Inventor
ZHANG QIXUE
CN5 patents
Patents
5 patentsUS9584007B2Feb 28, 2017
Current source converter differential protection method and relay protection device
NR ELECTRIC CO LTD2 citations68
US11264793B2Mar 1, 2022
Method and device for quickly eliminating ferromagnetic resonance of voltage transformer
NR ELECTRIC CO LTD1 citations60
US11422204B2Aug 23, 2022
Method for detecting open phase of startup/standby transformer based on optical CT
NR ELECTRIC CO LTD0 citations48
US10267859B2Apr 23, 2019
Method and apparatus for identifying open phase of circuit breaker on basis of voltage
NR ELECTRIC CO LTD0 citations45
US10128650B2Nov 13, 2018
Relay protection method and apparatus against LC parallel circuit detuning faults
NR ELECTRIC CO LTD0 citations45