Browse > Article
http://dx.doi.org/10.5762/KAIS.2018.19.5.17

Optimal Operation Algorithm of Protection Devices in Distribution Systems With PV System  

Kwon, Soon-hwan (Information School, Korea University of Technology)
Lee, Hu-dong (Information School, Korea University of Technology)
Nam, Yang-hyun (Information School, Korea University of Technology)
Rho, Dae-seok (Information School, Korea University of Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.5, 2018 , pp. 17-26 More about this Journal
Abstract
If a photovoltaic (PV) system is installed in a primary feeder interconnected with the PV system, bi-directional power flow can occur, and then, the magnitude and direction of the fault current can change, depending on the fault location and point of common coupling (PCC) of the PV system, and the time current curve (TCC) cannot be properly coordinated between protection devices. Also, it is difficult to obtain a proper time interval for protection devices because the conventional setting approach is applied, even though the PV system is installed and operating. Therefore, this paper presents three operation modes considering the operational conditions of the PV system to obtain setting values for protection devices. Based on the mode, this paper proposes an algorithm to calculate the optimal protection coordination time interval according to the introduction capacity of the PV system. In addition, this paper performs modelling of a distribution system with the PV system and protection devices by using Off-DAS S/W, and analyzes the characteristics of the time interval between the protection devices, such as substation relays, reclosers, customer relays, and PV customer relays. The simulation results confirmed that the proposed operational modes and setting-value algorithms are useful and effective for protection coordination in a distribution system for a PV system.
Keywords
Distribution System; Over Current Ground Relay(OCGR); Over Current Relay(OCR); Photovoltaic System; Protection Coordination;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 A. Girgis, S. Brahma, "Effect of Distributed Generation on Protective Device Coordination in Distribution System", Power Engineering, LESCOPE '01. 2001 Large Engineering Systems Conference, 11-13, pp. 115-119, July, 2001. DOI: https://doi.org/10.1109/LESCPE.2001.941636
2 Dae-seok Rho, "Countermeasures on bi-directional Protective Device Coordination of smart grid connected to new energy generation", The world of electric, vol. 5, no. 9, pp. 39-43, 2010.
3 So-Hee Kim, Dae-seok Rho, "Development of Operation System for Customer Protection Devices with Distributed Generation", Korea Academia-industrial cooperation society, announced Fall conference proceedings in 2010, pp. 62-65, nov. 2010.
4 IEEE 1547.1 "IEEE Standard conformance Test Procedures for Equipment Interconnecting Distributed Resources with Electric Power System", J. IEEE June, 2005. DOI: https://doi.org/10.1109/IEEESTD.2005.96289
5 So-Hee Kim and Dae-seok Rho, "Evaluation Algorithm for Coordination Protection Between Recloser and Distributed Generation Relay", Korea Academia-industrial cooperation society, announced Spring conference proceedings in 2010, pp. 69-72, May, 2011.
6 Byeon-Gi Kim, Jae-Beom Park, Kyeong-Sang You, Dae-Seok Rho, "Optimal Operation Methods of Protection Devices in Distribution Systems with PV Systems", The Korean Institute of Electrical Engineers, vol. 60, no. 8, pp. 1485-1491, Aug. 2011. DOI: https://doi.org/10.5370/KIEE.2011.60.8.1485   DOI
7 Korea Electric Power Research Institute, "Distribution Protection Description", pp. 70-91, Oct. 2008.
8 Se-Young Pyo, Oh-Seok Kwon, Kee-Hwan Kim, A Study on Efficient Management of Solar Powered LED Street Lamp Using Weather forecast, The Journal of The Institute of Internet, Broadcasting and Communication (IIBC), Vol. 15, No. 2, pp. 129-135, Apr. 2015. DOI: http://dx.doi.org/10.7236/JIIBC.2015.15.2.129   DOI
9 Guideline for Interconnection of Distributed Generation System in Distribution Systems, KEPCO, June, 2012.
10 Sung-Ho Hwang, Eun-Young Kang, Performance Analysis of IEEE 802.15.4 for D1 Small Distribution Substation, The Journal of The Institute of Internet, Broadcasting and Communication (IIBC), Vol. 17, No. 1, pp.115-121, Feb. 2017. DOI: https://doi.org/10.7236/JIIBC.2017.17.1.115   DOI
11 Daeseok Rho, "A Study on the Fault Characteristics of Wind Power in Primary Feeder", Journal of KAIS, vol. 13, no. 3, pp. 1288-1295, March, 2012.
12 R. F. Arritt, R. C. Dugan "Distributed generation interconnection transformer and grounding selection", Power and Energy Society General Meeting-Conversion and Delivery of Electrical Energy in the 21st Century, IEEE. pp. 1-7, 2008. DOI: https://doi.org/10.1109/PES.2008.4596772