수치해석 및 진동대 실험을 통한 충전기의 캐비닛내부응답스펙트럼(ICRS) 결과 비교 = In-Cabinet Response Spectrum Comparison of Battery Charger by Numerical Analysis and Shaking Table Test

다국어 초록 (Multilingual Abstract)

The seismic capacity of electric cabinets in Nuclear Power Plants (NPPs) should be qualified before installation and be maintained during operation. However it can happen that identical devices cannnot be produced for replacement of devices mounted in electric cabinets. In case of when no In-Cabinet Response Spectrum (ICRS) is available for new devices, ICRS can be generated by using Finite Element Analysis (FEA). In this study we investigate structural response and ICRSs of battery charger which is supplied to NPPs. Test results on the battery charger are utilized in this study. The response is measured by accelerometers installed on the housing of the battery charger and local panels in the battery charger. Numerical analysis model is established based on resonant frequency search test results and validated by comparison with 2 types of earthquake testing results. ICRSs produced from the numerical model are compared with measured ICRSs in the seismic tests. Developed analysis model is a simple reduced model and anticipates ICRSs quite well as measured response in the tests overall despite of its structural limitation.

참고문헌 (Reference)

1 KOCED, "Seismic test of limit state for the charger"

2 Gupta, A, "Ritz Vector Approach for Evaluating Incabinet Response Spectra" 217 : 49-62, 1999

3 Eem, S. H., "Response Amplifi- cation of MCC Cabinets Induced by High Frequency Earthquakes" 26-27, 2017

4 "Reg. Guide 1.60 Rev.2, Design Response Spectra for Seismic Design of Nuclear Power Plants"

5 EPRI, "Guidelines for Development of In-Cabinet Seimic Demand for Devices Mounted in Electrical Cabinets"

6 Cho, S. G, "Comparative Evaluation of In-cabinet Amplification Factor for Devices Mounted in Electrical Cabinets" 27-28, 2016

7 ANSYS, Inc., "ANSYS Manual"