Application Of Modular Modeling Methodology For Substation Simulation Training System

To face of rapid development technology of power system and the large simulation of international applications, the simulation as a convenient, safe analysis tools in the scientific fact, is very important. The digital Simulation of Power System is for power system and it is the application of Digital Technology. It is important that a power system model and applying the model to run on analysis and computing of electric power systems. In other words mathematical model is formed by the differential equations and network equations.Firstly, this paper introduces a modeling method of modular and modeling support system GBlink. Modular model is the methods to achieve its solution in the unit of function block programming. Modular program is designed to reduce complexity, simplifying the program design, debugging and maintenance. The paper gives the detailed system architecture and features of support system, and describes its function and role.Secondly, build the mode of the power system's component and network.1.Building power system in modularization model:Power system simulation involves two objects, one is a component, such as:switches, generators, transformers, loads, excitation systems, relay protection and automatic devices, FACTS devices; the other is a calculation of the power network, such as:topology analysis, node optimization, equation solving, etc. Obviously, these two objects are not isolated, but have strong interoperability.2. Algorithm of Power System Mode:Mathematical model related to the selection of algorithm, a algorithm has a significant impact on simulation'rapidity, accuracy, stability. Different algorithms are for different purposes, different algorithms are applied to different objects. Particularly transient in electrical power systems, the time constant of equipment vary greatly, but all stages of transient have not clear dividing line.3. modular implementation of the interface development:Development the interface of modular implementation. Purpose of the study is to provide a modeling method and the model, their results can be directly used for power system simulation or simulation model.Finally, application example of modular method in simulation training system is given. Architecture and development of substation simulation training system process is given.To establish the mathematical model with the modular approach, can greatly reduce the complexity of power system modeling, even if by adding new equipment modules in the future, the expansion of capacity is also very strong.