The Impact of Power System Frequency Regulation Caused by Wind Disturbance

2014 ◽  
Vol 644-650 ◽  
pp. 3840-3843
Author(s):  
San Ming Liu ◽  
Zhi Jie Wang ◽  
Xia Sun ◽  
Yi Teng Liang ◽  
Xiao Wei Zhu
Keyword(s):  
Power System ◽  
Wind Power ◽  
Wind Farms ◽  
Practical Method ◽  
Voltage Regulation ◽  
Frequency Regulation ◽  
Wind Disturbance ◽  
Spinning Reserve ◽  
Related Factors ◽  
The Impact

The impacts of wind disturbance on voltage regulation and frequency regulation of power system were studied. The opinion that the regulation of power flow on the tie lines between the grids constrains the integrated capacity of wind power was put forward. Based on the real condition of Inner Mongolia power grid, an engineering practical method was put forward to calculate the integrated capacity of wind power under this constraint. The relationship between wind power and spinning reserve and the impacts of other related factors on the capacity of wind power were studied as well. The impact of wind disturbance on voltage stability where the wind farms are located was studied.

Research on Wind Power Fluctuation and its Impacts on Power System Frequency

2013 ◽  
Vol 291-294 ◽  
pp. 407-414 ◽  
Author(s):  
Guo Peng Zhou ◽  
Fu Feng Miao ◽  
Xi Sheng Tang ◽  
Tao Wu ◽  
Shan Ying Li ◽  
...  
Keyword(s):  
Power System ◽  
Wind Power ◽  
Large Scale ◽  
Wind Farms ◽  
Frequency Stability ◽  
Frequency Deviation ◽  
Intrinsic Mode Functions ◽  
Power Fluctuation ◽  
System Frequency ◽  
The Impact

The output power of wind farms has significant randomness and variability, which results in adverse impacts on power system frequency stability. This paper extracts wind power fluctuation feature with the HHT (Hilbert-Huang Transform) method. Firstly, the original wind power data was decomposed into several IMFs (Intrinsic Mode Functions) and a tendency component by using the EMD (Empirical Mode Decomposition) method. Secondly, the instantaneous frequency of each IMF was calculated. On this basis, taking a WSCC 9-bus power system as benchmark, the impact on power system frequency caused by wind power fluctuation was simulated in a real-time simulation platform, and the key component which results in the frequency deviation was found. The simulation results validate the wind power fluctuation impacts on frequency deviation, underlying the following study on power system frequency stability under the situation of large-scale intermittent generation access into the grid.

scholarly journals Reliability sensitivity of wind power system considering correlation of forecast errors based on multivariate NSTPNT method

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Wangchao Dong ◽  
Shenghu Li
Keyword(s):  
Power System ◽  
Wind Power ◽  
Relative Error ◽  
Correlation Coefficients ◽  
Wind Farms ◽  
Random Variable ◽  
Forecast Errors ◽  
Maximum Relative Error ◽  
Reliability Sensitivity ◽  
The Impact

AbstractThe impact of wind power forecast errors (WPFEs) on power system reliability can be quantified by a sensitivity model, which helps to determine the importance of different wind farms. However, the unknown distribution and correlation of WPFEs make it difficult to calculate the reliability sensitivity. The existing univariate non-standard third-order polynomial normal transformation (NSTPNT) expresses the reliability sensitivity of WPFEs by a normal random variable with explicit distribution, and is not suitable for multiple wind farms with correlated forecast errors. In this paper, the univariate NSTPNT method is extended to the multivariate by deriving the analytical expression of the correlation coefficients before and after the transformation, to establish the transformation between the WPFEs and a normal random vector (RV) with the specific correlation. A reliability sensitivity model to the WPFEs expressed to the normal RV is then proposed. The numerical results validate the accuracy of the proposed multivariate NSTPNT and the sensitivity model. The maximum relative error for using the sensitivity to approximate the change of reliability with distribution parameters of the WPFEs is less than 2.42%. The necessity of considering the correlation of WPFEs is analyzed. The maximum relative error of the sensitivity reaches 83% when the correlation is ignored.

scholarly journals Research on Variable Inertia Coordination Frequency Regulation Strategy Based on a Wind & Thermal Power Combined System

2019 ◽  
Vol 118 ◽  
pp. 02042
Author(s):  
Siqing Sheng ◽  
Pengwang Li ◽  
Hao Wu ◽  
Liwei Zhang ◽  
Maosen Fan
Keyword(s):  
Power System ◽  
Wind Power ◽  
Wind Farm ◽  
Thermal Power ◽  
Wind Farms ◽  
Frequency Regulation ◽  
Combined System ◽  
Operation Conditions ◽  
Incremental Model ◽  
Allowable Range

With the increasing installed capacity of the wind power, the power system has an obviously low inertia characteristic. It is of great significance to actively promote the virtual inertia frequency regulation technology of wind turbines (WTS) for improving the system frequency quality. The frequency regulation capability and frequency regulation effects of wind & thermal power units were analysed, and a variable inertia coordination frequency regulation strategy for different wind power penetration conditions was proposed in this paper. At the wind farm level, the dynamic frequency regulation participation coefficient of wind farms was fuzzily determined according to the operation conditions of WTS and the wind power penetration ratio. At the wind turbine level, the calculation method of the equivalent inertia constant of WTS was given based on the effective rotational kinetic energy. And the allowable range of frequency regulation parameters of WTS was determined by considering the incremental model of the system. Results indicated that the proposed coordinated frequency regulation strategy not only provided a reliable inertia support, but also maintained the stability of WTS. The frequency response performance of the high-penetration wind power system was improved.

