基于电晕预测的高海拔直流输电线路损耗检测

Loss detection of high altitude DC transmission line based on corona prediction

目前提出的高海拔直流输电线路损耗检测方法对电晕损耗的预测能力较弱。针对现有问题,引入电晕预测技术,提出了一种新的高海拔直流输电线路损耗检测方法。确定高海拔直流输电线路电压变化规律,分析不同结构参数下的输电线路海拔高度和线路间距,进而计算输电线路表面最大电场强度。确定电压参数后,针对高海拔地区特点,提出输电线路损耗检测公式。实验结果表明,随着电压的增加,高海拔直流输电线路的电晕损耗也呈指数性增加,基于电晕预测的高海拔直流输电线路损耗检测方法能够更好地分析电压特点,实现损耗检测。

At present,the proposed loss detection methods for high altitude HVDC transmission lines have weak ability to predict corona loss. Aiming at the existing problems,a new loss detection method for high altitude HVDC transmission lines is proposed by introducing corona prediction technology. The voltage variation law of high altitude DC transmission line is determined,the altitude and line spacing of transmission line under different structural parameters are analyzed,and then the maximum electric field intensity on the surface of transmission line is calculated. After the voltage parameters are determined,according to the characteristics of high altitude areas,the transmission line loss detection formula is proposed. The experimental results show that with the increase of voltage,the corona loss of high altitude DC transmission lines increases exponentially. The loss detection method based on corona prediction can better analyze the voltage characteristics and realize the loss detection.