Loss financial evaluation and total ownership cost of transformers in large-scale solar plants

B. A. Thango, L. S. Sikhosana, A. F. Nnachi, J. A. Jordaan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

In the recent multifaceted transformation dawn of low-carbon power generation markets and escalated growth of the renewable energy technologies in South Africa, a comprehensive analysis of the technical and economic performance of transformers has been under-explored as a result of insufficient knowledge in this study area. The Transformer Total Ownership Cost (TTOC) is an economic evaluation pre-planned to give the transformer purchasers and owners the intended service-lifetime costs basis of their transformer's investment. The procedure for evaluating the transformer TTOC depend upon the concept of service-lifetime loss evaluation of transformers. Meticulously, this techno-economic concept considers the arithmetic sum of the presented discounted value (PDV) of a unit kilowatt loss of the transformer during its intended service-lifetime. In a competitive bidding process, the TTOC is employed as a criterion to select the most suitable option among competing offers by transformer manufactures and hence to substantiate the purchasing decision of the units capable of achieving maximum productivity at minimum expense. This work provides transformers' service-lifetime loss evaluation method which fulfills some of the operational requirements that have been introduced from the recent deployment of solar photovoltaic plants into the modern South African energy mixed electrical network. The proposed method herein takes into account the intermittent nature of the solar PV, annualized energy cost and services losses. The results yield a TTOC optimized for the operational requirements of modern solar PV plant in a South African context.

Original languageEnglish
Title of host publication2021 IEEE PES/IAS PowerAfrica, PowerAfrica 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665403115
DOIs
Publication statusPublished - 23 Aug 2021
Externally publishedYes
Event8th Annual IEEE Power and Energy Society and Industrial Applications Society PowerAfrica Conference, PowerAfrica 2021 - Virtual, Nairobi, Kenya
Duration: 23 Aug 202127 Aug 2021

Publication series

Name2021 IEEE PES/IAS PowerAfrica, PowerAfrica 2021

Conference

Conference8th Annual IEEE Power and Energy Society and Industrial Applications Society PowerAfrica Conference, PowerAfrica 2021
Country/TerritoryKenya
CityVirtual, Nairobi
Period23/08/2127/08/21

Keywords

  • Service lifetime
  • Solar Photovoltaic Plant
  • Total ownership cost
  • Transformer

ASJC Scopus subject areas

  • Information Systems and Management
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering

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