Classification of component switching transients in the viewpoint of protective relays

Wang, F; Bollen, M.H.J.

doi:10.1016/s0378-7796(02)00170-0

Cited by 14 publications

(9 citation statements)

References 8 publications

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“…Such assessment includes a comparative analyzes for ranking according to predefined merit factors. The analysis may focus on algorithm comparison between protections from different vendors, by analyzing possible relay mal-functions (fail to trip or mal-trip) under special system conditions [5,6], or on the protection scheme reliability, by including component failure and consequences [7][8][9]. The present paper addresses the latest.…”

Section: Introductionmentioning

confidence: 99%

Transmission line protection systems with aided communication channels—Part II: Comparative performance analysis

Santos

Barros

Correia

2015

Electric Power Systems Research

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Section: Introductionmentioning

confidence: 99%

Transmission line protection systems with aided communication channels—Part II: Comparative performance analysis

Santos

Barros

Correia

2015

Electric Power Systems Research

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“…Following the time-current graded coordination scheme, the lowered backup TCC never intersects the raised main TCCs (referring to (6) and Figure 4, DT is already considered in raising the original main TCCs). However, with reference to Figure 2, it is common that several OCPDs (OCRs 2 and 3 and Fuses 1 and 2 in Figure 2) are placed after one OCR (OCR1 in Figure 2) in distribution systems.…”

Section: Time-current Gradingmentioning

confidence: 99%

“…The maximum load and fault currents are given in Table 10. Since OCRs 1, 3,4,6,8,9,11,13, and Fuse 1 are inside the load facilities, they are set based on the internal electrical systems of the consumers. Since OCRs 1, 3,4,6,8,9,11,13, and Fuse 1 are inside the load facilities, they are set based on the internal electrical systems of the consumers.…”

Section: Test Casementioning

confidence: 99%

Optimal time‐current graded coordination of multistage inverse‐time overcurrent relays in distribution networks

Hamidi

Ahmadian

Patil

et al. 2019

Int Trans Electr Energ Syst

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Summary This paper proposes a method for optimal coordination of multistage overcurrent relays (OCRs) in radial distribution networks, including industrial, rural, and urban grids. The proposed method optimally coordinates multistage time‐current curves (TCCs) using the genetic algorithm (GA). The proposed method is able to determine the proper TCC type (eg, moderately inverse, very inverse, and extremely inverse), pickup current, and time‐setting multiplier (TSM) for each stage of TCCs. The proposed method utilizes the dynamic models of OCRs and fuses. This safeguards the relays against the maloperations resulting from the DC decaying part of fault currents and transient overcurrents caused by transformer energization or motor starting. The proposed method is evaluated using DIgSILENT Power Factory for power system analysis and Matlab for implementation of the proposed method. According to the simulation outcomes, the advantages and disadvantages of the proposed method are discussed and compared with the existing methods.

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“…In both cases, (1) and (2), the protection function is still available and can operate when needed. Therefore, the protection dependability is not affected by the information of the disconnect switch position.…”

Section: Busbar Protection Elementsmentioning

confidence: 99%

“…The first focuses on algorithm comparison between protections from different manufacturers. In this case, possible relay mal-functions (fail to trip or mal-trip) are studied under special system conditions [2] [3]. The second focuses on the protection system reliability, including component failure and the corresponding consequences [4] [5].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Busbar Protection Architectures

Santos

Barros

2016

IEEE Trans. Power Delivery

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The performance of three commonly used busbar protection architectures (centralized, decentralized and redundant) is compared, taking into account the reliability indices (failure rate and Mean Time to Repair) of their components. The protection system performance is analyzed, considering that the probability of successful fault clearance is given by the system availability. The different architectures were applied to a double busbar with bus coupler substation. The busbar protection architectures are described by reliability graphs, and the availabilities are computed by Monte Carlo simulation. Key performance indicators are introduced and the influence of the substation size on the protection system performance is analyzed. A comparative study is carried out, allowing to quantify the benefits of the different design options.Index Terms -Availability, power system protection, redundancy, reliability. I.0885-8977 (c)

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Classification of component switching transients in the viewpoint of protective relays

Cited by 14 publications

References 8 publications

Transmission line protection systems with aided communication channels—Part II: Comparative performance analysis

Transmission line protection systems with aided communication channels—Part II: Comparative performance analysis

Optimal time‐current graded coordination of multistage inverse‐time overcurrent relays in distribution networks

Comparative Analysis of Busbar Protection Architectures

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