Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System

Kwan-Shik Shim, Seok-Il Go, Sang-Yun Yun, Joon-Ho Choi, Won Nam-Koong, Chang-Hoon Shin and Seon-Ju Ahn
Additional contact information
Kwan-Shik Shim: Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea
Seok-Il Go: Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea
Sang-Yun Yun: Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea
Joon-Ho Choi: Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea
Won Nam-Koong: Energy System Group Energy New Business Laboratory, Korea Electric Power Research Institute, Daejeon 34056, Korea
Chang-Hoon Shin: Energy System Group Energy New Business Laboratory, Korea Electric Power Research Institute, Daejeon 34056, Korea
Seon-Ju Ahn: Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea

Energies, 2017, vol. 10, issue 12, 1-16

Abstract: This paper describes a method to estimate conservation voltage reduction (CVR) factors using data measured in power distribution systems. A direct method is proposed to estimate CVR factors using only data measured at the moment of the transformer tap change. The mean absolute deviation (MAD) direct method is proposed to consider direct methods and load variations. The proposed methods do not necessitate intentional tap changes for testing purposes. Instead, the voltage and load changes that occur when the tap changes, for voltage regulation purposes, are measured and utilized in the CVR factor calculation. The proposed methods were tested using data obtained from the Korea Electric Power Corporation (KEPCO) system, and the results revealed that CVR factors for both active power and reactive power could be estimated using data measured in power distribution systems. Results of the CVR factor estimation for the active power revealed that the highest CVR factors occurred in winter, during which a large quantity of heating loads exist. In addition, the estimated CVR factors for the reactive power were higher than the estimated CVR factors for the active power because reactive power is more sensitive to voltage changes.

Keywords: conservation voltage reduction; CVR factor; distribution system; estimation; load; measurement (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/10/12/2148/pdf (application/pdf)
https://www.mdpi.com/1996-1073/10/12/2148/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:10:y:2017:i:12:p:2148-:d:123049

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().