Visualization Research On Secondary Circuit Of Intelligent Substation

The power grid has gradually entered a new stage of intelligent development of information.As the core of the power system,substation began to change to unmanned operation mode,and making the fundamental changes of substation secondary circuit.With the gradual application of intelligent substation,optical fiber communication network which can carry large-capacity data of optical digital signal replaces the traditional cable wiring.The multi-path SV / GOOSE signal is transmitted in each fiber,which simplifies the structure of the control circuit.At the same time,the secondary circuit of the substation becomes "invisible",which brings new challenges to the maintenance work.In this paper,the secondary circuit of the intelligent substation is taken as the research object.Firstly,the structural information of the secondary circuit of the substation is described.By analyzing the superiority of the secondary circuit of the intelligent substation and combining with the practical operation requirements of the commissioning operation and maintenance work,the difficulty of visualizing the secondary circuit of intelligent substation is illustrated.Secondly,based on IEC61850 standard,PC as the hardware platform and Qt as the software platform,a cross-platform system is developed,with a graphical interface of the intelligent substation secondary circuit visualization.By extracting the configuration between the devices,the system visualizes the GOOSE / SV signal transmission which the devices subscribe to each other,extracts the secondary circuit information in the substation configuration description file,converts the text mode into the graphics mode,can contrast and visualize the difference between the secondary circuit and export the file.Finally,through the analysis of specific methods of intelligent substation secondary circuit visualization,this paper achieves in the debugging and maintenance process of "accurate,visualization,rapid",solves the problem that the traditional test methods and equipment can not be directly used to debug and test the secondary circuit,simplifies the diagnosis of complex faults in engineering implementation and maintenance,which makes the operating threshold of the staff effectively reduced,the working efficiency of the staff improved,and the cost reduced.