Corrective Control of Power System Flows by Line and Bus-Bar Switching

Mazi, A. A.; Wollenberg, B.F.; Hesse, Martin

doi:10.1109/tpwrs.1986.4334990

Cited by 163 publications

(50 citation statements)

References 3 publications

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“…3. The goal here is to minimise the objective function described in (1) and (2). The optimisation problem in each area is described as…”

Section: Optimal DV Control Considering Drmentioning

confidence: 99%

“…However, a majority of them are costly in practice. Few control actions can be found with reasonable cost such as transmission lines switching [1,2], which employs flexible AC transmission system (FACTS) devices [3][4][5] and synchronous condensers used in HV/MV substation level. This approach is not yet suitable for the distribution networks.…”

Section: Introductionmentioning

confidence: 99%

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End‐user participation in a collaborative distributed voltage control and demand response programme

Abessi

Zakariazadeh

Vahidinasab

et al. 2018

IET Generation, Transmission & Distribution

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A new generation of electric appliances with controllable reactive power creates an opportunity for operators in distribution systems to be used as a resource for reactive power support. On the other hand, implementing demand response (DR) programmes as an alternative resource to manage the active power demand may also affect the reactive power balance. Collaborative effect of reactive power support devices and the DR programme is investigated in order to control voltage problem in a distribution network. In the first step, distributed voltage (DV) control and DR methods are considered as individual control actions; then, the hybrid DV control with DR (DVDR) method is proposed to improve the voltage profile. The IEEE 33-bus distribution standard test system is chosen for validating the novel method, in which the optimum reactive power injection in the candidate buses and demand curtailment in each area are calculated. The proposed DVDR method can better mitigate the voltage problem and the results showed far desirable performance compared with using just DR or DV methods. The proposed method can also curtail less demand in comparison to the DR method.reactive power in the grid. With modern bidirectional chargers, EVs are able to produce reactive power while consuming active power [16,17] and inject the active power into the grid when demanded.DV control can be one of the best control actions in the smart grid showing low communication cost [18,19]. For instance, the authors in [18] proposed DV control to improve the voltage profile. In their design, load tap changer and distributed generation's (DG's) reactive rate are used as control variables. However, they have ignored the effects of end-user devices and DR on voltage profile.The centralised control action, on the other hand, can perform best for voltage mitigation in integrated scenarios. However, the centralised method can cause a low-latency, low-throughput communication network when used in sophisticated grid communication scenarios. DV control, however, is a strong candidate since the sub-systems are independent without any necessary inter-communication links. This results in a massive reduction of the number of data packets normally exchanged between the links. Note that in general voltage mitigation quality in centralised control is relatively higher than the DV control.

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“…3. The goal here is to minimise the objective function described in (1) and (2). The optimisation problem in each area is described as…”

Section: Optimal DV Control Considering Drmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

End‐user participation in a collaborative distributed voltage control and demand response programme

Abessi

Zakariazadeh

Vahidinasab

et al. 2018

IET Generation, Transmission & Distribution

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“…No entanto, a aplicação do FPE está limitada a condições normais de operação, já que, como na modelagem barra-ramo, a convergência do FP não é garantida em situações de emergência. O FPE pode também ser incorporado à classe de ACCs que não incoporam técnicas de otimização em sua formulação, ou seja, aqueles baseados na busca da configuração ótima da rede através da execução sucessiva de fluxo de potência, tais como (Mazi et al, 1986;Wrubel et al, 1996).…”

Section: Relevância Da Modelagem Da Rede Elétrica No Nível De Seção Dunclassified

“…A necessidade de analisar diferentes arranjos das subestações para o mesmo problema exige a representação de disjuntores no modelo da rede. Os artifícios atualmente empregados nos ACC para adaptar essa necessidade à modelagem barra-ramo da rede (Mazi et al, 1986;Wrubel et al, 1996;Granelli et al, 2006) tendem a causar problemas numéricos no processo de solução, enfatizando a importância do aprimoramento da modelagem detalhada da rede nas ferramentas de análise em tempo real.…”

