公开(公告)号：US20170074941A1

公开(公告)日：2017-03-16

申请号：US15335073

申请日：2016-10-26

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Shantanu Som ,  Zeeky Ashiono Bukhala

IPC: G01R31/34 ,  G01R31/02 ,  G01R19/02

CPC classification number: G01R31/346 ,  G01R19/02 ,  G01R31/02 ,  G01R31/343

Abstract: Aspects of the invention provide a system and method for detecting inter-circuit faults within a generator stator. In one embodiment, a computer system includes: a sampler for sampling phase voltages and phase currents of a generator stator; a plurality of pre-defined blocks for enabling, based on the sampled phase voltages and currents, an inter-circuit fault detection scheme; a level detection block for determining, in response to the enabled inter-circuit fault detection scheme, a plurality of differences between the sampled phase voltages; and a comparison logic device for comparing, in response to the enabled inter-circuit fault detection scheme, each of the differences of the sampled phase voltages and determining, based on the differences, an inter-circuit fault within at least one phase of the generator stator. The system may also include a negative sequence voltage block for detection of inter-circuit fault within a generator stator.

Abstract translation: 本发明的方面提供一种用于检测发电机定子内的电路间故障的系统和方法。 在一个实施例中，计算机系统包括：采样器，用于对发电机定子的相电压和相电流进行采样; 多个预定义块，用于基于采样的相电压和电流来实现电路间故障检测方案; 电平检测块，用于响应于所启用的电路间故障检测方案，确定所述采样相电压之间的多个差; 以及比较逻辑器件，用于响应于所启用的电路间故障检测方案，比较所述采样相电压的每个差异，并且基于所述差异确定所述发生器的至少一个相位内的电路间故障 定子。 该系统还可以包括用于检测发电机定子内的电路间故障的负序电压块。

公开(公告)号：US10310017B2

公开(公告)日：2019-06-04

申请号：US15335073

申请日：2016-10-26

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Shantanu Som ,  Zeeky Ashiono Bukhala

IPC: G01R19/02 ,  G01R31/02 ,  G01R31/34

Abstract: Aspects of the invention provide a system and method for detecting inter-circuit faults within a generator stator. In one embodiment, a computer system includes: a sampler for sampling phase voltages and phase currents of a generator stator; a plurality of pre-defined blocks for enabling, based on the sampled phase voltages and currents, an inter-circuit fault detection scheme; a level detection block for determining, in response to the enabled inter-circuit fault detection scheme, a plurality of differences between the sampled phase voltages; and a comparison logic device for comparing, in response to the enabled inter-circuit fault detection scheme, each of the differences of the sampled phase voltages and determining, based on the differences, an inter-circuit fault within at least one phase of the generator stator. The system may also include a negative sequence voltage block for detection of inter-circuit fault within a generator stator.

公开(公告)号：US08773829B2

公开(公告)日：2014-07-08

申请号：US13665584

申请日：2012-10-31

Applicant: General Electric Company

Inventor： Shantanu Som ,  Sumit Bose

IPC: H02H3/00

CPC classification number: H02H7/06 ,  H02H3/04 ,  H02P9/10 ,  H02P29/0243

Abstract: A generator protection device is provided. The generator protection device includes a safety factor estimation module configured to estimate a safety factor as a function of a terminal voltage (VS) of a source-end generator, and a swing center voltage (SCV) between the source-end generator and a receiving-end generator. The system further includes a comparison module configured to compare the estimated safety factor with a defined safety threshold limit, and a decision module configured to trigger an alarm or a generator circuit breaker trip action or both, based on the comparison between the estimated safety factor and the defined safety threshold limit.

Abstract translation: 提供发电机保护装置。 发电机保护装置包括安全系数估计模块，其被配置为估计作为源端发生器的端电压（VS）的函数的安全系数以及源端发生器与接收端之间的摆动中心电压（SCV） -end生成器。 该系统还包括比较模块，其被配置为将所估计的安全系数与定义的安全阈值极限进行比较，以及判定模块，其被配置为基于所估计的安全系数与所述估计安全系数之间的比较来触发警报或发电机断路器跳闸动作或两者 定义的安全阈值限制。

公开(公告)号：US20140118864A1

公开(公告)日：2014-05-01

申请号：US13665584

申请日：2012-10-31

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Shantanu Som ,  Sumit Bose

IPC: H02H7/06

CPC classification number: H02H7/06 ,  H02H3/04 ,  H02P9/10 ,  H02P29/0243

Abstract: A generator protection device is provided. The generator protection device includes a safety factor estimation module configured to estimate a safety factor as a function of a terminal voltage (VS) of a source-end generator, and a swing center voltage (SCV) between the source-end generator and a receiving-end generator. The system further includes a comparison module configured to compare the estimated safety factor with a defined safety threshold limit, and a decision module configured to trigger an alarm or a generator circuit breaker trip action or both, based on the comparison between the estimated safety factor and the defined safety threshold limit.

Abstract translation: 提供发电机保护装置。 发电机保护装置包括安全系数估计模块，其被配置为估计作为源端发生器的端电压（VS）的函数的安全系数以及源端发生器与接收端之间的摆动中心电压（SCV） -end生成器。 该系统还包括比较模块，其被配置为将所估计的安全系数与定义的安全阈值极限进行比较，以及判定模块，其被配置为基于所估计的安全系数与所述估计安全系数之间的比较来触发警报或发电机断路器跳闸动作或两者 定义的安全阈值限制。