| With the social and economic development in China,the scale of urban distribution network continues to expand.As the terminal of the power supply network for users,whether the production and management of the distribution network is safely and stably maintained will directly affect the daily production and living order of our society.The feeder single-line diagram,which are the basic power graphics,is an important data resource and tool for managing distribution network production,and can provide strong support for various grid services.The current feeder single-line diagram shows the actual physical structure of the power grid line.It will display most of the devices and lines under the feeder,and the user can clearly view the internal connections among the devices.However,with the growth,changes,and refined management of the distribution network,the feeder single-line diagram has become insufficient to meet the needs of distribution network planning,scheduling,line loss management and other services,to be more specific,the needs of quickly discovering the connections between important devices and the general network structure.Considering both the drawing principles of power graphics along with legibility and aesthetics and the deficiencies in the feeder single-line diagram,we argue that the design and implementation of a new kind of power graphics are necessary and feasible in practice.To address the discussed issues,this thesis proposed the visualization of a new power diagram based on Cytoscape.js for the topology of feeds in the distribution network.This new diagram will not show the detailed structure among devices in the distribution network,but pay more attention to its logical connection between important devices to help users quickly and intuitively view the overall structure of the feeders.By reorganizing the feeder data,the devices are abstracted into simple nodes,the connections between devices are modified,non-essential devices are hidden,and the automatic layout of the gravitational repulsion algorithm is used instead of the previous manual drawing to achieve the required evenly layout of the feeder topology.The proposed feeder topology diagram can not only display the graphics of the logical structure of the important devices of the feeders,but also meet the requirements of the readability and aesthetics of the power graphics.To further simplify the feeder devices,we make further improvements to hide different devices separately and generate a three-tier abstracted path for the feeder topology.The three-tier path is then used to generate the identifications of different versions of topology diagrams,which is convenient for users to trace the historical versions of the feeders and to locate the changes between different versions.Finally,with the help of the Cytoscape.js plug-in,which has powerful functions in displaying and interacting network topologies,we effectively implement the visualization of feeder topology diagrams,including a series of interactive functions on the visualized topology diagrams to help improve the efficiency of the users.This thesis analyzes and introduces the development of both domestic and foreign grid power graphics.This thesis also introduces the framework and technologies used by each module of the system and the reasons why choosing them.It describes an overview of power graphics for the distribution network,the CIM model,Cytoscape.js,etc.Furthermore,this thesis has carried out detailed requirement analysis,the overall design for each module of the proposed system,and the concrete implementation of each module of the system in detail.Our proposed system uses Spring Boot to implement the back-end modules,uses the Vue framework to implement the front-end pages,and implements the topology diagram visualization based on the Cytoscape.js plug-in.The system mainly includes two functional modules: the module of feeder data acquisition and preprocessing module,and the module of feeder topology diagram visualization.At present,the system has been put into practice in the medium-voltage negative loss management project.The visualized feeder topology diagram is clear and impressive,and indeed helps the users by improving the efficiency of daily production management. |
