超高压交流输电线路对埋地金属管道的感性耦合计算模型研究  

The model of inductive coupling calculation between ultra-high voltage AC transmission lines and buried metal pipelines

作　　者：秦澔澔 万星辰[1] 翟羽翔 冯满[1] 邓慰[1] 王城闻笛 QIN Haohao;WAN Xingchen;ZHAI Yuxiang;FENG Man;DENG Wei;WANG Chengwendi(Wuhan NARI Limited Liability Company,State Grid Electric Power Research Institute,Wuhan 430074,China;State Grid Hubei Electric Power Co.,Ltd.,Xiangyang Power Supply Company,Xiangyang 441000,China)

机构地区：[1]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074 [2]国网湖北省电力公司襄阳供电公司,湖北襄阳441000

出　　处：《湖北大学学报（自然科学版）》2023年第4期634-642,共9页Journal of Hubei University：Natural Science

基　　金：国网公司科技项目(SGXJDK00LCJS2100035)资助。

摘　　要：超高压交流输电线路在运行时会对埋地金属管道产生感性耦合影响.本文中基于传输线理论,首先推导出金属管道和输电线路理想平行时的感性耦合计算模型,进一步推导出输电线路和金属管道斜接近、交叉时的互感系数求解公式,据此通过等效思想将以往对地干扰电压计算的复杂微分方程简化为多元一次微分方程组,大幅度减少计算量,进而运用该简化模型研究典型影响参数对感性耦合的影响规律,并与现有软件仿真模拟结果做对比.结果表明:该简化计算模型可与Matlab、Mathmatic等数学模拟软件相结合,方便快速地获得干扰段的感性耦合电压值,可用于设计单位便捷计算管道各点的对地电压及纵向电流,快速评估管道受故障电流感性耦合影响,该方法具有有效性和可行性.The operation of ultra-high voltage AC transmission lines have an inductive coupling effect on buried metal pipelines.Based on transmission line theory,firstly,an inductive coupling model was derived for the ideal parallel of metal pipeline and transmission line,and further deduced the transmission lines and metal pipes of mutual inductance coefficient of oblique approaching and cross formulas.Based on this,the complex differential equation for calculating the ground disturbance voltage was simplified to a set of multiple primary differential equations by the equivalent method,which greatly reduced the computation.And then we used the simplified model of typical influence parameters on the influence law of inductive coupling,and compared with the existing software simulation results.The results show that the simplified calculation model can be combined with mathematical simulation software such as Matlab,Mathmatic,quickly and conveniently to obtain the interference period of inductive coupling voltage value,can be used for rapid assessment unit pipeline design affected by fault current inductive coupling,and it is convenient to calculate pipeline to ground voltage and the longitudinal current at every point,has the validity and feasibility.

关 键 词：感性耦合 简化计算模型 超高压输电线路 埋地金属管道 

分 类 号：TM723[电气工程—电力系统及自动化]