조명전기설비학회논문지 (Journal of the Korean Institute of Illuminating and Electrical Installation Engineers)

  • 제28권9호
  • /
  • Pages.52-59
  • /
  • 2014
  • /
  • 1229-4691(pISSN)
  • /
  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
권호 표지
DOI QR코드

DOI QR Code

22.9kV 수전설비에서 측정된 과도과전압의 특성

Features of Transient Overvoltages Observed at 22.9kV Consumer's Substation

  • 심해섭 (기상청 국가기상위성센터 위성기획과) ;
  • 이복희 (인하대학교 IT공대 전기공학부)
  • Shim, Hae-Sup (National Meteorological Satellite Center) ;
  • Lee, Bok-Hee (School of Electrical Engineering, Inha University)
  • 투고 : 2014.06.23
  • 심사 : 2014.07.18
  • 발행 : 2014.09.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The aims of this paper are to characterize the transient overvoltages(TOVs) and to evaluate the risk occurring at 22.9kV consumer's substation. The measurements of lightning- and switching-caused TOVs were made during Mar. 2013 and Feb. 2014. As a consequence, 47 events of TOVs were recorded and 4 of them were higher than the input voltage envelope(IVE) of the information technology industry council(ITI) curve. The measured TOVs are characterized by longer front times and longer durations compared to the $1.2/50{\mu}s$ standard impulse voltage waveform, and some of them represent bipolar waves with lower oscillation frequencies. It suggests that the test of non-standard impulse voltage waveforms is needed for effective risk assessments of power apparatus. Lightning- and switching-caused TOVs exceeding IVE of ITI curve are induced at the secondary of 22.9kV potential transformer(PT). We may, therefore, conclude that the surge protection devices should be applied at the secondary of PT and the surge absorbers should be installed at the primary of VCB or PT. The results presented in this paper could be useful to design the reasonable insulation coordination for 22.9kV consumer's substation.

키워드

참고문헌

  1. V. Cooray, The Lightning Flash, MPG Books Ltd., pp.481-501, 2003.
  2. K. Denno, High Voltage Engineering in Power Systems, CRC Press Inc., pp.1-17, 1992.
  3. P. Chowdhuri, Electromagnetic Transients in Power Systems, 2nd Ed., Research Studies Press Ltd., pp.1-4, 2004.
  4. R. C. Dugan, M. F. McGranaghan, S. Santoso, H. W. Beaty, "Electrical Power Systems Qulity", 3th ed., McGraw-Hill, New York, pp.137-195, 2012.
  5. J. C. Das, "Transients in Electrical System", McGraw-Hill, New York, 2010, pp.382-389.
  6. M. Fernando, V. Cooray, "Lightning Surges at Distributed Transformer Secondary", 5th ICIIS, India, June 2010, pp.532-537.
  7. EPRI Reserch report, EPRI TR-100218, "Characteristics of Lightning Surges on Distribution Lines - Final Report", Prepared by Power Technologies, Inc., December 1991.
  8. Korea Meteorological Administration, Annual Lightning Report, p.57, 2014.
  9. IEC Std 61000-4-30, "Testing and measurement techniques power quality measurement methods", 2003.
  10. ITI (CBEMA) Curve Application Note, Information Technology Industry Council (ITI) 1250 Eye Street NW, Suite 200, Washington DC 20005 http://www.itic.org/technical/iticurv.pdf, revised 2000.
  11. http://mis.inf.kma.go.kr.
  12. H. S. Shim and B. H. Lee, "Construction and Operation Characteristics of the Automated Lightning Warning System Based on Detections of Cloud-to-Ground Discharge and Atmospheric Electric Field", J. KIIEE, Vol.27, No.11, pp.82-88, 2013. https://doi.org/10.5207/JIEIE.2013.27.11.082
  13. A. J. Hayter, "Probability and Statistics for Engineers and Scientists", 3th ed., CENGAGE Learning Korea, Seoul, 2009, pp.1-168.
  14. IEEE Std 1159.1, "Guide For Recorder and Data Acquisition Requirements For Characterization of Power Quality Events", 2000.
  15. IEC Std 60044-2, "Inductive voltage transformer", 2003.
  16. D. D. Shipp, T. J. Dionise, V. Lorch, and G. William, "Vacuum Circuit Breaker Transients During Switching of an LMF Transformer", IEEE Transaction on Industry Applications, vol. 48, n. 1, Jan/Feb. 2012.