Hybrid Islanding Detection in Microgrid With Multiple Connection Points to Smart Grids Using Fuzzy-Neural Network

Kermany, Saman Darvish; Joorabian, Mahmood; Deilami, Sara; Masoum, Mohammad A. S.

doi:10.1109/tpwrs.2016.2617344

Cited by 103 publications

(62 citation statements)

References 20 publications

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“…Similarly, wavelet based ANFIS is also used in active ID technique through d axis signal injection for a UL 1741 test configuration [116]. A hybrid islanding technique using ANFIS is implemented in [117] based on probability of islanding (PoI) values on Smart grid side. Table 4 shows the comparison between various classifier IDMs.…”

Section: Anfismentioning

confidence: 99%

Shifting of research trends in islanding detection method - a comprehensive survey

Dutta

Sadhu

Reddy

et al. 2018

Prot Control Mod Power Syst

113

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The augmentation in electricity demand, power system privatization as well as efficacy of renewable resources has paved the way for power system companies and researchers to exploit the field of grid connected distributed generation (DG) and its issues, islanding being a dominant one. Several research works have been conducted to mitigate the issues of islanding detection (ID). In context of this, the paper gives a comprehensive review of islanding issues, standard test systems, criteria and shifting of research trends in islanding detection methods (IDMs). The significant contributions pertain to categorization of IDMs, evaluation of non-detection zone (NDZ) for each test system, disquisition on evolution and advancement of IDMs and its comparisons based on criteria such as NDZ, run on time, nuisance tripping percentage, applicability in multi DG system and implementation cost to draw out the strength and shortcomings of individual methods that will come to aid to the companies or researchers for establishing the applicability and appropriateness of such method for their concerned domain.

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Section: Anfismentioning

confidence: 99%

Shifting of research trends in islanding detection method - a comprehensive survey

Dutta

Sadhu

Reddy

et al. 2018

Prot Control Mod Power Syst

113

View full text Add to dashboard Cite

show abstract

“…The second system with multiple DGs consists of battery storage as DG and some parts including wind, a diesel generator, and local loads with a CB for studying various situations as observed in Figure 19. 26 In this test system, MG under consideration has two subsystems with one connection point to utility grid, and there are various loads such as main load and variable load. When an islanding occurs, the MG configuration is planned in such manner that the current and voltage will not be modified notably due to the presence of sub-MG supplying the local loads.…”

Section: System With Multiple Dgsmentioning

confidence: 99%

“…In addition, the proposed hybrid method is considered for a system with three DGs under the grid-connected and disconnected operational conditions according to UL1741Std. 2,[26][27][28] Different schemes of the active and reactive power under UL1547 are tested. The load parameters are shown in Table 2, and the related simulation results are depicted in Figure 22.…”

Section: System With Multiple Dgsmentioning

confidence: 99%

A hybrid islanding detection technique for inverter‐based distributed generator units

Seyedi

Taher

Ganji

et al. 2019

Int Trans Electr Energ Syst

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Summary Due to high importance of islanding detection as an essential protection requirement, especially for the distributed generation (DG), a new approach to islanding detection is developed in the present paper. The method is based on a mixture of both active and passive algorithms, which uses voltage phase angle (VPA) and voltage unbalance (VU). The suggested method presents a combination of benefits of each individual passive/active method, and therefore it is useful to appropriately detect islanding situation in a wide range of scenarios. The use of the suggested method results in smaller nondetection zone (NDZ), faster response, and improved power quality. In order to illustrate the effectiveness of this approach, simulation results are provided under different conditions, showing that the suggested algorithm can reach the required islanding protection requirements. In addition, the performance of the proposed method and some other methods are compared by the presence of a variety of transient faults and insignificant power mismatch.

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“…In a previous study, a hybrid IDT based on the combination of the slip mode frequency shift (an active IDT) and ROCOF and over/under frequency relay (a passive IDT) has been proposed. Another hybrid IDT based on the probability of islanding (PoI) which uses a combination of active active passive along with communication‐based technique (a remote IDT) is suggested in another study …”

Section: Introductionmentioning

confidence: 99%

Design and verification of hardcore reconfigurable relay for islanding detection and subsequent mode adaptation of microgrid

Kumar

Pratap

2019

Int Trans Electr Energ Syst

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Summary Islanding detection is an important factor of the microgrid (MG) protection. Since an MG can work in two modes, ie, grid‐connected and stand‐alone/islanded mode, during any abnormality appearing in the upstream grid, the MG must be decoupled at the point of common coupling and made to operate in the islanded mode to sustain the critical loads. Because of this mode switching, it is necessary to change the pick up current settings of the overcurrent relays (OCRs) at the distributed generators (DGs) to accommodate the changes in the current levels. In this paper, a hardcore reconfigurable multifunctional relay is designed, which is used for the islanding detection as well as mode adaptation within the MG. A modular approach is used to implement the design, which is targeted on field‐programmable gate array (FPGA). Hardware description language, Verilog, is used to develop the optimized hardware. The relay has different submodules viz overcurrent, voltage unbalance, and rate of change of frequency (ROCOF) modules, which are controlled by a soft controller using a multiplexer. Hardware‐in‐loop (HIL) verification for various test cases under different power mismatches is performed on the Real Time Digital Simulator (RTDS) with FPGA setup. The results suggest that the proposed hardcore relay have the capability to identify the islanding event within permissible time and subsequently adapt to the mode of operation effectively.

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Hybrid Islanding Detection in Microgrid With Multiple Connection Points to Smart Grids Using Fuzzy-Neural Network

Cited by 103 publications

References 20 publications

Shifting of research trends in islanding detection method - a comprehensive survey

Shifting of research trends in islanding detection method - a comprehensive survey

A hybrid islanding detection technique for inverter‐based distributed generator units

Design and verification of hardcore reconfigurable relay for islanding detection and subsequent mode adaptation of microgrid

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