scholarly journals A Rolling Optimization Method of Reserve Capacity Considering Wind Power Frequency Control

2021 ◽  
Author(s):  
Chao Xing ◽  
Xinze Xi ◽  
Shengnan Li
Keyword(s):  
Wind Power ◽  
Frequency Control ◽  
Optimization Method ◽  
Reserve Capacity ◽  
Power Frequency ◽  
Rolling Optimization

Study on Dispersed Wind Power Connected to Power Grid

2014 ◽  
Vol 672-674 ◽  
pp. 262-268
Author(s):  
Wei Xu ◽  
Xiang Ning Xiao ◽  
Zhi Chao Zhou
Keyword(s):  
Wind Power ◽  
Reactive Power ◽  
Frequency Control ◽  
Power Grid ◽  
Active Power ◽  
Fault Ride Through ◽  
Power Frequency ◽  
Grid Codes ◽  
Definition Of ◽  
Technology Indicators

The necessity for grid codes of the dispersed wind power connected to power grid is described briefly and the definition of the dispersed wind power is discussed compared with the distributed wind power in China. Aimed at the dispersed wind power, the main technology indicators of wind power grid codes between Denmark (below 100kV), Germany (below 60kV) and China in aspects of access principle, connection mode, active power / frequency control, reactive power / voltage control, fault ride through and power quality are compared to provide reference for the modification and completion of the dispersed wind power grid code in China.

Study on the "Phase Hopping" AC-AC Frequency Conversion Method with Approximately Continuous Frequencies

2020 ◽  
Vol 13 (8) ◽  
pp. 1217-1226
Author(s):  
Zhengwang Xu ◽  
Guozhuang Jiang ◽  
Ke Kun ◽  
Yuchun Yi
Keyword(s):  
Output Voltage ◽  
Frequency Conversion ◽  
Frequency Control ◽  
Actual Application ◽  
Power Frequency ◽  
Voltage Frequency ◽  
The Law ◽  
Large Cycle ◽  
Selection Of ◽  
Conversion Technology

Background: The output voltage frequency for the previously proposed "phase hopping" AC-AC frequency conversion technology is determined by the law that the number of output voltage cycles is reduced by one relative to the power frequency in a large cycle containing six jumps. According to the law, only a limited number of output frequencies, such as 37.5 Hz, 42.86 Hz and 45 Hz are found. Due to the large spacing between the output frequencies, the "phase hopping" frequency conversion technology is difficult to put into practical use. Methods: In this paper, the law of the output frequency control is generalized so that the number of output cycles in a large cycle is reduced by n relative to the power frequency. The analysis shows that the appropriate selection of large cycles, including the number of power frequency cycles and the value of n, can find more frequencies to be used. Reducing the interval between the output frequencies within 1Hz. Results: The analysis results were verified in simulation by MATLAB, and the harmonics and the feasibility of the actual application were analyzed. Conclusion: Finally, an experimental platform was built and an experimental analysis was carried out. The experimental results show that the theoretical and simulation analyses are correct.

scholarly journals Robust exponential load frequency control for time delay power system considering wind power

2020 ◽  
Vol 53 (2) ◽  
pp. 12536-12541
Author(s):  
Li Jin ◽  
Xingchen Shang-Guan ◽  
Yong He ◽  
Chuan-Ke Zhang ◽  
Lin Jiang ◽  
...  
Keyword(s):  
Time Delay ◽  
Power System ◽  
Wind Power ◽  
Frequency Control ◽  
Load Frequency Control ◽  
Load Frequency
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