110 kV电缆单端接地系统回流线加装的仿真研究  

Study on Installation of Return Line in 110 kV Cable Single Ended Grounding System

作　　者：李崔延 侯赞 LI Cuiyan;HOU Zan(China EPPEI Smart Energy Co.,Ltd.,Beijing 100120,China;Beijing Electric Power Economic Technology Research Institute Co.,Ltd.,Beijing 100055,China)

机构地区：[1]中能智新科技产业发展有限公司,北京100120 [2]北京电力经济技术研究院有限公司,北京100055

出　　处：《电力勘测设计》2023年第5期24-27,共4页Electric Power Survey & Design

摘　　要：为指导高压电缆工程设计中回流线的加装,利用ATPDraw仿真软件,按照不同的短路电流水平和电缆长度范围,对单端接地系统方式的电缆线路进行建模。分别建立站联电缆、纯电缆外电源线路及架空电缆混合线路的仿真模型,重点分析单相接地故障时回流线对金属护层感应过电压的影响,以电缆线路类型、长度为指标给出是否敷设回流线的指导意见。To guide the installation of return line in the engineering design of high voltage cable,the cable routes with different short-circuit current level and cable length range are modeled by ATPDraw simulation software.The simulation models of connecting cables in substation,power transmission lines composed of cables and hybrid lines composed of overhead lines and cables are established respectively,and the influence of the return line on the induced over-voltage of the metal sheath in case of single-phase grounding fault is analyzed.Based on the type and length of the cable line,the guidance on whether to lay the return line is given.

关 键 词：高压电缆 回流线 ATPDRAW 单相接地 感应电压 

分 类 号：TM645[电气工程—电力系统及自动化]