TY - JOUR
T1 - Transient Stability-Constrained Optimal Power Flow Calculation with Extremely Unstable Conditions using Energy Sensitivity Method
AU - Xia, Shiwei
AU - Shahidehpour, Mohammad
AU - Chan, Ka Wing
AU - Bu, Siqi
AU - Li, Gengyun
PY - 2020/6
Y1 - 2020/6
N2 - In this paper, a transient stability margin is proposed in terms of the kinetic energy of power systems in extremely unstable conditions. A unified energy-based transient stability constraint is formed for both normal and extremely unstable conditions in the proposed transient stability-constrained optimal power flow (TSCOPF) model. A divide-and-conquer approach is presented to solve TSCOPF by decomposing it into optimal power flow and transient stability-constrained generation sub-problems. The former is solved by an interior point method and the latter is derived by an energy sensitivity technique. Furthermore, an accuracy-based perturbation strategy is proposed to address the system over-stabilization issue, and a parallel calculation technique is implemented to speed up the TSCOPF solution. The effectiveness of the proposed approach is investigated and the results are validated using the New England 10-generator and IEEE 50-generator systems under extremely unstable conditions.
AB - In this paper, a transient stability margin is proposed in terms of the kinetic energy of power systems in extremely unstable conditions. A unified energy-based transient stability constraint is formed for both normal and extremely unstable conditions in the proposed transient stability-constrained optimal power flow (TSCOPF) model. A divide-and-conquer approach is presented to solve TSCOPF by decomposing it into optimal power flow and transient stability-constrained generation sub-problems. The former is solved by an interior point method and the latter is derived by an energy sensitivity technique. Furthermore, an accuracy-based perturbation strategy is proposed to address the system over-stabilization issue, and a parallel calculation technique is implemented to speed up the TSCOPF solution. The effectiveness of the proposed approach is investigated and the results are validated using the New England 10-generator and IEEE 50-generator systems under extremely unstable conditions.
UR - https://ieeexplore.ieee.org/document/9120183
U2 - 10.1109/TPWRS.2020.3003522
DO - 10.1109/TPWRS.2020.3003522
M3 - Journal article
SN - 0885-8950
SP - 1
EP - 1
JO - IEEE Transactions on Power Systems
JF - IEEE Transactions on Power Systems
ER -