Research on the Maximum Injected Power of Wind Power Plants Considering Grid-Connected Distributed Generation
The power injected by wind power plants will change the power flow distribution of the power grid,affect the node voltage of the local power grid,and thus has a greater impact on the stability and reliability of the power grid operation.Therefore,to improve the safety and reliability of wind power plants connected to the grid,this paper studies the maximum injection power of wind power plants considering the integration of distributed generation with the grid.The mathematical models of permanent magnet synchronous generator,diode rectifier and DC/DC converter in the wind power plant are established considering grid-connected distributed generation.Based on the established mathematical model,the Weibull distribution function is used to express the wind speed in the wind power plant,and determine the relationship between the wind speed and the output power of the wind turbine.The maximum wind power that can be received by the distribution network is set as the optimization objective of the maximum injected power,and the objective function of the maximum injected power of the wind power station is established according to the chance-constrained programming issue,and the genetic algorithm is used to solve the objective function of the maximum injected power of the wind power station to output the maximum injected power of the wind power station.The experimental results show that the designed method proposed in this paper can determine the maximum injection power of wind power plants with different load changes,capacitor compensation capacity and wind speed changes.
distributed power generationgrid-connectedwind power stationmaximum injected powerdistribution functionwind turbine
万方数据
维普
