The International Journal of Engineering and Science (IJES) || Volume || 11 || Issue || 4 || Series I || Pages || PP 18-25 || 2022 || ISSN (e): 2319-1813 ISSN (p): 20-24-1805 DOI:10.9790/1813-1104011825 www.theijes.com Page 18 Implementation Of Demand Side Management At Siantan Substation for Load Factor Improvement Gita Pratiwi 1 , Rudy Gianto 2 , Rudi Kurnianto 3 , Redi R Yacoub 4 , Bomo Wibowo Sanjaya 5 Fitri Imansyah 6 , Leonardus Sandy Ade Putra 7 , Jannus Marpaung 8 gitapratiwi77@student.untan.ac.id 1 , rudy.gianto@ee.untan.ac.id 2 , rudikuru@gmail.com 3 , rediyacoub@ee.untan.ac.id 4 , bomo.wibowo@ee.untan.ac.id 5 , fitri.imansyah@ee.untan.ac.id 6 , leonardusandy@ee.untan.ac.id 7 , jannusmarpaug@ee.untan.ac.id 8 Department of Electrical Engineering, Tanjungpura University 1,2,3,4,5,6,7,8 Corresponding Author: Gita Pratiwi --------------------------------------------------------- ABSTRACT------------------------------------------------------------ Siantan substations located within the west Kalimantan electrical system, known as Khatulistiwa GI system consists of 11 feeders. Including cottage, beting, navigasi, hoktong, tugu, wilmar, pangeran, selat panjang, vitamo, malaya dan puring 1. in 2019, the usage of electrical energy at the Siantan substation from customers is still suboptimal yet, cause the uneven use of electrical energy during peak load times (PLT) and outside peak load times (OPLT), causing a low load factor value of 0.84. This is certainly detrimental to all parties, both for PLN itself and for customers. Thus, it is necessary to have a system to assist in increasing the value of the load factor, namely by Demand Side Management (DSM) with the load shifting method. DSM is the scheming, implementation, and monitoring of utility activities designed to affect the customer's electricity usage in a way that will result in the desired changes in the form of utility loads, i.e. changes in the time pattern and magnitude of utility loads. Load shifting means moving the load from the PLT period to the OPLT period. In this study, a simulation of the application of the DSM load shifting method uses 4 scenarios with variations in time and load values. From the simulation, scenario 1 has a load factor value of 0.90 with a savings of 13.13% per year, scenario 2 has a load factor value of 0.87 with a savings of 5.83% per year, scenario 3 has a load factor value of 0.89 with a savings of 11.36% per year and scenario 4 has load factor value of 0.88 with a savings of 8.61%. Key Words : Substation, DSM, Load Shifting, Load Factor --------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 01-04-2022 Date of Acceptance: 10-04-2022 --------------------------------------------------------------------------------------------------------------------------------------- I. INTRODUCTION Electricity System in West Kalimantan known as the Khatulistiwa System, Siantan GI is part of the Khatulistiwa System. GI Siantan consists of 11 feeders, including cottages, shoals, navigation, hoktong, monument, wilmar, prince, long strait, vitamo, malaya, and puring 1. Based on the daily load data of PT. PLN (Persero) in 2019, the use of electrical energy by customers is still not optimal, namely the uneven use of electrical energy at the time of WBP and LWBP, causing the load factor value to be low, namely 0.84. This of course has a detrimental impact on all parties, both for PLN itself and for customers. Therefore, it is necessary to have a system to increase the value of the load factor, namely by applying DSM with the load shifting method. Based on the provisions of PLN, the Peak Load Time (WBP) is at 17.00 – 22.00 WIB (Agus Mulyadi et al 2017)[1]. According to Gellings (1985), the DSM approach will provide mutual benefits for the customer and the power company. For customers, the benefits are reduced electricity bill costs during WBP and for the power company itself it can delay the construction of new power plants and make the load curve more evenly distributed during peak and off-peak loads [2]. With DSM consumers can save on electricity bill costs by changing their consumption patterns and for utilities can reduce generation requirements during peak hours, which offers operational flexibility and benefits for utilities (Dario Javor et al 2016)[3]. Energy saving is a major part of the design concept in the operation of the substation. Energy efficient substations can provide good social, environmental and economic benefits for future engineering designs (Guangming Wang et al 2020) [4]. More generating units is not the only solution to meet the increasing demand for electrical energy, because there are many things that must be considered for the establishment of new plants,