摘要
为了研究近距离强雷电电磁脉冲对内浮顶油罐的耦合效应,对2019年6月30日、2019年7月7日和2019年7月22日的3次内浮顶油罐模型人工触发闪电试验中的观测数据进行分析。试验结果表明:1)在内浮顶油罐模型接地的情况下,T1704的6次回击引起的地电位抬升电压峰值范围为-1 666.7 V至-12 500.0 V,相应的罐壁与浮盘间的电位差峰值在-4 750.0 V至-16 083.0 V之间。罐壁与浮盘间的电位差主要受地网地电位抬升的影响,可能造成油罐雷击火灾事故。2)T1455的5次回击对应的穿槽屏蔽信号线上的感应过电压峰值范围为-4 650.0 V至-8 269.7 V,不穿槽屏蔽信号线上的感应过电压峰值在-4 081.3 V至-7 447.9 V之间。屏蔽信号线上耦合的感应过电压极易造成油罐区仪器仪表中的信号采集与处理芯片等电子元器件失效或烧毁。3)T1804的4次回击引起的零线上的感应过电压峰值范围为-3 433.3 V至-6 466.7 V,而浪涌保护器(SPD)则将火线上的感应过电压限制在700~800 V之间。输电线路上耦合的感应过电压可以达到几千伏,超过电子信息设备所能承受的耐冲击电压额定值,从而导致油罐区仪器仪表损坏。在信号线端口和电源端口安装SPD能够对油罐区仪器仪表起到保护作用。
In order to study the coupling effect of intensivelightning electromagnetic pulse(LEMP) on anearby internal floating oil tank, we analyzed theobservation data obtained from three artificially triggered lightning experiments on June 30, 2019, July 7, 2019 and July 22, 2019, respectively. The results show that: 1) In the case of the internal floating oil tank model grounding, the peak values of the ground potential rise(GPR) voltages related to 6 return strokes of T1704 range between-1 666.7 V and-12 500.0 V, and the corrsponding potential differences between the tank wall and the floating plate vary in the range of-4 750.0 V to-16 083.0 V, which are mainly caused by the GPR and canlead to the lightning fire accidents. 2) The peak values of the lightning-induced overvoltages related to 5 return strokes of T1455 on the shielded signal wire inside metallic enclosure range from-4 650.0 V to-8 269.7 V, and the overvoltages without metallic enclosure vary between-4 081.3 V to-7 447.9 V, which result in damage to the electronic components such as the signal acquisition and processing chips in the instruments and apparatus of the internal floating oil tank. 3) The peak values of the lightning-induced overvoltages related to 4 return strokes of T1804 on the neutral wire of the power cord vary from-3 433.3 V to-6 466.7 V, whereas the use of surge protective device(SPD)can effectively limit the overvoltages on the phase wire of the power cord to the range between 700 V and 800 V. The lightning-induced overvoltage coupled on the power cord has several kilovolts and exceeds the rated impulse withstand voltage of the electronic information equipment and causes damage to the instruments and apparatus.SPD installed at signal port and power port can be used to protect the instruments and apparatus from the lightning.
作者
陈思学
孙秀斌
李哲
娄仁杰
陈绍东
张义军
CHEN Sixue;SUN Xiubin;LI Zhe;LOU Renjie;CHEN Shaodong;ZHANG Yijun(Dalian Branch of CNPC Research Institute of Safety&Environment Technology,Dalian 116033,China;Chengdu University of Information Technology,Chengdu 610225,China;Hainan Meteorological Observation Center,Haikou 570203,China;Guangzhou Institute of Tropical and Marine Meteorology,China Meteorological Administration,Guangzhou 510080,China;Institute of Atmospheric Sciences,Fudan University,Shanghai 200433,China)
出处
《电瓷避雷器》
CAS
北大核心
2022年第3期8-18,共11页
Insulators and Surge Arresters
基金
国家重点研发计划项目(编号:2017YFC1501505)
中国石油集团安全环保技术研究院项目(编号:2017D-5008)。
关键词
人工触发闪电
内浮顶油罐
雷电电磁脉冲
耦合
感应过电压
浪涌保护器
artificially triggered lightning
internal floating oil tank
LEMP
coupling
lightning-induced overvoltage
SPD