The Optimal Spinning Reserve Considering Wind Power Prediction Deviation

2013 ◽  
Vol 860-863 ◽  
pp. 299-304
Author(s):  
Xiao Ming Jin ◽  
Dong Mei Zhao ◽  
Long Long Li ◽  
Dong Hui Zhang
Keyword(s):  
Power System ◽  
Wind Power ◽  
Power Prediction ◽  
Spinning Reserve ◽  
Load Duration ◽  
Power Characteristics ◽  
Wind Power Prediction ◽  
Equivalent Load ◽  
The Impact ◽  
Complete Optimization

With the capacity of wind power into power system increasing year by year, the impact of wind power characteristics (random and intermittent) on the system stable equilibrium is outstanding. To configure spinning reserve properly, this paper establishes a relatively complete optimization model of spinning reserve for power system with wind integrated. Using the similar samples to train prediction model, the precision of prediction is improved. The equivalent load duration curve (ELDC) considering load fluctuations and unit outage, is revised by analyzing the probability density of wind power prediction deviation. And the last, this paper gives an example to verify the theory.

scholarly journals A Simulation Model for Providing Analysis of Wind Farms Frequency and Voltage Regulation Services in an Electrical Power System

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2250
Author(s):  
Hubert Bialas ◽  
Ryszard Pawelek ◽  
Irena Wasiak
Keyword(s):  
Power System ◽  
Simulation Model ◽  
Wind Farm ◽  
Electrical Power ◽  
Wind Farms ◽  
Voltage Regulation ◽  
Frequency Regulation ◽  
Electrical Power System ◽  
Operation Conditions ◽  
Regulation Services

The article presents an original simulation model of a wind farm (WF) consisting of 30 wind turbine-generator units connected to the electrical power system (EPS) through power converters. The model is dedicated to the evaluation of the WF capabilities to participate in frequency and voltage regulation services in the power system. A system that allows for frequency and voltage control is proposed and implemented in the presented model. The system includes primary frequency regulation with synthetic inertia and secondary regulation available on request from the system operator. The concept of a reference power generation unit was introduced, according to which only one wind generator unit was modeled in detail, and the other units were replaced with simple current sources. Such a solution allowed for the reduction of size and complexity of the model as well as shortened the simulation time. Simulation tests were conducted in the PSCAD/EMTDC environment for an electrical power system composed of the wind farm, a synchronous generator, and a dummy load. The performance of the wind farm control system was analyzed in different operation conditions, and the control capabilities of the farm were assessed. Selected simulation results are presented and discussed in the paper. They illustrate the regulatory properties of the WF and confirm the correctness of the developed model.

scholarly journals Study of Power System Oscillation with Wind Power Equipping Frequency Regulation

2021 ◽  
Vol 1748 ◽  
pp. 052017
Author(s):  
Lei Yang ◽  
Wei Huang ◽  
Chen Wu ◽  
Shengnan Li ◽  
Yixuan Chen ◽  
...  
Keyword(s):  
Power System ◽  
Wind Power ◽  
Frequency Regulation

scholarly journals On the Contribution of Wind Farms in Automatic Generation Control: Review and New Control Approach

2018 ◽  
Vol 8 (10) ◽  
pp. 1848 ◽  
Author(s):  
Arman Oshnoei ◽  
Rahmat Khezri ◽  
SM Muyeen ◽  
Frede Blaabjerg
Keyword(s):  
Power System ◽  
Wind Turbine ◽  
Frequency Control ◽  
Wind Farms ◽  
Automatic Generation ◽  
Load Frequency Control ◽  
Automatic Generation Control ◽  
Frequency Regulation ◽  
Proportional Integral ◽  
Generation Control

Wind farms can contribute to ancillary services to the power system, by advancing and adopting new control techniques in existing, and also in new, wind turbine generator systems. One of the most important aspects of ancillary service related to wind farms is frequency regulation, which is partitioned into inertial response, primary control, and supplementary control or automatic generation control (AGC). The contribution of wind farms for the first two is well addressed in literature; however, the AGC and its associated controls require more attention. In this paper, in the first step, the contribution of wind farms in supplementary/load frequency control of AGC is overviewed. As second step, a fractional order proportional-integral-differential (FOPID) controller is proposed to control the governor speed of wind turbine to contribute to the AGC. The performance of FOPID controller is compared with classic proportional-integral-differential (PID) controller, to demonstrate the efficacy of the proposed control method in the frequency regulation of a two-area power system. Furthermore, the effect of penetration level of wind farms on the load frequency control is analyzed.

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