IEEE PES Task Force on Oscillation Source Location

Sponsored by IEEE PES PSDP Committee and PSSC Subcommittee


Oscillation monitor has discovered many "new" oscillatory behaviors in power grids that could not be reproduced through traditional model based analyses. Initial investigations suggest that some oscillations are introduced by specific generators, either under special conditions or with failed components. Operators have a strong need to identify the sources in order to re-dispatch to damp the oscillations. The Oscillation Source Location is likely to be the first "Killer App" that will truly enable the operational use of the synchrophasor technology.


Both academia and industry have already had some initial experiences with this problem. The goal of this task force (TF) is to consolidate the previous achievements, reach consensus, and push the technology forward towards solving the problem. The TF's scope includes:

  • Test Cases Library: The TF will add more simulated cases to the existing library ( and also cases with real PMU data.
  • Summarizing Approaches: The TF will summarize, evaluate, and compare the different approaches used for oscillation source analysis, which may include eigenvalue analysis, PMU data playback at generator's terminal bus, periodic signal injection and measurement based method, etc.
  • Theoretical Investigations: The TF will review the currently available oscillation source theories and reach consensus, as well as define Forced Oscillation, Natural Oscillation, Oscillation Source and related concepts and terminologies.
  • Online Algorithm Development: The TF will evaluate and test several most promising online oscillation source location algorithms using the developed test cases library. The TF will work with academia and utility companies to develop prototypes and arrange field tests. Software vendors will then be involved to develop production grade products.
  • Tasks

    No. Task Time Frame Deliverables
    Test Cases Library - For Developing and Benchmarking Theories and Algorithms
    1 Pool observed and possible oscillation scenarios. Ongoing List of all possible oscillation scenarios
    2 Produce more simulated test cases. Ongoing Test cases library (publicly available)
    3 Collect oscillation events with real PMU data. Ongoing Test cases library (publicly available)
    4 Report and IEEE Transaction paper on Test Cases Library. By Aug. 2019 Milestone
    Summary on Various Approaches Used for Oscillation Source Location
    5 Summarize available approaches for oscillation source location including: eigenvalue analysis, PMU data playback at generator's terminal bus, periodic signal injection and measurement based method, etc. Ongoing Summary of available study approaches
    6 Evaluate and compare different approaches. Ongoing Comparison results - pros and cons
    7 Report and IEEE Transaction paper on Oscillation Source Analytical Approaches. By Aug. 2019 Milestone
    Theoretical Investigations - A Foundation
    8 Review and develop the oscillation theories to find the properties of the oscillation sources. Ongoing List of oscillation source properties
    9 Comb through the theories and define the related concepts and terminologies. Ongoing List of the definitions and explanations
    10 Report and IEEE Transaction paper on Oscillation Source Theory. By Aug. 2019 Milestone
    Online Oscillation Source Location Algorithm Development
    11 Pool all available online oscillation detection and source location algorithms. Ongoing List of available algorithms
    12 Identify the requirements for the oscillation detection algorithms from source location's perspective. Evaluate and rank the source location algorithms according to their maturity. Ongoing Evaluation of the algorithms
    13 Test the first five most promising algorithms using the test cases library. Ongoing Test results and improvement suggestions
    14 Report and IEEE Transaction paper on Testing of Online Oscillation Source Detection Algorithms. By Aug. 2019 Milestone
    15 Improve the algorithms according to the test results. Ongoing Updated algorithms
    16 Develop prototypes and test them in hosting entities. Develop operating procedures. Ongoing Field test results
    17 Vendors implement the algorithms of the users' choice into the production grade software. Future Product delivery
    18 Report and IEEE Transaction Paper on Real-life Implementation of Oscillation Source Location and Mitigation. By Aug. 2019 Milestone
    19 An IEEE PES Final Report on Oscillation Source concludes the task force. By Aug. 2020 Milestone


  • Quarterly online meetings.
  • Face-to-face TF meetings at meetings like IEEE PES General Meeting, NASPI, CIGRE, NERC SMS, etc.