스위칭 특성을 고려한 전류형 HVDC 시스템의 댐핑회로 설계 적정성 검토

다국어 초록 (Multilingual Abstract)

This paper deals with the evaluation on the design of thyristor snubber circuit for LCC(Line Commutated Converter) HVDC system. Snubber circuit consists of capacitance and resistance to protect thyristor in HVDC system. Based on turn off model, mathematical expressions are derived by considering the maximum device stress, maximum reverse dv/dt, and reverse energy loss of a power device. The total turn-off loss in the device with the associated snubber circuit is considered as stray inductance. In the case of determining ratio between resistance and capacitance, it is important to reflect their relation and the purpose of protecting thyristor. Considering these analytical solutions to 500kV HVDC system in Korea, we can calculate the range of maximum and minimum rate of the thyristor snubber circuit. This study can be applied to review the design of thyristor snubber circuit of HVDC projects.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 싸이리스터 오프상태 특성 : 기본이론
• 3. 싸이리스터 턴온 상태 특성 : 기본이론
• 4. 500kV HVDC 시스템의 댐핑회로 설계 적정성 검토 절차
• 5. 결론
• References

참고문헌 (Reference)

1 G. N. Revankar, "Turnoff model of an SCR" IECI-22 (IECI-22): 1975

2 Kwon-Ho Kim, "Turn off Model of a Thyristor and Optimum Design of a Thyristor Snubber Circuit" 42 (42): 1993

3 P. D. Taylor, "Thyristor Design and Realization"

4 William Mcmurray, "Optimum Snubber for Power Semiconductors" IA-8 (IA-8): 593-600, 1972

5 E. W. Kimbark, "Direct Current Transmission vol. I" Wiley-Interscience 1971

6 M. L. Woodhouse, "Design proving Tests on a valve for the English terminal of the Cross-Channel HVDC Scheme" 1985

7 Chang-Woo Lee, "Design of a Thyristor Snubber Circuit by Consideraing the Reverse Recovery Process" 3 (3): 1988

8 N. M. Macleod, "Design and Testing of Thyristor Valves for 800kV HVDC Projects" 2007

9 Stephen Williamson, "Calculation of Power losses in Thyristor Converters" IE-31 (IE-31): 1984

10 Chang-Woo Lee, "An Optimum Parameter Determination for the SCR Turn off Model" 1018-1021, 1987

11 "500kV HVDC 변환설비 “밸브 설계 및 검토 보고서”" KAPES 2014

12 "500kV HVDC 변환설비 “HVDC 밸브 손실 보고서”" KAPES 2014