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