2MVA SSFG(Sag Swell Flicker Generator) Development for Actual Test of Custom Power Device

전력품질 향상기기의 실증시험을 위한 2MVA SSFG(Sag Swell Flicker Generator) 개발

  • Published : 2005.12.01

Abstract

This paper proposes a new 2MVA SSFG(Sag Swell Flicker Generator) injecting voltage by using series inverter. The proposed SSFG composes series inverter, DC capacitor as energy storage, rectifier and voltage clamp circuit. This SSFG is designed to generate typical power disturbances, such as voltage sag/swell, over/under voltage and voltage flicker. Also it is designed to generate unexpected voltage phase jumping waveform by controlling the series inverter. In this paper, three kinds of control methods for the proposed 2MVA SSFG we investigated by PSIM simulation. Also typical voltage sag, swell, flicker waveforms are implemented by adopting effective control method.

본 논문에서는 직렬인버터를 이용한 2MVA SSFG(Sag Swell Flicker Generator)를 제안하였으며, 제안된 SSFG는 직렬인버터, DC 커패시터, 정류기, 클램프회로 등으로 구성되어 있다. SSFG는 선로에 순간전압강하/상승(sag/swell), 과전압/저전압(over/under voltage), 플리커(Flicker)등과 같은 전형적인 외란을 발생할 수 있을 뿐만 아니라, 인버터의 제어를 통해 상 뒤틀림(phase jump)도 구현 가능하다. 본 논문에서 제안된 2MVA SSFG의 효과적인 제어를 위해 세 가지 형태의 제어방식을 PSIM 시뮬레이션을 통해 비교${\cdot}$검토하였으며, 이 중 가장 효과적인 제어방식을 2MVA SSFG에 적용하여 순간전압강하, 순간전압상승, 플리커 등과 같은 외란발생 시험을 수행하였다.

Keywords

References

  1. Math H.J. Bollen, 'Understanding Power Quality Problems - Voltage Sags and Interruptions', IEEE Press, 2000, pp2-5
  2. N.G. Hingorani and L. Gyugyi, 'Understanding FACTS', IEEE Press, 2000, pp 19
  3. Y.H. Chung, G.H. Kwon, TE. Park, KY. Lim, 'Voltage Sag and Swell Generator with Thyristor Controlled Reactor', IEEE PowerCon 2002, Kunming, China, pp 1933-1937
  4. Y.R. Chung, G.H. Kwon, T.B. Park, K. Y Lim, 'Voltage Sag and Swell Generator with Solid-State Switched Tap Changer', EPE 2003 - Toulouse, Paper #1072
  5. T. Kawabata, Y. Shikano and S. Higashino, et.al., 'Chargeless UPS using Multi-functional BIMOS Inverter', IEEE-IAS-Coni, 1986, pp 513-520
  6. H.J. Cha, S.S. Kim, K.M. Kang and YH. Chung, 'Real-time Digital Control of PWM Inverter with PI Compensator for UPS', IEEE IECON-1990, PP 1124-1128