Model conversion proposal from mechanical-electrical transient to electromagnetic transient and implementation method

Abstract

The invention relates to a model conversion proposal from mechanical-electrical transient to electromagnetic transient and an implementation method to realize simulated electric fence model conversion from mechanical-electrical transient to electromagnetic transient, in particular to an electric fence model conversion proposal and an implementation method based on mechanical-electrical transient simulation tool BPA to electromagnetic transient simulation tool PSCAD / EMTDC. According to incidence matrix of graph theory and depth first search theory, the method generates node branch incidence matrix based on the electric fence structure of BPA data documents, and determines the sequence of electric fence branch nodes by carrying out depth first search and combining the node branch incidence matrix until a complete branch of the electric fence structure is searched. According to the searched node sequence, the node branch incidence matrix is adjusted, and according to the new incidence matrix after adjustment, nodes, loads, branches and other electric elements are added until the reconstruction of all nodes and branches is completed and a new network model structure under the electromagnetic transient simulation tool PSCAD / EMTDC is formed. The network model structure has the same network topology as the electric fence structure of the original BPA data documents, and the parameters of all elements remain consistent.

Description

technical field [0001] The invention relates to a model transformation scheme and a realization method from an electromechanical transient state to an electromagnetic transient state, and realizes the transformation from an electromechanical transient state to an electromagnetic transient state power grid simulation model. In particular, a power grid model conversion scheme and implementation method from an electromechanical transient simulation tool BPA to an electromagnetic transient simulation tool PSCAD / EMTDC. The invention is an innovative scheme and a realization method for simplifying the modeling process between different simulation technologies and simulation tools, and improving the simulation accuracy. More specifically, the present invention rationally arranges the order of each node of the system according to the correlation matrix of graph theory and the depth-first search theory, and completes the model conversion from the power grid system data of the electrome...

AI Technical Summary

Problems solved by technology

[0004] In my country, the simulation of the AC system is generally carried out in the electromechanical transient BPA environment, and all the grid data are suitable for the BPA environment. This data file cannot be used in the electromagnetic transient PSCAD / EMTDC. The usual practice is based on The network topology and component parameters of electromechanical transient BPA data files are manually remodeled in electromagnetic transient PSCAD / EMTDC, which not only wastes time, but also in the modeling process, because the component model structure and parameters in BPA are different from those in PSCAD / EMTDC The component model structure and parameters in EMTDC are not exactly the same, so on the one hand, there are data correspondence problems in the process of remodeling, and on the other hand, some errors may occur due to human reasons when the number of network nodes, branches and components is relatively large. At present, there is no relevant research or mature scheme and implementation method for converting electromechanical transient network data to electromagnetic transient in China.

Images