±500kV直流输电线路合成电场强度模式计算与实地监测数值的差异研究  

Study on the Difference Between Theoretical Calculation and Field Monitoring Value of Total Electric Field of ± 500kV DC Transmission Line

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作  者:陈环宇 谢百成 姜超 CHEN Huanyu;XIE Baicheng;JIANG Chao(Northeast Electric Power Design Institute Company Limited of China Power Engineering Consulting Group,Changchun 130021,China)

机构地区:[1]中国电力工程顾问集团东北电力设计院有限公司,长春130021

出  处:《吉林电力》2022年第3期46-49,共4页Jilin Electric Power

摘  要:针对直流输电线路在运行一段时间以后,线路下方合成电场强度的实地监测值与模式计算值经常存在一定差异的问题,通过对工程广泛应用的±500 kV直流输电线路进行模式计算和实地监测,对直流输电线路下方空间合成电场强度变化情况及规律进行分析和总结,对比模式计算结果和现场实地监测结果,分析并给出合成电场存在差异的可能原因。研究发现:合成电场强度的理论计算结果一般高于实地监测结果,可能引起差异的原因包括模型简化、气象因素、实际线高等,但二者的变化规律高度一致。After the DC transmission line has been running for a period of time,there is often a certain difference between the field monitoring value and theoretical calculation value of the synthetic electric field under the line.Based on the theoretical calculation and field monitoring of typical ± 500 kV DC transmission lines,this paper analyzes and summarizes the variation law of total electric field under DC transmission lines,compares and analyzes the theoretical calculation results and field monitoring results,and gives the reasons for the difference of total electric field.It is found that the theoretical calculation results of synthetic electric field are generally higher than the field monitoring results.The possible reasons for the differences include model simplification,meteorological factors and actual line height,but the change laws of the two are highly consistent.

关 键 词:直流输电线路 合成电场强度 理论计算值 实测值 差异 

分 类 号:TM71[电气工程—电力系统及自动化]

 

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