Assessment of voltage fluctuations based on wind power fluctuation characteristics

Wind power plants are an increasingly common source of electricity located in rural areas. As a result of the high variability of wind power, and thus the generated power, these sources should be classified as unstable sources. In this paper, the authors attempted to determine the impact of wind turbine operation on the parameters of electricity supplied to farms located near the source. As a result of the conducted field tests, variability courses of the basic parameters describing the supply voltage were obtained. The influence of power plant variability on the values of voltage, frequency, and voltage distortion factor was determined. To estimate the capacity of the transmission lines, the reactive power produced in the power plant and its effect on the value of the power factor were determined. The conducted research and analysis showed that the wind power plant significantly influences voltage fluctuations in its immediate vicinity (the maximum value registered was close to 2%, while the value required by law was 2.5%). Although all the recorded values are within limits specified by the current regulations (e.g., the THD value is four times lower than the required value), wind turbines may cause incorrect operation of loads connected nearby. This applies mainly to cases where consumers sensitive to voltage fluctuations are installed in the direct vicinity of the power plant.

Download Full-text

Optimization of Energy Storage Capacity to Smooth Wind Power Fluctuation

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/687/1/012103 ◽

2021 ◽

Vol 687 (1) ◽

pp. 012103

Author(s):

Zenggong Cao ◽

Chunyi Wang ◽

Bo Peng ◽

Yasong Wang ◽

Peng Du ◽

...

Keyword(s):

Energy Storage ◽

Wind Power ◽

Storage Capacity ◽

Power Fluctuation ◽

Energy Storage Capacity

Download Full-text

The Research of Wind Power Fluctuation in Different Time Intervals

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.953-954.458 ◽

2014 ◽

Vol 953-954 ◽

pp. 458-461

Author(s):

Yi Hui Zhang

Keyword(s):

Wind Speed ◽

Probability Distribution ◽

Wind Power ◽

Wind Farm ◽

Time Window ◽

Missing Information ◽

Power Fluctuation ◽

Time Intervals ◽

Trend Pattern ◽

Length Of Interval

Power from wind turbines is mainly related to the wind speed. Due to the influence of the uncertainty of the wind, intermittent and wind farm in units of the wake, wind power has fluctuations. Based on the field measurement, it is found that t location-scale distribution is suitable to identify the probability distribution of wind power variations. By analyzing the fluctuation of a single in different time intervals, we find that the distribution of wind power fluctuation possesses a certain trend pattern. With the length of the time window increasing, the fluctuations increase and some information has been missed. We define an index to calculate the quantity of missing information and can use that to evaluate whether a certain length of interval is acceptable.

Download Full-text