Substation Simulation Parallel Computing

As a training tool for operators and equipment repairmen, the SimulationSubstation for Training has been widely applied in power supply departments and thesubstation maintenance course in universities. The biggest characteristic of the systemis the working environment, which is the same as or highly similar to that of a realsubstation. It can reflect the running states and set all kinds of fault. When necessary,trainees are able to operate secondary equipment so as to achieve the trainingrequirements for projects such as trouble removal and brake handle.On the basis of the principle that a simulation substation is consistent with a realone as far as possible and real substation equipment is most likely to be used, thispaper mainly concerns a simulation substation for training system, which adopts asystem by digital simulation, all secondary equipment by real system protectionequipment and automatic device digital physical hybrid type. The specific contentsare as follows:1.Based on the function and performance requirements of the substationsimulation training system, the overall design scheme was put forward. First ordersystem uses digital simulation. Through the calculation of real-time solver, real-timerepresentation of the various parameters of the prototype substation is completed.Because the training system tries to close to production line, the secondary systemadopts a real physical system to present the real working environment in thesubstation. In order to match the output by a system calculation with required data bya secondary system, a few-exchange interfere was designed and the identificationmethod of running state was also discussed.2. Because there are nonlinear components of transformer and arrester, etc., thispaper introduces the basic principle of nonlinear components of linearization, and thebasic principle of differential equation of poor differentiation.3. Based on the substation transformer, power line, power supply, and lightningarrester,the mathematical simulation model was studied. Through the differencemethod,the difference model of each component and that of a system wereestablished. And using the method of Berry RON a system model was divided into thesupply part, on-site model and load model.4. According to the characteristics of equations by system models, the use of thebasic knowledge of sparse matrix and the basic concept of undirected graph, and alsoaccording to the minimum degree method and maximum independent set method, anew approach was pioneered that reasonably reduces the computational complexityduring the process of solving equations, and decreases the amount of informationinteraction in the parallel computing.