Monitoring and orientation system of pollution sources of electrical energy quality

A power quality and directional system technology, applied in the direction of measurement using digital measurement technology, spectrum analysis/Fourier analysis, etc., can solve the problem of not being able to guide and determine the optimal control location of power quality, affecting the normal operation of other loads, and hindering normal operation To achieve the effect of improving the power supply quality of the power grid, good online application capabilities, and avoiding large-scale transmission
CN101762741AActive Publication Date: 2010-06-30FUJIAN ELECTRIC POWER TEST & RES INST +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIAN ELECTRIC POWER TEST & RES INST
Publication Date
2010-06-30

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Abstract

The invention relates to a monitoring device, in particular to a monitoring and orientation system of pollution sources of electrical energy quality. The system provides monitoring and orientation of flickering pollution sources of an electrical network, realizes conjoint analysis of voltage signals and current signals for the first time, identifies the sources of flickering pollution components contained in load voltage or load current to achieve the technical purpose of flickering pollution orientation, and further provides monitoring and orientation of harmonic pollution sources and monitoring and orientation of sudden rise and sudden drop of voltage. The system realizes the on-line orientation function of the pollution sources of the electrical energy quality for the first time, provides effective centralized processing for a power supply system, avoids large-scale propagation of pollution signals, improves the power supply quality of the electrical network, provides unified standards and a theoretical basis for the solution of the pollution sources of the electrical energy, and has significance for technical development of monitoring and orientation of the pollution sources of the electrical network.
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Description

technical field

[0001] The invention relates to a monitoring device, in particular to a monitoring and orientation system for power quality pollution sources. Background technique

[0002] With the application of a large number of nonlinear power electronic components and the emergence of nonlinear loads, more and more waveform disturbances such as voltage discontinuity, short-term impact, flicker and notch are fed into the system from the user end, which has a negative impact on the power system. interfere with normal operation. In addition, flashover or discharge of insulators caused by lightning strikes, and various faults and oscillations caused by power system equipment may induce power system accidents, cause temporary interruption of power supply, and reduce power supply reliability.

[0003] There are many cases of poor power quality, and the sensitivity of users to power quality is also different. With the change of the sensitivity of various electrical equipment t...

Claims

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