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phasor Measurement Unit Incorporated Adaptive Out-of-step protection of Synchronous Generator

Journal of Modern power Systems and Clean Energy 2021年第5期9卷 1032-1042页

作者： jigneshkumar p.desai Vijay H.Makwana Department of Electrical Engineering Sarvajanik College of Engineering and TechnologySurat-395001India Gujarat Technological University Ahmedabad-382424India Department of Electrical Engineering G.H.Patel College of Engineering and TechnologyAnand-388120India

The existing out-of-step(OOS)protection schemes have proven to be deficient in the prevention of significant *** protection schemes must not operate in stable power swing,and rapidly isolate an asynchronous generator or group of generators from the rest of the power system in case of unstable power *** paper proposes a novel phasor measurement unit(pMU)incorporating a polygon-shaped graphical algorithm for OOS protection of the synchronous *** unique pMU-based logic works further to classify the type of swing once the graphical scheme detects it,which can identify the complex power swing produced in the modern power *** proposed algorithm can take the correct relaying decision in the event of power swing due to renewable energy integration,load encroachment,and transient *** this paper,the original and modified Kundur two-area system with a power system stabilizer(pSS)is used to test the proposed *** the end,it provides assessment results of the proposed relay on the Indian power system during the blackout in July *** results demonstrate that the proposed algorithm is fast,accurate,and adaptive in the modern power system and shows better performance than the existing OOS protection schemes.

关键词： Out-of-step protection phasor measurement unit(pMU) power swing detection renewable energy integration

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A novel out of step relaying algorithm based on wavelet transform and a deep learning machine model

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protection and Control of Modern power Systems 2021年第1期6卷 500-511页

作者： jigneshkumar pramodbhai desai Vijay Hiralal Makwana Gujarat Technological University ChandkhedaAhmedabad382424GujaratIndia Electrical Engineering Department U.V.Patel College of EngineeringGanpat UniversityKhervaMehsana384012GujaratIndia Electrical Engineering Department G.H.Patel College of Engineering and TechnologyCVM UniversityBakrol RoadAnand388120GujaratIndia

Out-of-step protection of one or a group of synchronous generators is unreliable in a power system which has significant renewable power penetration. In this work, an innovative out-of-step protection algorithm using wavelet transform and deep learning is presented to protect synchronous generators and transmission lines. The specific patterns are generated from both stable and unstable power swing, and three-phase fault using the wavelet transform technique. Data containing 27,008 continuous samples of 48 different features is used to train a two-layer feed-forward network. The proposed algorithm gives an automatic, setting free and highly accurate classification for the three-phase fault, stable power swing, and unstable power swing through pattern recognition within a half cycle. The proposed algorithm uses the Kundur 2-area system and a 29-bus electric network for testing under different swing center locations and levels of renewable power penetration. Hardware-in-the-loop (HIL) tests show the hardware compatibility of the developed out-of-step algorithm. The proposed algorithm is also compared with recently reported algorithms. The comparison and test results on different large-scale systems show that the proposed algorithm is simple, fast, accurate, and HIL tested, and not affected by changes in power system parameters.

关键词： Classification Deep learning Out of Step Detection power swing Wavelet transform

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On the construction of balanced repeated measurements designs with good circular properties

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Statistical Theory and Related Fields 2023年第2期7卷 121-129页

作者： Muhammad Daniyal jigneshkumar Gondaliya Rashid Ahmed Department of Statistics The Islamia University of BahawalpurBahawalpurPakistan Gujarat Commerce College Gujarat UniversityAhmedabadIndia

Several fields,such as biological,medical,public health,agricultural sciences,etc.,require circular balanced repeated measurement designs with fewer unequal number of repeated measure-ments than the number of ***,the availability and high cost of experimental subjects in these fields prefer the design in fewer experimental ***,balancing the carryover effects of the treatments in minimal experimental subjects is one of the problems in this *** this paper,several new series of minimal circular nearly strongly balanced RMDs in periods of two and three different sizes are *** proposed construction of designs has high efficiency and,therefore,can save the cost of experimentations due to a fewer exper-imental *** of the designs are very useful because of the unavailability of strongly balanced RMDs for these combinations of parameters.A list of sets of shifts for the construction of minimal circular nearly SBRMDs has also been mentioned in the Appendix.

关键词： Carryover effects repeated measurement designs balanced repeated measurement designs strongly balanced repeated measurement designs circular nearly strongly balanced repeated measurement designs

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