磁暴对沿海核电站变压器安全影响的研究  

Study on the Impact of Magnetic Storm on Security of Transformers in Coastal Nuclear Plants

作　　者：刘连光[1,2] 原丽[1,3] 王智冬[1] 郑宽[1] 冯学尚[2] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]中国科学院空间天气学国家重点实验室,北京100190 [3]国家核电技术公司核电大学,北京100029

出　　处：《中国安全科学学报》2011年第5期104-108,共5页China Safety Science Journal

基　　金：国家国际科技合作计划(2010DFA64680);空间天气学国家重点实验室基金资助(Y12629A49S)

摘　　要：磁暴产生的地磁感应电流(GIC)直接损伤变压器和间接干扰继电保护等设备,强磁暴可能威胁到电网的安全运行。为探明磁暴对沿海核电站变压器的影响,对第23太阳周峰年强磁暴侵害广东岭澳核电站、江苏上河变电站的GIC测量数据,以及西北陕甘青宁750 kV电网计算数据进行统计分析,研究沿海核电站与内陆变电站变压器GIC大小及其差异原因。结果表明,由于受海岸效应现象的影响,沿海核电站的变压器更容易遭受磁暴的侵害。在此基础上,对极端磁暴的可能危害、灾害风险以及沿海核电站的磁暴灾害进行评估,并建议核电站选址和变压器选型时应评估磁暴的影响。The geomagnetically induced current（GIC） caused by magnetic storm would damage transformers directly and disturb relay protections or some other equipments indirectly,and strong magnetic storm could threaten the security of power system.For verifying the magnetic storm impact on the transformers in coastal nuclear plants,a mass of GIC data was collected and statistically analyzed,which included the measured GIC data in Guangdong Ling＇ao nuclear power plant and Jiangsu Shanghe substation and the calculated GIC data in Northwest 750 kV power grid（all the data above happened at the peak of 23rd solar cycle during the strong magnetic storm）.The differences of the transformer＇s GIC between coastal nuclear power plant and inland substation and their reasons were mainly studied.The result indicates that the transformers in coastal nuclear power plants are more vulnerable to the magnetic storm impact due to the influence of the coastal effect.On this basis,the possible impacts and risks of extreme magnetic storm on the large-scale power system are assessed preliminarily,and it is suggested that the impact of magnetic storm should be assessed while selecting nuclear power plant＇s location and transformer＇s type.

关 键 词：核电站 磁暴 变压器 电网安全 海岸效应 

分 类 号：X946[环境科学与工程—安全科学]