公开(公告)号：US20170184657A1

公开(公告)日：2017-06-29

申请号：US15309529

申请日：2015-05-14

Applicant: General Electric Company

Inventor： Prabhakar NETI ,  Yingneng ZHOU ,  Liwei HAO

IPC: G01R31/12 ,  E21B41/00 ,  H01B9/02 ,  E21B17/00 ,  G01R31/02 ,  H02G9/02 ,  E21B47/00 ,  E21B43/12

CPC classification number: G01R31/1272 ,  E21B17/003 ,  E21B41/0092 ,  E21B43/128 ,  E21B47/0007 ,  E21B47/12 ,  F04D13/0693 ,  F04D13/086 ,  G01R31/021 ,  H01B9/02 ,  H02G9/02

Abstract: A system (100, 200) is presented. The system includes a fluid lifting device (102, 202) located inside a well (106, 206), and comprising an electrical motor (108, 208), a three phase cable (114, 214) for coupling the fluid lifting device to a power source (112, 212), at least one high sensitivity differential current transformer (104, 203, 204) for generating imbalance signals (128, 227) representative of an imbalance current in at least one of the electrical motor and the three phase cable, wherein the at least one high sensitivity differential current transformer is disposed such that the at least one high sensitivity differential current transformer surrounds at least a portion of the three phase cable, and a processing subsystem (136, 236) for monitoring the health of at least one of the fluid lifting device and the three phase cable based on the imbalance signals.

公开(公告)号：US20200293033A1

公开(公告)日：2020-09-17

申请号：US16562641

申请日：2019-09-06

Applicant: General Electric Company

Inventor： Lijun HE ,  Honggang WANG ,  Weizhong YAN ,  Liwei HAO

IPC: G05B23/02 ,  G05B15/02 ,  H02J13/00

Abstract: Briefly, embodiments are directed to a system, method, and article for monitoring health of a power system. Input data may be received from one or more sources, where the input data comprises at least measurements of one or more power system assets from one or more phasor measurement units (PMUs). An anomaly may be detected within the power system based on the input data. A determination may be made as to whether the anomaly comprises an asset anomaly of the one or more power system assets. In response to determining that the anomaly comprises an asset anomaly, a characterization may be made as to whether the asset anomaly comprises an equipment anomaly or a sensor anomaly and an alert may be generated to indicate whether the asset anomaly comprises the equipment anomaly or the sensor anomaly based on the characterization.