Patent · US Active

Estimation method for M-class phasor measurement units

US11119129B1 · kind B1 · utility

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Assignee

NORTH CHINA ELECTRICAL POWER UNIVERSITY · CN

Inventors

Hao Liu · Taoyuan, TW
Tianshu Bi · Beijing, CN
Sudi Xu · Beijing, CN

Key dates

Filing date	Jan 25, 2021
Grant date	Sep 14, 2021
Priority date	—
Expiry date	Jan 25, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY04S10/22
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An improved phasor estimation method for M-class phasor measurement units (PMUs) with a low computational burden is described. The method contains three steps: 1) A phasor measurement filter is designed by selecting parameters of Taylor weighted least square method to prioritize dynamic phasor accuracy and a high level of suppression on high-frequency interferences; 2) A finite impulse response lowpass filter is designed by the equal-ripple method is put forward to suppress low-frequency interferences; and 3) Phasor amplitude is corrected under off-nominal conditions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.