Real-time compression of IEC 61869-9 sampled value data

Steven M. Blair, Andrew J. Roscoe, James Irvine

Research output: Contribution to conferencePaperpeer-review

13 Citations (Scopus)
601 Downloads (Pure)


Fast-acting, yet cost-effective, communications is critical for smarter grid monitoring, protection, and control. This paper demonstrates a new approach for the real-time compression of Sampled Value (SV) data based on the IEC 61869-9 recommendations. This approach applies simple compression rules, yet yields excellent compression performance---typically compressing data to less than half of the original size. This leads to a significant and beneficial reduction in encoding time (in the merging unit producing the SV data) and decoding time (at the end application), as well as the main benefit of reduced Ethernet transmission times resulting from the reduced frame size. As well as reducing the absolute bandwidth requirements in typical applications, this has system-wide benefits due to reducing Ethernet queuing delays and the consequent network jitter. The approach has been validated on a real-time platform to accurately measure all contributions to the end-to-end delay. This work will help enable low-latency and bandwidth-sensitive applications involving the SV protocol, such as phasor measurement units and wide-area protection.
Original languageEnglish
Number of pages6
Publication statusE-pub ahead of print - 24 Oct 2016
Event IEEE Applied Measurements for Power Systems (AMPS 2016) - E.On Energy Research Center, RWTH Aachen University, Aachen, Germany
Duration: 28 Sept 201630 Sept 2016


Conference IEEE Applied Measurements for Power Systems (AMPS 2016)
Internet address


  • communications
  • IEC 61850-9-2
  • IEC 61869-9
  • merging units
  • phasor measurement units
  • power system protection
  • time synchronization


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