Electrical grid resilience framework with uncertainty
TL;DR: This paper presents a method to include uncertainty in the proposed resilience framework and demonstrates the framework on a 2000-bus synthetic grid with a transient contingency simulated as a hurricane type event with numerous line outages.
About: This article is published in Electric Power Systems Research.The article was published on 2020-12-01. It has received 14 citations till now. The article focuses on the topics: Resilience (network) & Electrical grid.
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TL;DR: Two novel terminologies named resilience risk factor and grid infrastructure density are propounded in this work, which will serve as vital parameters to determine grid resilience.
54 citations
TL;DR: This paper presents a two-stage stochastic planning model for transmission system and distributed energy resources (DERs) considering power system resiliency that takes into account both normal and emergency conditions as well as the duration of each condition.
Abstract: This paper presents a two-stage stochastic planning model for transmission systems and distributed energy resources (DERs) considering power system resiliency. The model takes into account both normal and emergency conditions as well as the duration of each condition. The proposed model is formulated as a mixed-integer linear program to minimize the total investment cost of transmission lines and DERs, expected values of generators’ operation cost in normal and emergency situations, and load shedding cost in emergency condition. The emergency scenarios are considered as moderate, severe, and complete damage states, which have different recovery times for transmission assets. The Benders decomposition technique is utilized to solve the optimization problem. Numerical results are demonstrated based on the IEEE 118-bus test system.
21 citations
TL;DR: In this paper , the challenges and opportunities towards both the evaluation and improvement of resilience of the power system are explicitly reviewed in this paper, and appropriate criteria with a comprehensive understanding of resiliency are emphasized.
Abstract: The power system is vital to energy security, emergency services, critical infrastructures, and the economy. Resilience of the power system against high-impact low-probability events is of particular importance to ensure the stability and reliability of the system planning and operation. The challenges and opportunities towards both the evaluation and improvement of resilience of the power system are explicitly reviewed in this paper. Appropriate criteria with a comprehensive understanding of resiliency are emphasized. In addition, to improve the modern power system resilience, this article considers the short and long-term plans with different categorizations, along with a detailed analysis of the corresponding challenges. Short-term plans refer to resilience-oriented scheduling, and long-term plans indicate fundamental corrections such as hardening and equipment upgrades. Practical methods are discussed in the paper to evaluate and improve the modern power system resilience. Furthermore, some common metrics for long-term and short-term resilience assessment are evaluated and compared. The investigations have shown that microgrids have a high potential to improve resilience of the power system by bringing energy sources closer to load centers, and reducing the grid dependence on transmission lines, which are the most vulnerable equipment against natural disasters.
19 citations
TL;DR: This work reviews the research work addressing the changing generation profile, state-of-the-art practices to address resilience, and research works at the intersection of these two topics in regards to electrical grids, and identifies areas of current and further study at this intersection.
Abstract: Fundamental shifts in the structure and generation profile of electrical grids are occurring amidst increased demand for resilience These two simultaneous trends create the need for new planning and operational practices for modern grids that account for the compounding uncertainties inherent in both resilience assessment and increasing contribution of variable inverter-based renewable energy sources This work reviews the research work addressing the changing generation profile, state-of-the-art practices to address resilience, and research works at the intersection of these two topics in regards to electrical grids The contribution of this work is to highlight the ongoing research in power system resilience and integration of variable inverter-based renewable energy sources in electrical grids, and to identify areas of current and further study at this intersection Areas of research identified at this intersection include cyber-physical analysis of solar, wind, and distributed energy resources, microgrids, network evolution and observability, substation automation and self-healing, and probabilistic planning and operation methods
18 citations
TL;DR: In this article, a double-loop optimization strategy is proposed to achieve the largest amount of power supply (LPS) available to the post-disaster network, where the interior point method serves the inner optimization loop and the outer optimization loop generates an optimal topology using a genetic algorithm.
18 citations
References
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TL;DR: A conceptual framework for addressing infrastructure interdependencies is presented that could serve as the basis for further understanding and scholarship in this important area and is used to explore the challenges and complexities of interdependency.
Abstract: The notion that our nation's critical infrastructures are highly interconnected and mutually dependent in complex ways, both physically and through a host of information and communications technologies (so-called "cyberbased systems"), is more than an abstract, theoretical concept. As shown by the 1998 failure of the Galaxy 4 telecommunications satellite, the prolonged power crisis in California, and many other recent infrastructure disruptions, what happens to one infrastructure can directly and indirectly affect other infrastructures, impact large geographic regions and send ripples throughout the national a global economy. This article presents a conceptual framework for addressing infrastructure interdependencies that could serve as the basis for further understanding and scholarship in this important area. We use this framework to explore the challenges and complexities of interdependency. We set the stage for this discussion by explicitly defining the terms infrastructure, infrastructure dependencies, and infrastructure interdependencies and introducing the fundamental concept of infrastructures as complex adaptive systems. We then focus on the interrelated factors and system conditions that collectively define the six dimensions. Finally, we discuss some of the research challenges involved in developing, applying, and validating modeling and simulation methodologies and tools for infrastructure interdependency analysis.
