On-line static security analysis method based on topological comparison

Abstract

The invention provides an on-line static security analysis method based on topological comparison, and belongs to the technical field of computing of a power system. On the basis that the topological structure of a section is not changed, a factor table under a ground state section and inverse matrix information used in quick fault filtration for direct current tide are fully used; and under the condition that the topological structure of the section is changed, the factor table is corrected through partial topological analysis and a partial factor correction technology, and the on-line static security analysis method is provided on this basis. By the on-line static security analysis method, the static security analysis computing speed is increased; based on the change characteristic of the topological structure of an on-line system, on-line static security analysis is performed by fully using a measure combining topological comparison, process value reuse and partial topological analysis; the load rate of a computing server is reduced; and the scanning speed of the current section and a reusable section is increased.

Description

technical field [0001] The invention belongs to the field of power system calculation, and in particular relates to an online static security analysis method based on topology comparison Background technique [0002] The static security analysis of online operation scans the entire network for expected faults according to the set period or event trigger mode. The basic process is: first, through the general data interface IEC61970 standard (CIM / XML) or the domestic power dispatch general data specification (E language) Obtain the whole network model and real-time operation mode data, and generate the expected fault set to be scanned; then use the DC power flow algorithm to calculate the approximate power flow solution under the fault, and screen out the suspicious fault set that may cause the equipment to exceed the limit; finally, make a detailed analysis of the suspicious fault set Analysis, that is, to calculate the AC power flow on the section after the fault and obtain ...

AI Technical Summary

Problems solved by technology

[0004] At present, the network analysis application software of the dispatching system above the provincial level has the function of static security analysis. Through the static security analysis, it can be determined whether the power grid will cause the equipment to exceed the limit under the expected accidents such as line tripping in the current operation mode, so as to discover the safety hazards of the power grid operation.

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