Networked Microgrids for Enhancing the Power System Resilience
09 May 2017-Vol. 105, Iss: 7, pp 1289-1310
TL;DR: It is concluded that networked microgrids in particular provide a universal solution for improving the resilience against extreme events in Smart Cities.
Abstract: This paper focuses on the role of networked microgrids as distributed systems for enhancing the power system resilience against extreme events. Resilience is an intrinsically complex property which requires deep understanding of microgrid operation in order to respond effectively in emergency conditions. The paper first introduces the definition and offers a generic framework for analyzing the power system resilience. The notion that large power systems can achieve a higher level of resilience through the deployment of networked microgrids is discussed in detail. In particular, the management of networked microgrids for riding through extreme events is analyzed. In addition, the merits of advanced information and communication technologies (ICTs) in microgrid-based distributed systems that can support the power system resilience are presented. The paper also points out the challenges for expanding the role of distributed systems and concludes that networked microgrids in particular provide a universal solution for improving the resilience against extreme events in Smart Cities.
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TL;DR: The strategies utilized by microgrids for enhancing their resilience during major outage events are analyzed, which include proactive scheduling, outage management, feasible islanding, and advanced operation strategies for reducing the impact of major disruptions.
286 citations
TL;DR: This paper proposes a new optimal scheduling mode for minimizing the operating costs of an isolated microgrid (MG) by using chance-constrained programming and significantly exceeds the commonly used hybrid intelligent algorithm with much better and more stable optimization results and significantly reduced calculation times.
Abstract: By modeling the uncertainty of spinning reserves provided by energy storage with probabilistic constraints, a new optimal scheduling mode is proposed for minimizing the operating costs of an isolated microgrid (MG) by using chance-constrained programming. The model is transformed into a readily solvable mixed integer linear programming (MILP) formulation in GAMS via a proposed discretized step transformation (DST) approach and finally solved by applying the CPLEX solver. By properly setting the confidence levels of the spinning reserve probability constraints, the MG operation can be achieved a trade-off between reliability and economy. The test results on the modified ORNL DECC lab MG test system reveal that the proposal significantly exceeds the commonly used hybrid intelligent algorithm with much better and more stable optimization results and significantly reduced calculation times.
197 citations
Cites background from "Networked Microgrids for Enhancing ..."
...l in fact result in an unnecessarily elevated reserve cost if accounting all the uncertainties such as power fluctuations of renewable DGs, load fluctuations and unexpected unit failures ()or outages [3]. B. Contribution of This Paper To address the above concerns, a CCP-based scheduling model and its solution approach are proposed for isolated MGs. The main contributions are as follows: The propos...
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...lated rural villages that are inaccessible to the main power grid and providing critical community services during extreme weather-related incidents involving thunderstorms, hurricanes, and blizzards [3]. By this means, it paves the way for integrating various distributed energy resources (DERs), especially wind turbine (WT), photovoltaic (PV) and microturbine (MT) generators. Therefore, MGs have no ...
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TL;DR: In this article, the main components and roles of renewable energy resources (such as solar, wind, geothermal, hydropower, ocean, and biofuels) for the smart city were fully introduced.
193 citations
TL;DR: This paper aims to describe and classify different high-impact rare (HR) events, provide a more technical definition of power system resilience, and discuss linkages between resilience and other well-established concepts, such as security and reliability.
Abstract: This paper analyzes the notion of resilience in power systems from a fundamental viewpoint and thoroughly examines its practical implications. This paper aims to describe and classify different high-impact rare (HR) events, provide a more technical definition of power system resilience, and discuss linkages between resilience and other well-established concepts, such as security and reliability. Most relevant decisions of system operators in the face of HR events involve a significant level of stress and strain. In order to make informed decisions within this context, it is crucial to have an all-inclusive picture of the state of the system. This paper provides an appropriate framework that not only characterizes the various states of the system but also derives informed decisions from a resilience-oriented perspective. It also describes and analyzes diverse resilience improvement strategies. Comprehensive models and classifications are provided to clearly capture various aspects of power system resilience.
190 citations
Cites background from "Networked Microgrids for Enhancing ..."
...Employing normalized metrics provides a comparable means for assessing the resilience in various operating conditions and power systems [52]....
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TL;DR: A hybrid algorithm is put forward by combining a real/integer-coded JAYA algorithm and the branch and bound algorithm (BBA) to address the upper- and lower- level sub-problems, and the bi-level model is eventually solved through alternate iterations between the two levels.
181 citations
Cites background from "Networked Microgrids for Enhancing ..."
...Compared with the grid-connected mode, an isolated MG (IMG) plays a unique role in guaranteeing the uninterruptible power supply of critical loads during extreme weather-related incidents such as thunderstorms, hurricanes, and blizzards [7]....
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TL;DR: The hierarchical control derived from ISA-95 and electrical dispatching standards to endow smartness and flexibility to MGs is presented and results are provided to show the feasibility of the proposed approach.
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2,358 citations
TL;DR: In this article, the feasibility of control strategies to be adopted for the operation of a microgrid when it becomes isolated is evaluated and the need of storage devices and load shedding strategies is evaluated.
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