电测与仪表2018，Vol.55Issue(2)：15-19,5.
基于冲击电压下电缆等效电阻值的绝缘状态评估新方法
A new method of insulation condition assessment based on equivalent resistance value of cable under impulse voltage
李巍巍 1甘德刚 1朱轲 1刘凤莲 1何珉 2周凯2
作者信息
- 1. 国网四川电力科学研究院,成都610072
- 2. 四川大学电气信息学院,成都610065
- 折叠
摘要
Abstract
In order to evaluate the insulation condition of power cable,a new method to calculate equivalent resistance value and evaluate insulation condition of cable was presented under the impulse voltage.To simulate the circuit parameters of the components and the whole layer of power cable independently,the RC series and parallel equivalent circuit of power cable was built.The mathematical expression of the equivalent circuit parameters of the power cable was given by using the electromagnetic field theory,and the method to calculate the equivalent resistance of power cable was proposed,and the calculation expression of the equivalent resistance of power cable under impulse voltage was derived,and a new method for evaluating the insulation condition of power cable was summarized.The equivalent resistance of cable was simulated and calculated by ATP (alternative transients program) and MATLAB (matrix laboratory) software.The simulation and calculation results show that the maximum error between the setting value of resistance and the calculating value of the equivalent resistance is 0.4％,and the reliability of the new method is verified.关键词
冲击电压/绝缘状态评估/ATP/MATLAB/等效电阻值Key words
impulse voltage/assessment of insulation condition/ATP/MATLAB/equivalent resistance value分类
信息技术与安全科学引用本文复制引用
李巍巍,甘德刚,朱轲,刘凤莲,何珉,周凯..基于冲击电压下电缆等效电阻值的绝缘状态评估新方法[J].电测与仪表,2018,55(2):15-19,5.
