变电站开关动作瞬间电磁干扰的研究与分析

Research and Analysis of Transient Electromagnetic Interference in Substation Switching Operation

随着智能变电站的建设的不断深入,变电站内的电子设备不断增多,由于大量高电压大电流设备的存在,变电站内部的电磁环境非常复杂,很容易对这些电子设备造成干扰,影响其正常运行。在实际运行中发现,变电站的开关动作瞬间会造成比较大的电网冲击,形成较高频率电磁波,具有很强的干扰能力,严重影响电力系统可靠运行。本文通过对变电站内开关动作瞬间的电压和电流分布的计算,对暂态电磁干扰进行了分析,讨论了其对系统的影响,并对暂态干扰的防护提出了相应的措施。

Along with the deepening of the construction of smart substation, there are a growing number of electronic equipments in substation, due to the existence of a large number of high voltage and high current equipment, it is very complicated electromagnetic environment of the substation, easily on these electronic devices cause interference, affecting its normal operation.In the actual operation, it is found that the switching action of the substation will result in a relatively large impact on the power grid, the formation of high frequency electromagnetic waves, with strong interference ability, a serious impact on the power system reliability. Through moments of action of voltage and current distribution calculation of substation switch, for the transient electromagnetic interference analysis, discussed the influence of the system, and puts forward the corresponding measures to solve transient disturbance of the door.