Pemodelan Matematis Beban Tersebar Sebagai Beban Terpusat pada Sistem Distribusi 20 kV untuk Studi Aliran Daya

I Made Gina, I Made Ari Nrartha




Abstract


Load flow study on distribution system sometime is not effective for radial power system, which have many distributed loads. This un-effectiveness caused by the bus model for distribution transformer is a load bus in a load flow study. A mathematical model for representing distributed load as lumped load is needed for reducing distributed loads. This research is subjected to make a distribution load model as lumped load by using mass center formula (TPM model) based on lumped load model, [5] Cheng and Shirmohammadi. This models are validated using MATPOWER ver. 3.0.0 load flow to compare model outputs and real condition outputs of distributed loads. Output variables of research is sending power (Ps), sending reactive power (Qs), voltage magnitude (Vr) and angle (r). Validation of these models use standard distribution system (SPLN) and implemented on Gunung Sari Feeder, Lombok. Results of research are TPM model has better than CS95 model. TPM model has error percentage : Ps 0.8780%, Qs 0.6860%, Vr 0.2782% and r 0.637375%. CS95 Model has error percentage: Ps 1.6222%, Qs 1.1843%, Vr 0.8080% and r 7,0762% on standar distribution system (SPLN). Implemented these models on Gunung Sari Feeder, TPM model also has better than CS95 Model. TPM model has error percentage: Ps 0.5155%, Qs 1.0417%, Vr 0% and r 2.0875%, CS95 model has error percentage: Ps 0.5155%, Qs 1.0417%, Vr 0.3566% and r 25.5249%.


Abstract in Bahasa Indonesia:

Studi Aliran daya pada sistem distribusi kadangkala tidak efektif untuk kasus sistem distribusi radial yang memiliki gardu distribusi cukup banyak. Ketidakefektifan ini disebabkan model bus untuk gardu distribusi merupakan bus beban dalam studi aliran daya. Diperlukan model matematis beban (gardu distribusi) tersebar sebagai beban terpusat untuk mengurangi gardu distribusi tersebar. Pada penelitian ini diusulkan pemodelan matematis beban terpusat menggunakan rumusan titik pusat massa (TPM) dengan acuan model beban terpusat, [5]Cheng dan Shirmohammadi. Model diuji dengan aliran daya MATPOWER versi 3.0.0. untuk validitas model diukur dengan % error (daya terkirim (Ps dan Qs), magnitude dan sudut tegangan terima) dengan kondisi real (beban tersebar). Sistem distribusi yang diacu adalah Sistem Distribusi Standar (SPLN) dan diimplemetasikan pada Penyulang Gunung Sari, Lombok. Hasil penelitian menunjukkan untuk berbagai konfigurasi sistem distribusi 20 kV SPLN, Model TPM lebih baik dari Model CS95 karena % errornya lebih kecil yaitu TPM Ps 0.8780%, Qs 0.6860%, Vr 0.2782% dan r 0.637375%. Model CS95 Ps 1.6222%, Qs 1.1843%, Vr 0.8080% dan r 7.0762%. Implemetasi pada Penyulang Gunung Sari, Model TPM juga juga lebih baik yaitu Ps 0.5155%, Qs 1.0417%, Vr 0% dan r 2.0875%. Model CS95 Ps 0.5155%, Qs 1.0417%, Vr 0.3566% dan r 25.5249%.

Kata kunci : beban tersebar, beban terpusat, titik pusat massa, sistem distribusi 20 kV dan aliran daya


Keywords


distributed load, lumped load, mass center formula, 20 kV distribution system, and load flow study.

Full Text: PDF

The Journal is published by The Institute of Research & Community Outreach - Petra Christian University. It available online supported by Directorate General of Higher Education - Ministry of National Education - Republic of Indonesia.

©All right reserved 2016.Jurnal Teknik Elektro, ISSN: 1411-870X

 

shopify traffic stats
View My Stats




Copyright © Research Center Web-Dev Team