The Research And Development Of Digital Substation Integrated Control System On The Basis Of Knowledge Visualization

The research level of digitalized intelligentized substation in our countr-y has played a leading role in the world. Many areas in China have carried out experimental units and modification works of digitalized intelligentized substation. However, many issues need further study to be solved. This thesis deals with issues such as various application systems of present digitalized substation, isolated information resources, blurred monitoring menu, complex data query and pivot, etc. Using the advanced hardware information data acquisition and transmission system obtained from Shanxi certain110kV digitalized intelligentized substation experimental unit, and through the development and research of unified information platform supervisory system oriented with Service-Oriented Architecture (SOA), this thesis aims at setting up fault analytical data model based on Root Cause Analysis (RCA) of relation database to construct new type of integrated digitalized substation’s monitoring system, from the start of the study of disperse system’s integration and visualization effect, so as to realize visual control of digitalized substation.This thesis has made achievements on the following three aspects.a) Establish digitalized transformer substation’s integrated information monitoring platform system which is based on SOA. To solve issues like poor visualization of traditional substation monitoring system, the disunity of communication standards, message processing in disorder and other proble-ms, researcher raises integrated monitoring system consisted of SOA on the basis of digitalized substation. The development of modularized component lower the development cost, but it enhances the develop efficiency of soft-ware, improving staffs’operating effiency in dimensional work. This frame-work is the whole visual structure of substation, meanwhile it solves various problems caused by "isolated information island" at the digitalized substat-ion station layer.b) Set up RCA data model on the basis of relational database. Due to the advantages of digitalized substation in communication transmission, the data of digitalized substation becomes more detailed. If there is no good physical model with open-loop data, a great number of valid data will be wasted and become data redundancy which may lead to the drop of system operation speed. This thesis will be widely used in RCA data model in space and relational database in digitalized substation, creating an "umbrella-like" open-loop database model, which makes the prediction of real-time fault of electric installation in substation become possible. The development of this function is an important precondition of the result of visualization in information mining, as well as a core way of information processing to realize knowledge visualization.c) Study and put forward three-dimensional, panoramic visualization monitoring interface. On the premise of existing two-dimensional monitori-ng image, this thesis raises the development of three-dimensional panorama monitoring image. This three-dimensional dynamic technology adopts a different model in which two-dimension reflects three-dimension, on the model of three-dimensional pels entity to establish virtual three-dimensional model to demonstrate real-time information of substation vividly, richly and accurately. Through OpenGL programming languages and three-dimensional S max editing software, three-dimensional pels of electrical equipment are established, thus providing support for staff working in the secondary development. Meanwhile, the "high-speed" browsing model makes the view of three-dimensional panorama monitoring menu more convenient and fluent to achieve the goal of cooperating with two-dimensional monitoring menu. This model is not only specific expression vector of knowledge visualization, but also knowledge visualization’s end of expression.This article starts with digitalized substation. Then through introducing knowledge visualization and realization of digitalized substation’s visualizet-ion function, make configuration software and VS platform as the main primary and secondary development platform. Finally, by means of relational database (eg. SQL), it mixes together with failure prediction model which is set up by Power Designer to realize monitoring system’s system integration and knowledge visualization of knowledge in digitalized substation. This integration monitoring system of digitalized substation has provided soft-ware support for the collaboration between digitalized substation and new type of smart grid dispatching system, and plays an important role in keeping the distribution network operating safely, reliably and economically.