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中文摘要：
为了比较研究雷电浪涌对直流电源注入冲击效应和辐照效应，对开关电源和集成稳压电源2种直流电源，根据国际标准进行了雷电浪涌的注入效应试验，并采用自制的平行板传输室辐照装置进行了LEMP辐照效应试验。试验结果表明．2种方法并不相关，在评价电源的雷电效应时，不仅要考虑受直击雷的影响，还要考虑雷电电磁感应的影响。
英文摘要：
Power supply circuit is the chief way in which the lightning disturbances enter the electric system, and lightning surge may be caused by direct lightning strikes, and also may be caused by lightning electromagnetic induction. Two types of familiar DC power, switching power and integrated voltage regulator （IVR） power are selected as study objects. According to IEC standard, injection experiments of lightning surge to power circuits is made, and use LEMP radiation setup composed of EMP generator and parallel plate transmission cell（PPTC） is used for radiation experiments of lightning EMP to power circuits. Some results are gained by experiments： in radiation experiments, the voltage waves on DC output port of the two types of power are similar, which are a segment of high-frequency fluctuation with duration of 1～1.5μs adding on DC voltage, but at the same radiation field strength, fluctuation amplitude of IVR power is larger than that of switching power circuit, this result shows the immunity of switching power against LEMP radiation is stronger. Meanwhile, in injection experiments, the voltage waves on DC output port of the two type of power are different, the output disturbance wave of IVR power is a segment of high-frequency fluctuation with duration of 1～ 1.5μs, and that of switching power is two segments of oscillating waves. The first segment continues more than 10μs, and the second segment is later than the first segment 40～ 80μs and continues several seconds. At the same injection voltage, the fluctuation of DC output wave of switching power is larger than that of IVR power, this result shows that the immunity of IVR power circuit from EMP conduction disturbance excel that of switching power circuit. By comparing the results gained by two methods. A conclusion is drawn that injection method and radiation method are irrelevant, and not only injection effects but also radiation effects should be considered to estimate lightning effects.
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