FORISTEK : Forum Teknik Elektro dan Teknologi Informasi
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PERBAIKAN KUALITAS TEGANGAN MENGGUNAKAN DYNAMIC VOLTAGE RESTORER (DVR)
Full text linkDynamic Voltage Restorer is one of quality solution methods of electric power that is used to recover drop voltage (sag) by injecting voltage to the network. Injection of minimum power method is minimum active power supplied to the load as compensation of sag. Thus, it can stabilize load voltage. The aim of this research is to maintain voltage magnitude constantly in the sensitive load location, when fault occur. In tackling sag and swell problems, DVR can solve balance and unbalance conditions by injecting appropriate voltage component. Therefore, the normal condition at source voltage can be achieved as soon as possible. DVR Control produces fast and accurate response that lead to an accurate solution increasing quality of electric power system caused by sag. Sag can disturb performance of sensitive equipments. MATLAB-SIMULINK withtoolbox of electric power system will be utilized in simulation process
PERANCANGAN PROGRAM SIMULASI PERINTAH DASAR JARINGAN KOMPUTER
Full text linkThis research is intended to design software that is able to simulate the basic commands of the computer network. Simulation program is planned to serve for people who do not understand about computer networks and have a strong desirelearning the basics of computer networks. The design result of this research is command of ping, telnet, ftp, route, andifconfig. The design of the simulation program also produces 10 units or classes that contain the components of the specificactivity or program
SISTEM DETEKSI DINI BANJIR BERBASIS SENSOR FLOAT MAGNETIC LEVEL GAUGE
Full text linkCentral Sulawesi has tropical climate conditions with interconnected rivers caused each of it can experience the impact of the sudden rise of water levels if there is a heavy rainfall in upstream areas which is commonly called “a sent flood”. Therefore, it is needed an early detector flood tool that works based on the height of river water level so that the impact of floods can be minimized. Early detector flood tool can function automatically by giving early warning when water levels reach a certain limit. The detector of height levels of river streams is designed using float magnetic level gauge method. This height level of river streams detector is able to provide information in real time based on the height level of river streams by giving information in the form of warning light indicator and siren alarm as alert and danger sign
DAMPAK PEMASANGAN DISTRIBUTED GENERATION TERHADAP RUGI-RUGI DAYA
Full text linkThe introduction of distributed generation (DG) onto distribution networks has a significant effect on power system. This effect cannot be characterized as detrimental or beneficial but is dependent on the allocation of DG on each distribution network section. Here the impact of DG on losses has been modeLED, facilitating a unique approach to the allocation of DG. This approach has been implemented and tested on sample sections of distribution network and results are presented showing the optimal allocation of DG which improves the efficiency of energy delivery on the distribution network. This paper aims to investigate the impact of distributed generation on distribution system losses. The main objective is to reduce the power losses based on location of DG and size of injection.
Minimizing losses in the system is a delicate balance; one of the key areas is a balance between transmission losses andstorage losses. Distributed generation can save on transmission losses and must be carefully designed to ensure that storage and the losses associated are minimized. Distributed generation can be used in niche applications to assist distributed generation and help manage the variability of the transmission grid.
Using application program ETAP 6.0 and the Manokwari electricity distribution system as case study, the results shows thatat certain location, the power injection of DG has decrease losses from 240,15 kW to 99,39 kW and more economic than without DG installation. The best location of interconnection is bus 77 from power grid and injection of 85% DG capacity
APLIKASI FILTER PASIF SEBAGAI PEREDUKSI HARMONIK PADA INVERTER TIGA FASE
Full text linkHarmonic is one of sinusoidal components, one wave period from which having multiple frequency of its fundamental frequency one, leading to electrical power quality problems. Harmonic distortion in term of voltage and current ones, generally is due to non linier impedance. Inverter is one of example of it. There are some items that will be measured. There are value of harmonic at source and value of voltage and current harmonic when inverter does not have any load. IEEE Standard of 519-1992 as a reference in determining maximum limitation voltage and current harmonics.
