Phase selection method
US-2025164537-A1 · May 22, 2025 · US
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Li Youyi patents
Li Youyi is listed as an inventor on 30 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Li Youyi |
| Total patents | 30 |
| First publication | Jan 25, 2018 |
| Latest publication | May 22, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Differential protection of a transmission line
US-11879928-B2 · Jan 23, 2024 · US
Determining of a power line fault
US-11703534-B2 · Jul 18, 2023 · US
Method, system and apparatus for fault detection in line protection for power transmission system
US-11652347-B2 · May 16, 2023 · US
Method for detecting fault in power transmission line and protection system using the same
US-11594874-B2 · Feb 28, 2023 · US
Zero sequence current based line differential protection solution
US-11469589-B2 · Oct 11, 2022 · US
Time domain distance protection based on polarity comparison for power transmission lines
US-11435411-B2 · Sep 6, 2022 · US
Differential Protection of a Transmission Line
US-2022091173-A1 · Mar 24, 2022 · US
High sensitive phase selection method
US-11280824-B2 · Mar 22, 2022 · US
Determining of a power line fault
US-2022065913-A1 · Mar 3, 2022 · US
Recent patents
Latest publications not already listed above.
Travelling wave pilot protection of a transmission line based on time synchronization
US-11112445-B2 · Sep 7, 2021 · US
Method and control system for fault direction detection
US-11050239-B2 · Jun 29, 2021 · US
Method and control system for faulted phase detection
US-11022655-B2 · Jun 1, 2021 · US
New Zero Sequence Current Based Line Differential Protection Solution
US-2020335967-A1 · Oct 22, 2020 · US
Time Domain Distance Protection Based on Polarity Comparison for Power Transmission Lines
US-2020319262-A1 · Oct 8, 2020 · US
High Sensitive Phase Selection Method
US-2020319241-A1 · Oct 8, 2020 · US
Travelling wave protection of a transmission line based on high-pass filtering
US-10734803-B2 · Aug 4, 2020 · US
Method and apparatus for detection of power system disturbance within a digital substation
US-10444272-B2 · Oct 15, 2019 · US
Method for detecting fault in power transmission line and protection system using the same
US-2019296543-A1 · Sep 26, 2019 · US
Method and control system for fault direction detection
US-2019271730-A1 · Sep 5, 2019 · US
Fault detection of a transmission line
US-10295586-B2 · May 21, 2019 · US
Method and control system for faulted phase detection
US-2019072603-A1 · Mar 7, 2019 · US
Fault Detection Of A Transmission Line
US-2018364293-A1 · Dec 20, 2018 · US
Method and apparatus for detecting fault in a mixed configuration power transmission line
US-10120012-B2 · Nov 6, 2018 · US
Travelling wave protection of a transmission line
US-10074969-B2 · Sep 11, 2018 · US
Travelling Wave Protection Of A Transmission Line Based On High-Pass Filtering
US-2018145505-A1 · May 24, 2018 · US
Travelling Wave Pilot Protection Of A Transmission Line Based On Time Synchronization
US-2018143238-A1 · May 24, 2018 · US
Method and apparatus for detecting fault in a mixed configuration power transmission line
US-2018106849-A1 · Apr 19, 2018 · US
Travelling Wave Protection Of A Transmission Line
US-2018069391-A1 · Mar 8, 2018 · US
Method and apparatus for detection of power system disturbance within a digital substation
US-2018024183-A1 · Jan 25, 2018 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Abb Schweiz Ag | 13 |
| Abb Power Grids Switzerland Ag | 9 |
| Hitachi Energy Switzerland Ag | 6 |
| Hitachi Energy Ltd | 2 |
| Hitachi Energy Switzerland Ltd | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G01R31/085 | 24 |
| H02H1/0007 | 15 |
| H02H7/265 | 12 |
| G01R31/088 | 10 |
| H02H7/26 | 10 |