Micro-Synchrophasors in Distribution Systems
July 9, 2013 Project Review/Update Meeting
The research team reviewed the results from three initial months of the project. Von Meier began with an overview of progress, with contributions by Culler, McParland, and Stewart. McEachern and Grady presented simulation results that showed the required phase angle resolution for various distribution applications, concluding that 20 millidegrees should be sufficient for most applications. McEachern presented the initial lab test results of prototype μPMU performance, showing that the difference between two μPMU's connected to the same signal averages less than 5 millidegrees, with a standard deviation of about 3 millidegrees.
Von Meier presented a list of up to 40 distribution applications where microsynchrophasors might be useful, and described the planned methods for honing this list to a practical number of applications. A tutorial and brainstorming session with U.S. utilities and National Labs is planned. Hofmann presented an update on utility outreach, and T2M progress. Schauder, Gould, and Heidel offered excellent constructive, specific suggestions throughout the discussion. The group reviewed the plans for progress before the next quarterly meeting, and Heidel offered his congratulations for the on-time project performance so far.
April 8, 2013 Project Kickoff Meeting
The research team reviewed project objectives and next steps for the first quarter of this three-year project with the visiting program director team from the Department of Energy. Alex presented an early prototype μPMU device along with first measurements of time synchronization between the unit and the GPS pulse-per-second signal, which bounds the possible accuracy of the voltage phase angle calculation.
To round out the day, David led the team and visitors on a tour of the prospective μPMU networking lab in Soda Hall -- finishing with a look at the basement of Cory Hall, that illustrates the ability of our research community to bring advanced instrumentation and data management to legacy energy infrastructures.