Battery and backup generator sizing for a resilient microgrid under stochastic extreme events

Dong, Jianming; Zhu, Lin; Su, Yu; Ma, Yiwei; Li, Fangxing; Wang, Fred; Tolbert, Leon M.; Glass, Jim; Bruce, Lilian

doi:10.1049/iet-gtd.2018.5883

Cited by 51 publications

(33 citation statements)

References 40 publications

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“…Some kinds of these strategies try to physically enhance the network such as pole hardening [10,11] and strengthening the substations with anchored components [12] to decrease the damaged probability of components against natural disasters. Another strategy toward this type is to place distributed means of generation or energy storage devices in the PDN [13][14][15].…”

Section: Resilience Study Of Pdnmentioning

confidence: 99%

Enhancing Integrated Power and Water Distribution Networks Seismic Resilience Leveraging Microgrids

2020

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An earthquake, as one of the natural disasters, can damage vital infrastructures including the power distribution network (PDN) and water distribution network (WDN). The dependency of WDN on PDN is the other challenge that can be highlighted after the earthquake. In this paper, the resilience improvement planning of integrated PDN and WDN against earthquakes is solved through stochastic programming. Power lines and substation hardening in PDN and water pipes rehabilitation with better material are the candidate strategies to minimize the expected inaccessibility value of loads to power and water as the resilience index and to minimize the cost of strategies. The proposed model is tested on the modified IEEE 33-bus PDN with a designed WDN and its performance is evaluated under different cases where the impacts of using distributed generations (DG) in PDN, equipping the water pumps to back-up generators, and the value of loads accessibility to water on the system resilience are investigated.

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Section: Resilience Study Of Pdnmentioning

confidence: 99%

Enhancing Integrated Power and Water Distribution Networks Seismic Resilience Leveraging Microgrids

2020

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“…[10][11][12][13] The other are the methods and measures to enhance the resilience of power systems, mainly focusing on the three stages of the function curve, which include the prevention, defence, and restoration. 2,5,[14][15][16][17][18][19][20][21] The enhancing measures include grid hardening, resource allocations, and network reconfiguration, which are conducive to enhance the resilience of power systems. Grid hardening is considered to be one of the most effective approaches that can increase the resilience of power grids.…”

Section: Literature Reviewmentioning

confidence: 99%

A novel planning‐attack‐reconfiguration method for enhancing resilience of distribution systems considering the whole process of resiliency

Wang

et al. 2019

Int Trans Electr Energ Syst

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Summary To enhance the resilience of distribution systems and fight against extreme disasters, a novel planning‐attack‐reconfiguration optimization method is proposed in this paper. Firstly, according to the processes of prevention, defence, and restoration for a resilient distribution system through disruption, the novel resilience evaluation indicators are presented, which include the node degree of distributed generation (DG) bus, survival rate, and recovery ability. Secondly, a novel planning‐attack‐reconfiguration optimization model is developed to improve the resilience of distribution systems. In DG planning stage, the multi‐objective planning model is formulated, which includes the minimization of the total cost of investment and operation, and the maximization of the node degree of DG buses for critical loads. In the attack stage, a clear worst case of N‐k contingencies on the basis of generalized nodes is presented to reduce the computational complexity. Then, the post‐disaster network reconfiguration model is formulated to maximize the restoration rate of critical loads (RRCL). Finally, the proposed method is illustrated by the case study on PG&E 69‐bus distribution system. The simulation results indicate that all the RRCL can reach about 90% in the four multipoint fault scenarios. Meanwhile, other evaluation indicators are greatly improved. It is shown that the resilience of distribution systems can be dramatically enhanced by the proposed method.

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“…The proposed method is applied to the Washington State University campus, as a case study, to restore the hospital and city hall electricity during the blackout. In [23], the authors studied the optimal BES and backup generator sizing problem which considered the stochastic event occurrence duration on the grid-tied MG under off-grid operation. Authors in [17] utilized a methodology to quantify the resilience PV/BES benefits.…”

Section: Introductionmentioning

confidence: 99%

“…There have been a few types of research that are focused on the economic evaluation of resilient electrical systems. In addition, the concept of comparing modern and traditional energy systems for achieving the same resilience targets has not been approached in previous studies [15,21,23]. In contrast to [21], this paper tries to enhance the resiliency of demand-side loads rather than grid or feeder loads.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study between Traditional Backup Generator Systems and Renewable Energy Based Microgrids for Power Resilience Enhancement of a Local Clinic

et al. 2019

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Extreme weather events lead to electrical network failures, damages, and long-lasting blackouts. Therefore, enhancement of the resiliency of electrical systems during emergency situations is essential. By using the concept of standby redundancy, this paper proposes two different energy systems for increasing load resiliency during a random blackout. The main contribution of this paper is the techno-economic and environmental comparison of two different resilient energy systems. The first energy system utilizes a typical traditional generator (TG) as a standby component for providing electricity during the blackouts and the second energy system is a grid-connected microgrid consisting of photovoltaic (PV) and battery energy storage (BES) as a standby component. Sensitivity analyses are conducted to investigate the survivability of both energy systems during the blackouts. The objective function minimizes total net present cost (NPC) and cost of energy (COE) by considering the defined constraints of the system for increasing the resiliency. Simulations are performed by HOMER, and results show that for having almost the same resilience enhancement in both systems, the second system, which is a grid-connected microgrid, indicates lower NPC and COE compared to the first system. More comparison details are shown in this paper to highlight the effectiveness and weakness of each resilient energy system.

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Battery and backup generator sizing for a resilient microgrid under stochastic extreme events

Cited by 51 publications

References 40 publications

Enhancing Integrated Power and Water Distribution Networks Seismic Resilience Leveraging Microgrids

Enhancing Integrated Power and Water Distribution Networks Seismic Resilience Leveraging Microgrids

A novel planning‐attack‐reconfiguration method for enhancing resilience of distribution systems considering the whole process of resiliency

A Comparative Study between Traditional Backup Generator Systems and Renewable Energy Based Microgrids for Power Resilience Enhancement of a Local Clinic

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