中国电机工程学报2016，Vol.36Issue(6)：1748-1756,1789,10.DOI:10.13334/j.0258-8013.pcsee.2016.06.032
计及金属护层结构的电缆单端故障测距方法
Single-terminal Fault Locating Method of Cables Considering the Metal Sheath Structure
摘要
Abstract
Most faults of single core cables are related to metal sheath and the model that only considers the electrical structure parameters of the core fails to realize the sheath-related fault location. Based on the double PI model, this paper presented a fault location method considering the metal sheath. The current along the line can be obtained using the electrical quantities in the head of the conductor and sheath. Then the fault distance can be calculated through iteration according to the feature that fault current components before and after the fault point corresponding to the non-fault phase remain unchanged after the fault. The proposed method locates the fault point with only the phase value of the head end fault companent, which can locate the sheath-ground fault, core-sheath fault and core-sheath-ground fault accurately. A number of simulations indicate the method can get accurate results, without the influence of fault distance, fault type, fault resistance, fault initial angle and sheath grounding method.关键词
单芯电缆/金属护层/双π模型/单端法/故障测距Key words
single core cable/metal sheath/double PI model/single-end method/fault location分类
动力与电气工程引用本文复制引用
唐进,张姝,林圣,何正友..计及金属护层结构的电缆单端故障测距方法[J].中国电机工程学报,2016,36(6):1748-1756,1789,10.基金项目
国家自然科学基金项目(51307145)；四川省应用基础计划项目(2014JY0177)；中央高校基本科研业务费专项资金资助(2682014CX025)。 Project Supported by National Natural Science Foundation of China (51207130) （51307145）
the Application Basic Research Project of Sichuan Province (2014JY0177) （2014JY0177）
Fundamental Research Funds for the Central Universities (2682014CX025) （2682014CX025）
