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HVDC System 적용 Double-tuned 필터의 설계 방법 연구
이희진(Hee-Jin Lee),남태식(Tae Sik Nam),손금태(Gum Tae Son),박정욱(Jung-Wook Park),정용호(Yong-Ho Chung),이욱화(Uk-Hwa Lee),백승택(Seung-Taek Baek),허견(Kyeon Hur) 대한전기학회 2012 전기학회논문지 Vol.61 No.9
The ac side current of an high voltage direct current (HVDC) converter is characterized by highly non-sinusoidal waveform. If the harmonic current is allowed to flow in the connected ac system, it may cause unacceptable levels of distortion. Therefore, ac side filters are required as part of the total HVDC converter station, in order to reduce the harmonic distortion of the ac side current and voltage to acceptably low levels. The ac side filters are also employed to compensate network requested reactive power because HVDC converters also consume substantial reactive power. Among different types of filters, double-tuned filters have been widely utilized for HVDC system. This paper presents two design methods of double-tuned filter; equivalent method and parametric method. Using a parametric method, in particular the paper proposes a new design algorithm for a realistic system. Finally, the performance of the design algorithm is evaluated for a 80㎸ HVDC system in Jeju island with PSCAD/EMTDC program. The results cleary demonstrate the effectiveness of proposed design method in harmonics elimination and steady-state stability.