A simpler and exact mathematical model for the computation of the minimal power losses tree

Ramos, Esther Romero; Santos, J.R.; Reyes, Juan C.

doi:10.1016/j.epsr.2009.10.016

Cited by 65 publications

(60 citation statements)

References 36 publications

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“…Adapting and extending the models proposed in [18] and [19] for the problem of service restoration leads to the optimization problem described hereafter.…”

Section: The Model Of the Optimization Problemmentioning

confidence: 99%

“…The optimization model followed in this paper adapts the models proposed in [18] and [19] for the problem of service restoration. These models rely in turn on the power flow model for radial distribution systems proposed in [20].…”

Section: Proposed Approachmentioning

confidence: 99%

“…To avoid adding a significant number of new integer variables and constraints to ensure radiality as in [18] we adopt a practical solution which consists in replacing each zero-injection bus with a very small reactive power load (of value slightly above the power flow convergence tolerance), change which practically does not affect the final result of the optimization.…”

Section: B On the Radiality Constraintsmentioning

confidence: 99%

“…Fortunately, as most distribution systems are operated radially, there is possible to reformulate the MINLP problem as a much more tractable equivalent mixed integer quadratically constrained program (MIQCP), as demonstrated in [18,19] for the power losses minimization by means of network reconfiguration. The main contribution of this paper is to adapt and further develop the MIQCP model in [18,19] to the problem of service restoration.…”

Section: Introductionmentioning

confidence: 99%

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Towards optimal post-fault self-healing in future smart distribution grids

Capitanescu

Bilibin

Sachau

2024

RE&PQJ

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Abstract. This paper deals with a key functionality of the future distribution smart grids namely the automatic post-fault network self-healing. To this end we propose an optimization approach that aims finding the post-fault grid topology that minimizes the amount of unsupplied energy to consumers. The approach extends existing optimization models, developed in the context of losses minimization, for our particular application and proposes ways to overcome their limitations. We prove the interest of the approach on a 33-bus benchmark distribution system as well as on a 61-bus real-life distribution grid.

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“…Adapting and extending the models proposed in [18] and [19] for the problem of service restoration leads to the optimization problem described hereafter.…”

Section: The Model Of the Optimization Problemmentioning

confidence: 99%

Section: Proposed Approachmentioning

confidence: 99%

Section: B On the Radiality Constraintsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Towards optimal post-fault self-healing in future smart distribution grids

Capitanescu

Bilibin

Sachau

2024

RE&PQJ

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“…• model MIQC: an equivalent mixed integer quadratically constrained (MIQC) model of the MINLP-RC model, which builds upon the model proposed in [27] for loss minimization by grid reconfiguration, and was adapted by the authors to overload management [28]. In this paper we further extend the latter model to the objective function and additional control means (e.g.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Centralized Approach for Voltage Constraints Management in Active Distribution Grid

Capitanescu

Bilibin

Ramos

2014

IEEE Trans. Power Syst.

115

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Abstract-This paper deals with the management of voltage constraints in active distribution systems that host a significant amount of distributed generation (DG) units. To this end we propose a centralized optimization approach which aims at minimizing the amount of MW curtailment of non-firm DG to remove voltage constraints. The salient feature of this approach is that it comprehensively and properly models the full variety of possible control means (i.e. DG active/reactive power including DG shut-down, on load tap changing transformer ratio, shunt capacitor, and remotely controlled switches or breakers), most of which having a discrete behavior. We develop and compare the performances of two optimization models on a snapshot basis for various distribution systems up to 1089 buses. In particular we show that the use of remotely controlled switches so as to transfer DG between feeders in case of voltage constraints may lead to significant reduction of the DG curtailment.

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Annual energy loss reduction of distribution network through reconfiguration and renewable energy sources

Hesaroor

Das

2019

Int Trans Electr Energ Syst

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Summary Renewable energy sources are becoming popular day by day for distributed generation as technology is becoming cheaper and modular. Power loss reduction is a powerful incentive for a distribution system operator to promote distributed generation. This paper presents a method to minimize annual energy losses through the integration of nondispatchable renewable distributed generation (DG) units and network reconfiguration under varying load demand condition. The optimal location and DG power level are calculated, and then these data are used to determine DG plant size taking into account the nonavailability of renewable energy at certain times. A network reconfiguration strategy is proposed, which takes into account both the time‐varying load and the renewable energy source such that annual energy loss is minimum. The proposed methodology is applied to 33‐node and 118‐node test distribution system with different scenarios. Results show a substantial reduction in energy loss. A cost‐benefit analysis is also carried out.

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A simpler and exact mathematical model for the computation of the minimal power losses tree

Cited by 65 publications

References 36 publications

Towards optimal post-fault self-healing in future smart distribution grids

Towards optimal post-fault self-healing in future smart distribution grids

A Comprehensive Centralized Approach for Voltage Constraints Management in Active Distribution Grid

Annual energy loss reduction of distribution network through reconfiguration and renewable energy sources

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