摘要
设计专用数据采集装置,在低压电网现场数据采集,计算出不同频率信号下,工频周期内的电网阻抗,并形成三维阻抗频谱图。分析得出低压台区电网的频率在100 kHz以下,400 kHz以上的阻抗较稳定,阻抗值在0.5～15Ω之间。建议载波发送装置的输出阻抗的设计值为2～15Ω。
With the help of special designed data acquisition equipment, the frequency signal is collected at trans-former area within power frequency time slot. It then calculates the power grid impedance and stack 3D impedance spectrogram. The impedance value of power line is between 0.5 and 15 ohm. It is comparative stable at the frequency under 100 kHz anti over 400 kHz. The 2 to 15 ohm is recommended in the designing of impedance of carrier equip-ment.
出处
《华北电力技术》
CAS
2013年第1期27-30,共4页
North China Electric Power
关键词
低压电网
电网阻抗
载波
power line
grid impedance
carrier
