Method and system for measuring harmonics of power system

A power system and harmonic technology, applied in the field of electric power, can solve the problems of complex hardware structure, high cost, and complicated synchronous sampling operation of the hardware system, and achieve the effect of improving the efficiency of harmonic measurement and improving the measurement speed

Active Publication Date: 2015-04-01
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This invention describes an improved way for measuring electrical signals accurately without having to wait too long or with complicated calculations that require expensive equipment. By generating specific frequencies based upon these measurements, it becomes faster than traditional methods like phase locked loop (PLL) techniques which are time-consuming processes.

Problems solved by technology

This patented technical problem addressed in this patents relates to measuring power harmonsies (power components) quickly with efficient algorithms that can be implemented without requiring expensive equipment or long periods for data collection.

Method used

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  • Method and system for measuring harmonics of power system
  • Method and system for measuring harmonics of power system
  • Method and system for measuring harmonics of power system

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] Although the steps in the present invention are arranged with labels, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted.

[0031] see figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the method for measuring harmonics in a power system according to the present invention.

[0032] The harmonic measurement method of the power system of this embodiment may include the following steps:

[0033] Step S101, me

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Abstract

The invention discloses a method and a system for measuring harmonics of a power system. The method comprises the following steps of synchronously sampling power signals to generate a synchronous data sequence; enabling the length of the synchronous data sequence in a unit fundamental wave cycle to be equivalent with the unit time length, and generating equivalent fundamental wave frequency; multiplying the synchronous data sequence by a preset window function data sequence, and to generate a window data sequence; performing multiple integer calculation on the window data sequence to generate the equivalent harmonics frequency amplitude; obtaining the ratio of the equivalent harmonics frequency amplitude and the equivalent fundamental wave frequency amplitude, so as to measure the harmonics. The method and the system can improve the harmonic measuring speed.

Description

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Claims

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Application Information

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Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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