An<scp>off‐line</scp>algorithm for<scp>fuse‐recloser</scp>coordination in distribution networks with photovoltaic resources

Dadkhah, Mohammad; Fani, Bahador; Heydarian‐Forushani, Ehsan; Mohtaj, Mahnaz

doi:10.1002/2050-7038.12500

Cited by 8 publications

(10 citation statements)

References 42 publications

(39 reference statements)

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“…The implementation of distributed generation (DG) causes a structural change in the distribution network, which no longer acts as a radial network, compromising the adequate coordination between protection devices [3,[5][6][7]. The impact level that DG can cause in the distribution network will depend on, among others, the generator size, type, and location in the network [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…One of the most frequently used protection devices is the fuse. To this device, the implementation of DG can cause a lack of coordination and untimely tripping [10], as the steady-state currents are subject to alterations which can even involve currents going through the fuse in reverse direction [7]. This means currents going through the fuse can be generated from locations both downstream and upstream of the fuse.…”

Section: Introductionmentioning

confidence: 99%

“…To the best of our knowledge and based on the available literature, it is necessary to propose a new reconfiguration of protection devices based on fuses coordination, as the main interest in the mentioned available literature seems to be focused on fuse-relay coordination [7,22,23]. This procedure should reduce the negative effects of DG in power networks (e.g., lack of coordination between protection relays and fuses), which imply that electrical protection schemes become not valid or, at least, less effective.…”

Section: Introductionmentioning

confidence: 99%

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Improving the Power Supply Performance in Rural Smart Grids with Photovoltaic DG by Optimizing Fuse Selection

et al. 2021

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The recent increase in the use of renewable sources in electrical systems has transformed the electrical distribution network with the subsequent implementation of the distributed generation (DG) concept. The high penetration level of photovoltaic units increases their injected fault current that may result in a lack of coordination of fuse reclosers in distribution networks. One of the main protection devices that is generally used in rural distribution networks is the fuse. A correct size selection is key for ensuring good operation and coordination with other protection devices. The DG implementation makes the selection above more difficult, as the current flow both in steady state and in case of short-circuit is subject to alterations. A new protection fuse selection method for distribution networks with implemented DG is proposed in this paper with the aim of ensuring an effective coordination between them, avoiding untimely behaviors. Different case studies have been analyzed (for diverse locations of DG in the network with various penetration levels which represent 25%, 50%, 75%, and 100% of the total installed load), using an IEEE 13-node test feeder. Besides, a new model to analyze fuse performance is proposed in this work. This model has proven to fit the manufacturer’s data well, with a maximum error of 2% within the normal trip current values.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improving the Power Supply Performance in Rural Smart Grids with Photovoltaic DG by Optimizing Fuse Selection

et al. 2021

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“…Another classification of protection coordination methods of active distribution systems is presented in Table 1. According to Table 1, both DG‐based and the protection system (PS)‐based strategies can be implemented in an offline 15,22‐24 or online 8,25‐30 manner. In the offline methods, the coordination of protection devices is ensured in sizing and siting of DGs in the planning stage 6,31‐33 or output of DGs in operation stage 8,34‐36 .…”

Section: Introductionmentioning

confidence: 99%

A novel adaptive protection coordination scheme for radial distribution networks in the presence of distributed generation

Bisheh

Fani

Shahgholian

2021

Int Trans Electr Energ Syst

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Summary Developing micro‐grids and increasing penetration of distributed generation (DG) bring significant techno‐economic benefits to power systems. However, the presence of DG can affect the performance of the protection system. In particular, the coordination of over‐current protection relays in the presence of DGs is a challenging task. In this article, an adaptive algorithm is proposed for protection coordination of over‐current relays. Once the coordination of relays is disturbed due to the presence of DG, the characteristic curve of the backup relay is adaptively modified based on the characteristic curve of the main relay in such a way that the coordination time interval (CTI) be in the acceptable range and therefore the coordination of relays is maintained. The proposed algorithm can maintain the coordination of over‐current relays locally only by controlling current parameter of backup relay and without imposing any restriction on the output power of DGs. Therefore, the proposed protection coordination scheme allows system operators and DG owners to exploit DG benefits without concerning about protection aspects related to the presence of DGs. The efficiency and applicability of the proposed method are validated using simulations on a typical industrial 20 kV radial distribution system. The simulation results show that the proposed algorithm can maintain the CTI of the main and backup relays in an acceptable range for various penetration levels of DGs.

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“…The low cost adaptation of existing protection systems in instances when DG is added to the network, ensuring a steady network operation, is an objective that should be achieved by any DSO 4 . Thus, to characterize cases such as lack of coordination, a reliability study was carried out on a test network.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of service quality of distribution systems with critically located generators

Abreu

Martins

2021

Int Trans Electr Energ Syst

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Summary One of the main goals of distributed generation (DG) is to ensure excellent quality of service, without affecting the existing protection system. This study addresses the quality of service in radial electricity networks with distributed generators and assesses the effect of additional distributed generators on the continuity of supply. It is based on a previous identification of the network locations of DG that lead to a loss of protection coordination in the occurrence of faults corresponding to critical cases. Such circumstances are scarcely analyzed in the literature. The proposed methodology is based on a 2‐fold approach and uses an analytical method and a Monte Carlo simulation to study the behavior of an IEEE test network. Two situations, one without and one with distributed generators, are compared and analyzed. The load power and generation capacity values of the distributed injections were assumed to be constant for the purpose of simplification. Studying the worst‐case scenario of the impact of DG on the quality of service of the network can help support the distribution network operator when making investment‐related decisions for the protection system. The obtained results demonstrate the impact of DG on the quality of service of the distribution network. Small capacity additions at locations that are not identified as critical may improve the quality of service. On the other hand, a worse performance is observed when generation additions corresponding to the critical cases cause a loss of coordination in the existing protection system.

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Anoff‐linealgorithm forfuse‐reclosercoordination in distribution networks with photovoltaic resources

Cited by 8 publications

References 42 publications

Improving the Power Supply Performance in Rural Smart Grids with Photovoltaic DG by Optimizing Fuse Selection

Improving the Power Supply Performance in Rural Smart Grids with Photovoltaic DG by Optimizing Fuse Selection

A novel adaptive protection coordination scheme for radial distribution networks in the presence of distributed generation

Evaluation of service quality of distribution systems with critically located generators

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