Inventor · disambiguated record
Youyi Li
Also filed as: LI YOUYI
22 granted patents·2 pending applications·24 citations·filing 2009–2023
91Inventor score
Files withHITACHI ENERGY SWITZERLAND AG6ABB SCHWEIZ AG5ABB POWER GRIDS SWITZERLAND AG4LI YOUYI3HITACHI ENERGY LTD2
Top patents by PatentIndex Score
24 records- 0189US11022655B2Method and control system for faulted phase detectionABB POWER GRIDS SWITZERLAND AG·Filed 2018·Granted Jun 1, 2021·4 cites·24 claims
- 0283US11050239B2Method and control system for fault direction detectionABB POWER GRIDS SWITZERLAND AG·Filed 2019·Granted Jun 29, 2021·2 cites·20 claims
- 0379US8791730B2Synchronization method for current differential protectionLI YOUYI·Filed 2010·Granted Jul 29, 2014·6 cites·9 claims
- 0470US10295586B2Fault detection of a transmission lineABB SCHWEIZ AG·Filed 2016·Granted May 21, 2019·1 cites·19 claims
- 0570US8526333B2Method for detecting network asymmetrical status and asymmetrical communication channels for power systemLI YOUYI·Filed 2009·Granted Sep 3, 2013·4 cites·6 claims
- 0667US10393810B2Method for identifying the fault by current differential protection and device thereofLI YOUYI·Filed 2012·Granted Aug 27, 2019·2 cites·14 claims
- 0763US10120012B2Method and apparatus for detecting fault in a mixed configuration power transmission lineABB SCHWEIZ AG·Filed 2015·Granted Nov 6, 2018·1 cites·20 claims
- 0862US9042412B2Method and apparatus for detecting communication channel delay asymmetrySU BIN·Filed 2009·Granted May 26, 2015·2 cites·12 claims
- 0961US10416221B2Voltage based method for fault identification in a transmission line apparatus thereofYANG YING·Filed 2011·Granted Sep 17, 2019·2 cites·16 claims
- 1057US11879928B2Differential protection of a transmission lineHITACHI ENERGY LTD·Filed 2020·Granted Jan 23, 2024·0 cites·21 claims
- 1156US11435411B2Time domain distance protection based on polarity comparison for power transmission linesHITACHI ENERGY SWITZERLAND AG·Filed 2020·Granted Sep 6, 2022·0 cites·20 claims
- 1255US11280824B2High sensitive phase selection methodHITACHI ENERGY SWITZERLAND AG·Filed 2017·Granted Mar 22, 2022·0 cites·24 claims
- 1354US11703534B2Determining of a power line faultHITACHI ENERGY SWITZERLAND AG·Filed 2021·Granted Jul 18, 2023·0 cites·20 claims
- 1454US11469589B2Zero sequence current based line differential protection solutionHITACHI ENERGY SWITZERLAND AG·Filed 2017·Granted Oct 11, 2022·0 cites·20 claims
- 1554US2025164537A1Phase selection methodHITACHI ENERGY LTD·Filed 2023·Application pending·0 cites
- 1652US11112445B2Travelling wave pilot protection of a transmission line based on time synchronizationABB POWER GRIDS SWITZERLAND AG·Filed 2015·Granted Sep 7, 2021·0 cites·20 claims
- 1752US10734803B2Travelling wave protection of a transmission line based on high-pass filteringABB POWER GRIDS SWITZERLAND AG·Filed 2015·Granted Aug 4, 2020·0 cites·19 claims
- 1851US11652347B2Method, system and apparatus for fault detection in line protection for power transmission systemHITACHI ENERGY SWITZERLAND AG·Filed 2018·Granted May 16, 2023·0 cites·22 claims
- 1950US10074969B2Travelling wave protection of a transmission lineABB SCHWEIZ AG·Filed 2015·Granted Sep 11, 2018·0 cites·17 claims
- 2045US11594874B2Method for detecting fault in power transmission line and protection system using the sameHITACHI ENERGY SWITZERLAND AG·Filed 2019·Granted Feb 28, 2023·0 cites·12 claims
- 2145US10444272B2Method and apparatus for detection of power system disturbance within a digital substationABB SCHWEIZ AG·Filed 2015·Granted Oct 15, 2019·0 cites·18 claims
- 2245US9899830B2Method for detecting fault and current differential protection system thereofABB SCHWEIZ AG·Filed 2013·Granted Feb 20, 2018·0 cites·12 claims
- 2343US2012206149A1Method and Apparatus for Ground Distance ProtectionSU BIN·Filed 2009·Application pending·0 cites
- 2420US9018938B2Integrated device suspended at high voltage potential for power energy metering and protection of distribution networkHOU TIEXIN·Filed 2011·Granted Apr 28, 2015·0 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Youyi Li files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →