用户负荷对载波通信输出信号的影响试验及分析

摘要

低压电力线载波通信输出效率优劣是通信能否成功的重要环节,本文通过低压电力网用户运行不同负荷的试验数据,论述了用户负荷对电力线载波通信输出信号的实际影响.采用了控制低压电网载波输出阻抗稳定的试验方法,逐一更换用户不同负荷的运行状态,通过频谱分析装置扑捉载波通信的输出信号.经过比较分析,评估用户负荷对低压电力线载波通信输出信号的影响程度.该试验真实的还原了低压电力线载波通信的实际运行状况,充分反映了电力线载波通信的输出能力受用户使用负荷约束,对有效提高和改进电力线载波通信产品性能具有指导意义.%The output efficiency of low voltage power line carrier (PLC) is a very important part for successful communications.This paper discusses the actual impact on output signal of PLC based on test data of different electricity load running on the low voltage power grid.The test method is stabilizing the output impedance of low voltage PLC,then replacing the different electricity load and capturing the output signal of PLC through spectrum analysis device.The impact degree is evaluated on output signal of low voltage PLC by different electricity load.This test can realize the actual running condition of low voltage PLC,reflect output ability of PLC restricted by electricity load,which has the reference to effectively improve the performance of PLC products.