Quantifying the Risk of Wind Power Forecasting Error on Power System Optimal Dispatching

2014 ◽  
Vol 672-674 ◽  
pp. 355-360
Author(s):  
Hui Ren ◽  
Jia Qi Fan ◽  
David Watts ◽  
Dan Wei
Keyword(s):  
Power System ◽  
Wind Power ◽  
Power Output ◽  
Interior Point Method ◽  
Large Scale ◽  
Environmental Cost ◽  
Wind Generation ◽  
Forecasting Error ◽  
Typical Day ◽  
Operation Risk

With large-scale wind power integrates into power system, the risk brought by the uncertainty of wind power output can no longer be neglected. Under this circumstance, the operation risk due to the uncertainty of wind generation and the contribution of wind power to energy conservation and emission reduction are quantified, and the corresponding quantified operational cost, environmental cost and operation risk are being integrated into the economic dispatching model to establish a multi-objective optimization dispatch model. Non-dual interior point method is used to solve the optimization problem. The method is applied to Hebei Southern power grid, simulated with actual wind power output data of one typical day. Simulation results show the rationality and effectiveness of the proposed method.

Vulnerability Assessment for Large-Scale Wind Farm

2014 ◽  
Vol 1070-1072 ◽  
pp. 279-283
Author(s):  
Wei Zheng ◽  
Run Dong Ge ◽  
Wen Ying Liu ◽  
Dan Dan Zhu ◽  
Hui Yong Li
Keyword(s):  
Power System ◽  
Wind Power ◽  
Power Output ◽  
Vulnerability Assessment ◽  
Large Scale ◽  
Wind Farm ◽  
Prevention Measures ◽  
System Vulnerability

Power system vulnerability is one new concept for power security as the extend of security in recent years. At present, the power system vulnerability research has obtained stage accomplishment. Meanwhile, the randomness and intermittence of the wind lead to the wind power output unsteady. It not only has a bad influence on the power system, but also makes wind farm vulnerability even more obvious. Based on this, vulnerability assessment is applied to large-scale wind farm in this paper. Vulnerability indexes of the bus in large-scale wind farm are put forward and prevention measures are also given and it will has reference meaning to the security enhance of both grid and wind farm.

Optimal Reserve Distribution Model for Power System with Large Scale Wind Power Integration

2014 ◽  
Vol 596 ◽  
pp. 669-673
Author(s):  
Chen He ◽  
Ji Chun Liu ◽  
Jia Yi Li ◽  
Yun Xia Wu ◽  
Xia Li ◽  
...  
Keyword(s):  
Power System ◽  
Wind Power ◽  
Large Scale ◽  
Distribution Model ◽  
Coal Consumption ◽  
Wind Power Integration ◽  
Forecasting Error ◽  
Before And After ◽  
Consistency Constraints ◽  
Optimal Reserve

Firstly, taking into account the load forecasting error and uncertainty of wind power, the coal saving benefit and network loss of the reserve are combined into integrated coal consumption of thermal units. Then, the consistency constraints of reserve capacity are derived. On the basis of the work mentioned above, the optimal reserve distribution model for power system with large scale wind power integration is proposed. This model is used to compare the network loss, integrated coal consumption and the allocation of reserve before and after adding consistency constraints. Finally, simulation results on the IEEE-RTS24 system verify the effectiveness of the algorithm in solving reserve transfer between units, ensuring the fairness of market and providing a reference to dispatchers.

Power System with Wind Power Connection Anti-Peak Regulation Ability Analysis

2012 ◽  
Vol 214 ◽  
pp. 417-422
Author(s):  
Dong Feng Yang ◽  
Su Quan Zhou
Keyword(s):  
Power System ◽  
Wind Power ◽  
Power Output ◽  
Large Scale ◽  
Real Data ◽  
Integer Program ◽  
Real Case ◽  
Computation Model ◽  
System Load ◽  
Connection System

In the condition of large scale wind power connection, the uncertain of the wind power output takes great challenge to the peak regulation. In this paper for some wind power connection system, the influence of wind power connection to the peak regulation was studied by analyzing the system load and the historical real data after the wind power connection. The computation model which evaluates the normal units’ anti- peak adjusting capability was built and the multiply integer program algorithm was used to solve this model. A real case was used to test the exactness and feasibility of the computation model.

The Research of Wasting Wind Power and Methods of its Consumption Based on that of Fuxin

2014 ◽  
Vol 986-987 ◽  
pp. 622-629
Author(s):  
Tian Long Shao ◽  
Jian Zhang ◽  
Xu Nan Zhao
Keyword(s):  
Power System ◽  
Wind Power ◽  
Large Scale ◽  
Clean Energy ◽  
Power Grids ◽  
Grid Structure ◽  
Wind Power Integration

As a kind of renewable clean energy, the constant access of wind power to power grids is bound to have a great impact on the power system. Based on the grid structure in Fuxin, this paper will state the difficulty of peak regulation and the matter of wasting wind power caused by the large-scale wind power integration and put forward some reasonable methods for using the wasting wind power in the heating in winter. The relevant results indicate that capacity of local consumption of wasting wind power can be improved. Under the circumstances, it can be conductive to solve the problem of wasting wind power results from the difficulty of peak regulation as well as inspire the power system planners.

Beneficial role of diurnal smoothing for grid integration of wind power

2021 ◽  
Author(s):  
Anasuya Gangopadhyay ◽  
Ashwin K Seshadri ◽  
Ralf Toumi
Keyword(s):  
Wind Speed ◽  
Wind Power ◽  
Diurnal Cycle ◽  
Power Plants ◽  
Large Scale ◽  
Positive Impact ◽  
Forecast Error ◽  
Wind Generation ◽  
Grid Integration ◽  
Wind Maximum

<p>Smoothing of wind generation variability is important for grid integration of large-scale wind power plants. One approach to achieving smoothing is aggregating wind generation from plants that have uncorrelated or negatively correlated wind speed. It is well known that the wind speed correlation on average decays with increasing distance between plants, but the correlations may not be explained by distance alone. In India, the wind speed diurnal cycle plays a significant role in explaining the hourly correlation of wind speed between location pairs. This creates an opportunity of “diurnal smoothing”. At a given separation distance the hourly wind speeds correlation is reduced for those pairs that have a difference of +/- 12 hours in local time of wind maximum. This effect is more prominent for location pairs separated by 200 km or more and where the amplitude of the diurnal cycle is more than about  0.5 m/s. “Diurnal smoothing” also has a positive impact on the aggregate wind predictability and forecast error. “Diurnal smoothing” could also be important for other regions with diurnal wind speed cycles.</p>

The Influence on Reactive Voltage of Large Scale Wind Power Connected to Grid

2013 ◽  
Vol 380-384 ◽  
pp. 2972-2976
Author(s):  
Xiang Yu Lv ◽  
Tian Dong ◽  
Ye Yuan ◽  
De Xin Li ◽  
Xiao Juan Han
Keyword(s):  
Power System ◽  
Wind Power ◽  
Influencing Factors ◽  
Large Scale ◽  
Reactive Power ◽  
Wind Power Integration ◽  
Power Fluctuations ◽  
The Impact

Large scale wind power integration has influenced the safety of power system. Taking wind power integration in Jilin as example, the paper describes the influencing factors of large scale wind power integration on reactive power of the grid in detail firstly, then analyze the reactive voltage in four typical ways, and discuss the impact of the wind power fluctuations on the grid reactive voltage.

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