Principal Investigator: Dr. Rob Cuzner and Dr. Yongjune Shin
A Control Hardware-in-the-Loop (CHiL) real-time (RT) simulation multi-platform environment will developed and utilized to realize a unified modeling framework for the purpose of deriving parameterized and data-informed models that account for IBR number, location and type on power distribution networks having a high level of IBR penetration. This CHiL platform is capable of rapidly rapid voltage change events that are accompanied by bursts of supraharmonic content produced by IBRs. The modeling framework will also be used to further understand the sources of 2-150kHz supraharmonic noise by utilizing the CHiL platform to emulate the Common Mode (CM) and Differential Mode (DM) conducted emissions at points of IBR connection to high voltage transmission feeds and medium voltage and low voltage power distribution systems, including microgrids having very high local concentrations of IBRs. Changes in supraharmonic content across HV/MV and MV/LV transformers, caused by resonant interactions, will also be studied with the unified modeling framework. The mathematical approach incorporates Differential Mode (DM) and Common Mode (CM) Synthetic Noise Sources feeding DM Equivalent Model (DEM) and CM Equivalent Model (CEM) representations of the IBRs, as opposed to the use of full switching models (which are computationally prohibitive). The results of the unified modeling framework will be baselined against large scale Electromagnetic Transient (EMT) simulations in a commercial platform. The work also includes the incorporation of time-frequency measurements at important points distribution system interface and the exploration of a time-frequency measurement methodology that corresponds DEM/CEM models of DM/CM noise propagation that apply to the compliance of IBRs with conducted emission limit standards.
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