KEPCO Journal on Electric Power and Energy

Korea Electric Power Corporation (한국전력공사)
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The Response to Impulse Signal on Three Phase Transformer using Vector Network Analyzer

벡터 회로망 분석기 측정을 기반으로 한 3상 변압기의 시간영역 펄스 신호에 대한 응답 분석

  • Kim, Kwangho (Dept. of Electrical and Electronic Eng. Sungkyunkwan Univ.) ;
  • Jung, Jongman (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Nah, Wansoo (Dept. of Electrical and Electronic Eng. Sungkyunkwan Univ.)
  • Published : 2015.09.30
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Abstract

Transformer is widely used element on power system and industrial area. Especially the transformers installed at power system are exposed to an environment of arbitrary changed. Thus the prediction of degradation and the analysis of response to impulse are important. To conduct those works, the electrical characteristics of system should be analyzed, effectively. But the analysis of electrical characteristic in electric machine level such as pole and pad-mounted transformer is almost no, thus commercial VNA (Vector Network Analyzer) is used to getting the response in wide frequency range. However, the output power of VNA is usually under 10mW, so verification for effectiveness of measuring electrically large component should be conducted, firstly. Next, after getting total S-parameter of transformer, predicting impulse response can be performed in time-domain with circuit simulator. In this paper, it is introduced that verification effectiveness of VNA using transfer function from SFRA (Sweep Frequency Response Analyzer), firstly. Next, total S-parameter, six by six matix form, was built using measured 2 port S-parameter from vector network analyzer. To get the response to impulse which is defined by IEC 60060-1, time-domain simulation is conducted to ADS (Advenced Design System) circuit simulator.

Keywords

Acknowledgement

Supported by : Korea Electrical Engineering & Science Research Institute

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