山东电力技术2025，Vol.52Issue(7)：35-43,9.DOI:10.20097/j.cnki.issn1007-9904.2025.07.004
雷击条件下柔性直流输电同杆并架线路相互影响仿真分析
Simulation Analysis of the Interaction of Flexible HVDC Transmission Lines Erected on Same Tower Under Lightning Conditions
摘要
Abstract
In this paper,the interaction between the lines on the same tower and the propagation characteristics of lightning traveling waves when they encounter the lines on the same tower are analyzed,and the lightning strike on the positive pole of Fuyan line of Zhangbei Flexible HVDC Transmission Project is simulated.By comparing the simulation with the actual waveform,the characteristics of the positive electrode voltage and current waveform on each side of Fuyan line and Zhongyan line and the characteristics of lightning wave propagation are analyzed.The results showed that when the lightning current hit the Fuyan line,the lightning wave propagates to both sides of the Fuyan line,and induced lightning wave is generated on the Zhongyan line due to electromagnetic coupling,which propagates to both sides of the Fuyan line.Moreover,the travelling waves of different modulus incident on both sides of the line demarcation point will cross refract at the demarcation point,which causes the difference of induced lightning waves in two sides of the Zhongyan line.After that,both the lightning wave and the induced lightning wave are refracted and reflected at the converter station.The combined action of the above factors will cause the disturbance of the line voltage and current in the normal operation on the same tower,and can cause traveling wave protection action.This research have reference significance for the prevention measures when facing lightning strike on DC lines on the same tower and the setting of the relay protection logic of the DC line traveling wave relay protection device.关键词
雷击/柔性直流输电/同杆并架线路/行波Key words
lightning strike/flexible high voltage direct current/transmission lines erected on same tower/traveling wave分类
信息技术与安全科学引用本文复制引用
陈瑞,郑少明,刘博,董鹏,黄天啸..雷击条件下柔性直流输电同杆并架线路相互影响仿真分析[J].山东电力技术,2025,52(7):35-43,9.基金项目
国家电网有限公司华北分部科技项目"非故障雷击对线路保护动作行为影响机理及保护原理改进方法研究"(1100/2021-02002B). Science and Technology Project of North China Branch of State Grid Corporation of China"Study on the Influence Mechanism of Non-fault Lightning Strike on Line Protection Action Behavior and the Improvement Method of Protection Principle"(1100/2021-02002B). （1100/2021-02002B）
