Optimal Scheduling Of Distributed Generator Based On Complex Power Increment

In order to alleviate the pressure of electric power supply and improve the cleanliness of electric power production,distributed generation resources(DGRs),which mainly consists of new energy power generation,have gained wide support in technology,policy and have gained well development.With the increasing capacity of DGRs access to power grid,the optimal dispatching of power supply needs further study.In the current research,the optimization function model focuses on considering the interests of power or grid,and ignores the integrity of distributed generation resources,distribution network and traditional power supply,from an economic point of view,this is not conducive to long-term and stable operation of the system.The optimization algorithm mainly adopts modern mathematical optimization method or modern intelligent optimization method.The two algorithms have their own characteristics and are widely applied,but the computation speed of the two algorithms still has room for improvement.In view of this situation,the following work has been made in this study.First,consider the output power of distributed generation resources can be adjusted in a certain range,this is because of the popularity of power electronics full controlled power devices,it makes the active power and reactive power output of distributed generation resources have a certain regulation ability,namely through adjusting the trigger angle of power inverter to achieve the desired output power value.Then,considering the influence of distributed generation resources operation to other interests in the establishment of optimization model,that is,set up a comprehensive objective function,considering the profit of distributed generation resources,the operation profit of the distribution network and the traditional power supply,in order to optimize the overall profit of the distributed generation resources,meanwhile,the enthusiasm of the distribution network to accept DGRs and the enthusiasm of the traditional power generation access to the grid can be guaranteed.Finally,the theory of power component and the theory of complex power transmission gain are applied in the process of derivation,the function relationship between the injection power of the slack node and the injection power of other power supply in the steady state can be obtained.According to the conclusion,we can improve the primal dual interior point method,then an improved interior point method based on complex power increment can be proposed,this method can significantly improve the computation speed on the premise of guaranteeing the accuracy of the optimization.At the end of the paper,an example is used to verify the views in the paper,and the correctness of the view is further illustrated.