A dynamic programming-based heuristic approach for optimal transmission switching problem with N-1 reliability criterion

Pourahmadi, Farzaneh; Jooshaki, Mohammad; Hosseini, Seyed Hamid

doi:10.1109/pmaps.2016.7764208

Cited by 13 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…An AC-OPF based OTS reliability assessment with N-1 standards is studied on the Tennessee Valley Authority (TVA) network in [170] to show that OTS can help relive voltage and thermal violations in post-contingency situations. A dynamic programming approach is used to model OTS in an AC-OPF based formulation considering the N-1 security analysis to reduce the computational time of solving the problem [171]. On the contrary, the authors in [102] argue that system reliability using AC-OPF based formulation remains unchanged while DC based model can help improve system reliability.…”

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

View full text Add to dashboard Cite

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.

show abstract

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

View full text Add to dashboard Cite

show abstract

“…Fundamentally, it is the lack of harmony between the reactance, capacity, and location of these bottleneck lines that causes the congestion elsewhere. Indeed, the various existing optimal transmission switching methodologies [13]- [16] could be viewed in this light, as removing a line increases its reactance to infinity.…”

Section: A Shadow Capacity Analysismentioning

confidence: 99%

A Congestion Alleviation Technique Exploiting Structural Insights on the Interaction of Line Loading Limits, Reactance and Line Outage Security Constraints

Beiranvand

Cuffe

2022

IEEE Trans. Power Syst.

View full text Add to dashboard Cite

Line outage security constraints ensure that a proposed generating schedule will not load any line to the point where its removal causes more overloading elsewhere. These security constraints increase operating costs by occasionally precluding the usage of the cheapest generation sources. That is, power networks frequently suffer congestion in this (𝑁 − 1) sense. To explore the structural origins of such (𝑁 − 1) congestion, this paper defines a new metric for branches within a grid, shadow capacity, which gauges the maximum flow on a branch before its removal would tend to overload other lines elsewhere. Using this novel metric, we argue the (𝑁 − 1) congestion is a consequence of imbalances in the pattern of line reactances and capacities across a network. To further explore the insights offered by the shadow capacity analysis, a novel methodology to relieve (𝑁 − 1) congestion and hence improve the grid's loadability is developed. This technique adds fixed reactance to certain lines in the grid to boost their shadow capacities. These results show modest alleviation of actual (𝑁 − 1) congestion, which shows the potential value of optimising power networks through the lens of shadow capacity enhancement.

show abstract

“…El análisis principalmente se lo realiza bajo los parámetros de voltajes del sistema [11][16] [28]. El tipo de problema que se plantea es MILP (programación lineal entera mixta), con variables binarias; las variables binarias representaran el estado de operación de las líneas, también es necesario el uso de un Flujo de Potencia Optimo para verificar el comportamiento del SEP antes y después de la perturbación [29], [30], [31]; por medio de un flujo óptimo de carga se obtendrá los niveles de potencia que se genera para abastecer la etapa de demanda, por ultimo con el OTS se obtiene la topología de la etapa de transmisión después de la perturbación [32] [33]. La finalidad es mantener la estabilidad del sistema, reduciendo el uso de los recursos; otro factor importante del método OTS es reducir el costo operativo cuando el sistema presenta fallas inesperadas, manteniendo niveles de tensión y frecuencia de manera óptima y satisfaciendo el balance de potencias (la potencia generada será igual a la demanda necesaria más las pérdidas producidas en el sistema) [34] [35].…”

Section: Aplicaciones De La Conmutación De Líneas De Transmisiónunclassified

Estado del Arte de conmutación de líneas de transmisión con análisis de contingencias

Masache

Carrion

2019

I+D Tecnológico

View full text Add to dashboard Cite

La presente investigación está enfocada en óptima conmutación de líneas de transmisión (OTS) posterior a la presencia de contingencias N-1 en los sistemas de potencia; por medio de OTS se reconfigura la etapa de transmisión tras producirse una falla, de esta manera; se busca disminuir la pérdida o salida de demanda del sistema y de reducir la probabilidad de un apagón masivo. OTS es un método muy flexible que permite solventar varios problemas que se presentan en el sistema eléctrico; principalmente en pérdidas y costos operativos. Se plantean las ecuaciones que rigen al OTS y una aproximación del método; el objetivo del uso de OTS es de mantener en los márgenes mínimos de operación al sistema eléctrico (tensión, frecuencia, el balance de potencias entre la etapa de generación y la demanda), frente a una contingencia N-1 y se evaluará la confiabilidad del SEP tanto en prefalla, como en postfalla por medio de los índices de confiabilidad. OTS es una metodología que permite reestructurar la etapa de transmisión del SEP, para mantener los niveles adecuados al sistema y reducir las pérdidas que pueden producirse.

show abstract

A dynamic programming-based heuristic approach for optimal transmission switching problem with N-1 reliability criterion

Cited by 13 publications

References 15 publications

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

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

A Congestion Alleviation Technique Exploiting Structural Insights on the Interaction of Line Loading Limits, Reactance and Line Outage Security Constraints

Estado del Arte de conmutación de líneas de transmisión con análisis de contingencias

Contact Info

Product

Resources

About