Results 21 to 30 of about 10,246 (263)
Implementation method of hybrid simulation interface for active distribution network based on virtual line compensation [PDF]
电力工程技术, 2022 Digital physical hybrid simulation is an effective means of active distribution network simulation and analysis,and the interface algorithm is the key to ensuring the stability and accuracy of the system. Aiming at the problem that the existing interface
E TAO, YIN Zhongdong, WANG Qunfei
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Reduced RLC Impedance Circuit Model of Electric Vehicle DC Charging Station
南方能源建设, 2023 [Introduction] The potential positive feedback of virtual inertia and damping control (VIDC) may exacerbate the interaction within the control loop, causing low-frequency oscillation of bus voltage and disrupting the stability of electric vehicle DC ...
Gang LIN, Ningyi DAI
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Improving synchronization stability of grid connected converters by virtual impedance
IET Generation, Transmission & Distribution, 2021 With the increasing penetration of inverter based distributed generation, recent grid codes do not permit the disconnection of converters as soon as fault happens.
Omid Abdoli +2 more
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IEEE Transactions on Smart Grid, 2022 An islanded microgrid (MG) including low-inertia converter-based distributed generations (DGs) is subjected to instability. The virtual inertia concept was proposed to alleviate the stability issues by imitating the synchronous generators behavior. This paper spotlights on the optimization of virtual synchronous generator (VSG) parameters and virtual ...
Bahram Pournazarian +4 more
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Adaptive Virtual Impedance Droop Control Based on Consensus Control of Reactive Current
Energies, 2018 It is difficult to achieve accurate distribution of reactive power based on conventional droop control due to the line impedance mismatch in an islanded microgrid.
Zhilin Lyu +4 more
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VSG Control Strategy Incorporating Voltage Inertia and Virtual Impedance for Microgrids
Energies, 2020 Virtual synchronous generator (VSG) control lacks voltage inertia and powerful decoupling capabilities. The voltage of the distributed generator (DG) unit controlled by the VSG will be easily affected by power fluctuations and high-frequency noise, and ...
Zipeng Ke +6 more
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Presynchronous Grid-Connection Strategy of Virtual Synchronous Generator Based on Virtual Impedance [PDF]
Mathematical Problems in Engineering, 2020 The virtual synchronous generator (VSG) technology of inverter is widely used to provide the inertia and damping support for power system. However, an additional measurement device PLL (phase-locked loop) is required in the virtual synchronous generator grid connection to track the voltage phase, amplitude, and frequency, which restricts the flexible ...
Guanfeng Zhang +3 more
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Frontiers in Energy Research, 2022 The microgrid (MG) ensures a reliable power supply as it can work in a grid-independent mode. This mode requires a coordinated control strategy among distributed generators (DGs). One major challenge in a grid-independent MG is the reactive power-sharing
Suchitra D +6 more
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Sub-Synchronous Oscillation Suppression Based on VSG Virtual Impedance Feasible Domains
南方能源建设[Objective] The virtual synchronous generator (VSG) system exhibits negative damping characteristics under weak grid connection, which triggers subsynchronous oscillations and leads to system instability.
Yuxin SUN, Qin SUN, Yi DU
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Study of a virtual-impedance of the capacitor-series inverter for wider accurate power control range
Energy Reports, 2022 A droop control method with virtual-impedance for capacitor-series inverter (CSI) is studied in this paper. Compared with the traditional inverters, CSI has more merits in low-cost reactive power compensation.
Wenyang Deng +4 more
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