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Geometry of Zero Sequence Components and Fault in The Power System Earthing
2024 IEEE Third International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES)Tapas Halder
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2016 7th India International Conference on Power Electronics (IICPE), 2016
The fault current at a particular node in microgrid system varies depending upon its grid connected and islanded mode of operations. In this scenario microgrid the function of microgrid central protection unit becomes challenging to maintain its simplicity and reliability during protection coordination.
Manjeet Singh, Prasenjit Basak
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The fault current at a particular node in microgrid system varies depending upon its grid connected and islanded mode of operations. In this scenario microgrid the function of microgrid central protection unit becomes challenging to maintain its simplicity and reliability during protection coordination.
Manjeet Singh, Prasenjit Basak
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International Journal of Electronics, 2017
ABSTRACTThis paper describes the design of a dynamic voltage restorer (DVR) that can simultaneously protect several sensitive loads from voltage sags in a region of an MV distribution network. A novel reference voltage calculation method based on zero-sequence voltage optimisation is proposed for this DVR to optimise cost-effectiveness in compensation ...
Le Jian +3 more
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ABSTRACTThis paper describes the design of a dynamic voltage restorer (DVR) that can simultaneously protect several sensitive loads from voltage sags in a region of an MV distribution network. A novel reference voltage calculation method based on zero-sequence voltage optimisation is proposed for this DVR to optimise cost-effectiveness in compensation ...
Le Jian +3 more
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2010 IEEE International Conference on Power and Energy, 2010
Distance relays are subject to fail to detect some earth faults since the fault resistance is usually much more in the earth faults rather than the ph-ph faults. Typically a traditional zero-sequence-based method is used to detect a high-resistance earth fault. However, this method fails to detect some high-resistance earth faults.
Amin Samanfar, Behnam Mahamedi
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Distance relays are subject to fail to detect some earth faults since the fault resistance is usually much more in the earth faults rather than the ph-ph faults. Typically a traditional zero-sequence-based method is used to detect a high-resistance earth fault. However, this method fails to detect some high-resistance earth faults.
Amin Samanfar, Behnam Mahamedi
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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2013
The dynamic voltage restorer (DVR) is an effective protection device for wind turbine generators based on doubly-fed induction generator (DFIG) that is operated under unbalanced voltage dip conditions. The compensating voltages of the DVR depend on the voltage dips and on the influence of the zero sequence component. The zero sequence component results
Quach Ngoc Thinh +3 more
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The dynamic voltage restorer (DVR) is an effective protection device for wind turbine generators based on doubly-fed induction generator (DFIG) that is operated under unbalanced voltage dip conditions. The compensating voltages of the DVR depend on the voltage dips and on the influence of the zero sequence component. The zero sequence component results
Quach Ngoc Thinh +3 more
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2021
Accurate diagnosis of slight inter-turn short circuit fault (ISCF) of permanent magnet synchronous motor (PMSM) has always been a difficult problem in the field of electrical engineering. Aiming at the problem of ineffective ISCF diagnosis, a method on Phase angle diagnosis of zero-sequence components is proposed.
Yecheng Zhang, Gai Liu
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Accurate diagnosis of slight inter-turn short circuit fault (ISCF) of permanent magnet synchronous motor (PMSM) has always been a difficult problem in the field of electrical engineering. Aiming at the problem of ineffective ISCF diagnosis, a method on Phase angle diagnosis of zero-sequence components is proposed.
Yecheng Zhang, Gai Liu
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Zero-sequence components in unit-connected generator with ungrounded neutral during ground-faults
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409), 2002An analysis of voltage zero-sequence components in a generator during normal operation (pre-fault conditions) and during ground-faults in stator winding of generator with ungrounded neutral is presented. The changes in voltage zero-sequence components of fundamental frequency and 3rd harmonic during generator pre-fault conditions, ground-faults in ...
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High Impedance Fault Area Location in Distribution Systems Based on Current Zero Sequence Component
IEEE Latin America Transactions, 2016This paper presents a new methodology for detection and area location of high impedance faults (HIF) on unbalanced distribution systems. The method is called Quasi-Differential Zero Sequence Protection (PQDSZ) and it detects these faults by analyzing the current zero sequence rms value on a distribution feeder.
J.T.A. Vianna +2 more
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IEEE Transactions on Power Electronics, 2015
This paper focuses on the development of an online method for diagnosing high-resistance connection (HRC) in delta-connected permanent magnet synchronous machine (PMSM) using zero-sequence current component (ZSCC). The development of this method begins with the establishment of the mathematic model of the PMSM with the HRC.
Jun Hang +3 more
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This paper focuses on the development of an online method for diagnosing high-resistance connection (HRC) in delta-connected permanent magnet synchronous machine (PMSM) using zero-sequence current component (ZSCC). The development of this method begins with the establishment of the mathematic model of the PMSM with the HRC.
Jun Hang +3 more
openaire +1 more source