Power Training-oriented Virtual Simulation Theory And Application

The training is one of the important means to improve the quality of power system operators and ensure the safe and ensure of power system. Due to the special nature of the power system, it is difficult to do personnel training in the actual operation of the system. Therefore It has important practical significance to develop simulation training systems that are similar to the actual power system operating conditions to implement the power system staff trainings. Moreover, with the development of computer virtual reality technology and the rapid promotion of computer hardware data processing capabilities, developing the VR simulation training systems having the characteristics of human-computer three-dimensional interaction has become concerned hot spots and trends in the field of power training simulation. VR Simulation as a new simulation form introduced to power system training simulation generates new research questions of modeling methods, credibility assessment, etc. in the theory field and of simulation development tools and simulation application development technology in the application field. Therefore, this thesis does the systematic and in-depth study of relevant issues with the study topic of Power Training-oriented Virtual Simulation Theory and Application.The main content and innovation of this study are summarized as follows:1. Studying the flexible construction method of the power virtual simulation operation model, and a multi-layer combination model of virtual operation process is put forward.Aiming to the characteristics of layered combination of the actual power operating process operating activities and operating behavior, the three-layer description framework including of the task layer, operation layer and device layer model of virtual simulation operation model is put forward basing on abstract description of the operator cognitive processes and operation execution. And according to the difference of operating objects described and their interaction relationship of each layer model, the specific modeling method of each layers is studied. Eventually a hierarchical modeling methods suitable for flexible construction of virtual simulation operation process model and mixed the behavior and process described method of operating logic function, EN network and Finite Automata Machine. This method makes the abstract and construction of the control and response logic of the power virtual simulation operation process have the feature of hierarchy and decomposability. According to the changing of simulation application, the operation process model can be rapidly constructed through the combination of the different levels of model and the their flexible suitability and reusability are enhanced.2. The evaluation method of power virtual simulation training system simulation credibility based on the extension AHP and Normal Cloud Matter Element is put forward.The method uses the extension AHP to calculate the weight of evaluation index, solves the a fuzzy representation of expert judgment during constructing the judgment matrix, and effectively reduces the effect of expert subjectivity on weight. It combines the solving of weight vector and its consistency testing process to make the evaluation calculation process simplified. The introduction of the Normal Cloud Matter Element solves the problem that qualitative concept of power virtual simulation training system simulation credibility evaluation index is difficult to be quantified, The statistical properties of probability distribution of the Normal Cloud model weakens the impact of subjectivity of evaluated value in the assessment process, so that makes the overall results of the evaluation more objective. The assessment to the simulation credibility of PDGPOSTS proves the feasibility of the method put forward.3. the power virtual simulation training process model is put forward based on the experiential gaming modelThe model is based on experiential learning process characteristics, considers the student’s own cognitive rules and divides the training process into four links of task definition and selection, task study planning, simulation operation experience and learning results evaluation. Combined with the assessment of students learning cognitive level of operating skills, The training process model can guide the students to learn effectively. And the division of training process in the model considers students cognitive law and the virtual simulation training form characteristics and the model can be used to guide application developers to coordinate the design and organization of simulation and training functions of system to make training effect of simulation training system better. According to the requirement of the training model construction, the cognitive level of students operating skills evaluation method based on Grey definite weighted functions Clustering is put forward.4. The3D interactive simulation development platform for the power training named PowerX is studied and developed.Basing on the XNA Framework, the general functions of power virtual simulation training system including visual simulation,3D interaction, operation logic control and electrical simulation interface and etc. are be abstracted and modulated and the flexible modeling of virtual operation process is lead into PowerX. So the PowerX has the core functions of a large scale scene rendering, flexible man-machine interaction and complicated logical control of operating process that demanded by the function development of power virtual simulation training system. Therefore, PowerX can effectively simplify development difficulty and workload of the application system. Distribution operation simulation training system as a development example proves PowerX plays an important role to accelerate the progress of system development, optimize the system architecture, and improve the stability and scalability of power training simulator.5. Power Distribution Grid Production and Operation Simulation Training System (PDGPOSTS) aiming at the operation skills training of power distribution operators is developed. The realization of this system is domestic initiative.PDGPOSTS is the first full three-dimensional comprehensive simulation training system for the distribution network operators, concentrating the distribution operation, maintenance and test operation skills training.