Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System
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...
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MDPI AG
2017-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/10/12/2148 |
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| author | Kwan-Shik Shim Seok-Il Go Sang-Yun Yun Joon-Ho Choi Won Nam-Koong Chang-Hoon Shin Seon-Ju Ahn |
| author_facet | Kwan-Shik Shim Seok-Il Go Sang-Yun Yun Joon-Ho Choi Won Nam-Koong Chang-Hoon Shin Seon-Ju Ahn |
| author_sort | Kwan-Shik Shim |
| collection | DOAJ |
| description | 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. |
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| id | doaj.art-62f47bc9f7dd4783a8b69d869194f008 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T11:54:07Z |
| publishDate | 2017-12-01 |
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| series | Energies |
| spelling | doaj.art-62f47bc9f7dd4783a8b69d869194f0082022-12-22T04:25:12ZengMDPI AGEnergies1996-10732017-12-011012214810.3390/en10122148en10122148Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO SystemKwan-Shik Shim0Seok-Il Go1Sang-Yun Yun2Joon-Ho Choi3Won Nam-Koong4Chang-Hoon Shin5Seon-Ju Ahn6Department of Electrical Engineering, Chonnam National University, Gwangju 61186, KoreaDepartment of Electrical Engineering, Chonnam National University, Gwangju 61186, KoreaDepartment of Electrical Engineering, Chonnam National University, Gwangju 61186, KoreaDepartment of Electrical Engineering, Chonnam National University, Gwangju 61186, KoreaEnergy System Group Energy New Business Laboratory, Korea Electric Power Research Institute, Daejeon 34056, KoreaEnergy System Group Energy New Business Laboratory, Korea Electric Power Research Institute, Daejeon 34056, KoreaDepartment of Electrical Engineering, Chonnam National University, Gwangju 61186, KoreaThis 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.https://www.mdpi.com/1996-1073/10/12/2148conservation voltage reductionCVR factordistribution systemestimationloadmeasurement |
| spellingShingle | Kwan-Shik Shim Seok-Il Go Sang-Yun Yun Joon-Ho Choi Won Nam-Koong Chang-Hoon Shin Seon-Ju Ahn Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System Energies conservation voltage reduction CVR factor distribution system estimation load measurement |
| title | Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System |
| title_full | Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System |
| title_fullStr | Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System |
| title_full_unstemmed | Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System |
| title_short | Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System |
| title_sort | estimation of conservation voltage reduction factors using measurement data of kepco system |
| topic | conservation voltage reduction CVR factor distribution system estimation load measurement |
| url | https://www.mdpi.com/1996-1073/10/12/2148 |
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