154 kV 및 345 kV 주변압기 부싱의 내진성능 시험 연구

다국어 초록 (Multilingual Abstract)

In this study, seismic performance of bushings and their connection parts was analyzed by performing shaking table tests for various types of bushings widely used as auxiliary equipment of main transformers in domestic substations. As a result of the seismic tests of five types of 154 kV bushings according to the manufacturers, all the bushings secured the structural integrity even at the acceleration of 1.4 g and it was found that leakage of insulating oil didn't occur. Also, the average acceleration amplification rate at the upper part of the bushings was about 2.5 to 3.0 times higher than the lower one. On the other hand, when a representative 345 kV bushing was subjected to the seismic test, the structural integrity was secured even at 1.0 g acceleration similar to the design earthquake load level, but in this test, leakage of insulating oil occurred. However, when a stiffener restricting the connection of the bushing is installed in the same 345 kV bushing, the displacement of the bushing connection is controlled and the stiffener prevent the oil from leaking even at the acceleration of the designed seismic level.

목차 (Table of Contents)

• A B S T R A C T
• 1. 서 론
• 2. 시험목적 및 방법
• 2.1 시험대상 및 목적
• 2.2 시험방법
• 2.3 시험설비
• 2.4 입력운동
• 3. 154 kV 부싱의 내진시험 결과
• 3.1 가진 가속도 계측결과
• 3.2 내진시험 결과
• 3.3 부싱 연결부 변위계측 결과
• 3.4 공진탐색 시험 결과
• 4. 345 kV 부싱의 내진시험 결과
• 4.1 가진 가속도 계측결과
• 4.2 내진시험 결과
• 4.3 공진탐색 시험 결과
• 5 결 론
• REFERENCES

참고문헌 (Reference)

1 장정범, "케이블 장력 및 피뢰기의 강성 변화를 고려한 애자형 피뢰기의 동특성 시험 연구" 한국지진공학회 18 (18): 253-259, 2014

2 조양희, "진동시험에 의한 154kV 변압기 부싱의 동특성 분석 및 내진성능 평가" 한국지진공학회 10 (10): 107-115, 2006

3 장정범, "변압기의 내진성능 향상을 위한 마찰진자 면진장치의 시험 연구" 한국지진공학회 12 (12): 1-8, 2008

4 장정범, "무정전-무이설 방식의 전기판넬 내진보강시스템 시험연구" 한국지진공학회 13 (13): 1-10, 2009

5 日本電氣協會, "変電所等における電氣設備の耐震設計指針, JEAG 5003"

6 Korea Electric Power Cooperation, "Seismic design guidelines for transmission, substation and distribution facilities"

7 Institute of Electrical and Electronics Engineers, "IEEE Recommended Practice for Seismic Design of Substations, IEEE Std 693"

8 Minstry of the Interior, "Common applications of seismic design criteria"