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作 者:王献军 华隽 张世林 侯慧娟 王国卉 WANG Xianjun;HUA Jun;ZHANG Shilin;HOU Huijuan;WANG Guohui(Marketing Service Center,State Grid Henan Electric Power Company,Zhengzhou 450051,China;State Grid Henan Electric Power Company,Zhengzhou 450050,China)
机构地区:[1]国网河南省电力公司营销服务中心,河南郑州450051 [2]国网河南省电力公司,河南郑州450050
出 处:《自动化仪表》2023年第8期62-67,共6页Process Automation Instrumentation
摘 要:为了解决智能电网数据采集系统中经常出现的调度失衡、采集装置负荷波动等问题,设计了一种智能电网数据采集系统。该系统基于矢量正交频分复用(VOFDM)的高速电力线载波(HPLC)通信技术,在接收端配备了两个非线性预处理器,具有较好的峰均功率比特性。该系统能够提高非线性预处理器的效率,以解决传输易受到电磁干扰的问题。此外,该系统还应用了自行设计的新型智能电网采集装置,可对电网负荷波动数据进行交、直流检测。试验结果表明,在相同的条件下,峰均功率比阈值最高降低了4.6 dB,通信性能增益显著,大大提高了智能电网数据采集能力。A smart grid data acquisition system is designed to solve the problems of scheduling imbalance and load fluctuation of the acquisition device that often occur in smart grid data acquisition systems.The system is based on vector orthogonal frequency division multiplexing(VOFDM)high power line carrier(HPLC)communication technique and is equipped with two nonlinear preprocessors at the receiving end with better peak to average power ratio characteristics.This system can improve the efficiency of the nonlinear preprocessors to solve the problem of transmission susceptibility to electromagnetic interference.In addition,the system also applies a new self-designed smart grid acquisition device,which can detect both alternating current and direct current for grid load fluctuation data.The test results show that the peak to average power ratio threshold is reduced by most to 4.6 dB under the same conditions,and the communication performance gain is significant,which greatly improves the smart grid data acquisition capability.
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