摘要
通过在实验室内搭建多级SPD以及SPD与被保护设备的线路模型,研究了不同的配置环境(如改变上下两级SPD之间的电缆长度、改变入侵的电涌波形和改变被保护设备的特性等)对于多级SPD之间以及SPD与保护设备之间能量配合和电压保护水平配合的效果。实验结果表明:SPD之间的电缆长度会影响下级SPD的能量分配和残压大小;侵入的电涌波形会改变SPD残压的大小以及引起线路上电涌波形的畸变;被保护设备的阻抗会改变下级SPD和被保护设备之间的能量分配。
An experimental study are conducted by setting up an experimental loop model with SPDs and EUP （Equipment under protection） to investigate the different impact of the SPD configurations, such as cable length between the upstream and downstream SPDs, surge waveforms and characteristics of the protected equipment. The experimental results show that the cable length between SPDs will change the energy distribution and voltage protection of SPDs; the waveform of incoming surges will change the residual voltage of SPD and cause the distortion of wave in the loop; the resistance of the EUP will change the energy distribution between the downstream SPD and EUP.
出处
《电瓷避雷器》
CAS
北大核心
2014年第5期87-93,共7页
Insulators and Surge Arresters
