EVALUASI PERHITUNGAN LOAD FLOW GENSET PADA KERETA API SENJA UTAMA SOLO KA 133 MENGGUNAKAN ETAP POWER STATION 12.6

RAMDHONI, ANGGIT (2021) EVALUASI PERHITUNGAN LOAD FLOW GENSET PADA KERETA API SENJA UTAMA SOLO KA 133 MENGGUNAKAN ETAP POWER STATION 12.6. S1 thesis, Universitas Mercu Buana Jakarta.

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Abstract

Electric Power Flow Analysis (Load Flow) is a study to plan and determine the amount of power in an electric power system. This load flow analysis study takes an example of the implementation of an electric power system on a generator installed on the Senja Utama Solo KA 133 with lumped load characteristics. The power flow analysis begins with calculating the active power and reactive power at each installed node (bus), loading on the line or conductor, the value of power loss (losses), system voltage drop, and power flow in the installed electric power system network and comparing the results of manual calculations with ETAP Power Station 12.6 simulation results. To find out the capacity and voltage, data collection of equipment is carried out. ETAP Power Station 12.6 software is used to simulate a single line diagram, by entering load data and the power factor will be known. The results of the simulation will know the total power flow of the load, the current flowing in each train carriage and the losses in each carriage. The results of manual calculations obtained that the total load of 7 passenger trains and 1 dining train train was 306.11 kVA with an installed generator capacity of 400 kVA with a total load borne by the generator at 76.5% of the generator capacity. The ETAP simulation of the voltage drop on each bus has a small value, namely Bus SDP 1 to SDP 8 of 0.95%. From the simulation results on ETAP, the losses from the generator to the MDP Bus are 4.8 kW and the Line losses to the SDP each carriage are 0.9 kW. The results of the simulation of short circuit faults on the generator bus and SDP load Carriage 1 to carriage 8 obtained a maximum symmetrical breaking current value of 2.681 Amp on the Gen to Load Bus and a peak asymmetric disconnection current of 6.075 Amp. The results of the manual calculation of the safety rating on each passenger car are 63.32 A and the ETAP simulation results show a value of 55.9 A. The difference obtained is the safety factor +115% from the manual calculation based on PUIL 2000 points 510.5.4.3. Keywords: Load Flow, ETAP Power Station 12.6, Losses, safety rating, PUIL 2000 Analisis Aliran Daya Listrik (Load Flow) adalah suatu studi untuk merencanakan dan mengetahui besarnya daya dalam suatu sistem tenaga listrik. Studi analisis aliran beban ini mengambil contoh pada implementasi sistem tenaga listrik pada Genset yang terpasang pada KA Senja Utama Solo KA 133 dengan karakteristik beban terpusat (lumped load). Analisis aliran daya diawali menghitung daya aktif dan daya reaktif pada setiap simpul (bus) terpasang, pembebanan pada saluran atau penghantar, nilai rugi daya (Losses), jatuh tegangan sistem, dan aliran daya pada jaringan sistem tenaga listrik terpasang dan membadingkan hasil perhitungan manual dengan hasil simulasi ETAP Power Station 12.6. Untuk mengetahui kapasitas dan tegangan maka dilakukan pengumpulan data-data peralatan. Software ETAP Power Station 12.6 digunakan untuk mensimulasikan single line diagram, dengan memasukkan data beban dan faktor daya akan diketahui. Hasil dari simulasi akan diketahui besar total aliran daya beban, besar arus yang mengalir di setiap Gerbong KA dan losses tiap Gerbong. Hasil perhitungan manual diperoleh total beban 7 KA penumpang dan 1 KA kereta makan sebesar 306,11 kVA dengan kapasitas Genset terpasang 400 kVA dengan total beban yang ditanggung genset sebesar 76,5% dari kapasitas genset. Simulasi ETAP jatuh tegangan atau drop voltage pada setiap bus mempunyai nilai yang kecil, yaitu Bus SDP 1 hingga SDP 8 sebesar 0,95%. Dari hasil simulasi pada ETAP didapat nilai losses dari Genset menuju Bus MDP sebesar 4.8 kW dan losses Line menuju SDP tiap gerbong sebesar 0.9 kW. H asil simulasi gangguan hubung singkat pada Bus genset dan load SDP Gerbong 1 hingga gerbong 8 didapatkan nilai arus pemutusan simetris maksimum sebesar 2.681 Amp pada Bus Gen to Load dan arus pemutusan asimetris puncak sebesar 6.075 Amp. Hasil perhitungan manual rating pengaman pada tiap gerbong penumpang sebesar 63,32 A dan hasil simulasi ETAP menunjukkan nilai 55,9 A. Selisih yang didapat adalah factor safety +115% dari perhitungan manual berdasarkan PUIL 2000 poin 510.5.4.3. Kata Kunci: Load Flow, ETAP Power Station 12.6, Losses, rating pengaman, PUIL 2000.

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