林秀娜^1,,
曲保安^1,,,
范晓勇²,
陈洪凯¹,
于庆民¹,
赵银刚³
1. 山东省地震局泰安基准地震台, 山东泰安 271000
2. 中国地震局地球物理研究所, 北京 100081
3. 潍坊市地震局安丘地震台, 山东潍坊 262100

基金项目: "十二五"国家科技支撑计划项目（2015BAK18B02）和中国地震局三结合项目（CEA-JC/3JH-161504）联合资助


详细信息

作者简介: 林秀娜, 女, 1982年生, 主要研究方向为地球物理数据处理.E-mail:529586981@qq.com

通讯作者: 曲保安, 男, 高级工程师, 主要研究方向为地震电磁信号处理.E-mail:baoan515@163.com

中图分类号: P318

收稿日期:2018-04-06
修回日期:2020-04-30
上线日期:2020-10-05

Characteristics of interference from HVDC transmission to the horizontal component and magnetic declination of the geomagnetic field

LIN XiuNa^1,,
QU BaoAn^1,,,
FAN XiaoYong²,
CHEN HongKai¹,
YU QingMin¹,
ZHAO YinGang³
1. Taian Fiducial Seismic Station, Earthquake Administration of Shandong Province, Taian Shandong 271000, China
2. Institute of Geophysics, China Earthquake Administration, Beijing 100081, China
3. Anqiu Seismic Station, Earthquake Administration of Weifang, Weifang Shandong 262100, China


More Information

Corresponding author: QU BaoAn,E-mail:baoan515@163.com

MSC: P318

--> Received Date: 06 April 2018
Revised Date: 30 April 2020
Available Online: 05 October 2020


摘要
摘要:以受宁东线高压直流（HVDC）输电干扰相对严重的11个地磁台站为主要研究对象，以蒙城台为干扰幅度量取的参考台站，研究了地磁场水平分量H、磁偏角D受HVDC输电的干扰特征.发现H和D受HVDC输电干扰具有同步性和偏向性；同一HVDC输电线路两侧H和D干扰幅度具有线性关系，但线性关系明显弱于垂直分量Z干扰幅度的比例关系；接地极附近台站各自的Z、H、D干扰幅度具有线性关系.之后对H和D干扰产生的机理进行了深入的定性分析.根据得到的干扰特征的结论，提出了以红山台Z、H、D为输入的本研究相关台站的Z、H、D为输出的自动计算方法.经过误差分析，本方法平均误差水平低于国家地磁学科中心当前使用算法误差水平，最高降幅达42.9%.
关键词: 地磁场水平分量H/
磁偏角D/
宁东线/
HVDC输电/
干扰特征

Abstract:Taking eleven geomagnetic stations as the research object, this paper analyzes the characteristics of interference from HVDC to the horizontal component and magnetic declination of the geomagnetic field. This severe interference is produced by the Ningdong High-Voltage Direct Current (HVDC) transmission line. In the analysis, Mengcheng is the reference station to measure interference amplitudes of the eleven stations. The results indicate that the H and D interferences by HVDC transmission have synchronism and directionality. The amplitudes of a same HVDC transmission line are linearly dependent. However the linear relationship is weaker than that of Z component. Z,H and D interference amplitudes of stations nearby ground the electrode are linearly dependent. Then, we make an in-depth qualitatively analysis to the mechanism of H and D interference. On the grounds of analysis conclusions, we propose an automatic calculation method which takes the Z,H and D interference amplitudes of the Hongshan station as input and those of other stations as output. The error analysis shows that the average error is significantly less than that of National Geomagnetism Network Center automatic publishing system, with the largest error decrease up to 42.9%.
Key words:Horizontal component of the geomagnetic field/
Magnetic declination/
Ningdong line/
HVDC transmission/
Interference characteristics



PDF全文下载地址:

http://www.geophy.cn/data/article/export-pdf?id=dqwlxb_15635