Abstract
In the rapid development of the world as it is today, the electricity has a very important role in supporting people activities. PT PLN (Persero), which in this case as Government State Owned Company that directly manage the provision of electrical energy is required to be ready to face the development of electricity demand in Indonesia. In distribution system of electricity, problems often occure because of the length of line distribution system which cause voltage drop, technical losses, power losses, etc. One of them happened to PT PLN (Persero) Rayon Muaralabuh. Where the distance between the main substation (GI Solok) with the first connecting substation is ±110 KMS. This distance cause 9.62 % voltage drop during peak load. This nominal of voltage drop happens for just the first connecting substation that will be the source of division for all working areas of PT PLN (Persero) Rayon Muaralabuh. This factor encourages PT PLN (Persero) West Sumatra Area Solok to agree if Independent Power Plant (IPP) takes part in generating electricity, which will be distribute to PT. PLN (Persero) West Sumatera Area Solok Rayon Muaralabuh through interconnection system. The simulation of power flow using Etap 12.6.0 is used to analyze the stability of 20 kV system voltage at PT PLN (Persero) Rayon Muaralabuh before and after interconnection. Based on the result of simulation and Etap calculation, the highest voltage drop before interconnection by IPP is on Feeder express LubukGadang which is 13,71 %. After the interconnection by IPP, the voltage drop on that feeder becomes 4,326%, and the highest voltage drop is 4,855 %. Therefore, the voltage drop after the interconnection by the IPP already meets the standards allowed by SPLN No. 72 of 1987 which is maximum 5 % voltage drop. The precentage of technical losses in PT PLN (Persero) Rayon Muaralabuh before interconnection is 13,074 %, and after interconnection is decreased to 8,306 %.
Highlights
In the rapid development of the world as it is today, electricity has a very important role in supporting people activities
In the distribution system of electricity, problems often occur due to the length of the distribution line resulting some impacts, including; drop voltage, technical losses, power losses, etc.These impacts encourages PT PLN (Persero) West Sumatra Area Solok to agree if Independent Power Plant (IPP) takes part in generating electricity, which will be distribute to PT
Hydro Power Plant (PLTMH) owned by PT SeloKencana Energy which is interconnected with PLN's 20 kV system, it is very helpful for PT PLN (Persero) Rayon Muaralabuh to fulfill electricity demand in Solok Selatan District which reaches 7.8 MW during peak load
Summary
In the rapid development of the world as it is today, electricity has a very important role in supporting people activities. IPP (Independent Power Producer) which in this case is PT SeloKencana Energy (SKE), is a private company which works in Micro Hydro Power Plant (PLTMH). Hydro Power Plant (PLTMH) owned by PT SeloKencana Energy which is interconnected with PLN's 20 kV system, it is very helpful for PT PLN (Persero) Rayon Muaralabuh to fulfill electricity demand in Solok Selatan District which reaches 7.8 MW during peak load. The power plant owned by PT SeloKencana Energy with 2 X 4 MW capacity, has participated together with PT PLN (Persero) Rayon Muaralabuhto reduce voltage drop, technical losses for South Solok Regency and surrounding areas. With the interconnection on 20 kV system with IPP (Independent Power Producer) is very helpful for PT PLN (Persero) Rayon Muaralabuh to fulfill electricity needs in South Solok district which is increasing from time to time, with service voltage that meets the standard. This study aims to analyze the stability of 20 kV System Voltage at PT PLN (Persero) Rayon MuaralabuhBefore And After Interconnection With IPP (PT SKE)
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