Comparing power system architectures for domestic lighting in isolated rural villages with homer

Nathan G. Johnson, John W. Glassmire, Peter D. Lilienthal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Selecting power system architectures for rural electrification is a process dependent on several technical, economic, and human resource design requirements. PV-generator-battery systems are common for large village loads while PV-battery systems tend to be preferred for smaller village loads. This study compares three power system architectures (PV-battery, PV-generator-battery, generator only) for part-time evening domestic lighting in a small isolated rural village. Although the evening load profile disfavors PV systems, the small part-time load also disfavors generators. Multiple technical and financial figures of merit are used to compare systems. Detailed consideration is given to the relationship between power availability and power cost, a metric uncommon to rural electrification studies. The net present cost of the generator only system and hybrid system is invariant with changes in annual unmet load allowance. The net present cost of the PV-battery system decreases with increases in unmet load-the higher granularity in the installed capacity of PV-battery systems allows reductions in system cost if project stakeholders allow power shortages for evening lighting. This design consideration can reduce the high initial of PV-battery systems. For the domestic lighting load modeled in the study the PV-battery architecture becomes the lowest cost option for an unmet load allowance of 1% or greater.

Original languageEnglish (US)
Title of host publicationProceedings - 2012 IEEE Global Humanitarian Technology Conference, GHTC 2012
Pages375-380
Number of pages6
DOIs
StatePublished - Dec 1 2012
Externally publishedYes
Event2nd IEEE Global Humanitarian Technology Conference, GHTC 2012 - Seattle, WA, United States
Duration: Oct 21 2012Oct 24 2012

Publication series

NameProceedings - 2012 IEEE Global Humanitarian Technology Conference, GHTC 2012

Other

Other2nd IEEE Global Humanitarian Technology Conference, GHTC 2012
CountryUnited States
CitySeattle, WA
Period10/21/1210/24/12

Keywords

  • micro-grid; village power; hybrid power; HOMER;domestic lighting
  • sub-Saharan Africa.

ASJC Scopus subject areas

  • Human Factors and Ergonomics

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    Johnson, N. G., Glassmire, J. W., & Lilienthal, P. D. (2012). Comparing power system architectures for domestic lighting in isolated rural villages with homer. In Proceedings - 2012 IEEE Global Humanitarian Technology Conference, GHTC 2012 (pp. 375-380). [6387079] (Proceedings - 2012 IEEE Global Humanitarian Technology Conference, GHTC 2012). https://doi.org/10.1109/GHTC.2012.55