Value comparison between FRT and DVS functions on renewable energy

Jozuka, Takeshi; Iriguchi, Tsuyoshi; Komami, Shintaro

doi:10.1002/eej.23149

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…The voltage dip at the common coupling point is employed to regulate the reactive power. The reference reactive power was calculated as regards [24], [25].…”

Section: Proposed Rsc Controllermentioning

confidence: 99%

Dynamic analysis of grid-connected hybrid wind farm

Akanto

Islam

Jahan

et al. 2023

IJPEDS

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Since the last couple of years, the expansion of grid-connected wind farms (WFs) has increased dramatically. The wind turbine might be a fixed-speed squirrel cage induction generator (FSWT-SCIG) or a variable speed wind turbine with a doubly-fed induction generator (VSWT-DFIG). The main disadvantage of FSWT-SCIG is its lack of ability to adjust power quality. Inversely, the VSWT-DFIG is a competitive wind turbine technology that allows for the effective management of both active and reactive power outputs. Moreover, it has some extraordinary functionaries rather than FSWTSCIG. However, the major downside to this system is that it only has a partial rating AC/DC/AC power converter, which is extremely expensive. Hence, to reduce the overall cost combining the implementation of VSWT-DFIG and FSWT-SCIG in a WF could be a feasible alternative. Therefore, a novel DFIG control technique is proposed in this article, which can keep the connection point voltage of the hybrid WF stable during dynamic analysis. To evaluate the proposed controller responses PSCAD/EMTDC software has been used.

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“…The voltage dip at the common coupling point is employed to regulate the reactive power. The reference reactive power was calculated as regards [24], [25].…”

Section: Proposed Rsc Controllermentioning

confidence: 99%

Dynamic analysis of grid-connected hybrid wind farm

Akanto

Islam

Jahan

et al. 2023

IJPEDS

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show abstract

“…This was accomplished by regulating the reactive power based on the voltage dip at the common coupling point. The reference reactive power generated based on the voltage dip can be computed as follows [37,38]:…”

Section: Proposed Rotor-side Converter (Rsc) Control Schemementioning

confidence: 99%

LVRT and Stability Enhancement of Grid-Tied Wind Farm Using DFIG-Based Wind Turbine

Akanto

Hazari

2021

ASI

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According to the grid code specifications, low voltage ride-through (LVRT) is one of the key factors for grid-tied wind farms (WFs). Since fixed-speed wind turbines with squirrel cage induction generators (FSWT-SCIGs) require an adequate quantity of reactive power throughout the transient period, conventional WF consisting of SCIG do not typically have LVRT capabilities that may cause instability in the power system. However, variable-speed wind turbines with doubly fed induction generators (VSWT-DFIGs) have an adequate amount of LVRT enhancement competency, and the active and reactive power transmitted to the grid can also be controlled. Moreover, DFIG is quite expensive because of its partial rating (AC/DC/AC) converter than SCIG. Accordingly, combined installation of both WFs could be an effective solution. Hence, this paper illustrated a new rotor-side converter (RSC) control scheme, which played a significant role in ensuring the LVRT aptitude for a wide range of hybrid WF consisting of both FSWT-SCIGs and VSWT-DFIGs. What is more, the proposed RSC controller of DFIG was configured to deliver an ample quantity of reactive power to the SCIG during the fault state to make the overall system stable. Simulation analyses were performed for both proposed and traditional controllers of RSC of the DFIG in the PSCAD/EMTDC environment to observe the proposed controller response. Overall, the presented control scheme could guarantee the LVRT aptitude of large-scale SCIG.

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“…When the absolute value of deviation of grid voltage, |∆V |, becomes less than or equal to 1% of pre-fault voltage (the appropriate value for the voltage fluctuation in an extra-high-voltage system in Japan is within 1-2%), the reactive power reference, Q ref , is set to 0. When |∆V | becomes greater than 1 %, Q ref is calculated as follows [12]:…”

Section: Scheme Of Proposed Control Modelmentioning

confidence: 99%

Enhancement of Power System Transient Stability by Active and Reactive Power Control of Variable Speed Wind Generators

2020

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This paper proposes a novel control method for enhancing transient stability by using renewable energy sources (RES). The kinetic energy accumulated in a rotor of variable speed wind generator (VSWG) is proactively used as the active power source, which is controlled according to the frequency measured at the wind farm. In addition, coordinated reactive power control according to the grid voltage is also carried out to more effectively use the kinetic energy of the VSWG. The effects of the proposed control system were evaluated by simulation analyses performed using a modified IEEE nine-bus power system network made up of synchronous generators (SGs), a photovoltaic (PV) system and a VSWG-based wind farm. Furthermore, the coordinated reactive power control between the VSWG and PV system was also demonstrated.

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Value comparison between FRT and DVS functions on renewable energy

Cited by 3 publications

References 9 publications

Dynamic analysis of grid-connected hybrid wind farm

Dynamic analysis of grid-connected hybrid wind farm

LVRT and Stability Enhancement of Grid-Tied Wind Farm Using DFIG-Based Wind Turbine

Enhancement of Power System Transient Stability by Active and Reactive Power Control of Variable Speed Wind Generators

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