Auto Cutting Baterai pada Keypoint

Putri, Dianggi Noor Ayu Astari (2019) Auto Cutting Baterai pada Keypoint. Diploma thesis, Insitut Teknologi Sepuluh Nopember.

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Abstract

PT. PLN (persero) menyuplai tegangan 20 kV yang disalurkan ke masyarakat dimana diturunkan menjadi 220VAC melalui perantara Keypoint. Pada Keypoint terdapat modem dan RTU untuk mengirim data ke Master Station. Saat Gardu Induk bermasalah maka suplai tegangan ke Keypoint tidak ada sehingga modem dan RTU tidak dapat mengirim data ke Master Station. Untuk menghindari hal tersebut maka baterai dibutuhkan agar bisa menyuplai tegangan modem dan RTU. Tetapi saat baterai terus menerus menyuplai tegangan sampai dengan kapasitasnya 0% baterai akan cepat rusak dan lifetime baterai akan berkurang. Untuk alat auto cutting baterai ini maka diperlukan kontroler untuk memutus tegangan baterai saat sudah mencapai kurang dari 30%. Disamping itu alat ini akan monitoring kondisi baterai yang akan ditampilkan di LCD berupa arus pada charger baterai, arus pada beban , tegangan 220 VAC dan tegangan baterai untuk mengetahui kapasitas baterai. Hasil pengujian dari sistem auto cutting ini menggunakan modul sensor VAC ZMPT101b dengan rata-rata error 1,88%. Untuk sensor tegangan DC menggunakan pembagi tegangan dengan rata-rata error 1,21%. Penggunaan sensor arus menggunakan modul sensor ACS712 dengan rata-rata error 0,92%. Pada pengujian keseluruhan sistem saat auto cutting dapat dinyatakan berhasil dengan nilai rata- rata presentase kapasitas baterai saat auto cutting yaitu 30,51% yang mendekati set poin yang ditentukan yaitu 30% dengan total percobaan sebanyak 6 kali dengan cara discharing baterai yang diberi beban lampu 18 Watt.
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At the internship site, we supply 20KV voltage which is delivered to the community where it is lowered to 220V through the intermediary Keypoint. Whereat Keypoint there is a Modem and RTU to send Tele Status to the Master Station. When the substation is in trouble, the supply voltage to the Keypoint does not exist so Mo-dem and RTU cannot send data to the Master Station. To avoid this, the battery is needed to supply the Modem and RTU voltage. But when the battery continuously supplies the voltage up to 0% capacity the battery will not be able to move the mechanics at the Keypoint to close or open PMT manually, besides that it will have an impact on the lifetime of the shorter battery, and the battery will be damaged quickly. For this Auto cutting battery, a controller is needed to cut the battery voltage when it reaches less than 30%. Besides that this tool will monitor the battery condition that will be displayed on the LCD in the form of current on the battery charger, current at load, 220V voltage and battery voltage to determine the battery capacity. The test results from this auto cutting system use the VAC ZMPT101b sensor module with an average error of 1.88%. For DC voltage sensors use a voltage divider with an average error of 1.21%. The use of current sensors uses the ACS712 sensor module with an average error of 0.92%. On testing the whole system when auto cutting can be declared successful with an average value of the percentage of battery capacity when auto cutting is 30.51% which approaches the set set point which is 30% with a total of 6 times the experiment by discharing batteries that are charged with light 18 Watt

Item Type:	Thesis (Diploma)
Uncontrolled Keywords:	Auto Cutting, Baterai, Keypoint
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2945 Lead-acid batteries.
Divisions:	Faculty of Vocational > 36304-Automation Electronic Engineering
Depositing User:	Putri Dianggi Noor Ayu Astari
Date Deposited:	10 Aug 2026 06:06
Last Modified:	10 Aug 2026 06:06
URI:	http://repository.its.ac.id/id/eprint/69392

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