The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2020
Filed:
Jul. 18, 2016
China Electric Power Research Institute Company Limited, Beijing, CN;
State Grid Corporation of China, Beijing, CN;
State Grid Central China Grid Company Ltd., Wuhan, CN;
Huanzhang Liu, Wuhan, CN;
Zexin Zhou, Beijing, CN;
Dingxiang Du, Beijing, CN;
Yarong Guo, Beijing, CN;
Xiao Li, Beijing, CN;
Xuming Liang, Beijing, CN;
Delin Wang, Beijing, CN;
Xingguo Wang, Beijing, CN;
CHINA ELECTRIC POWER RESEARCH INST. CO. LIMITED, Beijing, CN;
STATE GRID CORPORATION OF CHINA, Beijing, CN;
STATE GRID CENTRAL CHINA GRID COMPANY LTD., Wuhan, CN;
Abstract
A method of free wave energy protection for a half-wavelength line based on a one-sided current includes: performing sampling and calculation on a current at protection measuring points to obtain variations in current sampling values; and activating a protective element to determine an occurrence time of a fault in a half-wavelength line. A free wave energy protection section includes a quick-action section, a basic section and a sensitive section, wherein the quick-action section, the basic section and the sensitive section serve as action criteria for performing protection with respect to the free wave energy of the half-wavelength line.