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:
Feb. 04, 2025
Filed:
Aug. 04, 2022
State Grid Jiangsu Electric Power Co., Ltd. Research Institute, Jiangsu, CN;
State Grid Jiangsu Electric Power Co., Ltd., Jiangsu, CN;
Jiangsu Electric Power Research Institute Co., Ltd., Jiangsu, CN;
Jingying Cao, Jiangsu, CN;
Qiang Huang, Jiangsu, CN;
Jinggang Yang, Jiangsu, CN;
Jie Chen, Jiangsu, CN;
Rong Sun, Jiangsu, CN;
Jianjun Liu, Jiangsu, CN;
Xiao Tan, Jiangsu, CN;
Libin Hu, Jiangsu, CN;
Chenying Li, Jiangsu, CN;
Wei Zhang, Jiangsu, CN;
Abstract
Disclosed are a device and method for detecting defects of a high-voltage cable cross-bonded grounding system. The method selects a protective grounding box of a cross-bonded grounding system, respectively connects a signal excitation coupler to A-phase, B-phase and C-phase coaxial cables of the protective grounding box, selects a stable signal with a frequency different from a power frequency or a field interference frequency, and tests effective current values and phases responded by the A-phase, B-phase and C-phase coaxial cables when the stable signal with the frequency F1 is injected into the A-phase, B-phase and C-phase coaxial cables of the protective grounding box; and obtains resistances and inductances of branch circuits of the cable cross-bonded grounding system by calculation according to measurement data, and determines if the cable cross-bonded grounding system has a connection defect.