Bi-annual Newsletters Vol. 6 | Page 9

Network Model Pparameter Error (continued) Faculty News Dr. Yilu Liu, Deputy Director for CURENT, has been inducted into the National Academy of Inven- tors (NAI). The academy recog- nized Liu for her “spirit of inno- vation” and for the impact of her work on everyday life. She and the other NAI inductees were recognized at the academy’s annual conference on April 6, 2017, in Boston, MA. Besides the improvement of computational ef- ficiency, an enhanced version of the NLMNR test, which exploits multiple measurement scans, is also developed. This test first identifies those pa- rameters whose errors are difficult to detect, and then determines the minimum number of scans needed to ensure their detection thus avoiding unnecessary computational effort. Simulation results validate the improvement in NLMNR test’s performance as the number of measurement scans is increased, both for an individual param- eter (Fig. 3) as well as for the entire system (Fig. 4). Finally, an efficient scheme to correct the iden- tified parameter errors is also developed. Tra- ditionally, suspicious parameters are estimated using by including the parameters in the state vector, and performing the augmented nonlinear state estimation. The novel correction scheme has several notable advantages over the traditional solution: negligible computational burden, free from numerical stability issues, and very modest coding effort. The accuracy of the results is also guaranteed. We are currently undertaking a project with ISO New England, one of CURENT’s industry mem- bers, to address the issue of parameter errors in their transmission system. Results of the devel- oped method applied to ISO-New England’s net- work data will be reported in the near future. ~end~ . Above: Dr. Yilu Liu Dr. Fran Li, UTK Campus Director for CURENT, was recently named an IEEE Fellow, effective January 1, 2017. He was recognized for his work in power system markets, specifically for “for contribu- tions to locational marginal price calculation.” Within IEEE, Dr. Li is also serving or has served as Vice Chair of IEEE PES PSPI Commit- tee, Co-Vice Chair of PES PSOPE Committee, an Editor of IEEE Transactions on Sustainable Ener- gy and of IEEE PES Letters and a Guest Editor of IEEE Transactions on Smart Grid and of IEEE Trans- actions on Industrial Informatics. Above: in the NEU Lab - Yuzhang Lin (PhD student), Dr. Ali Abur, Arthur Mouco (PhD Student), Alina Rossi-Conaway (undergraduate reseacher), Gianna Scioletti (undergraduate researcher) and Alireza Rouhani (PhD student) Above: Dr. Fran Li Spring 2017 CURENT Newsletter 6