Operasi Ekonomis Motor Pompa Air pada Water Treatment Plant menggunakan Metode Iterasi Lambda

Ciptian Weried Priananda; Ferian Bagus Kusuma; Tegar Esa Herlambang; Fivitria Istiqomah; Hendy Briantoro; Arif Musthofa

doi:10.24036/voteteknika.v10i4.119539

Operasi Ekonomis Motor Pompa Air pada Water Treatment Plant menggunakan Metode Iterasi Lambda

Ciptian Weried Priananda⁽¹⁾, Ferian Bagus Kusuma⁽²⁾, Tegar Esa Herlambang⁽³⁾, Fivitria Istiqomah⁽⁴⁾, Hendy Briantoro⁽⁵⁾, Arif Musthofa⁽⁶⁾,
(1) Institut Teknologi Sepuluh Nopember

Indonesia
(2) Institut Teknologi Sepuluh Nopember

Indonesia
(3)

Indonesia
(4) Institut Teknologi Sepuluh Nopember

Indonesia
(5) Politeknik Elektronika Negeri Surabaya

Indonesia
(6) Institut Teknologi Sepuluh Nopember

Indonesia

Corresponding Author

DOI : https://doi.org/10.24036/voteteknika.v10i4.119539

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Abstract

Water Treatment Plant (WTP) sebagai unit pengolahan air memiliki dua buah motor pompa air dengan kapasitas daya listrik yang berbeda pada dua sumur dengan kapasitas yang berbeda pula. Selama ini operasi kedua motor pompa masih menggunakan penjadwalan manual yang berpotensi tidak hemat energi listrik. Hal ini menjadi peluang dalam pengembangan metode pengoperasian ekonomis motor pompa air agar konsumsi energi listrik dapat diturunkan guna mendukung program kerja perusahaan. Penelitian ini memberikan pendekatan operasi ekonomis dengan menggunakan metode Iterasi Lambda yang umum digunakan pada sistem tenaga listrik untuk mencapai operasi ekonomis pada motor pompa air. Iterasi Lambda bekerja dengan mempertahankan kapasitas WTP dengan batasan (constraint) minimum sebesar 25.452 liter dan maksimum sebesar 112.000 liter dari kapasitas tanki WTP. Penggunaan metode Iterasi mencapai konvergensi pada iterasi ke-11, dengan hasil perhitungan motor pompa air pertama sebesar 59.000 liter serta motor pompa air kedua sebesar 53.000 liter dengan biaya total (objective function) setiap satu kali siklus pengisian air Rp 6.214,- lebih hemat 34% dibandingkan dengan metode penjadwalan manual sebelumnya.

Kata kunci : Iterasi Lambda, Motor Pompa Air, Penghematan Energi Listrik, Operasi Ekonomis.

The Water Treatment Plant (WTP) as a water treatment unit has two water pump motors with different electrical power capacities in two wells with different capacities. So far, the operation of both pump motors is still using manual scheduling which has potentially not energi efficient. This is an opportunity to develop an economical operating method for the water pump motor so that the consumption of electrical energy can be reduced to support the company's work program. This study provides an economical operation approach using the Lambda Iteration method which is commonly used in electric power systems to achieve economical operation on water pump motors. Lambda iteration works by maintaining WTP capacity with a minimum constraint of 25,452 liters and a maximum of 112,000 liters of WTP tank capacity. The use of the Iteration method achieves convergence in the 11th iteration, with the the first water pump motor provide 59,000 liters and the second water pump motor provide 53,000 liters with a total cost (objective function) for each water filling cycle of Rp. 6,214, - , approximatelly 34% more efficient compared to the previous manual scheduling method.

Keywords: Lambda Iteration, Water Pump Motor, Electric Energy Saving, Economical Operation

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