架空导线动态增容的环境测量解耦模型及其实验验证  

An environmental measurement decoupling model for dynamic capacity increasing of overhead conductors and experimental validation

作　　者：陈春宏 许智贤 曾衍淇 彭瑞东 彭向阳 王锐 CHEN Chunhong;XU Zhixian;ZENG Yanqi;PENG Ruidong;PENG Xiangyang;WANG Rui(Yangjiang Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Yangjiang 529500,China;School of Electric Power Engineering,South China University of Technology,Guangzhou 510640,China;Electric Power Research Institute,Guangdong Power Grid Co.,Ltd.,Guangzhou 510080,China)

机构地区：[1]广东电网有限责任公司阳江供电局,广东阳江529500 [2]华南理工大学电力学院,广东广州510640 [3]广东电网有限责任有限公司电力科学研究院,广东广州510080

出　　处：《电力科学与技术学报》2023年第6期206-214,共9页Journal of Electric Power Science And Technology

基　　金：中国南方电网有限责任公司科技项目(GDKJXM20210873;GDKJXM20185588)。

摘　　要：动态增容技术通过实时评估架空导线的载流量来挖掘导线的潜在电能输送能力,但现有的动态增容模型存在所需传感器数目较多或传感器安装维护困难等问题,为此,提出环境测量解耦的动态增容模型。首先,该模型建立铝球的暂态降温数据与环境变量的关联方程组;然后,从灵敏度的角度分析各环境变量的求解精度,并给出不同灵敏度的环境变量的求解方法,实现导线载流量的评估;最后,通过实验对环境测量解耦模型进行验证。实验结果表明,与IEEE Std 738‑2012标准的计算结果相比,模型的计算结果误差不超过4%。The dynamic capacity increasing technique exploits the potential power transmission capacity of overhead conductors by assessing ampacity in real-time.However,the existing dynamic capacity increasing models face challenges such as the requirement for a large number of sensors or difficulties in the installation and maintenance of sensors.To address these issues,a dynamic environmental measurement decoupling model is proposed.Firstly,the model establishes the associated equations between transient temperature data of aluminum spheres and environmental variables.Subsequently the solution accuracy of each environmental variable from the perspective of sensitivity is analyzed,and the solution methods of environmental variables with different sensitivities are given.Finally,experiments are carried out to validate the accuracy of the environmental measurement decoupling model.The experimental results show that the calculation error of the model is less than 4%compared with the calculation results of IEEE Std 738-2012.

关 键 词：架空导线 动态增容 等效散热装置 环境测量解耦模型 载流量评估 

分 类 号：TM726.3[电气工程—电力系统及自动化]