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EARTHQUAKE ›› 2014, Vol. 34 ›› Issue (3): 132-139.

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Influnce Charactersistics of High V oltage Direct Current Transmission on Geomagnetic Observation

JIANG Yan-lin1, ZHANG Xiu-xia2, YANG Dong-mei3, CHEN Jun4, ZHAO Wei-hong1, ZHANG Qian1, WANG Fu-cai1   

  1. 1. Gaoyou Seismic Station, Earthquake Administration of Jiangsu Province, Gaoyou 225601, China;
    2. Earthquake Administration of Jiangsu Province, Nanjing 210014, China;
    3. Institute of Geophysics, CEA,Beijing 100081,China;
    4. Mengcheng Seismic Station, Earthquake Administration of Anhui Province, Mengcheng 233500,China
  • Received:2013-08-27 Revised:2013-12-06 Online:2014-07-31 Published:2020-09-08

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Abstract: High voltage direct current transmission ( HVDC) failure can affect the geomag-netic observation data in a large range and causes much trouble to data processing. With the number of HVDC projects growing,the problem has become even more acute in recent years. In order to produce reliable geomagnetic observation data, the relationship between HVDC failure and its characteristics on geomagnetic observation data should be known, although it is difficult to identify interferences from the HVDC failure. By conducting a comprehensive analysis on the large data set, four characteristics were obtained and intro-duced in this paper, which would provide an effective method for the observer to identify and judge the interferences on geomagnetic observation data caused by the H VDC failure.

Key words: Geomagnetic observation, HVDC, Characteristics

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