Automatic positioning method of positioning system for electric energy quality disturbance source

Abstract

The invention relates to an automatic positioning method of a positioning system for an electric energy quality disturbance source. The positioning system comprises an electric energy quality management master station and electric energy quality online monitoring devices connected with the master station through the Ethernet. One electric energy quality online monitoring device is arranged at eachmonitoring point of an electric transmission line of a radiation type power distribution system, and the electric energy quality online monitoring devices are connected through the Ethernet; when anactual disturbance event occurs in the system, after the electric energy quality online monitoring devices detect the disturbance event, the moment when the disturbance source occurs can be recorded,and other electric energy quality online monitoring devices in the internet are informed in a broadcasting mode through the Ethernet to start a disturbance wave recording system by adopting the momentas the reference, sampling data of previous N cyclic waves and later N cyclic waves before the moment is recorded and sent to the electric energy quality management master station in real time, a system coverage matrix and a system direction matrix are built through cooperation among the electric energy quality online monitoring devices, and then the disturbance source is positioned.

Description

[0001] This application is an application number: 201510097288.3, ​​the title of the invention is "A Power Quality Disturbance Source Location System and Location Method", and the application date is: March 4, 2015. The divisional application of the invention patent application. technical field [0002] The invention relates to the field of on-line monitoring of power quality pollution sources, in particular to a positioning system and a positioning method for power quality disturbance sources in a power grid. Background technique [0003] In recent years, with the rapid development of the economy, the power load has grown rapidly, and the power load has become increasingly complex and diversified. More and more non-linear, impactful, unbalanced and harmonic-rich application equipment have been connected to the power grid one after another. Different degrees affect the power quality of the power grid. Coupled with imperfect monitoring methods, operation, external interferenc...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is necessary to rely on manual comparison to locate the disturbance source, and the work efficiency is low.

The disadvantage of this method is that it can only determine the front and rear directions of the disturbance source relative to the monitoring point, and when a power quality event occurs in the power network, it cannot really realize the precise location of the disturbance source (such as locating to a specific line). ), establish a disturbance source location optimization model, and use genetic algorithm to further increase the calculation and storage capacity of the power quality on-line monitoring device

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