基于反演的电力电缆缆芯温度间接测量研究  

Research on Indirect Measurement Method of Cable Conductor Temperature Through Temperature Retrieval

作　　者：周蠡 彭迎 李靖 陈然 张毅军 但林烽 黄雄峰[4] Zhou Li1, Peng Ying,Li Jing1 ,Chen Ran,Zhang Yijun3,Dan Linfeng3, Huang Xiongfeng4(1. State Grid Hubei Electric Economics and Technology Research Institute, Wuhan 430077,China; 2. State Grid Hubei Electric Power Company, Wuhan 430077 ,China~ 3. Wuhan Electric Power Supply Design Institu- te,Wuhan 430030, China; 4. College of Electrical Engineering ＆ Renewable Energy, China Three Gorges Univ., Yichang, 443002, Chin)

机构地区：[1]国网湖北省电力公司经济技术研究院,武汉430077 [2]国网湖北省电力公司,武汉430077 [3]武汉供电设计院有限公司,武汉430030 [4]三峡大学电气与新能源学院,宜昌443002

出　　处：《三峡大学学报（自然科学版）》2018年第2期66-71,共6页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金(51577106)

摘　　要：针对电力电缆导体温度的测量,提出了一种基于有限元法的电缆导体温度间接测量方法.利用有限元法对电缆温度场进行分析计算,获取不同载荷、边界条件下的表面温度和导体温度的对应关系,再结合测量到的表面温度即可间接得到导体温度.另外,针对电缆中某些材料热参数难以标定从而影响温度场计算模型准确性的问题,本文通过对电缆内部材料的热参数值进行辨识以对模型进行校正.To realize monitoring for the conductor temperature of power cables, an indirect measurement method based on finite element method is introduced. By calculating the cable temperature field based on finite elements, the corresponding relationship between surface temperature and conductor temperature under dif- ferent load and boundary conditions is got. Besides, aiming at the problem that the thermal parameters of some materials are difficult to be calibrated so as to influence the accuracy of the temperature field calculation model, the unknown thermal parameters are identified in this paper.

关 键 词：电力电缆 导体温度 有限元 温度场计算 参数辨识 

分 类 号：TM726[电气工程—电力系统及自动化]