Electrical distribution system is a component of electrical power system that is very important because it is closest to the customer. In its operation, the distribution system often suffers that causes the flow of electricity to the customer is interrupted. This situation is not expected by customers or by electric power companies. The more frequent and longer the occurrence of electrical power flow interruption, the lower the system reliability, and vice versa. Reliability of a distribution system can be analyzed based on SAIDI and SAIFI parameters. In this research, reliability analysis of distribution system on Gejayan substation. The analysis result using SAIDI and SAIFI parameters shows that Gejayan substation is reliable enough to national standard, while based on international standard still not reliable.
In 2016, Microcontroller Research Group at Dept. of Electrical Engineering Universitas Muhammadiyah Yogykarta has designed and developed a payload for High Altitude Balloon. This payload has function measuring atmospheric parameter vertically and sending the data to ground station on earth using telemetry. The parameters measured are air pressure, temperature and relative humidity. Besides sending these parameters, payload also have mission monitoring real positions of payload using GPS, real time video transmission,regulary capturing and sending image from payload . This payload is tested on the annual Atmosphere Balloon Payload Competition (KOMBAT) 2016. This paper will describe the design payload, payload software algorithms and the results that have been obtained.
Wheeled robot is a robot that can run on a flat surface with the help of wheels as a driving medium. The robot is made using Arduino as a programming brain, where the robot can move forward, backward, turn right, and turn left with a smartphone via Bluetooth module. It is controlled via a smartphone as a remote control and Bluetooth HC-05 as a connecting medium between smartphone and robot. In addition to using the Arduino robot, it uses the L298N motor driver as an output regulator for DC motors. Based on the results of testing on this design, in experiment 1, the speed of robot experiment I is 0.58 m/s for a distance of 3 meters completed in 5.1 seconds, in experiment II, the speed is 0.56 m/s with the same distance and completed in 5.3 seconds, and in experiment III, the speed is speed of 5.4 m/s in 5.5 seconds. The difference in speed and duration between experiments is influenced by factors such as reduced battery voltage, and the process of sending data and pairing can be done as far as 13 meters.
Taman Pendidikan Al Qur'an (TPA) adalah lembaga pendidikan dan pengajaran Islam luar sekolah atau dapat disebut juga sebagai pendidikan non formal untuk anak-anak usia SD (usia 7-12 tahun), yang mendidik santri agar mampu membaca Al-Qur'an dengan baik dan benar sesuai dengan ilmu tajwid sebagai target pokoknya. TPA masjid Al Irsyad Sodanten, Ambarketawang, Gamping merupakan salah satu lembaga TPA yang sudah dimulai sejak tahun 2017. Dengan dukungan dari takmir masjid dan masyarakat sekitar TPA masjid Al Irsyad berkembang dengan sangat baik. Selain pengajaran Al Qur’an sebagai fokus utamanya, TPA masjid Al Irsyad juga memiliki beberapa program lainnya yaitu olah raga, kegiatan memanah, taman bermain tradisional dan outbond. Dengan semakin banyaknya santri yang ikut mengaji serta banyaknya kegiatan, TPA memerlukan tambahan fasilitas belajar untuk mendukung minat belajar para santri dan mendukung kegiatan-kegiatan TPA lainnya. Oleh karena itu berdasarkan permasalahan diatas maka disini kami dari tim pengabdian kepada masyarakat Teknik Elektro UMY mencoba memberikan solusi dengan membantu memberikan tambahan fasilitas belajar kepada TPA masjid Al Irsyad Sodanten dengan tujuan membantu meningkatkan kualitas pendidikan dan minat belajar para santri TPA. Fasilitas belajar yang tim pengabdian adakan yaitu LCD proyektor, sound sistem portabel dan buku-buku agama. Tim juga memberikan kursus cara penggunaan dan perawatan peralatan. Pelaksanaan Program Pengabdian kepada masyarakat di TPA Al Irsyad Sodanten telah terlaksana dengan baik, dengan harapan tambahan fasilitas yang ada dapat memberikan manfaat baik bagi para guru TPA maupun para santri.
The development of communication technology in Indonesia is currently growing, one of which is cellular telecommunications technology. Cellular communication technology developed from the first generation to the present time has entered the 4th generation known as 4G LTE. The writing of this final project discusses the analysis and optimization of the 4G LTE network of Telkomsel seluer operators in Jombang, East Java. Measurements were made using the drive test method to test the 4G LTE network in the inner area of Jombang district. This testing is done to check the network in the inner area whether it is optimal in providing network to customers. This drive test uses a nemo handy device and to analyze drive test results using a nemo analyzer. The results measured when doing a drive test are RSRP, SNR, and throughput parameters. The results of the RSRP parameter get 95% of the total sample RSRP values -100 dBm to 0 dBm. The SNR parameter gets 94% of the total sample which has a value of 0 dB to 25 dB. The throughput parameter gets 95% of the total sample value above 1Mbps. After a drive test and analysis there are 4 areas that need to be optimized because in terms of quality or SNR and the data speed or throughput is below the standards applied by the operator.
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