Security and Stability Analysis of Wind Farms Integration into Distribution Network

[摘要] With the increasing share of the wind power in the power system, wind power fluctuations will cause obvious negative impacts on weak local grid. This paper firstly establish electromechanical transient simulation model for doubly fed induction wind turbine, then use Matlab/Simulink to achieve power flow calculation and transient simulation of power system including wind farms, the local synchronous generator, load, etc, finally analyze wind power on the impact of the local power grid under typical circumstances. The actual calculated results indicate that wind mutation causes little effect on the power grid, but when the three-phase short circuit fault happens, active power of wind power decreases sharply and the voltage of location of wind power into the grid also drop sharply, finally wind farm split from power system. This situation is not conducive to security and stability of the local power grid. It is necessary to develop security and stability measures in the future.

[发布机构] State Grid Shandong Electric Power Research Institute, Jinan, Shandong; 250002, China^1;Shandong University of Technology, College of Electric and Electric Engineer, Zibo; 255022, China^2;Shandong University of Technology, School of Transportation and Vehicle Engineering, Shandong, China^3

[效力级别] 电工学

[关键词] Doubly-fed inductions;Electromechanical transient simulation;MATLAB /simulink;Power flow calculations;Power fluctuations;Security and stability;Three-phase short circuit faults;Transient simulation