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Journal : BEES: Bulletin of Electrical and Electronics Engineering

Analisa Koordinasi Proteksi Relay Jarak Dengan Software Digsilent Pada Gi Sukolilo Ke Gi Kenjeran Menggunakan Metode Fuzzy Misbahul Munir; Novian Patria Uman Putra; Wahyu Setyo Pambudi; Nasyith Hananur Rohiem; Ipung Nur Ifan
BEES: Bulletin of Electrical and Electronics Engineering Vol 3 No 1 (2022): July 2022
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bees.v3i1.3150

Abstract

The electromagnetic distance relay at the Sukolilo substation has been replaced with a digital relay equipped with a recloser. If there is a disturbance, the relay will trip and reconnect automatically. The setting values have changed as a result of this replacement. The purpose of this study was to determine the value of the distance relay setting at the Sukolilo substation using traditional calculations, which would then be implemented in a computer program developed by PLN Ltd. It also found out the results of calculations per zone included in the distance relay zone. This study employed a fuzzy method with digsilent software. The research data comprised data on SUTT installed at the Sukolilo substation, data on conductor relay settings at the Sukolilo substation, data on short circuit currents, and transformer ratios. The simulation results in this study indicated that the distance relay had a setting value that was not in accordance with the standard in the old setting of the Sukolilo substation zone 1 for protection (175.42%), while the calculation results showed that zone 1 protected 58.44%. The new impedance setting covered zone 1 = 0.338, zone 2 = 0.862, and zone 3 = 1.488, whereas the old impedance setting showed zone 1 = 0.1126, zone 2 = 0.2924, and zone 3 = 0.4128. The old setting time and the new setting showed a big difference in that the old setting time was 0.25 seconds with a range of 175.42% while the new setting time was 0.25 seconds with a range of 58.44%.
Analisa Efisiensi Daya Solarcell dengan Integrasi Sistem Pendingin Abid, Muhammad Suryo; Pambudi, Wahyu Setyo; Suheta, Titiek; Wati, Trisna; Munir, Misbahul
BEES: Bulletin of Electrical and Electronics Engineering Vol 4 No 3 (2024): March 2024
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bees.v4i3.4964

Abstract

One of the advantages of solar cells is their ability to generate electricity without creating noise or air pollution. However, they have the disadvantage of increasing temperature due to continuous exposure to solar radiation, thereby decreasing solar cell efficiency. A solution to mitigate this effect is a cooling system for solar cells. Cooling methods for solar cells consist of active and passive methods. Active cooling methods for solar cells require power consumption, necessitating analysis and evaluation of their efficiency in practical applications. This research analyzed the power efficiency of a cooling system using a water pump, peltier, and fan. The power measurements generated by the cooled solar cell produced a power efficiency of 8.64%, compared to a solar cell without cooling. Meanwhile, the average power efficiency over six data collections was 7.82%.
Analisa Sensitivitas Pada Pengoptimalan Powerflow Untuk Menentukan Pengaruh Variasi Beban Terhadap Stabilitas Sistem Bagus S, Alfian T; Munir, Misbahul; Pambudi, Wahyu Setyo
BEES: Bulletin of Electrical and Electronics Engineering Vol 5 No 2 (2024): November 2024
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bees.v5i2.4867

Abstract

The electrical power system requires reliability to provide good and stable services. Each area has a variety of load characteristics related to the energy patterns of users in that region. As the solution, optimizing power flow in the interconnected system is necessary to improve reliability, quality, and system stability. This study aims to determine the impact of load variations on system stability. The simulation results indicated that the power flow at bus 1 and bus 2, directly connected to the generator, got stable balance. Specifically, bus 1 had an active power of 144 kW and a reactive power of 102 kVAr, while bus 2 had an active power of 54 kW and a reactive power of 54 kVAr. The comparison of active power with the motor constant of 100%-0% static showed that the highest value at load 1 reached 37.12 kW. Similarly, the comparison of reactive power with a motor constant of 80%–20% for the static constant showed that the highest value, achieved at load 6, was 19.2 kVAr. Thus, the simulation is beneficial to analyze the sensitivity in optimizing power flow within the electrical power system and can serve as a reference for future research.