Dynamic equivalent‐based reliability evaluation of distribution systems with DGs

Wang, Huaizhi; Lin, Haofan; Yu, Tao; Xu, Zhao; Mishra, Yateendra

doi:10.1049/iet-gtd.2015.0669

Cited by 11 publications

(5 citation statements)

References 39 publications

(53 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various new reliability indices that can be used to islanding operation have been proposed. In [15], the restored customer index (RCI) to reflect the restoration of electricity customers using distributed generations (DG) in islanding operation was proposed. However, RCI covers the customer' perspective only.…”

Section: B Literature Review On Reliability Indicesmentioning

confidence: 99%

See 1 more Smart Citation

An Assessment Procedure of Distribution Network Reliability Considering Photovoltaic Power Integration

He³

et al. 2019

IEEE Access

View full text Add to dashboard Cite

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.

show abstract

Section: B Literature Review On Reliability Indicesmentioning

confidence: 99%

“…Thus, five reliability indices are newly added (see Table 2). The formulas for the computation of the new reliability indices are shown in equations (11)- (15). GRDG, PIPDG and PFDG aim to reflect the characteristics of PV output.…”

Section: A Refinement Of Reliability Indicesmentioning

confidence: 99%

An Assessment Procedure of Distribution Network Reliability Considering Photovoltaic Power Integration

He³

et al. 2019

IEEE Access

View full text Add to dashboard Cite

show abstract

“…The correlation of ASAI between large-scale network and subnetworks is described by Equation (28), which is deduced by Equations (25) to (27) ASAI ¼…”

Section: Theoremmentioning

confidence: 99%

“…In practice, one may not obtain a satisfactory result directly from the database in the presence of a nonstandard distribution network. To tackle such difficult issue, a network‐equivalent technique needs to be employed before it is capable of calculating reliability indices by TSA.…”

Section: Tsa For Speedy Reliability Assessmentmentioning

confidence: 99%

A study of reliability assessment and topology similarity: Methodology, relationship, and applications

Tang

et al. 2019

Int Trans Electr Energ Syst

Self Cite

View full text Add to dashboard Cite

Summary This paper attempts to investigate the relationship between topology and reliability of a distribution network associated with a singular value sequence (SVS) to accurately represent the crucial features of the distribution network topology, in which a novel algorithm called topology similarity analysis (TSA) is proposed for the first time and adopted to calculate the reliability indices of the distribution networks. Under such framework, SVS is treated as a similarity index that constructs a standard database of distribution network topology. Moreover, TSA outperforms other typical algorithms used in distribution network reliability assessment with a lower calculation costs and higher efficiency. Two case studies, eg, standard IEEE 33‐bus system and large‐scale practical 148‐bus system, are carried out at first to evaluate the effectiveness of the proposed approach. Then, TSA incorporated with splitting method is applied in the 148‐bus case. Simulation results demonstrate that TSA is 2 to 2000 times faster than that of other typical algorithms. Besides, the overall calculation time of TSA just grows insignificantly as the scale of the distribution network increases, together with a guaranteed less than 0.005% precision error.

show abstract

“…In addition, the performance of protective devices can be represented as operation probability and (replacing) time. Therefore, all the basic elements in the distribution system can be summarized as a general data structure [21], as follows, e = {i, j, a, λ, p, t}…”

Section: General Data Structure For Basic Elementsmentioning

confidence: 99%

Recursive Method for Distribution System Reliability Evaluation

Wang

Zhang

Li³

et al. 2018

Energies

Self Cite

View full text Add to dashboard Cite

This paper proposes a novel hybrid recursive method for distribution system reliability evaluation to deal with the computational limit and low-efficiency problem which exist in previously developed techniques as the system becomes larger. This method includes a bottom-up process and a top-down process, which are developed on the basis of a recursive principle, and the synthesis of both processes yield the reliability performance of each bus of the system. The bottom-up process considers the effects of downstream failures on upstream customers, and the top-down process considers the effects of upstream failures on downstream customers. In addition, a novel switch zone concept is defined and introduced into the bottom-up recursive process to save the computation cost. Besides, section technique (ST) and shortest path method (SPM) are employed to effectively simplify the recursive path and thus, the computation efficiency can be improved. The most significant feature of the proposed method over ST, SPM, failure mode and effect analysis (FMEA) is that it provides a more generalized equivalent approach to maximally simplify the network for reliable evaluation irrespective of the network topology. The effectiveness of the proposed method has been validated through comprehensive tests on Roy Billinton test system (RBTS) bus 6 and a practical-sized distribution system in China.

show abstract

Dynamic equivalent‐based reliability evaluation of distribution systems with DGs

Cited by 11 publications

References 39 publications

An Assessment Procedure of Distribution Network Reliability Considering Photovoltaic Power Integration

An Assessment Procedure of Distribution Network Reliability Considering Photovoltaic Power Integration

A study of reliability assessment and topology similarity: Methodology, relationship, and applications

Recursive Method for Distribution System Reliability Evaluation

Contact Info

Product

Resources

About