A power grid voltage sag source location system

Abstract

The present invention provides a network voltage sag source positioning system. The system comprises a data parsing and synchronizing module, a data storage module, a stationing scheme generating module, a sag source positioning and calculating module, an application program interface module and a human-computer interface module, wherein the data parsing and synchronizing module, the stationing scheme generating module, the sag source positioning and calculating module, the application program interface module and the human-computer interface module are respectively in two-way connection with the data storage module, and data interaction is performed through the data storage module. According to the network voltage sag source positioning system, voltage sag data, a network topological structure and network parameters are read respectively from an electric energy quality monitoring system or monitoring terminal and a power data SCADA system, the positioning function is achieved through a sag source positioning algorithm, the positioning result can be used by electric power quality analysis personnel, and the positioning result can also be used for fault analysis and diagnosis and the like through interconnection and interflow of a power distribution automation system or a scheduling system.

Description

technical field [0001] The invention relates to a positioning system, in particular to a grid voltage sag source positioning system. Background technique [0002] Voltage sag refers to a short-term voltage fluctuation phenomenon in which the root mean square value of a node in the power supply system decreases to between 0.1 p.u and 0.9 p.u. and lasts for 10 ms to 1 min under power frequency conditions. Because voltage sag will cause damage to computer systems, precision instrument production and other sensitive equipment systems that cannot work normally or even shut down, the problem of voltage sag has become one of the most important power quality problems. [0003] At present, the power quality monitoring system based on the power quality monitoring terminal has been widely used. The power quality monitoring terminal has the characteristics of rich collection information and large amount of data. After fully mining and analyzing the monitoring data, it can be widely use...

AI Technical Summary

Problems solved by technology

Because voltage sag will cause damage to computer systems, precision instrument production and other sensitive equipment systems that cannot work normally or even shut down, the problem of voltage sag has become one of the most important power quality problems

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