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A negative sequence current injection (NSCI)-based active protection scheme for islanded microgrids
International Journal of Electrical Power & Energy SystemsThe growing penetration of converter interfaced generation creates unprecedented challenges to protection strategies at all voltage levels. This paper proposes a novel Negative Sequence Current Injection (NSCI)-based active protection scheme for islanded
Zhenkun Yang +2 more
doaj +5 more sources
A Negative-sequence Current Injection Method to Mitigate Voltage Imbalances in Microgrids [PDF]
Eletrônica de Potência, 2011 This paper proposes a control strategy to reduce the voltage imbalances by injection of a proper negative-sequence current into the microgrid. This task can be done by each inverter connected to the microgrid in a shared way.
Gustavo M. S. Azevedo +4 more
doaj +2 more sources
Synchronous Power Control of Grid-Connected Power Converters under Asymmetrical Grid Fault [PDF]
Energies, 2017 Control of grid-connected power converters is continuously developing to meet the grid codes, according to which the generation units should keep connected to the grid and further provide ancillary services, such as voltage and frequency support ...
Weiyi Zhang +3 more
doaj +3 more sources
Influence of Negative Sequence Injection Strategies on Faulted Phase Selector Performance
Energies, 2022 Renewable power is expected to increase drastically in the coming years due to the energy transition. A large part of the newly installed generators will be connected to the power system through inverters and electronic converters, whose behaviour ...
María Teresa Villén +3 more
doaj +3 more sources
Control aspects of the dynamic negative sequence current injection of type 4 wind turbines [PDF]
2014 IEEE PES General Meeting | Conference & Exposition, 2014 State-of-the-art distributed generation with a fully rated converter only injects positive sequence current into unbalanced faults. Recently, both publications and draft standards have suggested that the injection of negative sequence reactive current into unbalanced faults can have benefits for the power system.
Geert Deconinck
exaly +3 more sources
Islanding detection method with negative-sequence current injection under unbalanced grid voltage
2015 IEEE 2nd International Future Energy Electronics Conference (IFEEC), 2015 This paper proposes an active islanding detection method for the BESS (Battery Energy Storage System) with a three-phase inverter which is connected to the unbalanced AC grid. The proposed method adopts the DDSRF (Decoupled Double Synchronous Reference Frame) PLL (Phase-Locked Loop) so that the independent control of positive-sequence and negative ...
Byung-Moon Han
exaly +3 more sources
The Transactions of the Korean Institute of Power Electronics, 2015 A new algorithm is proposed for the estimation of equivalent grid impedance at the point of common coupling of a grid-tie inverter output. The estimated impedance parameter can be used for the improvement of the performance and the stability of the distributed generation system.
Seung-Ho Song
exaly +3 more sources
Journal of Modern Power Systems and Clean Energy, 2021 This paper presents a controller model of asymmetric current injection for converter-interfaced generators suitable for root-mean-square (RMS) phasor-domain, fundamental-frequency, three-phase, and dynamic simulation tools.
Victor A.F. Almeida +2 more
doaj +1 more source
A low voltage ride-through control method of IIDG considering multiple control targets [PDF]
电力工程技术, 2022 There are some disadvantages in existing inverter-interfaced distributed generators (IIDG) low voltage ride-through control methods,such as unsatisfactory voltage support effects,single control objectives,and the risk of over-limiting the output current.
HE Jin +5 more
doaj +1 more source
Energies, 2021 This paper presents a vector current controller (in the synchronous reference, or the dq, frame) with negative-sequence current injection capability for three-phase grid-connected converters.
Houshang Karimi +3 more
doaj +1 more source