Supercharge Your Innovation With Domain-Expert AI Agents!

Power distribution network synchronous phasor measurement method based on TLS-ESPRIT algorithm

A technology for synchronous phasor measurement and distribution network, which is applied in measurement devices, measurement of electrical variables, phase angle between voltage and current, etc. Incomplete spectrum and other problems to achieve the effect of eliminating the impact

Inactive Publication Date: 2020-11-03
JIANGYIN POWER SUPPLY OF JIANGSU ELECTRICPOWER +2
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The most commonly used phasor calculation in synchronized phasor measurement is the discrete Fourier transform method. The corresponding sampling methods are divided into two types: equal time interval sampling method and equal phase interval sampling method. Complete or excessive spectral leakage problems, which in turn have the problem of inconsistent calculation of phasors and synchronization time scales

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
  • Power distribution network synchronous phasor measurement method based on TLS-ESPRIT algorithm
  • Power distribution network synchronous phasor measurement method based on TLS-ESPRIT algorithm
  • Power distribution network synchronous phasor measurement method based on TLS-ESPRIT algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] see Figure 1~3 , a method for measuring distribution network synchronized phasors based on the TLS-ESPRIT algorithm that the present invention relates to, the method steps are:

[0026] Step 1. TLS-ESPRIT calculation under frequency synchronous sampling; the data processing part of the synchrophasor measurement device first marks the beginning of the TLS-ESPRIT data window according to the arrival of the unified timing, so as to start recording the number of sampling points. When the number of full points N / 2 is collected, the TLS-ESPRIT calculation is performed on the sampled value of N / 2 points, and the calculated amplitude and phase angle of the phasor are respectively A esp and Since the phasor amplitude has little relationship with the time deviation, only for calculating the phase angle Make corrections; where, N is a self-defined positive integer;

[0027] Step 2. Measure the time deviation between the unified timing and the first sampling point of the data...

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 power distribution network synchronous phasor measurement method based on a TLSESPRIT algorithm. The method comprises the following steps: 1, carrying out TLSESPRIT calculation under frequency synchronous sampling; 2, measuring the time deviation between a unified time sequence and a first sampling point of a data window; 3, calculating a phase angle deviation corresponding to the time deviation; 4, carrying out TLSESPRIT calculation phase angle correction; 5, setting a phase angle compensation module. According to the power distribution network synchronous phasor measurement method based on the TLSESPRIT algorithm, the problem of frequency drift of measurement nodes can be effectively solved.

Description

technical field [0001] The invention relates to a method for measuring a synchronized phasor of a distribution network, in particular to a method for measuring a synchronized phasor of a distribution network based on a TLS-ESPRIT algorithm. Background technique [0002] Distribution network and transmission network are very different in terms of network structure, structural stability, three-phase balance and load status. For example, in terms of network structure characteristics, although the distribution network has many nodes compared with the transmission network, the nodes of the distribution network are regionally concentrated, which is different from the long-distance distribution between nodes in the transmission network; The grid network topology has the characteristics of variability. As a result, both the GPS hardware synchronization of the whole network and the Ethernet synchrophasor measurement technology are not suitable for the application in the distribution...

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): G01R25/02G01R23/163
CPCG01R25/02G01R23/163
Inventor 管俊邵灵芝
Owner JIANGYIN POWER SUPPLY OF JIANGSU ELECTRICPOWER
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