Auxiliary grid fault analysis system

Abstract

The invention discloses an auxiliary grid fault analysis system. The auxiliary grid fault analysis system comprises a main control module, wherein the main control module is connected with a plurality of paths of voltage input modules, a plurality of paths of current input modules, a plurality of switching value input modules, a high-capacity storage module, a human-computer interface, an external communication module and an auxiliary grid fault analysis system knowledge base; the three-phase voltage, the three-phase current waveform, the effective value, the period and the frequency are displayed in real time, and the single-phase or three-phase reactive power value, the active power value and the apparent power value are displayed in real time; one to eight alternating quantities are randomly selected from all alternating analog quantity channels, and the phasor diagrams are displayed; the first phasor phase fixedly serves as the reference, other phasors are based on the first phasor phase, drawing is carried out according to the phase corresponding to the reference phasor, and the effective value and the phase angle of the phasors are displayed; the positive sequence effective value, the positive sequence phase angle, the negative sequence effective value, the negative sequence phase angle, the zero sequence effective value and the zero sequence phase angle can be displayed in real time according to three-phase voltage or three-phase current, and the auxiliary grid fault analysis system has two harmonic analysis modes.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to an auxiliary analysis system for power grid faults. Background technique [0002] The power system put into operation requires long-term stable work, but it covers a wide area and operates under harsh conditions. There are countless power generation, transmission, power consumption and other equipment in the system, and various faults will inevitably occur in various equipment during operation . In the fault analysis, the staff need detailed data to analyze the cause of the fault, so the parameter monitoring of the power system becomes an important work. [0003] At present, relevant fault recording equipment already exists in the market, but the function is single, and the analysis of the cause of the fault of the system is insufficient. After the fault occurs, the equipment does not have enough auxiliary function for the fault analysis of the staff, so it cannot well me...

AI Technical Summary

Problems solved by technology

Automatic detection of faults in the power grid effectively solves the problem of high maintenance work intensity caused by manual detection of power grid faults in the prior art

However, its single function cannot meet the needs of maintenance personnel for auxiliary analysis of power grid faults

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