Uncertainty in power system modeling and computation

Alvarado, F.L.; Hu, Yingying; Adapa, R.

doi:10.1109/icsmc.1992.271535

Cited by 26 publications

(7 citation statements)

References 15 publications

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“…The power generation of DEG must evolve the fluctuations in loads and DGs in equation (2). In literature the optimal power flow (OPF) problem has been investigated based on linear and non-linear programming such as [1,4,5,6,11,16]. In contrary, we will formulate the considered problem as an optimal control one in order to find out the optimal policies for operation of microgrid in the next section.…”

Section: Study Objectmentioning

confidence: 99%

Novel Control Approach for Optimal Power Flow in Hybrid Wind-Photovoltaic-Diesel Generation Systems

Diep

Quang²,

Huy³

2017

JCC

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The paper deals with a formulation of an analytical control model for optimal power flow in an islanded microgrid (MG). In an MG with load change, wind power fluctuation, sun irradiation power disturbance, that can significant influence the power flow, and hence the power flow control problem in real life system faces some new challenges. In order to maintain the balance of power flow, a diesel engine generator (DEG) needs to be scheduled. The objective of the control problem is to find the DEG output power by minimizing the total cost of energy. Using the Bellman principle, the optimality conditions obtained satisfy the Hamilton-Jacobi-Bellman equation, which depends on time and system states, and ultimately, leads to a feedback control or to the so called energy management to be implemented in a SCADA system

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Section: Study Objectmentioning

confidence: 99%

Novel Control Approach for Optimal Power Flow in Hybrid Wind-Photovoltaic-Diesel Generation Systems

Diep

Quang²,

Huy³

2017

JCC

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“…The reachability problem in power systems subject to uncertainties has been addressed before in the context of power flow analysis, without consideration to dynamic issues (e.g., see [10], [11], [12] and the references therein). Reachability analysis has also been used in power systems transient stability analysis for computing the domain of attraction of an equilibrium point [13].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Impact of Wind Variability on Power System Small-Signal Reachability

Chen

Domínguez-García

2011

2011 44th Hawaii International Conference on System Sciences

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We propose a method to assess the impact on power system dynamic performance of operational uncertainty caused by variability in the system supply side. Operational uncertainty is not new to power systems, e.g., demand variability. However, with the increased penetration of renewable-based generation, operational uncertainty will extend to a significant portion of the supply side, which may have an impact on system dynamic performance, e.g., frequency or voltage deviations beyond prescribed operational requirements. To address the problem, we propose the use of reachability analysis techniques, which will provide bounds on worst-case deviations of system variables that must remain within certain bounds. The method is illustrated with several examples.

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“…The reachability problem in power systems subject to uncertainties has been addressed before in the context of power flow analysis, where the system model is a nonlinear algebraic equation (e.g., see [8], [9], [10] and the references therein). Reachability analysis tools have also been used in power systems transient stability analysis for computing the domain of attraction on an equilibrium point [11].…”

Section: Introductionmentioning

confidence: 99%

On input-to-state stability notions for reachability analysis of power systems

Miiller

Domínguez-García

2010

Proceedings of 2010 IEEE International Symposium on Circuits and Systems

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We discuss the concept of input-to-state stability in dynamical systems and its application to address the reachability problem in power systems, i.e., what are the bounds on all possible system trajectories given certain parameters are unknown but bounded. We illustrate the application of the concept with a single-machine infinite-bus system where the infinite bus voltage is not perfectly known except for an upper and lower bound.

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Uncertainty in power system modeling and computation

Cited by 26 publications

References 15 publications

Novel Control Approach for Optimal Power Flow in Hybrid Wind-Photovoltaic-Diesel Generation Systems

Novel Control Approach for Optimal Power Flow in Hybrid Wind-Photovoltaic-Diesel Generation Systems

Assessing the Impact of Wind Variability on Power System Small-Signal Reachability

On input-to-state stability notions for reachability analysis of power systems

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