Simulation analysis on transient power characteristics of wind power grid-connected system under grid voltage sag

2016 ◽  
Author(s):  
Jianlan Sheng ◽  
Gelan Zhu
Keyword(s):  
Wind Power ◽  
Simulation Analysis ◽  
Power Grid ◽  
Voltage Sag ◽  
Grid Voltage ◽  
Power Characteristics

Study of Influence on Power System Voltage Stability of Wind Farm Power Output Fluctuation

2013 ◽  
Vol 694-697 ◽  
pp. 846-849
Author(s):  
Jian Yuan Xu ◽  
Wei Fu Qi ◽  
Yun Teng
Keyword(s):  
Power System ◽  
Wind Power ◽  
Power Output ◽  
Voltage Stability ◽  
Wind Farm ◽  
Reactive Power ◽  
Simulation Analysis ◽  
Power Grid ◽  
Reactive Power Compensation ◽  
Grid Integration

This paper mainly studies wind power fluctuations how to affect voltage stability after the wind power grid integration, and reactive power compensation equipment on improving effect. In certain parts of the wind farm, for example, firstly, analyzing the wind farm reactive power problems. Then introduce the reactive power compensation equipment that used in the wind farm. Finally, with PSCAD software, making a simulation analysis about the influence on the power grid voltage according to adopting the different reactive power compensation devices or not.

Detection Method of Grid Voltage Sag for Offshore Wind Power Converter

2021 ◽  
Author(s):  
Yukun Chen ◽  
Zhanqing Yu ◽  
Mingzhu Guo ◽  
Lu Qu ◽  
Bojin Tang ◽  
...  
Keyword(s):  
Wind Power ◽  
Detection Method ◽  
Power Converter ◽  
Offshore Wind ◽  
Voltage Sag ◽  
Grid Voltage ◽  
Offshore Wind Power

scholarly journals Design of alternating current voltage–regulating circuit based on thyristor: Comparison of single phase and three phase

2020 ◽  
Vol 53 (5-6) ◽  
pp. 884-891
Author(s):  
Zonglu Zhang
Keyword(s):  
Normal Level ◽  
Single Phase ◽  
Simulation Analysis ◽  
Power Grid ◽  
Voltage Regulation ◽  
Voltage Sag ◽  
Voltage Regulator ◽  
Phase Voltage ◽  
Current Voltage ◽  
Three Phase

The voltage sag problem in a power grid can be solved by a voltage regulator. In this study, the voltage regulator based on thyristor was used to compensate the single-phase and three-phase voltage of voltage sag fault, so as to recover the normal level of voltage. The simulation analysis was carried out on MATLAB. The results showed that voltage sag faults mainly affected the amplitude of voltage, but not the frequency of voltage. After voltage regulation, the single-phase and three-phase voltage waveforms in the fault period had a certain recovery, but the voltage regulator had a certain hysteresis effect.

scholarly journals Research On VSG Comprehensive Control Strategy For Power Grid Voltage Sag

2020 ◽  
Vol 512 ◽  
pp. 012139
Author(s):  
Yu Xiangyang ◽  
Lu Zekai ◽  
Ding yan ◽  
Gao Chunyang ◽  
Liu Shiyan ◽  
...  
Keyword(s):  
Control Strategy ◽  
Power Grid ◽  
Voltage Sag ◽  
Grid Voltage

scholarly journals Analysis the Transient Process of Wind Power Resources when there are Voltage Sags in Distribution Grid

2018 ◽  
Vol 35 ◽  
pp. 05002
Author(s):  
Do Nhu Y
Keyword(s):  
Wind Power ◽  
Transient Process ◽  
Voltage Sag ◽  
Voltage Sags ◽  
Distribution Grid ◽  
Grid Voltage ◽  
Power Resources ◽  
Effective Operation ◽  
Safety And Reliability ◽  
Power Project

Vietnam has many advantages of wind power resources. Time by time there are more and more capacity as well as number of wind power project in Vietnam. Corresponding to the increase of wind power emitted into national grid, It is necessary to research and analyze in order to ensure the safety and reliability of win power connection. In national distribution grid, voltage sag occurs regularly, it can strongly influence on the operation of wind power. The most serious consequence is the disconnection. The paper presents the analysis of distribution grid’s transient process when voltage is sagged. Base on the analysis, the solutions will be recommended to improve the reliability and effective operation of wind power resources.

scholarly journals Multi-Mode Voltage Sag/Swell Generator Based on Three-Phase Inverter Circuit

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6520
Author(s):  
Qiguo Han ◽  
Xing Wang ◽  
Pengfei Hu ◽  
Maolin Wang ◽  
Xu Luo ◽  
...  
Keyword(s):  
Low Voltage ◽  
Power Grid ◽  
Thermal Power ◽  
Voltage Sag ◽  
Phase Inverter ◽  
Grid Voltage ◽  
Three Phase ◽  
Inverter Circuit ◽  
Three Phase Inverter ◽  
Multi Mode

The voltage ride through capability of the major auxiliary variable-frequency drive (VFD) in large thermal power plants is the key technical issue of power grid and source coordination. In order to test the high voltage ride through (HVRT) and low voltage ride through (LVRT) capability of the auxiliary VFD, it is necessary to develop a power supply to simulate different grid voltage sag and swell accurately. In this paper, a generator (VSSG) based on the common three-phase inverter circuit that can simulate multi-mode voltage sag/swell is proposed. The designed main circuit consisting of transformer, rectifier, DC split capacitors, three-phase inverter, and LC-filter can generate single-phase and three-phase voltage sag, swell, and phase angle jumping flexibly. The developed control strategies composed of the double closed-loop control and the neutral voltage balance control achieve accurate output, fast dynamic response, and step-less adjustment. Simulation and experiment results verify the multi-mode voltage simulation performances of the proposed VSSG, which can be effectively used to emulate power grid voltage sag and swell phenomena under the IEEE 1159 and IEC standards.

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