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Transformer substation power quality monitoring system

A power quality and monitoring system technology, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., to achieve the effect of improving accuracy, ensuring continuous and reliable power supply, and realizing safe, stable and reliable operation

Inactive Publication Date: 2016-05-25
WUXI NUIST WEATHER SENSOR NETWORK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a substation power quality monitoring system, which solves the problem of on-line monitoring of power quality at the substation side

Method used

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Embodiment Construction

[0022] The technical scheme of the present invention is described in detail below:

[0023] A substation power quality monitoring system, including a central processing module, a voltage measurement module, a current measurement module, a frequency monitoring module, a flicker test module, a display module, and an alarm module, the voltage measurement module includes a harmonic voltage measurement module, a fundamental wave A voltage measurement module and a three-phase voltage unbalance measurement module, the harmonic voltage measurement module is used to measure the harmonic voltage content rate in one cycle, and the fundamental voltage measurement module is used to measure the phase error of the fundamental voltage in one cycle , the three-phase voltage unbalance measurement module is used to measure the three-phase voltage unbalance error degree, the current measurement module includes a fundamental wave current measurement module, a harmonic current measurement module, an...

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Abstract

The invention discloses transformer substation power quality monitoring system, the system comprises a central processing module, voltage measuring module, an electric current measuring module, a frequency monitoring module, a flicker test module, a display module and an alarm module, wherein the electric current measuring module comprises a fundamental current measuring module and a harmonic current measuring module, the central processing module is used for converting a measured analog signal into a digital signal and processing and displaying through the display module, the alarm module is used for transmitting an alarm message when the voltage, electric current or frequency signal has exceptions. The system can accurately and timely monitor the power quality of the transformer substation online, the following conditions caused by the poor power quality can be avoided, including: the monitoring can not be acquired, the user electrical equipment is damaged, and the system unstably operates.

Description

technical field [0001] The invention relates to a substation power quality monitoring system, which belongs to the field of power auxiliary equipment. Background technique [0002] There are a large number of nonlinear, impact and fluctuating loads in the power system, such as high-power frequency conversion equipment and drive devices, electrified railways, rectification equipment in the electrified industry, induction heating furnaces, electric arc furnaces, etc. These loads cause waveforms in the power grid Distortion (harmonic), voltage fluctuation, flicker, three-phase unbalance, and asymmetry seriously degrade the power quality of the power grid. At the same time, precision electronic instruments based on computers and microprocessors are widely used in national economic enterprises, and they are more and more sensitive to the quality of power supply, which puts forward higher requirements for power quality, so that power quality problems and their solutions Measures ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 禹胜林
Owner WUXI NUIST WEATHER SENSOR NETWORK TECH
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