Kajian Manajemen Energi Listrik Pada Stasiun Pompa Air

Abstract

One of the important components for a drinking water company is the operation of a pump station that functions to regulatethe water supply from existing water sources to customers. To operate the water pump, an electric motor is needed as the driving force. Inorder for the energy consumption needed to operate an electric motor to be regulated, it is necessary to manage electrical energy at thepump station. One example of a pump station is the local water company (PDAM) Unit Wendit Malang City. This unit consists of 3 pumpstations namely Wendit 1, Wendit 2 and Wendit 3. These three parts are supplied by 2 transformers with a capacity of 1110 kVA for Wendit2 and 1730 kVA for Wendit 1 and 3.From the results of power factor measurements in the three sections , it is known that the power factorvalue at the Wendit 3 pump station is 0.82. This value does not meet the PLN minimum standard, which is 0.85. If the power factor is lessthan 0.85 then the industry will incur the excess reactive power consumption (kVARh) charges. Therefore it is necessary to study energymanagement at the pump station of PDAM Unit Wendit Malang City. To improve the low power factor, two recommendations were given,namely the installation of VSD (Variable Speed Drive) at the PDAM Unit Wendit 1 and 3 pump stations and the installation of a CapasitorBank at the PDAM Unit Wendit 2 pump station.Based on the analysis, the power factor value PDAM Wendit 3, which was originally 0.82increased to 0.9. In addition, there are savings in electricity consumption per month of 10.48% at PDAM Unit Wendit 1 and 3 and 28.32%at PDAM Unit Wendit 2.