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Chance-Constrained Economic Dispatch With Non-Gaussian Correlated Wind Power Uncertainty
- Zhiwen Wang, Chen Shen, F. Liu, Xiangyu Wu, Chen-Ching Liu, F. Gao
- Computer ScienceIEEE Transactions on Power Systems
- 22 February 2017
This paper provides a novel method dealing with non-Gaussian random variables in wind farm decision making as a chance-constrained economic dispatch problem that can be solved as a deterministic linear convex optimization with a global optimal solution.
Fast Screening of Vulnerable Transmission Lines in Power Grids: A PageRank-Based Approach
A PageRank-based fast screening method is derived to identify VLs, and the concept of interaction graph is extended to model cascading outages as a directed weighted graph, where impacts of hidden failures are first taken into account.
A Distributed, Cooperative Frequency and Voltage Control for Microgrids
A novel secondary frequency and voltage control method for islanded microgrids based on distributed cooperative control using a sparse communication network where each DG unit only requires local and its neighbors’ information to perform control actions.
A Jacobian-free Newton-GMRES(m) method with adaptive preconditioner and its application for power flow calculations
The results show that the adaptive preconditionser can enhance convergence of Newton-GMRES(m) iteration schemes greatly and has stronger robustness compared with other precondition methods.
Feasible Range and Optimal Value of the Virtual Impedance for Droop-Based Control of Microgrids
This paper presents a systematic method to determine the feasible range and optimal value of the virtual impedance of the droop-based control to enhance a microgrid system performance with respect to…
A Conditional Model of Wind Power Forecast Errors and Its Application in Scenario Generation
Multi-stage underfrequency load shedding for islanded microgrid with equivalent inertia constant analysis
Risk-Limiting Load Restoration for Resilience Enhancement With Intermittent Energy Resources
- Zhiwen Wang, Chen Shen, Yin Xu, F. Liu, Xiangyu Wu, Chen-Ching Liu
- EngineeringIEEE Transactions on Smart Grid
- 18 April 2017
Results indicate that networked microgrids can perform better in uncertainty management relative to stand-alonemicrogrids.
An Adjustable Chance-Constrained Approach for Flexible Ramping Capacity Allocation
- Zhiwen Wang, Chen Shen, F. Liu, Jianhui Wang, Xiangyu Wu
- EngineeringIEEE Transactions on Sustainable Energy
- 1 August 2017
A concept of conditional distributions of wind power ramping is proposed, which is empirically verified by using simulation and real-world data and an adjustable chance-constrained approach to optimally allocate FRC reserves is developed.
Fast Searching Strategy for Critical Cascading Paths Toward Blackouts
An improved interaction graph is constructed to cope with the situation where the $(N-1)$ criterion is not satisfied during the follow-up cascade propagation after an initial fault, and a modified PageRank model is derived to fast rank the influence of individual transmission lines on blackout risks.