新型输电电缆动态增容系统设计与应用  

Design and Application of New Type Dynamic Capacity Enlargement System for Transmission Cable

作　　者：严有祥 朱婷[2] 王蕾[2] 张伟刚 陈朝晖 YAN Youxiang;ZHU Ting;WANG Lei;ZHANG Weigang;CHEN Chaohui(State Grid Xiamen Electric Power Supply Company,Xiamen 361006,China;Fujian Province Key Laboratory of High Voltage Technology,Xiamen University of Technology,Xiamen 361024,China)

机构地区：[1]国网厦门供电公司,厦门361006 [2]厦门理工学院福建省高电压技术重点实验室,厦门361024

出　　处：《电力系统及其自动化学报》2018年第8期133-139,共7页Proceedings of the CSU-EPSA

摘　　要：针对输电在线监测系统中电缆温度监测的单一性问题,本文提出了一种基于集中运算的动态增容算法模型。通过将光纤测温与护层电流监测相结合,对实时导体温度与载流量,短时载流量和周期性载流量进行计算。该计算模型能实时分析电缆表面温度的分布数据,发现潜在异常点,实现故障早期预警,而且可动态计算电缆导体温度及允许电流,给输电部门提供电缆短时载流量负荷分析以及周期性载流量的特征分析结果。在确保电缆运行安全的前提下,可实现充分利用电缆输送能力的目标。Considering the simplicity problem in the temperature monitoring of transmission cable by an online monitoring system,a dynamic capacity enlargement algorithm model based on centralized computing is put forward in this paper.Conductor’s real-time temperature and ampacity,and short-termand periodic ampacities are computed through combining the optical fiber temperature measurement with sheath current monitoring.The proposed model can analyze the distributed data of cable surface temperature in real time,detect potential abnormal points,and realize early warnings of faults as well as dynamically computethe conductor temperature and allowable current.In this way,the short-term cable ampacity analysis and feature analysis of periodic ampacity can be supplied to transmission sectors.On the premise of ensuring a safe operation,the goal of making the most use of transmission cable can be achieved.

关 键 词：电缆 集中运算 温度检测 动态增容 载流量 

分 类 号：TM744[电气工程—电力系统及自动化]