대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2004년도 하계학술대회 논문집 A
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- Pages.205-207
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- 2004
전력품질 향상기기의 실증시험을 위한 SSHG 개발
SSHG(Sag/swell and Harmonics Generator) Development for Actual Test of CPD(Custom Power Device)
- Kwon G. H. (LG Industrial System RSED Center) ;
- Chung Y. H. (LG Industrial System RSED Center) ;
- Kim H. J. (LG Industrial System RSED Center) ;
- Park T. B. (LG Industrial System RSED Center) ;
- Jeon Y. S. (KEPRl)
- 발행 : 2004.07.14
초록
This paper proposes a new SSHG(Sag/swell and Harmonic Generator) injecting voltage by using series inverter. The proposed SSHG composes series inverter, DC capacitor as energy storage, rectifier and voltage clamp circuit. This SSHG 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 SSHG are given. Typical voltage sag and swell waveforms are implemented by adopting simple control method. Also the voltage flicker is generated by changing the amplitude of the injected voltage in random. Owing to the limited bandwith of the proposed SSHG, high frequency transient waveforms can be obtained by using the open loop control. The simulation and experimental results are given to verify the operation of the proposed SSHG, Finally, conclusions are given.
키워드