High-speed train power quality monitoring system

A power quality monitoring and power quality technology, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve problems such as stability and reliability threats

Inactive Publication Date: 2018-09-07
深圳众厉电力科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

These not only adversely affect other equipment in the grid, but also pose a threat to the stability and reliability of its own operation

Method used

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  • High-speed train power quality monitoring system
  • High-speed train power quality monitoring system
  • High-speed train power quality monitoring system

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Embodiment Construction

[0024] The present invention is further described in conjunction with the following examples.

[0025] see figure 1 , figure 2 , a high-speed rail power quality monitoring system provided in this embodiment, including a monitoring unit 1, a data preprocessing unit 2, a normalization unit 3, a clustering unit 4, an outlier detection unit 5, and a power quality database 6; the monitoring unit 1 Obtain the power quality data of the high-speed rail traction station through the online power quality monitor; the data preprocessing unit 2 screens out only one vehicle running on the power supply arm based on the power quality data when there are vehicles running and the running time of the high-speed rail on the power supply arm power quality data, and perform missing complement processing and anomaly detection processing on the power quality data; the normalization unit 3 calculates the running time of a high-speed rail and the statistical value of the power quality index for the p...

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Abstract

The invention provides a high-speed train power quality monitoring system comprising a monitoring unit, a data pre-processing unit, a normalization unit, a clustering unit, an outlier detection unit and a power quality database, wherein the data pre-processing unit screens out power quality data of only one vehicle running on a power supply arm according to power quality data when a vehicle runs and the running time of a high-speed train on the power supply arm, and the data pre-processing unit performs missing complement processing and abnormality detection processing on the power quality data; and the clustering unit clusters the power quality data of a sample having undergone normalization processing, to acquire power quality data classes of different vehicle types; the outlier detection unit performs outlier detection on the power quality after clustering processing, obtains an outlier set and sends the outlier set to the power quality database for storage.

Description

technical field [0001] The invention relates to the technical field of power quality monitoring, in particular to a high-speed rail power quality monitoring system. Background technique [0002] Electrified high-speed railway locomotives are nonlinear and impact loads, which mainly affect power quality such as negative sequence and harmonics to the power grid. At the same time, different types of locomotives cause different power quality characteristics of the power grid, especially harmonic characteristics. These not only have adverse effects on other equipment in the grid, but also pose a threat to the stability and reliability of its own operation. The electric locomotive of the electrified railway is a high-power single-phase rectifier load with great fluctuations, and due to the various states of acceleration, coasting, and braking of the train during operation, as well as the slope of the line, the radius of the curve, the weather conditions, and the driver's operation...

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Application Information

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IPC IPC(8): G01R31/00G01R23/16
CPCG01R23/16G01R31/00
Inventor 李健斌
Owner 深圳众厉电力科技有限公司
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