The Coordinated Control Of Building Micro-Grid Based On Demand Response

In recent years,with the rapid development of sensing,communication and Internet of Things technologies and the improvement of urbanization,various intelligent buildings and green buildings have emerged in an endless stream.In the environment of strong smart grid and ubiquitous electric Internet of things,As an important part of the power grid,the building micro-grid should be developed more prominently in its coordinated control technology.For most of the domestic building micro-grids at this stage,the development of intelligent coordinated control is relatively slow.Power users cannot directly participate in the operation and control of the micro-grid side.The building micro-grid side can not participate in the coordinated control of the grid side.At the same time,in the daily operation of building load,the large load peak-valley difference has a certain impact on the smooth operation of the power grid.In order to solve these problems and achieve the purpose of the research,this article specifically carried out the following work.First,carry out the research on the theoretical part.For the building micro-network model,the micro-grid structure is divided into modules,and corresponding modeling and simulation are carried out.The demand response of building micro grid was systematically analyzed,and the potential of EVS V2 G technology to participate in the coordinated control of building micro grid under the demand response was specifically analyzed.Secondly,taking the time-of-use electricity pricing mechanism under demand response as a means,according to the operation characteristics of each module in the building micro grid built,a coordinated control strategy based on demand response is formulated,and the control mode of each module operation is introduced in detail.Simulink simulation is performed on the coordinated control strategy of building micro-grid based on demand response in grid-connected and isolated states respectively.The feasibility of several working modes of building micro-grid under time-of-use electricity price is verified.Finally,in the Research Center for Intelligent Distribution Network Measurement and Control and Safe Operation Technology of the Experimental Building,the existing equipment is used to build the physical simulation platform of the building micro-grid system.According to the established coordination control strategy of building micro-network,the upper computer platform is built byusing configuration software.Carry out physical simulation experiment and analysis,run the coordinated control strategy,verify the feasibility of the experimental plan and the economy of coordinated control.The results show that the user demand response is adopted in this study to enhance the interaction of users participating in the micro grid coordination control.Simulink simulates several micro-grid operating modes under the time-of-use price mechanism.The simulation verifies the feasibility of the coordinated control strategy of building micro-grid based on demand response.Through the test experiment on the built physical simulation platform,the experimental scheme proves that the coordinated control strategy is feasible and economical at the same time,which is helpful to assist the large power grid to carry out "peak load shifting" and bring certain economic benefits to users.