고차 구성의 개선된 직류 옵셋 제거 필터

다국어 초록 (Multilingual Abstract)

Fault currents are expressed as a combination of harmonic components and exponentially decaying DC offset components, during the occurrence of fault in power system. The DC offset components are included, when the voltage phase angle of fault inception is closer to 0° or 180°. The digital protection relay should be detected quickly and accurately during the faults, despite of the distortions of relaying signal by these components. It is very important to implement the robust protection algorithm, that is not affected by DC offset and harmonic components, because most relaying algorithms extract the fundamental frequency component from distorted relaying signal. So, In order to high performance in relaying, advanced DC offset removal filter is required. In this paper, a new DC offset removal filter, which is no need to preset a time constant of power system and accurately estimate the DC offset components with one cycle of data, is proposed, and compared with the other filter. In order to verify performance of the filter, we used collecting the current signals after synchronous machine modeling by ATPDraw5.7p4 software. The results of simulation, the proposed DC offset removal filter do not need any prior information, the phase delay and gain error were not occurred.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 직류옵셋 제거필터
• 3. 사례연구
• 4. 결론
• 감사의 글
• 참고문헌
• 저자소개

참고문헌 (Reference)

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15 박철원, "ATPDraw5.7p4 모델링 데이터를 이용한 전압억제 과전류계전기 동작특성에 관한 연구" 대한전기학회 61 (61): 23-28, 2012