A Region Division Method for Large-Scale Power Network Setting Calculation

Abstract

The invention relates to an area division method for large-scale power grid setting calculation. The method includes the following steps: first, set constraints, search the primary model structure of the whole network according to the constraints, and obtain preliminary partition results; second, correct the preliminary partition results to obtain the best partition results; According to the optimal partition results, the intersection information of each region and the detailed grid model of each region are obtained; the fourth is to obtain the boundary equivalent model of each region according to the intersection information of each region and the node impedance matrix of the whole network; the fifth is to obtain the boundary equivalent model of each region according to The detailed grid model and boundary equivalent model of each area are used for setting calculation. The invention not only realizes the accuracy and rationality of the setting calculation results in each partition area and between areas, but also greatly improves the speed and efficiency of the large-scale power grid setting calculation process.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a large-scale power grid setting calculation area division method. Background technique [0002] Setting calculation is the core work of dispatching protection at all levels. With the development of computer technology, the application of computer software technology for relay protection setting and professional management has always been a new emerging technology in recent years. At present, in the process of relay protection setting calculation, usually only the detailed model of the regional power grid is established, and the equivalent model is used to simplify the processing in adjacent regions. In the setting calculation process of the internal nodes in the area, the compensation method is used to calculate the electrical quantity of the fault point, which can usually ensure the rationality of the results. However, there are deficiencies in the setting calculation of...

AI Technical Summary

Problems solved by technology

However, from the perspective of the entire network data center, the order of the matrix that needs to be processed during the setting calculation process will be objective

No matter the sparse admittance matrix or other matrix sparse technology is used for calculation, its scale will be huge, which will lead to long time-consuming and slow speed of setting calculation, which will affect the processing efficiency of setting calculation software

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