Hitachi Energy Switzerland Ag

Abb Power Grids Switzerland Ag

Abb Schweiz Ag

Hitachi Energy Ltd

Other

Abb Technology Ag

Luiz V Cheim

Poorvi Patel

Thomas A Fuhlbrigge

William John Eakins

Biao Zhang

Gregory A Cole

James Stoupis

Harshang Shah

Daniel T Lasko

Gregory F Rossano

Saumya Sharma

Andrew Salm

Carlos Winsor Morato

Sanguen Choi

Lan Lin

Aldo Dagnino

Sangeun Choi

Asim Fazlagic

George Q Zhang

Xiaoming Feng

Stefan Rakuff

Harald Josef Staab

Oleg Kouzmine

Robert Wueest

Pierre Lorin

Marek Budyn

Harald Staab

Nolan W Nicholas

Carlos W Morato

Lony Tehini

Craig Stiegemeier

Stephen Pearce

An inspection device for use in a fluid container having at least an opening includes a housing sized to fit through the opening. The housing has at least two fluid flow channels extending therethrough, each having an inlet and an outlet, and a pump maintained in the housing within each fluid flow channel. The pumps are selectively controlled to maneuver the housing within the fluid container. The inspection device continues with a method of in-situ inspection of a container having at least one opening to receive a fluid, that includes up-loading a virtual model of the container into a computer, inserting the device into the container, generating a position signal by the device and receiving the position signal on a computer. A virtual image of the device in the virtual model of the container is generated to determine an actual position of the device within the container.

Device and method for transformer in-situ inspection

An inspection system for inspecting a machine includes an inspection vehicle constructed for wireless operation while submersed in a dielectric liquid medium. The inspection vehicle is self-propelled. A controller is operative to direct the activities of the inspection vehicle. A plurality of status interrogation systems is disposed on the inspection vehicle. The status interrogation systems are operative to capture inspection data regarding a plurality of inspection procedures performed on the machine.

Systems and methods for inspecting a machine

A method of analyzing dissolved gas in an oil-filled transformer includes determining a centroid of a polygon that represents a plurality of dissolved gas concentrations. A fault region in which the centroid of the polygon is located is determined, where the plurality of fault regions are defined in a composite fault region map that is a composite of a Duval Pentagons 1 and 2. The method classifies a fault experienced by the transformer based on the determined fault region within the composite fault region map. The classification is done by a machine learning classification technique. Further embodiments classify faults based on dissolved gas levels without determining a centroid of a polygon representing the dissolved gas levels. Related systems are also disclosed.

Systems and methods for dissolved gas analysis

A method of estimating future aging of a transformer includes generating probabilistic models of factors that affect effective aging of the transformer, generating probabilistic profiles of the factors that affect effective aging of the transformer based on the probabilistic models, generating expected hot spot profiles from the probabilistic profiles, simulating a plurality of aging scenarios of the transformer based on the expected hot spot profiles and ambient temperature profiles, and estimating future aging of the transformer from the plurality of aging scenarios.

Probabilistic determination of transformer end of life

A submersible inspection drone used for inspection of liquid cooled electrical transformers can include a number of separate cameras for imaging the internal structure of the transformer. The submersible can be configured to communicate to a base station using a wireless transmitter and receiver. The cameras on the submersible can be fixed in place and can be either static or motion picture cameras. The submersible can include an input/output selector capable of switching between the camera images, either through commanded action of a user or through computer based switching. In one form the input/output selector is a multiplexer. The base station can be configured to display images from the cameras one at a time, or can include a number of separate viewing portals in which real time images are displayed. The base station can include a demultiplexer synchronized to the multiplexer of the submersible.

Submersible inspection device and wireless communication with a base station

A transformer includes a tank with an insulating fluid, a radiator for cooling the insulating fluid, and one or more sensors arranged to measure insulating fluid properties in a location where the insulating fluid has a lower temperature.

System for sensor utilization in a transformer cooling circuit

A tether control system for an inspection vehicle operable in a housing having a liquid medium is disclosed in the present application. The tether system includes a tether connected between the inspection vehicle and an electronic controller. A controllable buoyancy system associated with the tether is operable for moving the tether in a desired location. The controllable buoyancy system includes one or more floating bodies having a propulsion system and one or more buoyant elements having variable buoyancy capabilities.

