Research On Optimal Configuration Of Distributed Power Sources In Active Distribution Networks

In recent years,China has begun to vigorously promote the reform measures of electricity marketization,and promote the rapid development of active distribution networks under the relaxation of energy policies.In this paper,when studying distributed renewable energy,wind and solar are the main choice,which accelerates the speed of access to the distribution network,and the increase of potential safety hazards in the operation of the power system.Therefore,the distribution network needs to connect the distributed power source under the premise of the power system permitting,and in-depth exploration of how to connect multiple distributed power sources to the maximum extent on the basis of ensuring the safe operation of the system has become the core of the research on the active distribution network.Therefore,this paper focuses on the optimal configuration technology used in active distribution network and the problem of distributed power access capacity.This paper first introduces in detail the theoretical basis required to optimize the distributed power of active distribution network,mainly optimizing the process of distributed power supply in active distribution network,and provides basic ideas and guiding concepts for it.At the same time,the distributed power generation model,including photovoltaic power generation,wind power generation and micro-gas turbine models,is also summarized.Based on the random uncertainty problem of wind-solar charge itself,the multi-scenario analysis method is proposed,which can transform multiple uncertain scenarios into an accurate scenario,and simplify the calculation process to ensure that the original data used during the planning period are from the real environment.The problems of distributed power connection affecting distribution network voltage,network loss,reliability,power quality,planning distribution network and relay protection were further explored,and then the access capacity of distributed power generation in active distribution network was analyzed.The existing successes are simple in terms of access capacity,and no reasonable plan has been formulated for the active distribution network distributed power to increase access capacity.Therefore,a distributed power access capacity model is established for the active distribution network with different safety constraints,and the net load ratio index is introduced into the judgment of the actual operation status of the distribution network,and it is pointed out that the distributed power access capacity can be significantly increased by combining the active management of wind and solar and complementary configuration.In addition,the effect of this model and various measures is tested by example analysis.Finally,the paper explores the problem of optimizing the distributed power configuration of active distribution network,and constructs a two-layer optimal configuration model of distributed power source with active distribution network and multiple topics.It is proposed to apply the improved adaptive particle swarm frog jump hybrid algorithm to calculate the two-level programming model in the model,and use the example analysis method to test the application effect and design rationality of the model.