铁道通信信号
鐵道通信信號
철도통신신호
RAILWAY SIGNALLING & COMMUNICATION
2012年
7期
6-8
,共3页
范婷霞%宗伟%刘连光%蒋智化
範婷霞%宗偉%劉連光%蔣智化
범정하%종위%류련광%장지화
磁暴%地磁感应电流(GIC)%轨道电路
磁暴%地磁感應電流(GIC)%軌道電路
자폭%지자감응전류(GIC)%궤도전로
Geomagnetic storms%Geomagnetic induced current%Track circuits
磁暴是太阳活动时磁层一电离层的电流体系和地球磁场的相互作用而产生的,磁暴来袭时,时变磁场将在地面感应出电场,在一些技术系统(铁路设备、输电线路、石油和天然气管道等)中产生地磁感应电流(GIC),干扰了这些系统的正常工作。对1982年7月13-14日强磁暴期间瑞典一些铁路区段轨道电路出现的异常,以及1989年和2000-2005年强磁暴期间俄国北部一些铁路区段出现的异常进行了描述,并对该磁暴期间产生这些异常的影响因素进行了分析;最后提出为进一步了解磁暴影响轨道电路机理还需要做的工作。
磁暴是太暘活動時磁層一電離層的電流體繫和地毬磁場的相互作用而產生的,磁暴來襲時,時變磁場將在地麵感應齣電場,在一些技術繫統(鐵路設備、輸電線路、石油和天然氣管道等)中產生地磁感應電流(GIC),榦擾瞭這些繫統的正常工作。對1982年7月13-14日彊磁暴期間瑞典一些鐵路區段軌道電路齣現的異常,以及1989年和2000-2005年彊磁暴期間俄國北部一些鐵路區段齣現的異常進行瞭描述,併對該磁暴期間產生這些異常的影響因素進行瞭分析;最後提齣為進一步瞭解磁暴影響軌道電路機理還需要做的工作。
자폭시태양활동시자층일전리층적전류체계화지구자장적상호작용이산생적,자폭래습시,시변자장장재지면감응출전장,재일사기술계통(철로설비、수전선로、석유화천연기관도등)중산생지자감응전류(GIC),간우료저사계통적정상공작。대1982년7월13-14일강자폭기간서전일사철로구단궤도전로출현적이상,이급1989년화2000-2005년강자폭기간아국북부일사철로구단출현적이상진행료묘술,병대해자폭기간산생저사이상적영향인소진행료분석;최후제출위진일보료해자폭영향궤도전로궤리환수요주적공작。
Geomagnetic storms is the result of magnetospheric-ionospheric currentg interaction with earth g magnetic field during solar activity. When geomagnetic storms come, the varying magnetic field will in- duce electric field on the ground and generate geoelectric currents in some technical systems, such as railway equipment, power transmission grids, and oil and gas pipelines. The geomagnetical induced cur- rents (GIC) will cause problems in these systems. In this paper, we describe some railway track circuit problems during strong geomagnetic storms on 13 -14 July 1982 in Swedish and the abnormalities occur- ring to the northern railways in Russia during strong geomagnetic storms in 1989 and the period of time from 2000 to 2005. We analyzed the reasons about these abnormalities and put forward the work to be clone in the further in order to further understand the influences of geomagnetic storms on track circuits.