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分析了配电网工频电力通信的国内外现状,介绍了信息跨变压器台区信号定义与实现方法。信号提取时采用电网背景自适应陷波消除50Hz基波及其谐波的影响,采样发送信号用于通信的匹配滤波与功率谱估计,充分利用匹配滤波器输出信息对传输数据进行软判决纠错译码。
The status quo of power frequency power communication in distribution network at home and abroad is analyzed, and the definition and implementation of signal cross-transformer station signals are introduced. When the signal is extracted, the influence of 50Hz fundamental wave and its harmonics is eliminated by adaptive grid notch. The sampled transmit signal is used for the matched filter and power spectrum estimation of communication. The output of matched filter is used to make soft decision error correction of transmitted data code.