多回路电缆护套交叉互联方式下的环流计算方法  

Study on the Method of Circulation Calculation for the Cross Connection of Multi-Loop Cable Sheath

作　　者：鲁晓一 徐伟 

机构地区：[1]广东电网有限责任公司珠海供电局,广东珠海519000

出　　处：《电网与清洁能源》2017年第6期71-76,共6页Power System and Clean Energy

基　　金：广东省创新团队计划(2016KCXTD022)~~

摘　　要：建立了多回交叉互联方式下电缆线路护套环流的计算模型,推导护套环流分布计算方法,并以某电力公司110 kV两回线路为例,建模计算了其在交叉互联方式下电缆线路3种不同相序排列时,两回路电缆的护套环流大小。计算结果表明,由于多回路电缆线路之间存在更强的电磁耦合关系,使得电缆电流分布的不均匀程度更为突出。In this paper, the method of cable sheath circu- lation calculation model with cross connection style is estab- lished, and the sheath circulation distribution calculation method is deduced. Taking a 110kV dual-loop circuit as an example, models are established to calculate the dual-loop ca- ble sheath circulation with three kinds of different phase se- quences. The results show that because of the strong electro- magnetic coupling between the muhi-loop cable lines, the un- even distribution of the cable current is more prominent.

关 键 词：多回路电缆 交叉互联 电缆环流 

分 类 号：TM751[电气工程—电力系统及自动化]