Adaptive Subband Compression of Streaming Data for Power System Monitoring and Control

A data compression system capable of providing high-fidelity high-resolution streaming of power system real-time measurements is proposed. Referred to as adaptive subband compression, the proposed technique partitions the signal space into subbands and adaptively compresses subband signals based on each subband's active bandwidth. The proposed technique conforms to existing industry phasor measurement standards. It applies to the streaming of phasor measurements or high-frequency point-on-wave samples of power system signals. Experiments on synthetic and real data show that the proposed technique reduces the required communication data rate by several orders of magnitude while maintaining the precision required by the industry standards.

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