公开(公告)号：US10120012B2

公开(公告)日：2018-11-06

申请号：US15569900

申请日：2015-05-05

Applicant: ABB Schweiz AG

Inventor： Arkadiusz Burek ,  Jianping Wang ,  Jiuping Pan ,  Reynaldo Nuqui ,  YouYi Li

IPC: G01R31/08 ,  G01R31/11 ,  H02H3/06 ,  H02H7/26 ,  H02H3/087 ,  H02H3/20

Abstract: A method and an apparatus for fault detection in a mixed configuration power transmission line including a plurality of sections arranged between one end of the transmission line and the other end of the transmission line and including at least one overhead line section and at least one cable section are disclosed. Based on a comparison travelling wave voltage or current time derivatives at the one end and the other end of the power transmission line with selected threshold values, it is determined if there is a fault occurring in at least one cable section of the power transmission line. Embodiments utilize amplification of travelling wave voltages and/or currents which may occur at junctions between a cable section and an adjacent overhead line section in determining if the fault occurs in a cable section of the power transmission line.

公开(公告)号：US20190267796A1

公开(公告)日：2019-08-29

申请号：US15906486

申请日：2018-02-27

Applicant: ABB SCHWEIZ AG

Inventor： Reynaldo Nuqui

IPC: H02H7/26 ,  H02H3/16 ,  H02H1/00 ,  G01R31/08

Abstract: The present application is directed to a three phase power transmission system including a first conductor line, a second conductor line and a third conductor line. One or more sensors are configured to detect traveling waves in each of the first second and third conductors. A controller is configured to receive data transmitted by the one or more sensors and determine which of the traveling modal waves is a first metallic mode wave (MM1), a second metallic mode (MM2) wave and/or a ground mode (GM0) wave. The controller is operable to determine which of the conductor lines are faulted based on detection of one or more of MM1 waves, MM2 waves and/or GM0 waves.

公开(公告)号：US11477213B2

公开(公告)日：2022-10-18

申请号：US16148043

申请日：2018-10-01

Applicant: ABB Schweiz AG

Inventor： Jiuping Pan ,  Reynaldo Nuqui ,  Anil Kondabathini

IPC: H04L9/40 ,  H02J3/36 ,  H02J3/00

Abstract: Technologies for providing secure emergency power control of a high voltage direct current transmission (HVDC) system include a controller. The controller includes circuitry configured to receive status data indicative of a present physical status of a power system. The circuitry is also configured to obtain an emergency power control command triggered by a remote source. The emergency power control command is to be executed by an HVDC transmission system of the power system. Further, the circuitry is configured to determine, as a function of the status data, whether the emergency power control command is consistent with the present physical status of the power system and block, in response to a determination that the emergency power control command is not consistent with the present physical status of the power system, execution of the emergency power control command by the HVDC transmission system.

公开(公告)号：US20210063985A1

公开(公告)日：2021-03-04

申请号：US16555051

申请日：2019-08-29

Applicant: ABB Schweiz AG

Inventor： Reynaldo Nuqui ,  Ming Liang

IPC: G05B19/045 ,  G05B19/05 ,  G05B19/04 ,  G06F17/16

Abstract: Systems, methods, techniques and apparatuses of power network state estimation are disclosed. One exemplary embodiment is a method for state estimation in a power network comprising receiving a set of supervisory control and data acquisition (SCADA) information including a power network topology; generating a SCADA state estimation using the set of SCADA information; receiving, with a cloud-computing architecture, a set of PMU phasors; aligning, with the cloud-computing architecture, a timestamp of the SCADA estimation and a timestamp of the set of PMU phasors; updating, with the cloud-computing architecture, the power network topology using the set of PMU phasors; generating, with the cloud-computing architecture, a hybrid state estimation using the updated power network topology, the set of PMU phasors, and the SCADA state estimation; and transmitting the hybrid state estimation to a local control system.

公开(公告)号：US09618586B2

公开(公告)日：2017-04-11

申请号：US14655298

申请日：2013-02-12

Applicant: ABB Schweiz AG

Inventor： Reynaldo Nuqui ,  Jiuping Pan ,  Jianping Wang

IPC: H02H3/06 ,  G01R31/40 ,  G01R31/02 ,  H02H3/087 ,  H02H7/26

CPC classification number: G01R31/40 ,  G01R31/025 ,  H02H3/087 ,  H02H7/268

Abstract: A method to facilitate fault detection in the protected unit after connection to the at least a portion of the power system. A current is sensed in the protected unit during a plurality of different time periods. Compliance of at least one of the sensed currents with a respective first current criteria is determined based on a first current threshold value. On a condition that there is determined that at least one of the sensed currents comply with the respective first current criteria, a fault in the protected unit is detected.

公开(公告)号：US12149070B2

公开(公告)日：2024-11-19

申请号：US16147979

申请日：2018-10-01

Applicant: HITACHI ENERGY LTD ,  ABB Schweiz AG

Inventor： Junho Hong ,  Dmitry Ishchenko ,  Reynaldo Nuqui

IPC: H02J13/00 ,  G01R22/06 ,  G06F30/18 ,  G06F30/20

Abstract: Systems, methods, techniques and apparatuses of nested microgrids are disclosed. One exemplary embodiment is a method for removing false data in a nested microgrid system, the method comprising: calculating a first local state estimation using a first plurality of local measurements and a second local state estimation using a second plurality of local measurements; calculating, with a central control system, a plurality of global state estimations including a first global state estimation a second global state estimation; performing a first false data detection test using the first local state estimation and one global state estimation of the plurality of global state estimations; performing a second false data detection test using the first global state estimation and the second global state estimation; detecting false data; and updating the first global state estimation, the second global state estimation, or the first local state estimation in response to detecting the false data.

公开(公告)号：US20190334932A1

公开(公告)日：2019-10-31

申请号：US15963850

申请日：2018-04-26

Applicant: ABB Schweiz AG

Inventor： Reynaldo Nuqui ,  Junho Hong ,  David Coats

IPC: H04L29/06

Abstract: Technologies for detecting cyber-attacks against electrical distribution devices include a controller. The controller includes circuitry to determine a first measured value of a first operational parameter of a transformer based upon one or more signals received from one or more sensors of the transformer. The circuitry is also to determine a second measured value of a second operational parameter of the transformer based upon one or more signals received from the one or more sensors of the transformer, calculate a first expected value of the first operational parameter based on the second measured value of the second operational parameter and a model of the transformer that relates the first and second operational parameters, compare the first measured value of the first operational parameter to the first expected value of the first operational parameter, and identify when a difference between the first measured value and the first expected value exceeds a first threshold.