上海地区110 kV户内变电站电磁环境影响分析

An Analysis on Electromagnetic Environment Impact of 110 kV Indoor Substations in Shanghai

对上海市6所典型110kV全户内变电站的站界工频电磁场检测数据进行对比分析发现,110kV全户内变电站站界处工频电磁场场强均远小于GB8702-2014《电磁环境控制限值》规定的公众曝露控制限值;站界处主变室侧工频电磁场场强一般大于主变室对侧;站界处主变室侧工频电磁场强度与主变总容量无明显关系。建议在今后110kV全户内变电站工程选址、设计过程中,尽量让主变室侧背对或者远离周边电磁环境敏感目标。

Through a comparative analysis on the test data of power frequency electromagnetic field at borders of six typical 110 kV indoor substations in Shanghai,it has shown that the field intensities were far less than the public exposure control limits specified in“Controlling limits for electromagnetic environment(GB 8702-2014)”,the field intensities by main transformer chamber side were generally greater than that by offside,and the intensity of power frequency electromagnetic field at station borders by main transformer chamber side was not evidently related to the gross capacity of main transformers.In the course of site selection and design process of 110 kV indoor substations in the future,it was recommended to lay the main transformer chamber side back toward or away from surrounding receptors sensitive to electromagnetic environment.