摘要
高频通道的可靠性对高频保护的正确动作起决定作用。针对常州电网110 kV新赛线高频通道衰耗过大的问题进行分析,测试了高频通道上的电器设备工作性能,并分析了地返波干扰因素。通过对新赛线高频通道进行扫频试验,选择适合该高频通道的工作频率,有效地减小了该高频通道的衰耗。
The reliability of high-frequency channel plays a decisive role in correct operation of carrier current protection. Aiming at oversize attenuation problem of 110 kV Xinsai line high-frequency channel,the work capability of wiring in high-frequency channel is checked, and interference factors of ground backward-wave are analyzed. Fitting operating frequency of Xinsai line high-frequency channel is decided through sweep checking of the channel. As a result,the attenuation of high-frequency channel is decreased effectively.
出处
《江苏电机工程》
2008年第4期32-34,共3页
Jiangsu Electrical Engineering
关键词
高频通道
衰耗
工作频率
扫频试验
high-frequency channel
attenuation
operating frequency
sweep check