Practical experience with corrective switching algorithm for on-line applications

Wrubel, J.N.; Rapcienski, P.S.; Lee, K.L.; Gisin, B.S.; Woodzell, G.W.

doi:10.1109/pica.1995.515208

Cited by 13 publications

(39 citation statements)

References 8 publications

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“…Since the early 80's [90,91] the use of switching actions has been extensively studied in the context of OPF for various purposes: line overload alleviation [42,90,91,92,93,94,95,96,97], undervoltages/overvoltages mitigation [94,96,98,99], system security enhancement [100,101], generation dispatch cost reduction [22,42,62,101], power loss reduction [102,103], or a combination of these objectives [62,96,101].…”

Section: Handling Of Discrete Variables With Large Stepsmentioning

confidence: 99%

“…These rely on one of the following techniques: heuristic techniques (e.g. considering as switching candidates only the lines electrically close to the overload [90]), simulating the switching by using compensated current/flow injection [92,102], distribution factors to relate the flow in the switched element to the other lines [93], maximal flow -minimal cost algorithm [100], sensitivities of power flows in overloaded branches with respect to the flows on branches candidate to be opened and MILP [95], ranking of candidate switching actions according to a performance index and simulation of the top candidates in a branch and bound fashion [92,94,96,98], dc power flow model and MILP [22,62,97,101,103], genetic algorithms [97], mathematical programming with equilibrium constraints [47], etc.…”

Section: Handling Of Discrete Variables With Large Stepsmentioning

confidence: 99%

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State-of-the-art, challenges, and future trends in security constrained optimal power flow

Capitanescu

Martínez-Ramos

Panciatici³

et al. 2011

Electric Power Systems Research

400

249

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This paper addresses the main challenges to the security constrained optimal power flow (SCOPF) computations. We first discuss the issues related to the SCOPF problem formulation such as the use of a limited number of corrective actions in the post-contingency states and the modeling of voltage and transient stability constraints. Then we deal with the challenges to the techniques for solving the SCOPF, focusing mainly on: approaches to reduce the size of the problem by either efficiently identifying the binding contingencies and including only these contingencies in the SCOPF or by using approximate models for the post-contingency states, and the handling of discrete variables. We finally address the current trend of extending the SCOPF formulation to take into account the increasing levels of uncertainty in the operation planning. For each such topic we provide a review of the state of the art, we identify the advances that are needed, and we indicate ways to bridge the gap between the current state of the art and these needs. * Corresponding author Email addresses: capitane@montefiore.ulg.ac.be (F. Capitanescu), camel@us.es (J.L. Martinez Ramos), patrick.panciatici@rte-france.com (P. Panciatici), kirschen@uw.edu (D. Kirschen), alejandromm@us.es (A. Marano Marcolini), ludovic.platbrood@gdfsuez.com (L. Platbrood), l.wehenkel@ulg.ac.be (L. Wehenkel) Preprint submitted to Electric Power Systems ResearchMay 2, 2011Keywords: mixed integer linear programming, mixed integer nonlinear programming, nonlinear programming, optimal power flow, security constrained optimal power flow MotivationThe SCOPF [1,2] is an extension of the OPF problem [3,4] which takes into account constraints arising from the operation of the system under a set of postulated contingencies. The SCOPF problem is a nonlinear, nonconvex, large-scale optimization problem, with both continuous and discrete variables [1,2]. The SCOPF belongs therefore to the class of optimization problems called Mixed Integer Non-Linear Programming (MINLP).The SCOPF has become an essential tool for many Transmission System Operators (TSOs) for the planning, operational planning, and real time operation of their system [5,6, 7,8]. Furthermore, in several electricity markets (e.g. PJM, New-England, California, etc.) the locational marginal prices calculated using a DC SCOPF are used to price electricity. This approach is also under consideration in other systems [9,10,11].Several papers discussing the challenges to the OPF problem were published during the 90's [5,6, 7,8]. Since then several important changes have taken place not only in power systems operation and control but also in mathematical programming:• Power systems operate today in conditions that are more "stressed" and were not foreseen at the planning stage. In particular the increase in load has not been supported by an adequate upgrade of the generation and transmission systems. Furthermore the creation of electricity markets has led to the trading of significant amounts of electrical energy over lo...

