Optimal Transmission Line Switching to Improve the Reliability of the Power System Considering AC Power Flows

Masache, Paul; Carrion, Diego; Cardenas, Jorge A.

doi:10.3390/en14113281

Cited by 15 publications

(10 citation statements)

References 40 publications

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“…By using the OPF-AC in an EPS, the values of the power generated by each generation unit are obtained [11], as well as active and reactive powers [13], losses in the system [19], and this includes the maximum charge ability. The researchers in [20] carried out the charge ability analysis and ranking of contingencies, while [21] obtained the magnitude of the voltage, currents in buses and TL, the flow through the elements of the EPS, losses, voltage profile, and angular deviation; the parameters used to find solutions are [4] voltage profiles and angular deviation. The research in [22] adds transient stability restrictions for N-1 contingencies of the EPS using volt/var controllers through a mixed integer linear programming model for the optimization and stability of the system.…”

Section: Transmission Expansion Planningmentioning

confidence: 99%

Electrical Power Systems Reinforcement through Overall Contingency Index Analysis and Improvement

Romero,

Carrión,

Jaramillo

2024

Energies

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This paper analyzes the behavior of an electrical power system when N-1 contingencies occur in the transmission stage, which can be produced by incorrect operation of the protection relays, phenomena of natural origin, or increased loadability, which affect the operation and reliability of the electrical system. The operation output of a transmission line results in the variation of the nominal values of the electrical parameters involved because they disturb the stability of the generation, transmission systems, and the supply of electrical energy to the loads, such as voltages and angles of the nodes and the active and reactive power of the system. The proposed methodology was based on analyzing the different electrical parameters of the power system, quantifying the contingency index in a state of regular operation, and comparing it to operation in contingency N-1, with which the most severe contingency was determined and, therefore, achieved; identifying contingencies that can cause system collapses; improving the contingency index from 23.08555 to 22.9276624 for the L16–19 contingency and to 22.9795235 for the L21–22 contingency, which are the most severe contingencies determined with the proposed methodology. To test the proposed methodology, the IEEE 39 bus-bar test system was considered, and the elements that should be implemented to avoid the vulnerability of the power system to N-1 contingencies were determined.

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Section: Transmission Expansion Planningmentioning

confidence: 99%

Electrical Power Systems Reinforcement through Overall Contingency Index Analysis and Improvement

Romero,

Carrión,

Jaramillo

2024

Energies

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“…En varias publicaciones científicas relacionadas con OTS se han incrementado restricciones las cuales están relacionadas con la confiabilidad, pérdidas, congestión y estabilidad, manteniendo los criterios establecidos en OPF-DC (Abdi-Khorsand et al, 2017;Yang et al, 2015;Aazami et al, 2015;Bai et al, 2017;Li et al, 2017;Gupta et al, 2017;Masache et al, 2021).…”

Section: Conmutación óPtima De Transmisión (Ots)unclassified

Planificación de la Expansión Basada en la Máxima Cargabilidad de Líneas de Transmisión Aplicando Conmutaciones del Sistema

Galarza

Carrion

2023

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En la presente investigación, se propone una metodología para solucionar la planificación de la expansión de la transmisión (TEP) de un sistema eléctrico de potencia (SEP) a corto plazo y largo plazo, aplicando conmutaciones en la red de transmisión, contingencias y se considera los rangos máximos de capacidad de líneas de transmisión, los cuales estarán en función de un SIL ideal. El modelo propuesto se basa en la aplicación de flujos óptimos de potencia DC (OPF-DC), lo cual permitirá reducir costos de operación y definir los costos de inversión sin que la estabilidad del sistema se vea afectada. La investigación no considera el racionamiento de la demanda, la metodología será aplicada al modelo de 118 barras del IEEE, el cual será objeto de análisis al variar el número máximo de líneas de transmisión que pueden ser conmutadas, obteniendo como resultado de la aplicación de la TEP los equipos que deben ser instalados en el SEP, para evitar problemas de estabilidad. El periodo de planificación se define para 2 y 10 años con incremento de la demanda. Adicionalmente, se mostrarán cuadros comparativos de los flujos de potencia, ángulos de voltaje y potencia despachada, en condiciones actuales de operación respecto a los escenarios planificados.

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“…This may not be regarded as a general conclusion though as network topology may vary by switching different lines from service. The composite reliability of OTS with AC-OPF based formulation considering failure mitigation and disturbances reduction is presented in [172]. The impact of OTS on system reliability using reliability indices is studied in [68] for both DC and AC-OPF based formations.…”

Section: Figure 14 Flowchart For Reliability Evaluation Of Otsmentioning

confidence: 99%

The Role of Optimal Transmission Switching in Enhancing Grid Flexibility: A Review

et al. 2023

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The integration of variable renewable energy sources (RES) into power grids has resulted in a more complex operating environment for power system operators (SO), necessitating the need for increased grid flexibility. This is crucial for utilities, as the cost-effective utilization of existing infrastructure is necessary, given the prolonged construction period and high investment costs associated with building new power delivery facilities. Under the umbrella of smart grid, optimal transmission switching (OTS) is a cost-effective transmission technology that can alleviate concerns related to network congestion, limited transmission capacity, and high penetration of renewables. OTS is a concept that is integrated into the optimal power flow (OPF) problem such that it provides SO the choice to temporarily switch one or more lines out of service from the network. OTS is shown in the literature to have economic benefits, reduce operational cost, relieve network congestion, serve as a corrective mechanism for reducing voltage violations, improve system reliability, and minimize system loss. Despite the significant attention given to OTS by researchers over the past decade, no extensive review paper exists on the topic in the literature. Therefore, this paper provides a state-of-the-art overview of the OTS problem. The concept of OTS is explained by approximating the alternating current OPF problem into a linear direct current OPF problem. Various alternative models of the OTS problem proposed in the literature are discussed. The paper also analyzes the interaction between OTS and other flexibility options such as Dynamic thermal rating (DTR), Energy storage systems (ESS), and RES. Furthermore, the paper presents the general framework and impact of the short-term OTS problem on long-term expansion planning problems. Finally, an extensive literature review on the impact of OTS on system reliability is provided.

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Optimal Transmission Line Switching to Improve the Reliability of the Power System Considering AC Power Flows

Cited by 15 publications

References 40 publications

Electrical Power Systems Reinforcement through Overall Contingency Index Analysis and Improvement

Electrical Power Systems Reinforcement through Overall Contingency Index Analysis and Improvement

Planificación de la Expansión Basada en la Máxima Cargabilidad de Líneas de Transmisión Aplicando Conmutaciones del Sistema

The Role of Optimal Transmission Switching in Enhancing Grid Flexibility: A Review

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