Inventor
HOU DAQING
US13 patents
⚠️ This page may combine multiple inventors who share the name “HOU DAQING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHWEITZER ENGINEERING LAB INC
12 patentsUS5703745ADec 30, 1997
System for detection of transients from a coupling capacitor voltage transformer used in a protective relay
SCHWEITZER ENGINEERING LAB INC63 citations96
US6573726B1Jun 3, 2003
Sensitive ground fault detection system for use in compensated electric power distribution networks
SCHWEITZER ENGINEERING LAB INC64 citations94
US7945400B2May 17, 2011
Systems and methods for detecting high-impedance faults in a multi-grounded power distribution system
SCHWEITZER ENGINEERING LAB INC17 citations92
US7720619B2May 18, 2010
Systems and methods for detecting high-impedance faults in a multi-grounded power distribution system
SCHWEITZER ENGINEERING LAB INC35 citations92
US5883578AMar 16, 1999
Loss of potential determination for use in protective relays for electric power systems
SCHWEITZER ENGINEERING LAB INC25 citations92
US5731943AMar 24, 1998
Protective relay having out-of-step logic capability
SCHWEITZER ENGINEERING LAB INC50 citations92
US6833711B1Dec 21, 2004
Protective relay for powers systems having dependable out-of-step blocking capability
SCHWEITZER ENGINEERING LAB INC20 citations87
US9160158B2Oct 13, 2015
Coordinated high-impedance fault detection systems and methods
SCHWEITZER ENGINEERING LAB INC13 citations84
US7457088B2Nov 25, 2008
Systems and methods for protection of electrical networks
SCHWEITZER ENGINEERING LAB INC14 citations83
US5790418AAug 4, 1998
Adaptive polarizing memory voltage time constant
SCHWEITZER ENGINEERING LAB INC10 citations73
US11143715B2Oct 12, 2021
Broken conductor detection in a multiple-phase electric power delivery system
SCHWEITZER ENGINEERING LAB INC3 citations68
US11114892B2Sep 7, 2021
Electric power system transducer failure monitor and measurement recovery
SCHWEITZER ENGINEERING LAB INC0 citations52