Challenges to optimal power flow

Momoh, James A.; Koessler, R.J.; Bond, M.S.; Stott, B.; Sun, D.; Papalexopoulos, A.; Ristanovic, P.

doi:10.1109/59.575768

Cited by 197 publications

(103 citation statements)

References 4 publications

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“…Despite the facts that the controller is implemented on one of the highest level programming languages (Matlab) and that it spends most of its time getting simulations from the power system model (converted from Dymola to Simulink). With all these in mind a prediction horizon up to 30 an acceptable voltage level can not restored and voltage collapse is inevitable under the actual constraints on the different control inputs. This is closely related to critical time approaches, [34].…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The same quantity is plotted in figure 5 with respect to variations in the steady state reactive power demand 0 Q in equations (2) As we shall see later, one can not rely only on static analysis to derive control policies. This is the optimal power flow based methods (purely static setting) as known in literature see e.g., [30]. This methodology can be satisfactory, when the static analysis's derived controls are applied as soon as the fault appears, or the case where some advanced heuristics are introduced leading to efficient timing of the different actions.…”

Section: Power System Analysismentioning

confidence: 99%

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Voltage Collapse Avoidance in Power Systems: A Receding Horizon Approach

Attia¹,

Alamir²,

Wit³

2006

Intelligent Automation & Soft Computing

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ABSTRACT-In this paper, a receding horizon control approach is developed for voltage stabilization in power systems. The primary focus is on a benchmark system proposed in the context of a European project. The system is termed hybrid due to the finite set of control inputs, state automata description of the voltage primary controller and their interactions with the load nonlinear continuous dynamics. Moreover, the network topology imposes hard constraints on the states. All these make the control problem quite challenging. For different realistic scenarios, the proposed control algorithm is shown to stabilize the bus voltages at acceptable levels. The computational demand fits the real time allowed slot, making the scheme attractive for large scale applications as an area central controller.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Power System Analysismentioning

confidence: 99%

Voltage Collapse Avoidance in Power Systems: A Receding Horizon Approach

Attia¹,

Alamir²,

Wit³

2006

Intelligent Automation & Soft Computing

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“…Meanwhile, from the power grid companies' perspective, determining how to reduce the operation cost is important too. Based on the optimal power flow (OPF) method [38], this paper proposes an optimal dispatch model based on the improved carbon emission flow theory. The OPF is a complex non-linear programming problem [39], in which the power system will operate in a steady state to achieve a predetermined optimal target by adjusting available control means.…”

Section: The Carbon Emission Flow Based Optimal Dispatch Strategy Conmentioning

confidence: 99%

A Power System Optimal Dispatch Strategy Considering the Flow of Carbon Emissions and Large Consumers

et al. 2015

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Abstract:The carbon emissions trading market and direct power purchases by large consumers are two promising directions of power system development. To trace the carbon emission flow in the power grid, the theory of carbon emission flow is improved by allocating power loss to the load side. Based on the improved carbon emission flow theory, an optimal dispatch model is proposed to optimize the cost of both large consumers and the power grid, which will benefit from the carbon emissions trading market. Moreover, to better simulate reality, the direct purchase of power by large consumers is also considered in this paper. The OPF (optimal power flow) method is applied to solve the problem. To evaluate our proposed optimal dispatch strategy, an IEEE 30-bus system is used to test the performance. The effects of the price of carbon emissions and the price of electricity from normal generators and low-carbon generators with regards to the optimal dispatch are analyzed. The simulation results indicate that the proposed strategy can significantly reduce both the operation cost of the power grid and the power utilization cost of large consumers.

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“…Discussions on the possibility of including stability constraints into standard OPF formulations can be found in [19], [21], [22]. It is well-understood that voltage and thermal constraints be modeled via algebraic equations or inequalities [19]- [21].…”

mentioning

confidence: 99%

Stability-constrained optimal power flow

Gan

Thomas

Zimmerman

2000

IEEE Trans. Power Syst.

417

242

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Abstract-Stability is an important constraint in power system operation. Often trial and error heuristics are used that can be costly and imprecise. A new methodology that eliminates the need for repeated simulation to determine a transiently secure operating point is presented. The theoretical development is straightfforward: dynamic equations are converted to numerically equivalent algebraic equations and then integrated into the standard OPF formulation. Implementation issues and simulation results are discussed in the context of a 162-bus system.

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Challenges to optimal power flow

Cited by 197 publications

References 4 publications

Voltage Collapse Avoidance in Power Systems: A Receding Horizon Approach

Voltage Collapse Avoidance in Power Systems: A Receding Horizon Approach

A Power System Optimal Dispatch Strategy Considering the Flow of Carbon Emissions and Large Consumers

Stability-constrained optimal power flow

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