公开(公告)号：US12055576B2

公开(公告)日：2024-08-06

申请号：US17929101

申请日：2022-09-01

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Cody W. Tews ,  Nicholas C. Seeley

IPC: G01R31/08 ,  H02H1/00

CPC classification number: G01R31/086 ,  H02H1/0007

Abstract: The present disclosure relates to systems and methods for calculating noise distributions in an electric power system. In one embodiment, a system to calculate a noise distribution in an electric power system may comprise a measurement subsystem to obtain a plurality of raw measurements of a parameter in the electric power system. A noise distribution determination subsystem may be configured to generate a plurality of scaled raw measurements from the plurality of raw measurements, generate a power spectrum density from the plurality of scaled raw measurements, generate a cumulative distribution from the power spectrum density, and determine a noise distribution from the power spectrum density. A protective action subsystem may monitor the parameter in the electric power system to identify a signal of interest by utilizing, at least in part, the noise distribution and generating a control action in response to the signal.

公开(公告)号：US20150331052A1

公开(公告)日：2015-11-19

申请号：US14709818

申请日：2015-05-12

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Nicholas C. Seeley ,  David J. Casebolt ,  Gregary C. Zweigle

IPC: G01R31/34

CPC classification number: G01R31/343 ,  G01R31/34

Abstract: Electrical power machines are monitored according to the disclosure herein using time stamped mechanical conditions and electrical conditions. The mechanical conditions may include rotational position, calculated and time stamped rotational frequency, valve position, temperature, or vibration. The time stamped electrical conditions may include electrical power system frequency, electrical power machine field data, electrical power machine terminal information such as voltage and current, and the like. Electrical and mechanical time-stamped electrical power machine data from different machines that may be local or remote from each other may be compared for monitoring the machines.

Abstract translation: 根据本文的公开内容，使用时间戳的机械条件和电气条件来监测电力机器。 机械条件可以包括旋转位置，计算的和时间标记的旋转频率，阀位置，温度或振动。 时间戳的电气条件可以包括电力系统频率，电力机场现场数据，电力机器终端信息如电压和电流等。 可以比较来自彼此本地或远程的不同机器的电气和机械时间标记的电力机器数据，以监测机器。

公开(公告)号：US20240077529A1

公开(公告)日：2024-03-07

申请号：US17929101

申请日：2022-09-01

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Cody W. Tews ,  Nicholas C. Seeley

IPC: G01R31/08 ,  H02H1/00

CPC classification number: G01R31/086 ,  H02H1/0007

Abstract: The present disclosure relates to systems and methods for calculating noise distributions in an electric power system. In one embodiment, a system to calculate a noise distribution in an electric power system may comprise a measurement subsystem to obtain a plurality of raw measurements of a parameter in the electric power system. A noise distribution determination subsystem may be configured to generate a plurality of scaled raw measurements from the plurality of raw measurements, generate a power spectrum density from the plurality of scaled raw measurements, generate a cumulative distribution from the power spectrum density, and determine a noise distribution from the power spectrum density. A protective action subsystem may monitor the parameter in the electric power system to identify a signal of interest by utilizing, at least in part, the noise distribution and generating a control action in response to the signal.

公开(公告)号：US10317467B2

公开(公告)日：2019-06-11

申请号：US14709818

申请日：2015-05-12

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Nicholas C. Seeley ,  David J. Casebolt ,  Gregary C. Zweigle

IPC: G01R31/34

Abstract: Electrical power machines are monitored and a loss-of-field event is determined thereof using time stamped mechanical conditions and electrical conditions. The mechanical conditions may include rotational position, calculated and time stamped rotational frequency, valve position, temperature, or vibration. The time stamped electrical conditions may include electrical power system frequency, electrical power machine field data, electrical power machine terminal information such as voltage and current, and the like. Electrical and mechanical time-stamped electrical power machine data from different machines that may be local or remote from each other may be compared for monitoring the machines.

公开(公告)号：US09800055B2

公开(公告)日：2017-10-24

申请号：US15003356

申请日：2016-01-21

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Nicholas C. Seeley

IPC: H02J1/00 ,  H02J3/00 ,  H02J3/44

CPC classification number: H02J3/44

Abstract: The present disclosure pertains to systems and methods for using time synchronized measurements of a generator output and an electrical bus, together with generator control algorithms to synchronize the frequency, voltage, and phase of a generator, or group of generators, prior to electrically connecting the generator to the electrical bus. More particularly, but not exclusively, the present disclosure pertains to systems that may be operated in an islanded configuration and in which one or more generators may be selectively synchronized based on a common time reference. The common time reference may allow the generators to be synchronized by autonomously driving one or more generators to a specified phase angle and frequency.

公开(公告)号：US20170214249A1

公开(公告)日：2017-07-27

申请号：US15003356

申请日：2016-01-21

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Nicholas C. Seeley

IPC: H02J3/44

CPC classification number: H02J3/44

Abstract: The present disclosure pertains to systems and methods for using time synchronized measurements of a generator output and an electrical bus, together with generator control algorithms to synchronize the frequency, voltage, and phase of a generator, or group of generators, prior to electrically connecting the generator to the electrical bus. More particularly, but not exclusively, the present disclosure pertains to systems that may be operated in an islanded configuration and in which one or more generators may be selectively synchronized based on a common time reference. The common time reference may allow the generators to be synchronized by autonomously driving one or more generators to a specified phase angle and frequency.