换流站直流配电装置区电磁环境分析

Analysis of Electromagnetic Environment of DC Distribution Equipment in a Converter Station

检测分析某±660 kV换流站直流配电装置区的电磁环境强度。利用意大利里氏公司(LSI-Lastem)高压直流环境监测系统检测直流配电装置区域作业场所的地面合成场强、离子流密度和磁场,通过构建平面坐标体系详细显示合成场强的空间分布,并将检测结果与相关标准比较。共检测196个作业点,以最大值统计的合成场强中15个检测点检测结果的绝对值大于25 kV/m,所有检测点的离子流密度均小于100 nA/m2,直流磁场均小于1 mT。直流配电装置区域部分作业点的合成场强强度超过25 kV/m,可以通过调整作业人员的巡视路线和接触时间来减轻工频电场对作业人员的危害。

Inspection and analysis the electromagnetic environment of DC distribution equipment in a±660 kV converter station is carried out.The operation area total electric field strength,ion-flux and magnetic fields are measured by LSI-Lastem environment monitoring system.The detailed total electric field strength intensity space distribution is obtained via constructing the plane coordinate system of the substation.Test results are compared with the relevant standards.Electromagnetic environment of 196 work sites are measured.There are 15 worksites whose total electric field strength are more than 25 kV/m.Ion-flux and magnetic fields of all sites are less than 100 nA/m2 and 1mT.For those worksites whose total electric field strength are more than 25 kV/m,adjustment to the patrol route and contact time should be made to reduce hazards.