【摘要】 太阳磁场变化产生的地磁感应电流(GIC)直接损伤电力设备,威胁电网的运行安全。阐述了电网GIC的成因、影响以及损伤电网设备的本质,给出了不同电压等级电网GIC水平的监测数据和计算数据,比较研究了电网GIC水平和影响因素,分析了我国未来电网的灾害风险和灾害防治问题。更多还原

【Abstract】 Geomagnetically induced current(GIC) which is the result of solar magnetic field’s fluctuation can directly damage electrical equipment and threaten the safe operation of power grid.This paper explains the cause,influence of GIC,and the nature of electrical equipments damage;gives the monitoring data and calculations of GIC in different voltage levels;makes a comparative study on GIC levels in power grid and its factors;and analyze the risk and disaster prevention of our future power grid.The conclusion is of great significance to the construction and safe operation of large grid of UHV in our country.更多还原