TY - JOUR
T1 - STATCOM Impacts on Synchronous Generator LOE Protection
T2 - A Realistic Study Based on IEEE Standard C37. 102
AU - Hasani, Abbas
AU - Haghjoo, Farhad
AU - Bak, Claus Leth
AU - Silva, Filipe Miguel Faria da
PY - 2021
Y1 - 2021
N2 - The impacts of the static synchronous compensator (STATCOM) on the traditional loss of excitation (LOE) protection are investigated in this article. To do a comprehensive study, a common and realistic excitation system is developed for the generator by employing the phase-domain model of the synchronous generator accessible in the real-time digital simulator. Using such a model, the LOE phenomenon is realistically studied in accordance with IEEE Standard C37. 102-2016, while the generator dynamics along with the LOE relay performance are investigated through different types of partial and complete LOE events. It is shown that in the presence of STATCOM, two major impacts on the generator and its LOE protection can be expected: 1) it imposes an additional time delay on the relay to detect the LOE failures, which depends on the generator initial loading and the type of LOE failure and 2) it might lead the generator to reach a new stable operating point without experiencing a loss of synchronism condition, during an improper changeover from automatic voltage regulator to manual voltage regulator operating mode. The related consequences for both of the impacts are discussed in this article, and some solutions are suggested to deal with the probable negative aspects.
AB - The impacts of the static synchronous compensator (STATCOM) on the traditional loss of excitation (LOE) protection are investigated in this article. To do a comprehensive study, a common and realistic excitation system is developed for the generator by employing the phase-domain model of the synchronous generator accessible in the real-time digital simulator. Using such a model, the LOE phenomenon is realistically studied in accordance with IEEE Standard C37. 102-2016, while the generator dynamics along with the LOE relay performance are investigated through different types of partial and complete LOE events. It is shown that in the presence of STATCOM, two major impacts on the generator and its LOE protection can be expected: 1) it imposes an additional time delay on the relay to detect the LOE failures, which depends on the generator initial loading and the type of LOE failure and 2) it might lead the generator to reach a new stable operating point without experiencing a loss of synchronism condition, during an improper changeover from automatic voltage regulator to manual voltage regulator operating mode. The related consequences for both of the impacts are discussed in this article, and some solutions are suggested to deal with the probable negative aspects.
KW - Generator modeling
KW - generator protection
KW - loss of excitation (LOE) detection
KW - synchronous compensator (STATCOM)
UR - http://www.scopus.com/inward/record.url?scp=85097959935&partnerID=8YFLogxK
U2 - 10.1109/TIA.2020.3042123
DO - 10.1109/TIA.2020.3042123
M3 - Journal article
SN - 0093-9994
VL - 57
SP - 1255
EP - 1264
JO - I E E E Transactions on Industry Applications
JF - I E E E Transactions on Industry Applications
IS - 2
M1 - 9285192
ER -