Ellery A Blood

20220365137, Nov 17, 2022

May 13, 2021

17/319412

- Pullman WA, US
Ellery A. Blood - Moscow ID, US
Gregary C. Zweigle - Pullman WA, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

G01R 31/34

A condition-based monitoring system receives a plurality of measurements from sensors measuring mechanical and electrical aspects of a prime mover and a synchronous machine. The condition-based monitoring system determines a correlation between the mechanical measurements and electrical measurements to estimate parameters of the model. The condition-based monitoring system also updates the model as sensors obtain additional measurements during operation of the prime mover.

20210278447, Sep 9, 2021

May 5, 2021

17/308138

- Pullman WA, US
Gregary C. Zweigle - Pullman WA, US
Ellery A. Blood - Moscow ID, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

G01R 21/06
G01R 21/133
G06Q 50/06

Electric power system voltage control and voltage stability may be calculated using energy packets. Sets of negative energy packet sets normalized by a set of positive and negative energy packet sets may be used for voltage control by adding or removing capacitive units. Energy packet voltage indicators may be calculated using energy packets, and used to determine voltage stability. Control actions may be taken depending on the determined voltage stability.

20210109158, Apr 15, 2021

Oct 14, 2019

16/601261

- Pullman WA, US
Ellery A. Blood - Moscow ID, US
Gregary C. Zweigle - Pullman WA, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

G01R 31/34
G01P 3/48

A frequency tracking system may use shaft speed and electrical frequency to estimate a frequency of a monitored machine. The frequency tracking system may convert shaft speed to a mechanical frequency and blend the electrical frequency and the mechanical frequency together to determine an estimated frequency. The frequency tracking system may blend the frequencies based on an operating state of the monitored machine and the frequency sensors.

20210111651, Apr 15, 2021

Oct 12, 2020

17/068414

- Pullman WA, US
Ellery A. Blood - Moscow ID, US
Gregary C. Zweigle - Pullman WA, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

H02P 9/10
H02P 9/04
F02D 31/00
F02B 63/04

A device to control a genset engine may use multiple feedback loops to provide a fast stable response to load changes. An outer feedback loop may receive frequency measurements and power measurements of a genset engine and determine a dispatch adjustment comprising a frequency setpoint based on the frequency measurements and power measurements. A middle feedback loop may comprise a double deadband droop filter that periodically generates a pulse based on the frequency setpoint and the power measurements. The middle feedback loop may update an inner loop setpoint based on the pulse. An inner feedback loop may alter a target fuel valve reference of the genset engine based on the inner loop setpoint generated by the second controller and a fuel valve droop.

20210111652, Apr 15, 2021

Oct 9, 2020

17/066982

- Pullman WA, US
Gregary C. Zweigle - Pullman WA, US
Ellery A. Blood - Moscow ID, US
Scott M. Manson - Moscow ID, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

H02P 9/42
H03H 17/02
H02P 9/10

A controller may use energy packets to control a prime mover of a machine. The controller may include an energy packet measurement control to calculate energy packets and convert the energy packets into a fuel valve reference. Further, a frequency control may receive system feedback associated with the monitored machine and generate a frequency correction based on the system feedback. The controller may add the energy packet value and the frequency correction to determine a prime mover power reference and provide the prime mover power reference to a fuel valve control of the machine.

20190267807, Aug 29, 2019

May 8, 2019

16/406501

- Pullman WA, US
Ellery A. Blood - Moscow ID, US

Schweitzer Engineering Laboratories, Inc. - Pullman WA

H02J 3/24

This disclosure includes various systems and methods for determining an operating stage based on electrical conditions in electric power delivery systems and identifying a control strategy based upon the operating stage. The control strategy may be selected and customized to avoid or to ameliorate stresses in an electric power delivery system while maintaining the stability of electric power delivery systems. Various embodiments consistent with the present disclosure may include a distributed controller configured receive a plurality of indications of electrical conditions from a plurality of control devices in electrical communication with the electrical power delivery system. The distributed controller may determine an operating stage from among a plurality of operating stages based upon the plurality of indications of electrical conditions. The distributed controller may further identify a control strategy based upon the operating stage. The control strategy may be communicated to and implemented by the plurality of control devices.

20180024203, Jan 25, 2018

Jul 20, 2016

15/214922

- Pullman WA, US
Ellery Abner Blood - Moscow ID, US

G01R 31/40
G06F 11/14
H03K 5/26

The present disclosure pertains to detection of anomalous conditions in a variety of types of systems. In one embodiment, a system may be configured to identify anomalous conditions in a stream of measurements. The system may include a communications interface configured to receive a stream of measurements. An archive subsystem may maintain a data archive comprising a statistical representation of the stream of measurements. A pre-processing subsystem may divide the stream of measurements into a plurality of data windows. The plurality of data windows may be analyzed by an analysis subsystem configured to generate a plurality of normalized representations based on the data archive. The plurality of normalized representations may be grouped into a plurality of ranges. An anomaly detection subsystem may perform a comparison of the plurality of normalized representations to at least one threshold and may determine that the comparison indicates an anomalous condition.

20150089027, Mar 26, 2015

Sep 22, 2014

14/492974

- Pullman WA, US
Eric J. Hewitt - Moscow ID, US
Ellery A. Blood - Moscow ID, US
Stanley P. Gotshall - Moscow ID, US
Riley Grant Huddleston - Pullman WA, US
William D. Morrison - Pullman WA, US
Jared Kyle Bestebreur - Pullman WA, US

H04L 12/26
H04L 29/06

709219

Combining and analyzing streamed and polled electric power delivery system information is disclosed herein. A system therefore includes a plurality of IEDs in communication with the electric power distribution system and configured to provide streaming and/or polled data via a communications network. An analysis engine in communication with the communications network receives selected streaming information and requested polled information, analyzes such streamed and polled information, and provides a display of such streaming and polled information to a user.