基于代理模型的电力电缆温度场快速计算方法及其应用
Surrogate Model-based Fast Calculation of Power Cable Temperature Field:Method and Application
黄莉 1梁云 1黄辉 1孙晓艳 1王珊 1杨玉强2
作者信息
- 1. 国网智能电网研究院有限公司,北京 102209;电力智能传感技术国家电网公司实验室,北京 102209
- 2. 国网浙江省电力有限公司,浙江杭州 310007
- 折叠
摘要
电缆内部温度是电缆管理的重要参数,针对高精度数值计算和实验测量均不能快速准确预测电缆内部温度的问题,提出一种基于多物理场仿真数据构建代理模型,并基于代理模型实现电缆内部温度场快速计算的方法.以110 kV单芯高压电缆为例,首先对比拉丁超立方设计和最大最小思想优化的拉丁超立方方法构造样本空间的效果,选取最优采样方案,再通过径向基神经网络构建代理模型,以环境温度和载流量为变量构建温度数据集进行测试,进一步通过粒子群算法对代理模型进行优化,最后利用网格节点数据使温度场分布可视化.对比110 kV单芯高压电缆内部温度场计算结果,表明所提的基于代理模型的电力电缆温度场快速计算方法具有较高的精度和效率.
Abstract
Accurately predicting the temperature inside cables is crucial for effective cable management.However,this process can be time-consuming through numerical calculations and experimental measurements.To address this issue,a new method for constructing surrogate model based on multi-physics field simulation data is proposed to calculate the cable's internal temperature field quickly and accurately.A single-core 110 kV high-voltage cable is taken as a study subject.Firstly,the Latin hypercube design and the Latin hypercube method optimized by the maximum-minimum idea are compared in constructing the sample space.The optimal sampling scheme is selected to construct the surrogate mode through RBF neural network,and a temperature data set is created for testing using ambient temperature and load capacity.Additionally,the surrogate model is optimized by the particle swarm algorithm,and the temperature field distribution is visualized with the grid node data.The calculation result of the internal temperature of the 110 kV single-core high-voltage cable shows that the proposed surrogate model-based fast calculation method for power cable temperature field has high accuracy and efficiency.
关键词
代理模型/电力电缆/有限元仿真/快速计算Key words
surrogate model/power cable/finite element simulation/fast calculation引用本文复制引用
基金项目
国家电网有限公司科技项目(5500-202258316A-2-0-QZ)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据