CHAPTER 1 PRELIMINARY Interconnection Study Report 3 x 38 MW Siborpa Hydro Electric Power Plant CHAPTER 1 PRELIMINARY 1.1. BACKGROUND To address the growing need for electricity, the government opens opportunities for all parties, including local and private governments, to participate in the development of the electricity power sector. Soaring world oil prices while the availability of domestic reserves is running low, the Government then accelerates the achievement of new and renewable energy utilization rates in energy mix for power supply by encouraging the utilization of water energy for power generation. Electrical energy generated by both PLN and IPP power plants is attempted to be integrated into one transmission network before the energy reaches the customer/consumer. So the transmission system needs to be protected from adverse effects that can disrupt the system. 1.2. OBJECTIVE This Interconnection Study intends to fulfill the requirements of the PJBL process to conduct a 3 x 38 MW Siborpa Hydro Electric Power Interconection Study to a 150 kV PLN Transmission System PLN of North Sumatera, with a view to check the feasibility of hydroelectric interconnection and to examine whether there are negative impacts and steps solutions to overcome these impacts as outlined in detail at the end of this study is the interconnection facility. This interconnection study is an initial information to PLN in conducting Operation Feasibility Study (Kajian Kelayakan Operasi) and Financial Feasibility Study (Kajian Kelayakan Finansial) and Risk Analysis (Analisa Resiko). 1.3. SCOPE OF WORKS The scope of this works are: 1. Interconnection Feasibility 2. Transmission Impact Assesment 3. Interconnection Facility CHAPTER 1 - PRELIMINARY 1-1 Interconnection Study Report 3 x 38 MW Siborpa Hydro Electric Power Plant 1.4. REPORTS Reports of this study include: 1. Interconnection Feasibility Report Intercoonnection feasibility report includes the purposes, objectives and methodology of the study and survey data to identify potential impacts of the Siborpa hydroelectric interconnection that could harm the PLN transmission system of North Sumatra Region. 2. Transmission Impact Assesment Report Transmission impact assesment study report is a study report based on the results of a interconnection feasibility report with a focus on the potential adverse effects of the identified system, and applying the proposed transmission system modification resulting from mitigation of impacts that occur. 3. Interconnection Facility Report Interconnection facility report is a study report conducted based on the transmission impact assesment report with focus on determining cost estimates, connection design and equipment needed to complete the Siborpa hydroelectric interconnection. CHAPTER 1 - PRELIMINARY 1-2
