Ethernet-based power quality on-line monitoring device

A technology of power quality and monitoring device, which is applied in the direction of measuring device, circuit device, measuring electrical variable, etc., can solve the problem of insufficient accuracy and real-time performance of online monitoring of power quality, limited digital communication capability, and inability to realize remote data exchange and sharing, etc. problem, to achieve good accuracy, improve accuracy and real-time effect

Active Publication Date: 2015-12-02
HENGDIAN TECH CO LTD
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AI Technical Summary

Problems solved by technology

At present, the online power quality monitoring devices on the market mainly have the following deficiencies: the accuracy and real-time performance o...

Method used

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  • Ethernet-based power quality on-line monitoring device
  • Ethernet-based power quality on-line monitoring device
  • Ethernet-based power quality on-line monitoring device

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0044] Such as figure 1As shown, an Ethernet-based power quality online monitoring device includes a power grid 1, a data acquisition sub-module 2, a DSP analysis sub-module 3, a basic electric parameter coprocessor 4, and an industrial computer secondary storage and control sub-module 5 , Power quality management platform 6, DSP analysis sub-module 3 performs mathematical analysis on grid voltage and current waveform data collected by data acquisition sub-module 2 to obtain power quality index data, and DSP analysis sub-module 3 also reads basic electrical parameters for co-processing The high-precision basic electrical parameter data obtained by the device 4 are transmitted to the secondary storage and control sub-module 5 of the industrial computer in real time together with the power quality index data, and then the power quality management platf...

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Abstract

The invention discloses an Ethernet-based power quality on-line monitoring device comprising a power grid 1, a data acquisition sub module 2, a DSP analysis sub module 3, a basic electrical parameter coprocessor 4, an industrial personal computer secondary storage and control sub module 5, and a power quality management platform 6. The DSP analysis sub module 3 mathematically analyzes power grid voltage and current waveform data acquired by the data acquisition sub module 2 to obtain power quality index data, and the DSP analysis sub module 3 reads high-precision basic electrical parameter data obtained by the basic electrical parameter coprocessor 4 and transmits the high-precision basic electrical parameter data and the power quality index data to the industrial personal computer secondary storage and control sub module 5 in real time. The power quality management platform 6 calls data from the industrial personal computer secondary storage and control sub module 5 regularly, periodically or artificially. The power quality management platform 6 mainly completes statistical and expert analysis of harmonics and inter-harmonics, voltage fluctuation and flickering, amplitude-frequency deviation, transient disturbance and other indexes. By adopting the device, power quality can be monitored and analyzed in a real-time and comprehensive manner, especially, harmonics, inter-harmonics, transient disturbance and flickering can be monitored, the accuracy and real-time performance are improved, and the frequency resolution is improved.

Description

technical field [0001] The invention relates to the technical field of online power quality monitoring, in particular to an Ethernet-based power quality online monitoring device. Background technique [0002] With the development and promotion of smart grid technology, user-side distributed power generation (such as wind power generation, photovoltaic power generation, biomass power generation, etc.) Large-scale applications have a great impact on the reliability of grid power supply and the power quality of power distribution systems. The intermittent and random nature of distributed power will cause voltage fluctuations and flicker in the distribution network, resulting in the voltage quality of some nodes exceeding the standard; inappropriate inverter control strategies in distributed power will produce unbalanced voltage and harmonic pollution , have adverse effects on the user-side electrical equipment; distributed power grid-connected operation will reduce the reliabi...

Claims

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Application Information

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IPC IPC(8): G01R31/00H02J13/00G06F17/14G06F17/17
CPCY04S10/52
Inventor 蔡宇杨阿齐
Owner HENGDIAN TECH CO LTD
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