Inventor

SCHWEITZER III EDMUND O

126 patents

⚠️ This page may combine multiple inventors who share the name “SCHWEITZER III EDMUND O”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SCHWEITZER III EDMUND O

SCHWEITZER ENGINEERING LAB INC

Protective relay with synchronized phasor measurement capability for use in electric power systems

Protective relay with synchronized phasor measurement capability for use in electric power systems

Communications processor for electric power substations

Apparatus for insuring the security of output signals from protective relays used in electric power systems

System of communicating output function status indications between two or more power system protective relays

System for visual monitoring of operational indicators in an electric power system

Motor protection relay using thermal models

Distance relay with load encroachment protection, for use with power transmission lines

Display transducer apparatus

Fault location method for radial transmission and distribution systems

Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements

Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements

Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements

Power line parameter adjustment and fault location using traveling waves

Apparatus and method for high-speed load shedding in an electrical power system

Protection quality capability for protective relays used in an electric power system

Fault identification system for use in protective relays for power transmission lines

Protective relay for power systems capable of being tested with low-level voltage and current signals

Negative sequence directional element for a relay useful in protecting power transmission lines

Negative sequence directional element for a relay useful in protecting power transmission lines

Apparatus and method for eliminating phase skew in a multi-channel data acquisition system

Distance relay using a polarizing voltage

Relay for detecting a current disturbance and asserting an output

Overvoltage detector to indicate voltage to a remote monitor

State and topology processor

Voltage and current source selection system for use in the protection, automation and control of an electric power system

Compensated inverse-time undervoltage load shedding systems

Systems and methods for performing a redundancy check using intelligent electronic devices in an electric power system

Magnetic probe apparatus and method for providing a wireless connection to a detection device

High-frequency electric power system signal processing system

Time-domain differential line protection of electric power delivery systems

Time-domain distance line protection of electric power delivery systems

Time-domain directional line protection of electric power delivery systems

Fault location using traveling waves

Distributed coordinated electric power delivery control system using component models

Coordinated high-impedance fault detection systems and methods

Protective device with metering and oscillography

SCHWEITZER EDMUND O III

Power angle monitor

Metering and protection system for an A.C. power system

Electric power system automation using time coordinated instructions

Systems and methods for generator ground fault protection

Arc flash protection with self-test

System and method for communicating power system information through a radio frequency device

Network access management via a secondary communication channel

Systems and method for obtaining a load model and related parameters based on load dynamics

Power angle monitor

Secure arc flash detection

Fault detection using phase comparison

Protective device with metering and oscillography

ELECTRIC POWER RES INST

Single-ended transmission line fault locator