Inter-turn protection method and system for converter transformer
US-2025357850-A1 · Nov 20, 2025 · US
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Du Dingxiang patents
Du Dingxiang is listed as an inventor on 15 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Du Dingxiang |
| Total patents | 15 |
| First publication | Nov 2, 2017 |
| Latest publication | Nov 20, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Direct-current transmission line protection method and system based on pure current characteristics
US-11973340-B2 · Apr 30, 2024 · US
Method and device for timing in time-varying distance protection based on multiple lines in tower
US-11749985-B2 · Sep 5, 2023 · US
Method and device for starting direct-current (DC) transmission line protection, and storage medium
US-11742652-B2 · Aug 29, 2023 · US
Line double-end steady-state quantity distance measuring method and system based on amplitude-comparison principle
US-2022413031-A1 · Dec 29, 2022 · US
Direct-current transmission line protection method and system based on pure current characteristics
US-2022285931-A1 · Sep 8, 2022 · US
Method and device for timing in time-varying distance protection based on multiple lines in tower
US-2022239093-A1 · Jul 28, 2022 · US
Method and device for starting direct-current (dc) transmission line protection, and storage medium
US-2022131367-A1 · Apr 28, 2022 · US
Current differential protection method for self-adaptive half-wavelength line based on time-difference method
US-10985547-B2 · Apr 20, 2021 · US
Method of free wave energy protection for half-wavelength line based on one sided current
US-10778003-B2 · Sep 15, 2020 · US
Recent patents
Latest publications not already listed above.
Concomitant impedance protection method for half-wavelength transmission line
US-10605852-B2 · Mar 31, 2020 · US
Method of free wave energy protection for half-wavelength line based on one sided current
US-2019013667-A1 · Jan 10, 2019 · US
Current differential protection method for self-adaptive half-wavelength line based on time-difference method
US-2018375322-A1 · Dec 27, 2018 · US
Concomitant impedance protection method for half-wavelength transmission line
US-2018364292-A1 · Dec 20, 2018 · US
Method For Overcoming Influence Of Out-Flowing Current On Bus Differential Protection
US-2017317489-A1 · Nov 2, 2017 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| State Grid Corp China | 15 |
| China Electric Power Res Institute Company Limited | 9 |
| China Electric Power Res Inst | 8 |
| Central China Branch Of State Grid Corp Of China | 4 |
| State Grid Central China Grid Company Ltd | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| H02H1/0092 | 6 |
| G01R31/085 | 5 |
| H02H1/0007 | 4 |
| H02H7/26 | 4 |
| H02H7/226 | 4 |