Reactive Power and Voltage Coordinated Control of Wind Farm for Parallel Running STATCOM

Xu, Lufei; Chen, Tianhua; Luo, Yang; Chen, Jianhua; Du, Lei; Zhong, Hailiang

doi:10.1109/isgt-asia.2019.8880872

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…The value of X 1 (about 0.95 pu) closes to the reference voltage of 1 pu. This improvement of voltage is due to the capacitor current I x and reactive power compensator [22,23]. Figure 5 shows the schematic diagram of the STATCOM device, where the STATCOM is represented by the inverter and the capacitor.…”

Section: Introductionmentioning

confidence: 99%

Voltage Control of a Three-Phase Distribution Grid using a DC Microgrid-Fed STATCOM

Khater,

Elkady,

Amr

et al. 2024

Eng. Technol. Appl. Sci. Res.

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With the increasing penetration of microgrids in distribution systems, the possibility for voltage variations increases. This paper proposes the use of a static synchronous compensator (STATCOM) fed by a DC microgrid to control the voltage of a 3-phase AC distribution grid and provide bidirectional active power transfer from the AC grid to the DC microgrid and vice versa. A simplified control is applied to this system to manage the magnitude and angle of the system voltage at the point of common coupling. With the use of a PI controller and pulse width modulation, the proposed control was able to modify the active and reactive power compensation. The control approach is characterized by its simplicity and rapid response to system changes, such as fault occurrences or load variations. The proposed control system is applied after converting the 3-phase system into a dq system to simplify the voltage regulation process. The PSCAD package is used to perform the simulation. Results demonstrate that it is possible to control STATCOM to offset reactive power and regulate grid voltage. The results validated the ability of active power transfer through the line by injecting negative and positive active power. The transfer of active and reactive power from the AC grid to the DC microgrid, and vice versa, is examined in this study following the STATCOM rating and the energy management demands.

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Section: Introductionmentioning

confidence: 99%

Voltage Control of a Three-Phase Distribution Grid using a DC Microgrid-Fed STATCOM

Khater,

Elkady,

Amr

et al. 2024

Eng. Technol. Appl. Sci. Res.

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“…The literature [5] discusses the start-stop control of an MMC-HVDC system with a two-terminal active system. The literature [6] discusses in detail the converter station start-up control of double-ended and multi-terminal modular multilevel converter-type HVDC systems suitable for grid black start. The literature [7] and literature [8] investigate scenarios where DFIGs are connected to the grid via MMC-HVDC for start-up control strategies.…”

Section: Introductionmentioning

confidence: 99%

Research on MMC-HVDC start-up control strategy for grid-connected wind power

Yu,

Wang

2023

Fourth International Conference on Artificial Intelligence and Electromechanical Automation (AIEA 2023)

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In recent years, flexible DC transmission has developed rapidly, and offshore wind power DC grid connection projects are using modular multilevel converters, which will become the main grid connection method for large wind farms. However, most of the research on MMC-HVDC uses two-terminal power systems, whose control strategies must be different from two-terminal active systems, and more research is needed on the application of MMC-HVDC in the field of wind power grid connection. Based on this paper the equivalent mathematical model of a wind farm is studied, the flexible DC startup process of the wind farm is analysed and the proposed MMC controlled rectifier charging strategy is validated by simulation.

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“…Reference [1] proposed a coordinated control strategy based on the combined control of reactive power and voltage. This strategy involves the coordinated control of the reactive power and voltage of static synchronous compensators in the parallel operation of wind farms.…”

Section: Introductionmentioning

confidence: 99%

Reactive Load Prediction Based on a Long Short-Term Memory Neural Network

et al. 2020

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Accurate reactive load prediction can improve the accuracy and process of reactive power optimization for power grids and improve the control effect. The changes in the bus reactive load and active load are not synchronous, the base of the reactive load is small, nonlinear changes are abundant, and it is difficult to mine the inherent data trends. In view of the above problems, this paper proposes a method for predicting bus reactive loads based on deep learning. A bus reactive load prediction model is constructed based on a dual-input long short-term memory neural network to mine the detailed characteristics of active and reactive load data. Active and reactive loads are used as input and output data for the dynamic modeling of load time series data to form integrated forecasts of bus active and reactive loads. The experimental results show that this method can accurately predict the reactive power load of buses, and the prediction accuracy is better than that of time series and general long short-term memory neural network prediction models. INDEX TERMS Reactive power optimization, reactive load prediction, long short-term memory neural network.

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Reactive Power and Voltage Coordinated Control of Wind Farm for Parallel Running STATCOM

Cited by 6 publications

References 5 publications

Voltage Control of a Three-Phase Distribution Grid using a DC Microgrid-Fed STATCOM

Voltage Control of a Three-Phase Distribution Grid using a DC Microgrid-Fed STATCOM

Research on MMC-HVDC start-up control strategy for grid-connected wind power

Reactive Load Prediction Based on a Long Short-Term Memory Neural Network

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