Pada operasi sistem tenaga listrik, pensuplaian tenaga listrik ke konsumen dikatakan baik apabila besarnya tegangan dan frekuensi yang diterima sesuai dengan yang ditentukan dan masih dalam batas toleransinya. Load shedding atau pelepasan beban pada penyulang dilakukan secara otomatis dengan menggunakan under frequency relay (UFR). Pada penelitian ini dibuat simulasi program komputer untuk menganalisis tahapan load shedding yang digunakan oleh PT. PLN (Persero) Sektor Barito sehingga dapat diketahui respon frekuensi akhir setelah dilakukan pelepasan beban dan selanjutnya mencoba memberikan usulan tahapan peleasan beban yang lain untuk mendapatkan respon frekuensi yang baik. Pada output dari simulasi program diperlihatkan untuk pembebanan maksimum 77,9 MW, frekuensi akhirnya adalah 50,61 Hz dan untuk pembebanan minimum 53 MW, frekuensi akhirnya sebesar 50,02 Hz dengan kondisi sistem kehilangan satu unit pembangkit (skenario pertama). Kemudian untuk kondisi sistem kehilangan dua unit pembangkit terbesarnya (skenario kedua), pada pembebanan maksimum 77,9 MW dan minimum 53 MW, frekuensi akhinya masing-masing sebesar 49,7 Hz dan 50,3 Hz.
In some forms, energy is the basic input to life. Energy is equally important to improve the quality of life. Energy conservation can help reduce the demand for energy globally and indirectly improve the environment by reducing the use of fossil fuels. Pumps in drinking water companies are used for processing and distributing water to consumers. Variable frequency drives offer efficient control for the centrifugal pump, which can save the electrical energy required for its operation.
This paper offers a solution for securing a simple residential installation of the dangers of electric shock. In the introduction, the background of the importance of using a protection system in electrical installations is explained and some definitions related to electric shock and RCBO. For the part of the research method, the specifications of the RCBO used are displayed and the flow of the research is also shown. In the discussion and the results it is known that RCBO will trif if there is an overload, short circuit, and electric shock caused by direct contact with the live part. For nominal current (In) from RCBO, RCBO with a value of 6 Ampere and its current sensitivity (I∆n = 30 mA) is chosen according to the RCBO on the market.
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