Section: Introductionunclassified

Modelagem de ramos de impedância nula no problema de fluxo de potência ótimo

Rosas

Lourenço

Fernandes

2012

Sba Controle & Automação

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Este artigo propõe a extensão da formulação do problema de Fluxo de Potência Ótimo (FPO) com o objetivo de permitir o processamento de redes elétricas, modeladas no nível físico. Ao contrário da formulação convencional, baseada na modelagem barra-ramo da rede, a extensão proposta permite a representação explícita de chaves e disjuntores de subestações selecionadas da rede. A metodologia proposta está baseada na representação de ramos de impedância nula da estimação de estados generalizada, recentemente incorporada também ao problema de fluxo de potência. Desta forma, os fluxos de potência ativa e reativa através das chaves e disjuntores, requeridos na modelagem detalhada da rede, passam a ser incluídos como novas variáveis de estado. Além disso, as informações referentes às posições (fechado ou aberto) desses dispositivos são incluídas no conjunto de restrições de igualdade do problema de FPO. O impacto das modificações propostas na solução do FPO pelo método de pontos interiores, bem como potenciais aplicações da nova abordagem são apresentados e discutidos. Resultados envolvendo o sistema teste padrão de 30 barras do IEEE e um sistema real de 291 barras baseado no sistema elétrico da Companhia Paranaense de Energia - COPEL, são apresentados a fim de ilustrar e demonstrar a viabilidade da metodologia proposta.

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“…Compared with other methods, line switching has more advantages in terms of cost reduction, fast speed, and accuracy improvement [6,7]. Relevant work has illustrated the effectiveness of line switching in relieving line overloads [8][9][10][11][12][13][14][15], reducing transmission losses and generation cost [16][17][18][19][20], assisting in load recovery, improving voltage profiles, relieving system congestion, and enhancing system reliability [21][22][23][24][25][26].Guo [27] proposed that for extra-high-voltage power systems, line switching can be used to relieve voltage violations at low-load periods. In order to avoid computational intractability, a basic mixed-integer nonlinear program formula is transformed into a mixed-integer linear program in this reference.…”

mentioning

confidence: 99%

Corrective Control by Line Switching for Relieving Voltage Violations Based on A Three-Stage Methodology

Shen

Tang²,

Jiang³

et al. 2019

Energies

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An online line switching methodology to relieve voltage violations is proposed. This novel online methodology is based on a three-stage strategy, including screening, ranking, and detailed analysis and assessment stages for high speed (online application) and accuracy. The proposed online methodology performs the tasks of rapidly identifying effective candidate lines, ranking the effective candidates, performing detailed analysis of the top ranked candidates, and supplying a set of solutions for the power system. The post-switching power systems, after executing the proposed line switching action, meet the operational and engineering constraints. The results provided by the exact Alternating Current (AC) power flow are used as a benchmark to compare the speed and accuracy of the proposed three-stage methodology. One feature of the methodology is that it can provide a set of high-quality switching solutions from which operators may choose a preferred solution. The effectiveness of the proposed online line switching methodology in providing single-line switching and multiple-line switching solutions to relieve voltage violations is evaluated on the IEEE 39-bus and 2746-bus power system. The CPU time of the proposed methodology compared with that under AC power flow constitutes a speed-up of 9905.32% on a 2746-bus power system, showing good potential for online application in a large-scale power system.

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Corrective Control of Power System Flows by Line and Bus-Bar Switching

Cited by 163 publications

References 3 publications

End‐user participation in a collaborative distributed voltage control and demand response programme

End‐user participation in a collaborative distributed voltage control and demand response programme

Modelagem de ramos de impedância nula no problema de fluxo de potência ótimo

Corrective Control by Line Switching for Relieving Voltage Violations Based on A Three-Stage Methodology

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