Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for measuring AC active power

A technology of active power and measurement method, which is applied in the direction of electric power measurement through current/voltage, etc. It can solve the problems that cannot meet the high-accuracy measurement requirements of AC active power, and the smoothing filter operation is not targeted, and achieve good real-time performance and accuracy Highly accurate and targeted effects

Active Publication Date: 2016-02-17
深圳市科润宝实业有限公司
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typical smoothing filter operations include: direct integral operation, window function operation before integral operation, typical window functions such as Hanning window function, Blackman window function, etc., have good low-pass filtering effect, but these smoothing filter operations do not Targeted, unable to produce deep suppression of the large number of complex mixing frequency components, so it cannot meet the high-accuracy measurement requirements of AC active power

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for measuring AC active power
  • Method and device for measuring AC active power
  • Method and device for measuring AC active power

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In order to make the purpose, 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.

[0033] see figure 1 , figure 1 is a schematic flowchart of a method for measuring AC active power in some implementations.

[0034] Step S101, according to the preset signal time length and preset sampling frequency, the power signal is sampled to obtain a power signal sequence, the power signal includes a voltage signal and a current signal, and the power signal sequence includes a voltage signal sequence and a current signal respectively. signal sequence;

[0035] Step S102, measuring the frequency of the voltage signal sequence or the current signal sequence to obtain the preliminary frequency of the power signal;

[0036] Step S103, synchronously multiplying the voltage signal sequence and the current signal sequence to obtain a multiplication sequence;

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and device for measuring AC active power. The method sets a digital trapped wave parameter according to an initial frequency and a mixing interference frequency component in a multiplication sequence, constructs a wave trap through employing the digital trapped wave parameter, carries out the digital wave trapping of the multiplication sequence through the wave trap, and obtains a digital trapped wave sequence. Because the wave trap employed by the method is designed according to the initial frequency of an input signal sequence and the mixing interference frequency component in the multiplication sequence, the method is well targeted, and can achieve the deep inhibition of a large number of mixing frequency components. Therefore, the AC active power measured through the method is high in accuracy, and is good in instantaneity.

Description

technical field [0001] The invention relates to the technical field of power signal measurement, in particular to a method and device for measuring AC active power. Background technique [0002] In power engineering practice, AC active power measurement is of great significance to power systems. The traditional measurement method is mainly based on the multiplication of the voltage signal and the current signal, and smoothing the notch operation on the multiplication signal. The final value of the smoothing notch operation signal is the AC active power measurement result. When there are DC components, sub-harmonic components and sub-harmonic components in the AC voltage signal and AC current signal, a large number of complex mixing frequency components will be generated after the multiplication of the two signals, which needs to be smoothed and filtered. Typical smoothing filter operations include: direct integral operation, window function operation before integral operati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R21/06
Inventor 徐庆伟李军
Owner 深圳市科润宝实业有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com