Corrective Switching Algorithm for Relieving Overloads and Voltage Violations

Shao, Wei; Vittal, Vijay

doi:10.1109/tpwrs.2005.857931

Cited by 243 publications

(107 citation statements)

References 16 publications

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“…From this process, one outstanding subproblem was not solved to optimality before reaching a node limit. 11 The best found objective function value is -1542.8904, with a known upper bound of -1542.8900. This translates to an optimality gap of 3x10 -7 .…”

Section: Practical Solution Difficultiesmentioning

confidence: 99%

“…Regrettably, the addition of 10 The problem with j = 13 was terminated suboptimally after 40 hours. 11 As an indication of how large this problem is, the outstanding problem is the 359,422 nd subproblem of the original partition, and the 958 th partition of this subproblem. cuts to the model is imperative to reduce the amount of nodes that the branch and bound process has to explore.…”

Section: Practical Solution Difficultiesmentioning

confidence: 99%

“…Transmission switching has been explored in the literature as a control method for problems such as over-or under-voltage situations, line overloads [6], loss and/or cost reduction [7], improving system security [8], or a combination of these [9] [10] [11]. Our investigation of optimal transmission switching extends this literature by probing the degree to which transmission switching could increase economic efficiency of power system dispatch.…”

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confidence: 95%

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Optimal transmission switching

Fisher

O’Neill

Ferris

2009

2009 IEEE Power &Amp; Energy Society General Meeting

193

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Abstract--In this paper, we formulate the problem of finding an optimal generation dispatch and transmission topology to meet a specific inflexible load as a mixed integer program. Our model is a mixed-integer linear program because it employs binary variables to represent the state of the equipment and linear relationships to describe the physical system. We find that on the standard 118-bus IEEE test case a savings of 25 percent in system dispatch cost can be achieved.

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Section: Practical Solution Difficultiesmentioning

confidence: 99%

Section: Practical Solution Difficultiesmentioning

confidence: 99%

mentioning

confidence: 95%

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Optimal transmission switching

Fisher

O’Neill

Ferris

2009

2009 IEEE Power &Amp; Energy Society General Meeting

193

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“…Researchers have made many attempts to find effective methods to solve AC optimal TS (ACOTS) problems. In [11][12][13][14][15], linearization methods are used to deal with loss reduction or voltage violation problems. The best switching actions are determined iteratively using sensitivities or by formulating a linear programming model.…”

Section: Introductionmentioning

confidence: 99%

Optimal transmission switching to eliminate voltage violations during light-load periods using decomposition approach

Zhao

Zhou

et al. 2018

J. Mod. Power Syst. Clean Energy

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With the rapid load increase in some countries such as China, power grids are becoming more strongly interconnected, and the differences between peak and valley loads are also increasing. As a result, some bulk power systems are facing high voltage limit violations during light-load periods. This paper proposes to utilize transmission switching (TS) to eliminate voltage violations. The TS problem is formed as a mixed-integer nonlinear program (MINLP) with AC power flow constraints and binary variables. The proposed MINLP problem is non-deterministic polynomial hard. To efficiently solve the problem, a decomposition approach is developed. This approach decomposes the original problem into a mixedinteger linear programming master problem and an AC optimal power flow slave problem that is used to check the AC feasibility. Prevention of islanding is also taken into consideration to ensure the feasibility of the TS results. The modified IEEE 39-bus and IEEE 57-bus test systems are used to demonstrate the applicability and effectiveness of the proposed method.

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“…is a very low cost and sometimes very effective control means in power systems operation [1], [2], [3]. Network switching operations have been studied in the context of Optimal Power Flow (OPF) problems for various purposes (e.g., overload removal [4], [5], undervoltages/overvoltages alleviation [5], power loss reduction [6], [7], N-1 security improvement [8], generation dispatch cost reduction [3], [9], [10], [11], [12], [13], [14], etc.). The survey papers [1], [2], [3] provide extensive literature on this topic.…”

Section: Introductionmentioning

confidence: 99%

An AC OPF-based heuristic algorithm for optimal transmission switching

Capitanescu

Wehenkel

2014

2014 Power Systems Computation Conference

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Abstract-This paper focuses on reducing generators dispatch cost by means of transmission line switching. The problem is formulated as a mixed-integer nonlinear program (MINLP) optimal power flow (OPF). A scalable heuristic algorithm is proposed to break-down the complexity of the problem due to the huge combinatorial space. The algorithm aims at providing the sequence of lines to be removed from service, one at the time, until no further decrease in the dispatch cost can be obtained. It identifies the line candidate for removal at each step by exploiting the (continuously relaxed values of) lines breaker statuses at the solution of a relaxed OPF problem. The algorithm thus relies on solving a sequence of OPF problems formulated as nonlinear programs (NLPs). The effectiveness of the approach is demonstrated on the IEEE118-bus system. Results show that the approach can provide good quality sub-optimal solutions with relatively small computational effort and by removing only few lines from service.

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Corrective Switching Algorithm for Relieving Overloads and Voltage Violations

Cited by 243 publications

References 16 publications

Optimal transmission switching

Optimal transmission switching

Optimal transmission switching to eliminate voltage violations during light-load periods using decomposition approach

An AC OPF-based heuristic algorithm for optimal transmission switching

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