The influence of wind farm group topology structure on power flow distribution

2015 ◽  
Author(s):  
Yong Yang ◽  
Ming Zhou ◽  
Fei Guo ◽  
Gengyin Li ◽  
Haiqiong Yi
Keyword(s):  
Power Flow ◽  
Wind Farm ◽  
Flow Distribution ◽  
Group Topology ◽  
Topology Structure ◽  
Farm Group

scholarly journals Optimal Power Flow Preventive Control Considering Wind Farm Access

2021 ◽  
Vol 687 (1) ◽  
pp. 012094
Author(s):  
Fan Chen ◽  
Zhiqing Liu ◽  
Jifu Qiu ◽  
Zhipeng Lu ◽  
Ming Chen ◽  
...  
Keyword(s):  
Power Flow ◽  
Optimal Power Flow ◽  
Wind Farm ◽  
Preventive Control ◽  
Optimal Power

Effect of unified power flow controller installation in dual feed induction generator (DFIG) wind turbines

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Asaad Shemshadi ◽  
Pourya Khorampour
Keyword(s):  
Power Flow ◽  
Wind Farm ◽  
Reactive Power ◽  
Wind Farms ◽  
Transient Behavior ◽  
Unified Power Flow Controller ◽  
Voltage Fluctuations ◽  
Flow Controller ◽  
Power Flow Controller ◽  
Sudden Load

Abstract In recent years, the use of wind energy to generate electricity in the world has been accelerating and growing. Wind farms are unstable when dynamic voltage fluctuations occur, especially sudden and sudden changes in load, and show oscillating performance at their output. In this paper, the Unified Power Flow Controller (UPFC) has been simulated and studied by Matlab software to improve the dynamic stability and transient behavior of the wind power plant in the event of sudden load changes. The simulation results show that by controlling the UPFC series inverter, voltage fluctuations in the PCC bus are prevented and the UPFC parallel inverter injects power after changing the load for faster recovery and stability of the PCC bus voltage and thus the stability of the wind farm. The UPFC can control the active and reactive power at the transmission line, and in fact, controls the output of the wind turbine with the generator from both sides to the fluctuations caused by sudden load changes that play a role such as sudden disturbances and oscillating errors. Also, the presence of UPFC in the system reduces power fluctuations.

Containing Wind Farm Power System Probabilistic Optimal Power Flow Calculation Using the Method of Combined Cumulants and Gram-Charlier Expansion

2014 ◽  
Vol 1070-1072 ◽  
pp. 193-199
Author(s):  
Min Jiang Chen ◽  
Yue Qing Chen ◽  
Wang Chao Dong ◽  
Bei Wu
Keyword(s):  
Power System ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Wind Farm ◽  
Synchronous Generator ◽  
Load Flow ◽  
Probabilistic Load Flow ◽  
The Monte Carlo Method ◽  
Probabilistic Load ◽  
Node Voltage

This paper uses the optimal probabilistic load flow method for power containing wind farm analysis. Based on Computation of optimal load flow using the Interior point method ,considering the stochasticlal power output of wind generator and the random outage of synchronous generator and the stochastic of load power, calculating the probability distribution of branch power flow and node voltage. This paper uses RTS-24 as the example to analysis the method ,and comparison the results with that of the Monte-Carlo method, to analysis the change of power system after the grid connected of wind turbine.

scholarly journals Flexibility Evaluation Method of Power Systems with High Proportion Renewable Energy Based on Typical Operation Scenarios

Electronics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 627
Author(s):  
Xiangying Tang ◽  
Yan Hu ◽  
Zhanpeng Chen ◽  
Guangzeng You
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Power System ◽  
Power Flow ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Supply And Demand ◽  
Flow Distribution ◽  
Occurrence Probability ◽  
Flexible Operation

The development of renewable energy represented by wind, photovoltaic and hydropower has increased the uncertainty of power systems. In order to ensure the flexible operation of power systems with a high proportion of renewable energy, it is necessary to establish a multi-scenario power system flexibility evaluation method. First, this study uses a modified k-means algorithm to cluster operating scenarios of renewable energy and load to obtain several typical scenarios. Then, flexibility evaluation indices are proposed from three perspectives, including supply and demand balance of the zone, power flow distribution of the zone and transmission capacity between zones. Next, to calculate the flexibility evaluation indices of each scenario—and according to the occurrence probability of each scenario—we multiplied the indices of each scenario by the scenario occurrence probability to obtain comprehensive evaluation indices of all scenarios. Based on the actual historical output data of renewable energy and load of a southern power system in China, a flexibility evaluation was performed on the modified IEEE 14 system and modified IEEE 39 system. The results show that the proposed clustering method and flexibility indices can effectively reflect the flexibility status of the power system.

Review on Node Modeling Method of Wind Farm in Power Flow Calculation

2013 ◽  
Vol 427-429 ◽  
pp. 412-415
Author(s):  
Jin Long Liu ◽  
Fei Zhao ◽  
Zhi Rui Liang
Keyword(s):  
Mathematical Model ◽  
Power Flow ◽  
Wind Farm ◽  
Wake Effect ◽  
Power Flow Calculation ◽  
Flow Calculation ◽  
Calculation Process ◽  
Asynchronous Generator ◽  
High Level ◽  
Level Calculation

Node modeling of wind farm in power flow calculation is an issue which must be solved. This paper described mathematical model of asynchronous generator which be used widely, elaborated mathematical model and calculation process of several wind farm node models in power flow calculation, discussed calculation speed and accuracy of every model and pointed out that under the premise of high level calculation speed, how to add wake effect to power flow calculation process will be a significant direction for wind farm modeling studies.

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