Buku Prosiding Seminar Nasional Tahun 2012 - ELEKTRO ...

TL | 37collected from the survey. From the analyses, we foundthat residential lighting peak load occured at 7 PM with76.3 MW. Another finding is that residential lightingload curve has no coincidence with the system loadingcurve. In fact, Surabaya is the second largest city inIndonesia after Jakarta where its system load curve isalso influenced by indusrial and commercial activitiesbeside residential load. Also, lighting is only part ofwhole residential appliances. It can be concluded thatthe system load curve of Surabaya has a narrower valleythan that in lighting load curve. From having suchlighting as well as system curve, there will beopportunities to influence the loading curve for thepurpose of energy efficiency and conservation, forexample through loading management.AcknowledgementThis paper is presented as part of research activityconducted under Contract No.07/SP2H/PP/LPPM-UKP/II/2012 based on the scheme ”Penelitian HibahBersaing 2012”. Therefore, the authors would like toconvey their gratitude to the Ministry of Education andCulture, Directorate of Higher Education for providingresearch grant through such scheme.Reference[1] L.S. Tribwell, D.I. Lerman, Baseline ResidentialLighting Energy UseStudy, http://eec.ucdavis.edu/ACEEE/1994-96/1996/VOL03/153.PDF, 1996.[2] The Research Advisors, Sample Size Table,Franklin, MA., 2012. http://researchadvisors.com/tools/SampleSize.htm[3] M. Rumbayan, M.Eng Thesis, Asian Institute ofTechnology, Thailand, 2001.[4] A.P. Gautam, M.Eng Thesis, Asian Institute ofTechnology, Thailand, 1997.[5] PT. PLN (Persero) APD Jatim, Kurva BebanHarian Area Dsitribusi Surabaya, 2011.ISBN: 978-602-97832-0-9SNTE-2012