To mitigate the risk to secure and adequate operation of power systems under storm conditions
this paper proposes a synergistic control decision-making method aimed at enhancing adequacy and power angle stability. Firstly
the output from wind farms outside storm-affected areas is predicted using the Informer model
providing input for subsequent optimization models. Secondly
based on a “decoupling optimization
aggregation and coordination” strategy
the method decouples system adequacy optimization from power angle stabilization control. For adequacy optimization
operational risk costs are reduced by scheduling adjustable resources. For power angle stabilization
the extended equal-area criterion quantifies the transient stability margin
and preventive-emergency control synergy is applied for each fault scenario to ensure stability. A two-layer optimization model is then constructed and solved iteratively. Finally
case studies on a modified IEEE 39-node system demonstrate the benefits of the proposed model in reducing system load loss and enhancing grid security.
HUANG G, WANG J H, CHEN C, et al.Integration of preventive and emergency responses for power grid resilience enhancement[J]. IEEE transactions on power systems, 2017, 32(6): 4451-4463.
DING T, QU M, WANG Z K, et al.Power system resilience enhancement in typhoons using a three-stage day-ahead unit commitment[J]. IEEE transactions on smart grid, 2021, 12(3): 2153-2164.
XU Y, DONG Z Y, ZHANG R, et al.A decomposition-based practical approach to transient stability-constrained unit commitment[J]. IEEE transactions on power systems, 2015, 30(3): 1455-1464.
YUAN H L, XU Y.Preventive-corrective coordinated transient stability dispatch of power systems with uncertain wind power[J]. IEEE transactions on power systems, 2020, 35(5): 3616-3626.