Network Analysis and Algorithm of Microgrid Reliability Assessment

Luo, Yi; Zhu, Gelan; Wang, Gang

doi:10.1109/appeec.2010.5448798

Cited by 13 publications

(4 citation statements)

References 9 publications

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“…Therefore, based on the screening index of principal component analysis, this paper proposes a comprehensive evaluation method of grid-connected microgrid based on the combination of entropy weight method and PROMETHEE [3], that is, the index weight is determined by entropy weight method, and the final ranking calculation of the scheme is carried out by PROMETHEE. [4]…”

Section: Grid-connected Microgrid Project Evaluation Modelmentioning

confidence: 99%

Research on investment evaluation model for microgrid projects based on PCA-PROMETHEE method

Shi,

Gao,

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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Grid-connected microgrid is an effective solution for large-scale distributed renewable been considered as an indispensable part of the future energy Internet. At present, the operation and control technology of grid-connected microgrid has been basically mature, but its economy and final implementation effect have no example reference, which restricts the promotion of grid-connected microgrid projects. This requires a comprehensive evaluation of the grid-connected microgrid project to explain the investment and operation benefits of the microgrid project. In this paper, the comprehensive evaluation of grid-connected microgrid project is studied, and a set of scientific and reasonable comprehensive evaluation index system of grid-connected microgrid project is constructed. Then, the principal component analysis method is used to screen the important evaluation indexes, and the entropy weight method is used to objectively empower the evaluation indexes. Finally, the PROMETHEE method is used to evaluate and sort the microgrid project scheme. The research results show that the grid-connected microgrid can balance the negative effects of intermittent power supply and energy storage facilities in the system, and provide theoretical basis and basis for the promotion of microgrid engineering.

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Section: Grid-connected Microgrid Project Evaluation Modelmentioning

confidence: 99%

Research on investment evaluation model for microgrid projects based on PCA-PROMETHEE method

Shi,

Gao,

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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show abstract

“…In [41], the fault tree method was proposed to establish the reliability model during islanding in the micro-grid, which helped to clarify the relationship between fault events and component failures. It was illustrated in [42] that the rational network structure is necessary to improve the reliability, and the fault adjacency matrix was derived in [43], which contributes more proper micro-grid structure.…”

Section: Literature Review On Reliability Of Islanding Operationmentioning

confidence: 99%

“…Although valuable outcomes are presented in [6], [36]- [43], the power supply areas of islanding operation in [6], [36]- [43] were nearly fixed and were not dynamically changed according to the time-varying characteristics of loads and the renewable energy output. It should be noted that overgeneration can happen in the fixed power supply area of islanding operation, which means that the PV output may not be fully utilized to improve the distribution network reliability.…”

Section: Literature Review On Reliability Of Islanding Operationmentioning

confidence: 99%

An Assessment Procedure of Distribution Network Reliability Considering Photovoltaic Power Integration

He³

et al. 2019

IEEE Access

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As photovoltaic (PV) generation has been one of the major renewable energy sources around the world, its PV capacity has also increased. When the large-scale PV systems are integrated into the distribution network, the complexity of the assessment process of the distribution network reliability will increase hazardously. In order to accurately assess this reliability in the distribution network combined with the PV generation, a reliability assessment procedure is proposed. In order to accurately evaluate the impact of the failure of conventional power equipment on reliability, the time-varying failure rate of conventional power equipment is modeled, taking into account the aging period. Then, in order to accurately evaluate the reliability improvement with PV systems integration, the new procedure is proposed highlighting the following contributions: 1) five new indices are added. 2) PV output is modeled so that not only the radiation intensity but also the failure and degradation of PV modules are represented. 3) time-varying islanding operation is considered and integrated. A case study using real-life distribution network topology and data in China is applied to verify that the newly proposed reliability indices display more sensitivity, and the proposed procedure significantly improves the accuracy of the reliability assessment.

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“…There are significant differences between microgrid and distribution system in structure [4]. Thus, four special indices were introduced in [5] and another two were proposed in [6].…”

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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Network Analysis and Algorithm of Microgrid Reliability Assessment

Cited by 13 publications

References 9 publications

Research on investment evaluation model for microgrid projects based on PCA-PROMETHEE method

Research on investment evaluation model for microgrid projects based on PCA-PROMETHEE method

An Assessment Procedure of Distribution Network Reliability Considering Photovoltaic Power Integration

Reliability Evaluation of a Microgrid Considering Its Operating Condition

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