Data integration method for relay protection setting calculation

Abstract

The invention provides a data integration method for relay protection setting calculation, which comprises the following steps of: determining whether an export mode selected by a provincial power grid is complete export or not, if so, selecting graphical topology parameters and primary parameters of the provincial power grid; determining an export range selected by the provincial power grid is export all or not, if so, selecting all stations and lines of the provincial power grid; exporting the selected export mode and the export range as an XML (Extensible Markup Language) format file, and transmitting the XML format file to a network board dispatch center; and selecting the file needing to be imported from the XML format file, and determining whether the selected XML format file needs to be imported in a matching manner. The data integration method provided by the invention imports a database used by province dispatch setting calculation to a network dispatching database, realizes the distribution and maintenance of the setting calculation data, and centralized sharing, and effectively reduces the workload of data interaction.

Description

technical field [0001] The invention belongs to the technical field of electric power system relay protection, and in particular relates to a data integration method for relay protection setting calculation. Background technique [0002] The correct implementation of relay protection setting calculation work is an important basic work to ensure the safe and stable operation of the power grid. In recent years, great progress has been made in the automation of large-scale power grid relay protection setting calculation work. (referred to as network dispatching center) and network provincial dispatching center (abbreviated as provincial dispatching center) exchange of relay protection setting calculation parameters still adopts the method of system equivalence, that is, network dispatching and provincial dispatching exchange respectively with each other the multi-point equivalent value of the power grid within the scope of their regulation parameter. [0003] However, with the...

AI Technical Summary

Problems solved by technology

[0003] However, with the continuous expansion of the scale of the power grid, according to the current mode of unified dispatching and hierarchical management, there are more and more demarcation points in the scope of regulation and control of the grid provincial dispatcher, and the network equipment parameters required for setting and calculation are exchanged between the grid provincial dispatchers, There are more and more data such as equivalent impedance and coordination setting, and the disadvantages of continuing to use the traditional equivalent parameter exchange method are becoming more and more obvious: on the one hand, with the rapid development of power grid construction, the connection between grid and provincial adjustments is getting closer , the system equivalence cut-off point is also constantly adjusted, and the equivalence calculation and entry of equivalence parameters are becoming more and more complicated

On the other hand, the equivalent parameters exchanged between the grid and provincial commissioners are calculated based on the maximum and minimum operating modes of the system in the current or next year, which makes it difficult for the equivalent parameters to fully match the actual system operating conditions, especially It is difficult to cover some extreme operation modes, and these errors may cause the setting calculation results to fail to consider the most extreme operation mode, resulting in hidden dangers of protection malfunction or refusal

Images