2,341 citations
"Electrical grid resilience framewor..." refers background in this paper
...This builds on the works in [24]–[27] and applies the framework to power...
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TL;DR: Generic metrics and formulae for quantifying system resilience are proposed that are generic enough to be implemented in a variety of applications as long as appropriate figures-of-merit and the necessary system parameters, system decomposition and component parameters are defined.
650 citations
TL;DR: In this paper, a multi-stage framework is proposed to analyze infrastructure resilience and a series of resilience-based improvement strategies are highlighted and appropriate correlates of resilience identified, to then be combined for establishing an expected annual resilience metric adequate for both single hazards and concurrent multiple hazards types.
604 citations
TL;DR: In this article, the resilience trapezoid is defined and quantified using time-dependent resilience metrics that are specifically introduced to help capture the critical system degradation and recovery features associated to the trapezoids for different temporal phases of an event.
Abstract: Resilience to high impact low probability events is becoming of growing concern, for instance to address the impacts of extreme weather on critical infrastructures worldwide. However, there is, as yet, no clear methodology or set of metrics to quantify resilience in the context of power systems and in terms of both operational and infrastructure integrity. In this paper, the resilience “trapezoid ” is therefore introduced which extends the resilience “triangle” that is traditionally used in existing studies, in order to consider the different phases that a power system may experience during an extreme event. The resilience trapezoid is then quantified using time-dependent resilience metrics that are specifically introduced to help capture the critical system degradation and recovery features associated to the trapezoid for different temporal phases of an event. Further, we introduce the concepts of operational resilience and infrastructure resilience to gain additional insights in the system response. Different structural and operational resilience enhancement strategies are then analyzed using the proposed assessment framework, considering single and multiple severe windstorm events that hit the 29-bus Great Britain transmission network test case. The results clearly highlight the capability of the proposed framework and metrics to quantify power system resilience and relevant enhancement strategies.
451 citations
"Electrical grid resilience framewor..." refers background or methods in this paper
...The resilience framework integrates the resilience trapezoid framework based in power systems applications from [23] and the resilience control system framework from [29]....
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...The classification of the resilience trapezoid, the three phases of an event, and the components that describe and quantify those phases are applied from [23]....
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...Perhaps the most accepted and well known metric for electrical grid resilience is the resilience trapezoid proposed in [23], which is pictured in Figure 1....
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09 May 2017
TL;DR: This paper provides an introduction to the fundamental concepts of power systems resilience and to the use of hardening and smart operational strategies to improve it, and introduces the resilience trapezoid as visual tool to reflect the behavior of a power system during a catastrophic event.
Abstract: Power systems have typically been designed to be reliable to expected, low-impact high-frequency outages. In contrast, extreme events, driven for instance by extreme weather and natural disasters, happen with low-probability, but can have a high impact. The need for power systems, possibly the most critical infrastructures in the world, to become resilient to such events is becoming compelling. However, there is still little clarity as to this relatively new concept. On these premises, this paper provides an introduction to the fundamental concepts of power systems resilience and to the use of hardening and smart operational strategies to improve it. More specifically, first the resilience trapezoid is introduced as visual tool to reflect the behavior of a power system during a catastrophic event. Building on this, the key resilience features that a power system should boast are then defined, along with a discussion on different possible hardening and smart, operational resilience enhancement strategies. Further, the so-called $\Phi \Lambda {E}\Pi $ resilience assessment framework is presented, which includes a set of resilience metrics capable of modeling and quantifying the resilience performance of a power system subject to catastrophic events. A case study application with a 29-bus test version of the Great Britain transmission network is carried out to investigate the impacts of extreme windstorms. The effects of different hardening and smart resilience enhancement strategies are also explored, thus demonstrating the practicality of the different concepts presented.
309 citations
"Electrical grid resilience framewor..." refers background or methods in this paper
...Building from [18], the area is used to compare improvements while accounting for the resilience threshold....
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...The quantification of resilience in power systems is an emerging field, with several proposed resilience metrics, such as the resilience triangle and trapezoid [17], [18]....
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...This resilience framework incorporates the controls systems resilience framework presented in [29] and the resilience trapezoid presented in [18]....
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...Further use of the resilience trapezoid is performed in [18], to show how the impact of improvements made in specific resilience phases affect the overall resilience on the system....
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