Patent · US Active

Method and device for timing in time-varying distance protection based on multiple lines in tower

US11749985B2 · kind B2 · utility

0Cited by

0References

11Claims

0Family size

Assignees

CHINA ELECTRIC POWER RESEARCH INSTITUTE · CN
State Grid Corporation of China · CN

Inventors

Zexin Zhou · Shanghai, CN
Tianhua LI · Beijing, CN
Hong-Xi Cao · Beijing, CN
Yarong Guo · Beijing, CN
Xingguo Wang · Fremont, US
Dingxiang Du · Beijing, CN
Delin Wang · Beijing, CN
Pengfei Lv · Beijing, CN
Zhi Zhang · Sichuan, CN

Key dates

Filing date	Oct 31, 2019
Grant date	Sep 5, 2023
Priority date	—
Expiry date	Jan 16, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH02J2203/20
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and device for timing in time-varying distance protection based on multiple lines of a tower. The method includes: collecting an instantaneous current value at a time-varying distance protection installation location in the multiple lines of the tower, and acquiring preset parameters; calculating, according to the preset parameters and a multi-line ranging model, a multi-line ranging result; calculating, according to the preset parameters, the multi-line ranging result, and an adaptive calculation model, time of a section-II distance protection action and final time of a section-III distance protection action; and determining, according to the instantaneous current value, the preset parameters, and a cross-line failure auxiliary criterion model, final time of the section-II distance protection action.

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