新型高压真空间隙避雷器研究

Research of New High-voltage Vacuum Gap Arrester

电气化铁路牵引供电系统目前广泛采用的氧化锌避雷器性能不稳定、防雷效果较差,并且常常发生爆炸事故,对于氧化锌避雷器存在问题的原因进行了全面分析,提出了研制新型高压真空间隙避雷器的解决方案,使之具备冲击残压低,耐受大电流冲击能力强、工频泄漏电流低,环境影响小,性能稳定,寿命长,免维护的优点,提高牵引供电系统过电压的防护能力。

The zinc oxide arrester widely used in electrified railway traction power supply system has the disadvantages of instable performance,poor lightning protection effect and regular explosion.This paper analyzes the existing problems of zinc oxide arrester,and proposes the development of new high-voltage vacuum gap arrester to improve the over-voltage protection performance of railway traction power supply system,which has the advantages of low impact residual voltage,high impact current,low-frequency leakage current,little enviromental influence,stable performance,long life,free maintenance and so on.