A Simulation Platform for Power System Restoration

Student thesis: Master thesis (including HD thesis)

  • Richard Mushimiye
4. term, Energy Engineering, Master (Master Programme)
Power system restoration is the process of restoring a part of or a total electric power grid into normal operation after a wide-area outage. This paper dealts with the concept restoration process. It develops a flexible simulation platform as a decision-support tool for power system restoration. This platform adopts a path searching algorithm based on electric distances to find the direct path from the black-start unit or current energized buses to the bus with shortest electric distance, and then closes the switches to boost its voltage within the operating limit. During the restoration, the grid regulations regarding frequency and voltage at each substation will be iterative checked by time-domain simulations, i.e. either in the root mean square (RMS). A flexible close-loop decision-support tool will be implemented to recalculate the path of energization when necessary, e.g. unavailability of components or violation of grid regulations. The effect of automatic on load tap changer (OLTC) of transformers will also be examined during the restoration process. This flexible simulation platform is developed using DIg-SILENT Programming Language (DPL) in PowerFactory with any selected black-start unit. This platform can adapt to different power systems and various grid operating conditions. The IEEE 39-bus New England power system is selected as the test system to validate this plat-form with different black-start paths.
SpecialisationElectric Power Systems and High Voltage Engineering
Publication date1 May 2019
Number of pages63
ID: 302646092