Research On Energy/Information Exchange Station In Honeycomb Distribution Network

As an important part of the power system,the distribution network plays a key role in connecting power transmission and usage.However,in the present situation of China’s distribution network,due to the low automation degree and the backward grid structure and the increase penetration of distributed generation,problems such as reduced reliability,high network loss,and difficulty in positioning faults have emerged.At the same time,due to the proposal and application of DC distribution network,the broad development prospects of distributed,miniaturized and modular power supplies,the topology and operation mode of the distribution network will change significantly in the future.This paper proposes a new distribution network structure—the Honeycomb Distribution Network.The first chapter of this paper details the current status and development trends of the distribution network.The second chapter focuses on the topology of the Honeycomb Distribution Network,describes its composition and operation mode,analyzes the characteristics and advantages of the Honeycomb Distribution Network,and proposes the relevant expansion and deformation structure of the Honeycomb Distribution Network.The third chapter studies the Energy/Information Exchange Station in the Honeycomb Distribution Network.Firstly,the topology and its composition of the Energy/Information Exchange Station are described.Then,the classification of the energy storage module and the storage capacity are analyzed.The converter topology is selected and the corresponding mathematical model is established.Finally,the Energy/Information Exchange Station is compared with the Energy Router.In the fourth chapter,for the microgrid in the Honeycomb Distribution Network,different power shortage estimation methods are proposed according to its AC and DC form and control strategy.At the same time,the control strategy for microgrid fault judgment and processing is proposed.The fifth chapter divides the Energy/Information Exchange Station control strategy into three layers—the decision-making layer,the converter layer and the valve group layer.The Energy/Information Exchange Station model is built on MATLAB/Simulink according to the control strategy.The simulation results verity the effectiveness of the three-layer control strategy.