Research On Source-Load Distributed Cooperative Optimized Operation Of Active Distribution Network

Aiming at the problems of changing network topology,large amount of communication information,and difficulty in centralized calculation in the renewable energy high-penetration active distribution network dispatching operation,a multi-agent based distributed source-load coordinated control method of the distribution network was proposed.With the goal of maximizing the benefits of renewable energy and active load operation in the active distribution network,a coordinated operation model was established.Besides,a consistent coordination algorithm for distributed solution was adoptedFirstly,the basic theory of graph theory and the first-order consensus algorithm in the consensus algorithm were introduced in this paper,which contain the consistency protocol based on continuous time,the consistency protocol based on discrete time,the consistency protocol based on switching topology,and time lag consistency agreement,consistency filtering.Moreover,the rule of equal consumption and slight increase rate were introduced in this paper,which laid the foundation for the full text research work.Secondly,the source-load of the active distribution network was modeled,and the consistency variables were extracted based on this model.Furthermore,a first-order discrete consistency algorithm was proposed,which was improved based on the importance of the nodes.The noise interference and "plug and play" were also introduced to modify the algorithm.The distributed consistency algorithm of "power adjustment term" was introduced,which eliminated the need for statistics of intelligent nodes in the entire distribution network and detected the shortage of active power in the distribution network in real time to provide a feasible idea for optimal operation.Because the distributed adjustment algorithm with gain adjustment function has uniform mean square convergence,the distributed coordination algorithm of the active distribution network effectively avoids the reality of possible measurement errors,communication channel interference,and communication data transmission delays in communication.An improved state transition matrix based on the importance of nodes can reduce the convergence time of the algorithm and improve the response speed of the distributed coordination method for active distribution networks.If the operating conditions change,the active power of the active distribution network can quickly reach equilibrium.Finally,starting from the conventional model of price-type and incentive-type demand response,a mathematical model considering the uncertainty of price-type demand response and incentive-type demand response was established to analyze its uncertainty.The mathematical model of demand response uncertainty and related constraints were introduced.And the algorithm proposed in Chapter 3 was used for optimal scheduling.Considering 5 scenarios separately,analyzing the optimal scheduling in different scenarios,verifying the effectiveness of the algorithm proposed in Chapter 3,and also verifying the correctness of the model established in this paper,the introduction of demand response factors for active allocation positive impact of grid optimization dispatch was proved.