An Analysis Method of Power Grid Fault Current Impulse Topology Diagram

Abstract

The invention discloses an analyzing method of a grid fault current shock topological graph. The method comprises the following steps that 1, wiring diagram information and real-time status information of plant stations and primary equipment in all transformer substations are obtained; 2, topology is conducted on the intra-station primary equipment from the position of a breakdown switch in one transformer substation by means of a tree graph algorithm according to the wiring diagram information and the real-time status information, and then topology is conducted from intra-station to the side transformer substations till topology of all the transformer substations is completed; 3, a tree graph formed through topology is output to be the grid fault current shock topological graph in a tree mode by the shortest path. According to the analyzing method of the grid fault current shock topological graph, a shock path of a fault current to a main grid at the fault occurring moment is vividly shown in a grid fault current shock topological graph mode, and an accurate calculation basis is provided for the quantitative research aspect of fault current cumulative shock.

Description

Technical field [0001] The invention relates to a dynamic topology analysis method for calculating the fault inrush current of a power grid, and belongs to the technical field of power grid fault analysis. Background technique [0002] With the continuous development of the power system, the scale of the power grid continues to expand, and the wiring methods are becoming more and more complex. There are more and more secondary devices such as various protections and fault recorders put into the power grid, and their functions are becoming more and more advanced. It provides richer and more comprehensive grid operation data and information, and brings a huge technological innovation to the secondary system of the substation. At the same time, with the establishment of power data networks at all levels and the in-depth application of network communication technology in the power system, it has become a reality for the dispatch center to obtain various grid operation information in ...

AI Technical Summary

Problems solved by technology

The reliable operation of power grid equipment will directly affect the safety and reliability of the power system. The failure of power grid equipment will often lead to the occurrence of vicious accidents, seriously affect the normal operation of the power system, cause property losses, and even personal accidents

[0003] When a short-circuit fault occurs in the power grid, the penetrating short-circuit current flowing through the equipment may have a certain impact on the equipment, and the cumulative effect of long-term multiple times will have a greater impact on the equipment

However, there is currently no effective quantitative analysis system for the cumulative effect of short-circuit current.

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