Garuda - Garba Rujukan Digital

Agung Hariyanto

Sekolah Tinggi Teknik PLN

Author-ID : 4035399

Civil Engineering, Building, Construction & Architecture Materials Science & Nanotechnology Mechanical Engineering

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STUDI RELE DIFFERENSIAL PADA TRAFO INTERBUS DI GARDU INDUK TEGANGAN EKSTRA TINGGI GANDUL Agung Hariyanto; Oktaria Handayani; Daru Kurniawan
Sutet Vol 6 No 1 (2016): JURNAL ILMIAH SUTET
Publisher : Sekolah Tinggi Teknik - PLN

Transmit power, Substation electrical components have a Parent in the form of a power transformer for transforming electrical power, by changing the magnitude ofvoltage while frequency remains. One of its kind based on the voltage i.e. transformer 500/150 kV and 150/70 kV Interbus commonly referred to as Transformer (IBT).Transformer is the heart of the distribution and transmission of which is expected to operate at maximum. In order to function properly, then the transformer must be kept andcared for properly using the proper equipment and systems. As the State-owned electricity company, PT PLN (Persero) trying to supply electrical energy optimally. To maintain thequality of the electrical energy is transmitted, system security and maintenance of the electrical equipment of a much needed parent booths. If the transformer is experiencinginterference, then the distribution of electric power can be interrupted, so a transformer requires protection equipment. On the transformer often experience internal disturbancesso that the main safeguards are required i.e. differential relay useful to secure the entanglement of the transformer in case of a disruption. Rele is very selective and worksso quickly that the system can isolate the internal disorder as quickly as possible without resulting in further damage.

KERJA PEMBEBANAN DAN TEMPERATUR TERHADAP SUSUT UMUR TRANSFORMATOR TENAGA 150/20 kV 60 MVA Juara Mangapul Tambunan; Agung Hariyanto; Wahyu Kurniadi Tindra
Sutet Vol 5 No 2 (2015): JURNAL ILMIAH SUTET
Publisher : Sekolah Tinggi Teknik - PLN

In Indonesia have been in the design of a transformer with an environmental temperature of 2000C and operate around 3000C, so a working transformer must be adapted to the load. Shrink age transformer affected by isolation transformer oil and transformer entanglement. Excessive heat can damage the transformer coil insulation and temperature rise on oil can change the viscosity of the oil transformer. In the observations of work load and temperature on the Power Transformer lead shrink age and ability of the smaller the transformer supplying the load is also on the wane. The increase will raise the temperature of the load end of the hot-spot, which is approaching the maximum allowable value. From observations obtained temperature hot-spot only reached 107.180C, then your age will increase the transformer of 1.3891 years. So according to the calculation, the transformer on a GI Kembangan can operate for 20.55 years according the IEEE when coupled with the age 1.3891 years, then the transformer will be 21.9391 year. To date, Transformers GI Kembangan has been operating for 13 years so the rest of the transformer is expected to become age 8.9391 years.

ANALISIS PENURUNAN BIAYA POKOK PENYEDIAAN TENAGA LISTRIK BELAWAN DENGAN REPOWERING PLTU BELAWAN 4X65 MW MENJADI PLTGU 500 - 600 MW Eri Prabowo; Agung Hariyanto; Wijang Setiyo Purwoko
Sutet Vol 8 No 1 (2018): JURNAL ILMIAH SUTET
Publisher : Sekolah Tinggi Teknik - PLN

Belawan steam power plant has been operating since 1984 with a configuration of 4 x 65 MW. The Belawan power plant is designed to operate with Marine Fuel Oil (MFO) fuel oil. By age, the Belawan power plant has exceeded its design life (the average design life of the plant is 25 to 30 years) and has decreased its power (Derating) and efficiency. So with the condition causes the Cost of Supply Power Supply is not competitive in North Sumatra System with Levelized Tariff value of 2,485.13 (Rp / kWh). From the study of the implementation of Repowering for Belawan steam power plant with configuration per unit of 1-1-2 resulted in Plant efficiency and Heat Rate better than the configuration per unit of 1-1-1. Estimated investment cost of Repowering Belawan Power Plant Configuration 2x260 MW is US $ 500,680,375.63 * Rp. 13,556, - (December middle rate 2017) = Rp. 6,787,328,578,382,54 and the value of its Levelized Tariff is 1,196.22 (Rp / kWh). Repowering with configuration per unit of 1-1-2 has GT 260.949 MW / Unit output, Total Plant Output 739.32 MW, Heat Rate 6072.19 BTU / kWh and Plant efficiency 56.15%.

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