warming and climate change is no longer just an issue but has become a fact. That is what makes the concept of green campus where the role of universities to help raise awareness and take part in reducing global warming. Efforts to set up a green campus should not only start with planting trees around the campus area or just protecting the environment by banning smoking or littering. But environmental design is one of the processes in realizing a green campus. Therefore, the first stage of environmental design is made to meet these needs. The purpose of this study is to map the environment within Telkom University campus using the aerial photographic approach like drones to collect visual data and observation as the design process in environmental design. The results obtained in this study are a map of Telkom University and the surrounding environment that can be used as observation data and visual data in developing the campus environment. This mapping is a process and a first stage in the development and design of Telkom University as a green campus. For further developments, campus mapping can be used as a reference in seeing environmental design so that the next process can be determined with visual data on campus mapping.
Study of soil physical properties in UIN Sunan Gunung Djati campus area using geoelectrical resistivity method
Authors: Sholikha M , Agustina R D , Listiawati M , Maspupah M , Chusni M M 
Published: March 2021

Abstract
Study of Soil physical properties are important characteristics of the soil. The description of soil physical properties is very important to investigation the function of the soil as a plant growth medium. The aim of this study was to determine the physical properties of the soil based on geoelectric resistivity data. The study was conducted in UIN Sunan Gunung Djati campus area. The method used in this study was geoelectrical resistivity of wenner configuration method. The results showed the value of resistivity, porosity and soil fraction. Range value of Soil resistivity was 50-800 Om. Soil porosity was 5-50%. The soil fraction component consists of coarse sand, fine sand and clay. Soil resistivity was inversely proportional to soil porosity. The high soil resistivity is likely due to the low soil moisture, causing generally campus area still open. Based on the soil fraction component, soil texture in the campus area tends to be Loam Sandy. It is good for aeration and water holding. This condition is very good for plant growth.
Quality of Cikawung river water based on phytoplankton diversity
Authors: Mulyani L S , Amarulla Y , Wahjuningsih S , Muthmainnah R 
Published: March 2021

Abstract
This research aims to determine the quality of Cikawung river water based on phytoplankton diversity conducted in April-May 2019. This research uses descriptive method, with quantitative approach. The sample taken was 10% of the length of the Cikawung river, which is 5 km divided into 3 stations. The quality of the waters of the Cikawung river can be seen from the diversity index, evenness index and phytoplankton dominance index. The results show that the diversity value is low to moderate. The evenness value is categorized as stable condition. While the dominance index showed as labile condition or under ecology’s pressure. Broadly speaking, the quality of the waters of Cikawung river based on the diversity index is included in the heavily polluted category.
Engineering safer bulk cooking oil by increasing oxidative stability with organic waste of noni (Morinda citrifolia) fruit
Authors: Rahayu S , Basyam S A , Mela F , Solichatun L 
Published: March 2021

Abstract
Cooking oil has brought detrimental impact on health. Many attempts have been conducted to minimize the risk of it. This study aimed at engineering safer bulk cooking oil by increasing oxidative stability with organic waste of noni fruit. Method applied was experimental with complete factorial randomized design. Factor used were solvent type (ethanol and distilled water), concentration (25% and 33%) and maceration time (2,4,6,8,16,24 hours) of noni fruit. Parameters measured were qualitative and quantitative flavonoid, peroxide value and free fatty acid number. Statistical analysis was done by Manova followed by Games-Howell. Result showed that ethanol extract exhibit strongest flavonoid qualitatively and quantitatively within 33% concentration (48.9 Meq). The best (lowest) peroxide value can be identified on ethanol extract under 33% concentration and 24-hour maceration (2.9 ± 0.6 Meq02/Kg). The lowest free fatty acid (FFA) number could be achieved by 33% of ethanolic extract under 12 hours’ maceration (2.5%). Statistical analysis revealed the impact of solvent, concentration and time to peroxide value and free fatty acid value. It can be concluded that bulk cooking oil can be engineered to be safer by adding noni organic waste of noni fruit.
Determination of the best flow direction in wastewater treatment for vehicle wash facilities using activated carbon filters
Authors: Pradiko H , Mulyatna L , Afiatun E , Heraudi A F 
Published: March 2021

Abstract
Vehicle washing service is a commercial activities used detergent as supporting material to clean vehicles. The vehicle washing waste decrease the ground water and surface water quality. Water savings are needed trough recycling and fixing water quality. This study aims to determine the best flow direction in reducing the turbidity, surfactants, and COD concentration contained in the wastewater using an activated carbon filter with the filter diameter 10 cm, the activated carbon height 90 cm and the activated carbon grain in size >2 mm. The variation used in these research is: flow direction (bottom to top, top to bottom in submerged condition, and top to bottom without submerged condition); initial surfactants concentrations; and flow rate. The results showed that the best turbidity removal occur in the up to down direction in all discharge and concentrations variations which succeeded in removing turbidity 100%. The best surfactants removal occurs in the bottom to top direction with a discharge 0.0088 L/s which removed the surfactants 99.92%. The best COD removal occur in the top to down direction with submerged condition in discharge 0.0147 L/s which removed COD 67.45%. Each flow direction has difference mechanism and process to removal parameters.
Bioremediation of petroleum hydrocarbon by mixed bacteria culture of Pseudomonas aeruginosa and Brevibacterium sp.
Authors: Suwardi A , Ratnaningsih R , Rinanti A 
Published: March 2021

Abstract
The intention of this research is to overcome pollution by petroleum using bioremediation method with the help of hydrocarbonoclastic bacteria. The first step in this research was to characterize petroleum as pollutants and cultivate mixed culture bacteria, i.e. Pseudomonas aeruginosa and Brevibacterium sp. The second step was degradation test with growth medium of SMSS (Stone Mineral Salt Solution) with variations pH and concentration. It was conducted in a 300 ml Erlenmeyer series with composition of 80% media, 5% petroleum, and 10% bacteria placed in an incubator shaker with a rotation speed of 200 rpm for 7 days. Based on the results from degradation test with growth medium of SMSS, obtained results that TPH (Total Petroleum Hydrocarbon) degradation efficiency is higher at a pH of 8 that is equal to 28.47%. In the variation of concentration, the highest degradation efficiency occurs at concentration of 20% oil which is reduced oil viscosity up to 22.00%. This research proves that Pseudomonas aeruginosa and Brevibacterium sp. can degrade hydrocarbon composition in petroleum with an efficiency of up to 20%.