DC Power Flow Revisited

Stott, B.; Jardim, Jorge L.; Alsaç, O.

doi:10.1109/tpwrs.2009.2021235

Cited by 887 publications

(546 citation statements)

References 18 publications

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“…This paper begins with a study of linearized DC model, which confirms a number of its inaccuracies observed elsewhere (e.g., [11]). The paper then proposes three new linear programming models for power systems that address the main source of inaccuracies in the linearized DC model.…”

supporting

confidence: 77%

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Approximating line losses and apparent power in AC power flow linearizations

Coffrin

Hentenryck

Bent

2012

2012 IEEE Power and Energy Society General Meeting

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Abstract-The linearized DC model is widely used in optimization of power systems but few studies evaluate the accuracy and feasibility of its solutions. This paper studies the source of errors in the linearized DC model and proposes three new models to improve its accuracy. In particular, it proposes a cold-start model capturing line losses and hot-starts models for approximating apparent power and more accurate phase angles. All of the models are linear programs and can easily be used as a building block for more complex applications. Experimental results on well-known benchmarks show the significant benefits in accuracy of the new models and the high correlation of their solutions with AC solutions.Index Terms-power flow, dc power flow, power system analysis, line losses, apparent power.

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supporting

confidence: 77%

“…Despite the ubiquity of linearized DC model, there are surprisingly few studies on its accuracy. Three seminal references on this topic are [1], [11], [12]. The accuracy of the linearized DC model on random power networks and the Belgian high voltage network was studied in [12].…”

Section: A Brief Review Of Prior Workmentioning

confidence: 99%

Approximating line losses and apparent power in AC power flow linearizations

Coffrin

Hentenryck

Bent

2012

2012 IEEE Power and Energy Society General Meeting

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“…3) Up to N -2 simultaneous outages of transmission lines are considered, for the ENENS computation. 4) A DC-OPF is used, due to advantages of an AC based model [24].…”

Section: Methodsmentioning

confidence: 99%

“…Equation (11) is the objective function, constraint (12) represents the nodal balance of active power, constraint (13) represents the minimum and maximum generation limits for each unit, constraint (14) is the maximum power flow of each transmission line, constraint (15) is the limit of the virtual generation, constraint (16) is the limit of the active power reserve of the contributing generators, constraint (17) is the active power of each generator's reserve from exceeding each generator's maximum output, constraints (18) and (19) represent the limits of the upward ramps of the dispatched generators, constraint (20) is the power output of the ramp ups for the dispatched generators, constraints (21) and (22) are the limits of the ramp downs of the dispatched generators, constraint (23) the output power of the generator ramp-downs does not exceed the maximum active power ramp-down of the system reserve, constraint (24) represent the physical limits of the ramps of the dispatched generators.…”

Section: Optimal Power Flowmentioning

confidence: 99%

Nodal user’s demand response based on incentive based programs

González-Cabrera

Gutiérrez-Alcaraz

2017

J. Mod. Power Syst. Clean Energy

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This paper describes a practical approach to identify nodal price compensation payment for nodal consumers willing to reduce their energy consumption (consumers' demand response). The implementation of a nodal reliability service pricing is based on contingency assessment of N -2 order for transmission lines. A representative annualized demand curve is used to reflect the system's operation condition by seasons. Such curve is used to access the nodal reliability impact trough a whole year in order to determine back-payments (incentive payment) to users for service interruption. The IEEE_RTS 24 nodes system is used to implement the proposed approach.

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“…In transmission systems, branches are assumed to have a high X/R ratio, permitting application of the dc power flow approximations [62,63]. Under these assumptions, the |Z thev ij| distance predicts the change in voltage angle required to transmit a unit of active power from one bus, i, for reception at j, holding all other system quantities constant.…”

Section: ) Thevenin Impedance Distancementioning

confidence: 99%