Speaking Event: Detecting Unintentional Islands in the “Wild West”


In this speaking event, Dr. Michael Ropp (President of Northern Plains Power Technologies) will discuss the impact of distributed energy resource interconnection standards on electric power system operations. A social and networking event will also take place, with food and beverages provided by Turks & Caicos Cabana Grille. Please indicate on the RSVP if you have any dietary restrictions. Vegetarian options will be provided.

  Date and Time




  • Turks & Caicos Cabana Grille
  • 5001 S Western Ave
  • Sioux Falls, South Dakota
  • United States 57108
  • Co-sponsored by Northern Plains Power Technologies
  • Starts 21 March 2019 12:02 PM
  • Ends 23 April 2019 11:40 PM
  • All times are America/Chicago
  • No Admission Charge
  • Register


Dr. Michael Ropp of Northern Plains Power Technology


Detecting Unintentional Islands in the “Wild West”

Applicable standards require that distributed energy resources (DERs) detect and prevent unintentional islands.  This topic has garnered significant attention over the years and many solutions exist, but as the number and density of DERs rises and as DERs are required to act more as grid-supporting resources, creating a “wild west” of distributed power systems, concern has re-emerged regarding whether unintentional islanding prevention will remain effective in all cases.  This talk will cover the following:

  1. Description of the “wild west”—what exactly is the problem?
  2. A brief overview of the eight essential groups of DER-resident islanding detection methods
  3. Recent research results on islanding detection with multiple inverters, mixed inverter types, and mixtures of inverters and rotating machines
  4. Future islanding detection means


Michael Ropp received the Bachelor's degree in Music from the University of Nebraska-Lincoln in 1991, and the Masters and Ph.D. in Electrical Engineering in 1996 and 1998, respectively, from the Georgia Institute of Technology, Atlanta, GA. He is presently the President and Principal Engineer of Northern Plains Power Technologies, Brookings, SD.  Dr. Ropp has over twenty years of experience in power engineering, power electronics, and photovoltaics.  He has authored over seventy technical publications and holds four patents.  He is a Senior Member of the IEEE and is active in standards creation, and is a registered Professional Engineer in South Dakota and Hawaii.  His primary technical interests are in the planning, design, modeling and simulation, control, dynamics, protection, reliability, diagnosis and event analysis of low-inertia, distributed and inverter-dominated power systems.  Dr. Ropp also has a long-standing fascination with electrified transportation, and he occasionally still gets to make some music.


6:30-7:00pm: Social

7:00-8:00pm: Talk

8:00-9:00pm: Questions, Discussion, and Networking