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Section: Handling Of Discrete Variables With Large Stepsmentioning

confidence: 99%

Section: Handling Of Discrete Variables With Large Stepsmentioning

confidence: 99%

State-of-the-art, challenges, and future trends in security constrained optimal power flow

Capitanescu

Martínez-Ramos

Panciatici³

et al. 2011

Electric Power Systems Research

400

249

View full text Add to dashboard Cite

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“…The purpose of switching actions applied in transmission systems in the papers analysed are summarised in Table 1. Some of these studies were developed to handle problems in real time operation and some to find solution during contingency analysis [22]. In the latter case, the solution found may be used as preventive control or kept in case the contingency under analysis occurs, which is usually preferable from the operators point of view 1171.…”

Section: Purpose Of the Switchingmentioning

confidence: 99%

A study of the use of corrective switching in transmission systems

Rolim

Machado

1999

IEEE Trans. Power Syst.

131

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This paper reviews several publications on the use of switching operations as a control means to relieve overload in transmission lines/transformers or to solve voltage problems. Previous research efforts dealing with the subject are analysed in relation to the objective of the manoeuvre, priority of this kind of action in relation to the others available and the search procedure employed, besides other implementation details.Some practical issues related to switching as a control option are also addressed in this paper. The purpose is to investigate the reasons why such procedures are adopted only in a few systems, and in most of them rarely employed.Distribution feeder reconfiguration for loss reduction or load balancing is not dealt here, neither are switching sequences for network restorative control.

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“…Ao longo dos últimos 30 anos, propuseram-se alguns algoritmos para implementação de Chaveamentos Corretivos, objetivando diferentes aplicações: Koglin and Müller (1980), Koglin and Medeiros Júnior (1983), Rossier and Germond (1983), Koglin and Medeiros Júnior (1985), Mazi et al (1986), Medeiros Júnior (1987), Medeiros Júnior (1987), Schnyder and Glavitsch (1988), Wrubel et al (1996) e Shao and Vittal (2005) objetivavam eliminar sobrecargas em linhas de transmissão; problemas relativos à tensão nos barramentos de subestações foram considerados nas proposições de Koglin and Medeiros Júnior (1987), Medeiros Jú-nior (1987) e Shao and Vittal (2005). Já o objetivo de Bacher and Glavitsch (1986) e Schnyder and Glavitsch (1988) era aumentar a segurança de sistemas elétricos.…”

Section: Introductionunclassified

“…Em 1998, Rolim and Machado (1999) apresentou uma revisão acerca das publicações que empregavam a técnica de Chaveamentos Corretivos para aliviar sobrecargas em ramos e para solucionar problemas relativos à tensão. Ademais, esses algoritmos também diferiam entre si no que concerne às diversas variantes de chaveamento aplicadas à resolução dos problemas: chaveamento de linhas de transmissão e/ou transformadores foi proposto por Koglin and Müller (1980); chaveamento de elementos shunt (capacitores ou reatores); chaveamento de barramentos de subestações, alterando a interconexão de linhas e cargas em uma subestação foi explorado por Koglin and Medeiros Júnior (1983), Rossier and Germond (1983), Koglin and Medeiros Júnior (1985), Mazi et al (1986), Medeiros Júnior (1987), Medeiros Júnior (1987), Schnyder and Glavitsch (1988), Wrubel et al (1996) e Shao and Vittal (2005).…”

Section: Introductionunclassified

Dedução de funções de alívio para estimar a influência de medidas de chaveamento na eliminação de sobrecargas a partir da técnica de injeção reversa

Júnior

Oliveira

2012

Sba Controle & Automação

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Derivation and Tests of Relief Functions to Estimate the Influence of Switching Measures in the Elimination of Overloads by Using Backward InjectionEventually, violations of voltage limits at buses or admissible loadings of transmission lines and/or power transformers may occur by the power system operation. If violations are detected in the supervision process, corrective measures may be carried out in order to eliminate them or to reduce their intensity. Loading restriction is an extreme solution and should only be adopted as the last control action. Previous researches have shown that it is possible to control constraints in electrical systems by changing the network topology, using the technique named Corrective Switching, which requires no additional costs. In previous works, the proposed calculations for verifying the ability of a switching variant in eliminating an overload in a specific branch were based on network reduction or heuristic analysis. The purpose of this work is to develop analytical derivation of linear equations to estimate current changes in overloaded branches (due to switching measures) by means of few calculations. For busbar coupling, derivations will be based on Short-circuit the-

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Practical experience with corrective switching algorithm for on-line applications

Cited by 13 publications

References 8 publications

State-of-the-art, challenges, and future trends in security constrained optimal power flow

State-of-the-art, challenges, and future trends in security constrained optimal power flow

A study of the use of corrective switching in transmission systems

Dedução de funções de alívio para estimar a influência de medidas de chaveamento na eliminação de sobrecargas a partir da técnica de injeção reversa

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