Abstract
This paper presents a gridd study of Mini Hydro Power Generation (MHPP) of Palangai Hulu, 2 x 4.9 MW. It is owned by PT. Dempo Sumber Energi (DSE) located at Palangai of South Pesisir Regency. The objective is to fulfill the legal aspects, technical aspects and economic aspects to develop of MHPP. The legal aspect is one of the requirements that must be fulfilled prior to the signing of Power Purchase Agreement (PPA) between DSE and State Electricity Company that called PLN. Technical aspect is to analyze the operational impact of the distribution system after MHPP connecting to the PLN distribution system, while the economic aspect is to analyze how much result energy of MHPP can be absorbed by PLN. Uultimately, it is described the financial feasibility of MHPP. The result is, legal aspect of development of MHPP of Palangai Hulu feasible to be continued to next process to sign contract of PPA. Technically, there is no negative impact of operating the PLN distribution system after the MHPP is connected to the PLN Rayon Balai Selasa system that analyzes using ETAP. Point of Connection (POC) as the selling point of electrical energy by DSE to the most economical PLN is on substation circuit of Balai Selasa. The energy production of MHPP Palangai Hulu can be absorbed 96.4% starting in 2018. The cost of POC is Rp. 11,577,000,000.
Highlights
Electricity demand in Indonesia always increases every year
Electrical energy that generated by PLN and Independent Power Producer (IPP) power plants are integrated into a transmission and distribution network, before the energy gets to customers
This study aims to determine the point of connection (POC), the amount of power generated IPP that can be absorbed by the PLN without causing negative impact to existing PLN network system, connection facility, equipment capacity upgrade after MHPP connected
Summary
Electricity demand in Indonesia always increases every year. During the five years ago in the period 2010 to 2014 there was an increase in electrical energy sales from 145.7 Tera Watt hours (TWh) to 197.3 TWh, the number of costumers increased from 42.2 million to 57 million and the electrification ratio increased from 66.2 % to 84%. Electrical energy that generated by PLN and IPP power plants are integrated into a transmission and distribution network, before the energy gets to customers. This study aims to determine the point of connection (POC), the amount of power generated IPP that can be absorbed by the PLN without causing negative impact to existing PLN network system, connection facility, equipment capacity upgrade after MHPP connected. PLN has published a guidebook for the Connecting Center for New and Renewable Energy (PLT EBT) to the PLN Distribution System. These are used by PLN and PLT-EBT developers to ascertain and mitigate the risk of disruption to the system due to PLT-EBT connections and the basis for signing the Power Purchase Agreement (PPA) [3]. Several studies that required to be done to achieve the objectives of the grid study include (a) load flow analysis in the distribution system; (b) short circuit analysis; (c) breaking capacity analysis (d) protection analysis and coordination set coordination (e) stability analysis, (f) harmonic analysis, using the ETAP 12.00 programming on peak load times (WBP) and out of peak load times (LWBP) in 2014
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