Reliability evaluation of islanded microgrids with stochastic distributed generation

Kennedy, Scott

doi:10.1109/pes.2009.5275731

Cited by 32 publications

(20 citation statements)

References 14 publications

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“…Focusing on the new distribution systems, recently proposed reliability evaluation methods also have potential limitations. In the scientific literature, a combined generation to load ratio model is proposed to evaluate the local generation adequacy for an islanded microgrid with limited stochastic resources in [10]. In reference [11], a simulation methodology is presented for reliability and cost assessment of renewable energy sources in an independent microgrid system.…”

Section: Introductionmentioning

confidence: 99%

A Layered Fault Tree Model for Reliability Evaluation of Smart Grids

Song

Chen

2014

Energies

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Abstract:The smart grid concept has emerged as a result of the requirement for renewable energy resources and application of new techniques. It is proposed as a practical future form of power distribution system. Evaluating the reliability of smart grids is of great importance and significance. Focusing on the perspective of the consumers, this paper proposes a layered fault tree model to distinguish and separate two different smart grid power supply modes. Revised importance measures for the components in the fault tree are presented considering load priority, aiming to find the weak parts of the system and to improve the design and using. A corresponding hierarchical Monte Carlo simulation procedure for reliability evaluation is proposed based on the layered fault tree model. The method proposed in this paper is tested on a case of reliability assessment for the Future Renewable Electric Energy Delivery and Management (FREEDM) system. The proposed technique can be applicable to other forms of smart grids.

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Section: Introductionmentioning

confidence: 99%

A Layered Fault Tree Model for Reliability Evaluation of Smart Grids

Song

Chen

2014

Energies

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“…3) the success isolated operation when the external power failure, , but the distributed power failure (as a second-order faults considered [4,5] ).…”

Section: Microgrid Reliability Index With Minimal Pathmentioning

confidence: 99%

Reliability evaluation of Microgrid with PV-WG hybrid system

Huang

Fengli

et al. 2011

2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT)

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This paper presents a research method of reliability of Microgrid. Firstly, according to different features between the traditional power sources and distributed power supply, the models of power generation reliability evaluation including wind power and solar power are established. Secondly, on the basis of the different operation modes and the importance of the loads, the reliability evaluation index of the sensitive load and nonsensitive load in Microgrid are identified in the condition of their component failure, the external power failure, the micro-source fault as well as in case of lack of micro-source and so on when the Microgrid connected to the great power network or running isolated. Finally, a case of a typical Microgrid system is exhibited. The effectiveness and feasibility of the transactions and optimization model are also overall demonstrated by this simulation.

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“…The potential benefit of microgrids in grid reliability improvement is an important advantage as pointed out in [1,2]. However, it is not always true that the reliability of power supply to all customers can be improved.…”

Section: Introductionmentioning

confidence: 99%

Reliability Evaluation of a Microgrid Considering Its Operating Condition

Xu¹,

Mitra²,

Wang³

et al. 2016

Journal of Electrical Engineering and Technology

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-Microgrids offer several reliability benefits, such as the improvement of load-point reliability and the opportunity for reliability-differentiated services. The primary goal of this work is to investigate the impacts of operating condition on the reliability index for microgrid system. It relies on a component failure rate model which quantifies the relationship between component failure rate and state variables. Some parameters involved are characterized by subjective uncertainty. Thus, fuzzy numbers are introduced to represent such parameters, and an optimization model based on Fuzzy Chance Constrained Programming (FCCP) is established for reliability index calculation. In addition, we present a hybrid algorithm which combines scenario enumeration and fuzzy simulation as a solution tool. The simulations in a microgrid test system show that reliability indices without considering operating condition can often prove to be optimistic. We also investigate two groups of situations, which include the different penetration levels of microsource and different confidence levels. The results support the necessity of considering operating condition for achieving accurate reliability evaluation.

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Reliability evaluation of islanded microgrids with stochastic distributed generation

Cited by 32 publications

References 14 publications

A Layered Fault Tree Model for Reliability Evaluation of Smart Grids

A Layered Fault Tree Model for Reliability Evaluation of Smart Grids

Reliability evaluation of Microgrid with PV-WG hybrid system

Reliability Evaluation of a Microgrid Considering Its Operating Condition

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