Fuzzy adaptive setting for time-current-voltage based overcurrent relays in distribution systems

Momesso, Antonio E. C.; Bernardes, Wellington Maycon Santos; Asada, Eduardo N.

doi:10.1016/j.ijepes.2018.12.035

Cited by 53 publications

(16 citation statements)

References 25 publications

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“…Furthermore, the offline coordination of protection system can only consider a limited number of distribution system states. On the other hand, online protection coordination can be realized by adaptive protection setting, 26,37,38 group setting, 39‐41 telecommunication between protection devices, 26,42 and using multi‐agent‐based 13,28,43‐45 coordination methods. In some online methods, 46‐50 the optimal setting of protection devices can be determined for each change in the topology of the network or DG output.…”

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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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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“…To that end, numerous MG protection schemes based on computational intelligence and machine learning approaches, such as fuzzy systems, multi-agent systems, artificial neural networks, and metaheuristics, have been proposed [9]. Fuzzy systems have been adopted in [10,11] to implement adaptive protection schemes, which alter the relay set-points in response to variations in the MG operation mode and the network topology. A multi-agent protection scheme has been proposed in [12], in which several agents including a measurement agent, breaker agent, optimal coordination agent, and protection agent cooperate to realize an adaptive protection scheme.…”

Section: Introductionmentioning

confidence: 99%

“…This dataset is commonly generated by running a large number of simulations with various fault scenarios. The existing machine learningbased protection schemes [9][10][11][12][13][14][15][16][17][18] are mostly focused on detection of faults with a small fault impedance. That is to say, they only consider scenarios in which the fault impedance is small during the training stage and validate their algorithms by the same small fault impedances.…”

Section: Introductionmentioning

confidence: 99%

Support Vector Machine Based Fault Location Identification in Microgrids Using Interharmonic Injection

et al. 2021

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This paper proposes an algorithm for detection and identification of the location of short circuit faults in islanded AC microgrids (MGs) with meshed topology. Considering the low level of fault current and dependency of the current angle on the control strategies, the legacy overcurrent protection schemes are not effective in in islanded MGs. To overcome this issue, the proposed algorithm detects faults based on the rms voltages of the distributed energy resources (DERs) by means of support vector machine classifiers. Upon detection of a fault, the DER which is electrically closest to the fault injects three interharmonic currents. The faulty zone is identified by comparing the magnitude of the interharmonic currents flowing through each zone. Then, the second DER connected to the faulty zone injects distinctive interharmonic currents and the resulting interharmonic voltages are measured at the terminal of each of these DERs. Using the interharmonic voltages as its features, a multi-class support vector machine identifies the fault location within the faulty zone. Simulations are conducted on a test MG to obtain a dataset comprising scenarios with different fault locations, varying fault impedances, and changing loads. The test results show that the proposed algorithm reliably detects the faults and the precision of fault location identification is above 90%.

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“…Taking current and voltage as an input to the fuzzy inference system, an algorithm has been developed for fast intelligent relaying which has been presented earlier [9]. Momesso et al [10] have distinguished between a fuzzy based system and non fuzzy based system with respect to time and current graded protective relaying operating time. Many different approaches have been followed to develop a new kind of intelligent relaying [5] [6].…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Based Algorithm for Stage-I of Cascaded Intelligent Relaying

Samonto¹,

Kar²,

Pal³

et al. 2021

IJIS

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Fuzzy adaptive setting for time-current-voltage based overcurrent relays in distribution systems

Cited by 53 publications

References 25 publications

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

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

Support Vector Machine Based Fault Location Identification in Microgrids Using Interharmonic Injection

Fuzzy Based Algorithm for Stage-I of Cascaded Intelligent Relaying

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