The result of the tests were showed that voltage harmonic distortion at inverter did not exceed the IEEE 519-1992 maximum limitation of 5%. While current harmonic distortion had exceed the maximum limitation of the IEEE 519-1992. The highest results were exceeding 57,52 % when inverter does not have any load. After using passive filter that function for reducing the value of harmonic, the total harmonic distortion (THD) current w only 6,837% when inverter does not have any load
PEMODELAN STRATEGI MANAJEMEN ENERGI BERBASIS SOLUSI ANALITIS UNTUK KENDARAAN HIBRIDA LISTRIK-HIDROGEN
Full text linkEnergy Management Strategy (EMS) implemented in the fuel cell hybrid propulsion system aims to minimize the fuel consumption needed to provide the required power demand. Various EMS methods have been built to solve the optimization problem in minimizing the fuel consumption. This paper provides a modeling of new alternative approach of EMS method calLED analytical solution which is based on the minimization of the losses in the vehicle propulsion system. This method ensures that the minimization in the propulsion losses matches the minimization in the fuel consumption. Since the minimization is applied to the propulsion losses, this method has shifted the EMS objective to minimize the losses in the fuelcell hybrid propulsion system, still enabling to supply the demanded power for traction. The important advantage of this method is that it enables the real time implementation
PENERAPAN KOMPLEKSITAS WAKTU ALGORITMA PRIM UNTUK MENGHITUNG KEMAMPUAN KOMPUTER DALAM MELAKSANAKAN PERINTAH
Full text linkThe purpose of this study is to develop the software using both Delphi 7 and ArcView GIS 3.3 programming languagewhich is able to apply Prim's algorithm in obtaining the time complexity used to calculate the cability of computer inexecuting the command. This study not only compares two pieces of software built by the authors but also compares the cability of two computers that each have different specifications.
It has been proven that the software generated in this study can be utilized to get the complexity of time by using Prim’salgorithm which is used to calculate the ability of computer in executing the command. The software can also accuratelydisplay the minimum spanning tree as a result of applying the Prim's algorithm. The capability of computer is examined in terms of the accuracy and speed in executing the commands. The examination result shows that the capability of the first computer specifications is higher than the capability of the second computer specifications in applying the Prim's algorithm. The other result found in this study shows that the computation time software built in Delphi 7 is faster than the computation time software built in ArcView GIS 3.3. This result indicates that in terms of applying the Prim's algorithm, the software built in Delphi 7 is more efficient than the software built in ArcView GIS 3.3
PENENTUAN POHON RENTANG MINIMUM PADA DISTRIBUSI JARINGAN LISTRIK BERDASARKAN KONDISI GEOGRAFIS SUATU WILAYAH DENGAN ALGORITMA PRIM STUDI KASUS: JARINGAN LISTRIK DISTRIBUSI PRIMER KOTA SAMARINDA
Full text linkDetermination of the minimum spanning tree are widely used to solve optimization problems of finding solutions to problems that require minmum. In the electricity distribution network, minimum spanning tree (MST) is used to find the minimum length of cable for electricity network system becomes more optimal. Minimum weight of a MST primary distribution power network is strongly influenced by the geographical conditions of a region in the form of contour data. Contour data is spatial data that contains information of the earth surface elevation of an area.
To determine the primary distribution grid MST needed an algorithm that can produce optimal solutions. In this research thealgorithm used is algorithm Prim. Prim's algorithm is an algorithm in graph theory to find the MST of a weighted graph withemphasis on the selection of minimum weight based on the node is taken.
This research was done by designing a model of primary distribution power network graph in accordance with the data obtained. In finding the minimum weight for each side of the network graph should include parameters elevation, high point / node, and the distance between points / nodes. Furthermore, the graph is done by computer calculation and simulation to get the electricity distribution network primary MST using Prim's algorithm with the help of ArcView GIS 3.3 program through the avenue script
Prim's algorithm included in the category of good or efficient algorithms, because the shape of polynomial time complexity in n, where n is a measure of the number of vertices or sides. Based on the test results have shown that the algorithm Prim MST ability to determine the primary distribution grid is much better if based on the geographical conditions of a region. In addition, Prim's algorithm graph computation time in generating the MST based on the data that is not based on the contourand contour data are quadratic
E-LEARNING SEBAGAI MEDIA PEMBELAJARAN INTERAKTIF BERBASIS TEKNOLOGI INFORMASI
Full text linkThe development of science and technology, especially information technology, internet use in education continues to grow. Use of the Internet is not just for distance education, but also developed in the conventional education system. E-learning is a learning model that is created in digital format through an electronic device. Purpose of the use of elearning in the learning system is to expand access to education public, so that learning modules can be accessed easily, without diabatasi space and time, interactive, and effective. In this paper a prototype using a software development methodology that emphasizes the approach to aspects of design, functionality and user-interface. The final product is expected to be a module-based learning application of information technology
PROTOTYPE SISTEM KATALOG BUKU ONLINE MENGGUNAKAN TEKNOLOGI JAVA DAN XML UNTUK PERANGKAT SELULER
Full text linkLibraries as providers of information that is generally in the form of print media (books, reports, magazines, newspapers, journals, etc.) should gradually improve its services so that remain attractive to the visitors. One of the service improvements that can be done is to provide an information catalog that can be accessed by telecommunications media such as mobilephone and smart phone. This paper aims to create a prototype of the online book catalog system software using Java and XMLtechnology and use wireless networking technology from the hardware catalog of books that can be accessed by cellular telephone communication media in particular. By inspecting the testing results conducted in this study known that the catalog is accessible for cellular phones from various vendors