Tether for an inspection vehicle

A submersible remotely operable vehicle used for inspection of liquid cooled electrical transformers can include a number of separate cameras and sensors for mapping and navigating the internal structure of the transformer with liquid coolant remaining in the transformer. The remotely operable vehicle can be wirelessly controlled to perform various inspection functions while the number of cameras provide video streams for processing to produce a three dimensional field of view based on an observation position of the remotely operable vehicle.

Submersible inspection vehicle with navigation and mapping capabilities

A submersible vehicle which includes a plurality of cameras can be used to collect visual images of an object of interest submerged in a liquid environment, such as in a tank (e.g. transformer tank). In one form the submersible vehicle is remotely operated such as an ROV or an autonomous vehicle. Image information from the submersible along with inertial measurements in some embodiments is used with a vision based modelling system to form a model of an internal object of interest in the tank. The vision based modelling system can include a number of processes to form the model such as but not limited to tracking, sparse and dense reconstruction, model generation, and rectification.

Submersible inspection device and vision based modelling

An inspection vehicle operable for performing one or more maintenance and repair operations in a housing filled at least partially with a liquid medium is disclosed in the present application. The inspection vehicle includes a propulsion device operable in the liquid medium and includes at least one sensor operable for sensing and transmitting data associated therewith. A control system including an electronic controller is in electronic communication with the inspection vehicle to transmit and receive communication signals to/from the inspection vehicle. One or more maintenance tools operable with the inspection vehicle are configured to perform maintenance and/or repair operations within the liquid filled housing.

Inspection vehicle with maintenance tools

A method and system for acquiring, manipulating and displaying inspection data obtained by sensors associated with submersible inspection vehicle within a housing having a liquid medium is disclosed in the present application. A control system including an electronic controller is operably coupled with the inspection vehicle and is configured to display data transmitted from the sensor and overlay input data from an operator on the display to facilitate real time analysis during the inspection event.

System and method for handling and charting data obtained by an inspection vehicle

An Artificial Intelligence/Machine Learning driven assessment system for monitoring electrical equipment assets includes a computer system that is configured to receive user-provided asset data associated with operation of a plurality of electrical equipment assets operated by a plurality of users/owners, where the identity of any asset in the database is restricted and only known to the user that owns/operates the asset. The computer system is configured to analyze the user data in conjunction with a pooled knowledge database so as to generate courses of action or assessments for the monitored electrical equipment assets and to update the analysis process based on feedback from a comparison of the assessment or course of action with an actual outcome.

Artificial intelligence/machine learning driven assessment system for a community of electrical equipment users

A launching tube for use with a liquid filled tank can be sized to accommodate a submersible vehicle for dispensing into the liquid tank. The tank can be an electrical transformer or any other liquid containing tank such as but not limited to a chemical tank. The launching tube can include a valve for insertion into a launching chamber, and a tank side valve for launching of the submersible into the tank. In one form the launching tube includes an antenna for communication with the submersible and/or a base station. The launching tube can also include a sensor such as a camera, as well as an agitator. The agitator can be used to facilitate bubble removal from the inside of the launching tube.

Liquid tank inspection including device for launching submersible

Among other things, one or more techniques and/or systems are provided for providing recommendations to address design flaws of power system equipment and/or model design flaws for equipment model types of power system equipment. For example, historical sensor data and/or historical field test data, collected from power system equipment, may be analyzed to identify a design flaw of the power system equipment (e.g., a design flaw of a seal ring). A redesign cost to redesign the power system equipment, a failure impact of a failure from the design flaw, a maintenance repair and/or replacement cost, a manufacture alternative component cost to use an alternative component for manufacturing the power system equipment, and/or other factors may be taken into account to crate and provide a recommendation to address the design flaw.

Power system equipment design flaw identification

A deployment system for an inspection vehicle operable in a housing having a liquid medium is disclosed in the present application. The deployment system includes a mount connectable to the housing through an aperture formed in a wall thereof. An extendable arm is connected to the mount and positioned within the housing. A tether is slidably coupled to the extendable arm and adapted to connect with the inspection vehicle. A control mechanism is operable to control deployment of the tether and the position of the extendable arm.

Growing community of inventors

St. Charles, MO, United States of America

Luiz V Cheim