Abstract: A method for monitoring at least one rotor blade of a wind turbine includes implementing, via a controller, a control scheme for monitoring blade damage of the at least one rotor blade. The control scheme includes monitoring at least one electrical condition of a pitch system of the wind turbine. The method also includes converting the electrical condition(s) of the pitch system into a frequency domain. Further, the method includes determining one or more peaks of the frequency domain around a frequency component related to a natural frequency of the rotor blade. Moreover, the method includes determining a frequency deviation between the one or more peaks of the frequency domain and the frequency component related to the natural frequency of the rotor blade. As such, a frequency deviation outside of a predetermined frequency range is indicative of a rotor blade anomaly. Thus, the method includes implementing a control action when the frequency deviation is outside of the predetermined frequency range.

Abstract: A system and method for monitoring a pitch system of a wind turbine includes monitoring, via one or more first sensors, at least one electrical condition of the pitch system. The method also includes monitoring, via one or more second sensors, at least one mechanical condition of the pitch system. Further, the method includes receiving, via a controller communicatively coupled to the one or more first and second sensors, sensor signals representing the at least one electrical condition and the at least one mechanical condition of the pitch system. Thus, the method includes determining, via the controller, a bearing condition of a pitch bearing of the pitch system based on the at least one electrical condition and the at least one mechanical condition of the pitch system.

Abstract: A method of operating a wind converter is provided. The method includes receiving a plurality of forecasted datasets. The forecasted datasets include event signals for the wind converter during fast transient operating conditions (OCs) and operational data for the wind converter having a low sampling rate. The method further includes estimating a converter life consumption during normal OCs and a converter life consumption during the fast transient OCs. Further, the method includes computing a total converter life consumption of the wind converter. Moreover, the method includes predicting, using a remaining useful life (RUL) prediction module, an RUL for the wind converter based on the total converter life consumption. The method further includes adjusting operation of the wind converter by adjusting operating variables of the wind converter.

Abstract: embodiments are directed to a system, method, and article for monitoring a power substation asset. During an offline analysis mode, training data may be acquired and processing, and one or more classifiers may be generated for an online anomaly detection and localization mode. During the online anomaly detection and localization mode, power system related data may be received from field devices, a state of a substation system and of the power substation asset component and an unclassified state of one or instances may be generated based on the one or more classifiers. An alert may be generated to indicate the state of the substation system and of the power substation asset.

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.

Abstract: Systems and methods for detecting faults are provided. A method for determining a fault condition for a component of a drivetrain in a wind turbine can include receiving an acoustic signal from an acoustic signal measuring device. The method can further include receiving a vibration signal from a vibration signal measuring device. The method can further include analyzing the acoustic signal to determine an analyzed acoustic signal. The method can further include analyzing the vibration signal to determine an analyzed vibration signal. The method can further include determining a fault condition for the component based at least in part on the analyzed acoustic signal and analyzed vibration signal. The fault condition can further be determined based at least in part on an analyzed electrical signal.

Abstract: A system and method for monitoring a pitch system of a wind turbine includes monitoring, via one or more first sensors, at least one electrical condition of the pitch system. The method also includes monitoring, via one or more second sensors, at least one mechanical condition of the pitch system. Further, the method includes receiving, via a controller communicatively coupled to the one or more first and second sensors, sensor signals representing the at least one electrical condition and the at least one mechanical condition of the pitch system. Thus, the method includes determining, via the controller, a bearing condition of a pitch bearing of the pitch system based on the at least one electrical condition and the at least one mechanical condition of the pitch system.

Abstract: A flange assembly for use with a SOFC system includes a first flange, a second flange, and a dielectric element coupled between the first flange and the second flange. The dielectric element includes an outer cylindrical surface and an inner cylindrical surface. The inner cylindrical surface defines a cylindrical region having a circumference. The inner cylindrical surface also defines a channel that extends radially about the circumference of the cylindrical region.

Abstract: The present disclosure is directed to a system and method for detecting damage of a pitch bearing of a wind turbine. The pitch bearing is part of a pitch drive system having a plurality of pitch drive motors. The method includes measuring at least one electrical signal of the pitch drive system. The method also includes processing the electrical signal(s) of the pitch drive system and comparing the electrical signals of the pitch drive system with a baseline threshold. Thus, the method also includes determining whether damage is present in the pitch bearing based, at least in part, on the comparison, wherein the electrical signal(s) exceeding the baseline threshold is indicative of damage in the pitch bearing.

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.

Abstract: Systems and methods for detecting faults are provided. A method for determining a fault condition for a component of a drivetrain in a wind turbine can include receiving an acoustic signal from an acoustic signal measuring device. The method can further include receiving a vibration signal from a vibration signal measuring device. The method can further include analyzing the acoustic signal to determine an analyzed acoustic signal. The method can further include analyzing the vibration signal to determine an analyzed vibration signal. The method can further include determining a fault condition for the component based at least in part on the analyzed acoustic signal and analyzed vibration signal. The fault condition can further be determined based at least in part on an analyzed electrical signal.

Abstract: A flange assembly for use with a SOFC system includes a first flange, a second flange, and a dielectric element coupled between the first flange and the second flange. The dielectric element includes an outer cylindrical surface and an inner cylindrical surface. The inner cylindrical surface defines a cylindrical region having a circumference. The inner cylindrical surface also defines a channel that extends radially about the circumference of the cylindrical region.

Abstract: A device for handling oil pipes and a method for workover includes a base, which includes an oil pipe bearing area extending in a longitudinal direction, the oil pipe bearing area being provided therein with at least one positioning member arranged in a transverse direction perpendicular to the longitudinal direction of the base, for positioning an oil pipe; and a movable oil pipe grasping assembly, which is located above the base and configured to grasp the oil pipe and place the oil pipe in the oil pipe bearing area, or grasp the oil pipe from the oil pipe bearing area and place the oil pipe in an area outside the oil pipe bearing area. The device for handling oil pipes provided by the present disclosure is able to achieve automatic handling of oil pipes, thereby decreasing labor intensity of operators, and improving working efficiency and safety factors of the work.

Abstract: The present disclosure is directed to a system and method for detecting damage of a pitch bearing of a wind turbine. The pitch bearing is part of a pitch drive system having a plurality of pitch drive motors. The method includes measuring at least one electrical signal of the pitch drive system. The method also includes processing the electrical signal(s) of the pitch drive system and comparing the electrical signals of the pitch drive system with a baseline threshold. Thus, the method also includes determining whether damage is present in the pitch bearing based, at least in part, on the comparison, wherein the electrical signal(s) exceeding the baseline threshold is indicative of damage in the pitch bearing.

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.

Abstract: A device for handling oil pipes and a method for workover includes a base, which includes an oil pipe bearing area extending in a longitudinal direction, the oil pipe bearing area being provided therein with at least one positioning member arranged in a transverse direction perpendicular to the longitudinal direction of the base, for positioning an oil pipe; and a movable oil pipe grasping assembly, which is located above the base and configured to grasp the oil pipe and place the oil pipe in the oil pipe bearing area, or grasp the oil pipe from the oil pipe bearing area and place the oil pipe in an area outside the oil pipe bearing area. The device for handling oil pipes provided by the present disclosure is able to achieve automatic handling of oil pipes, thereby decreasing labor intensity of operators, and improving working efficiency and safety factors of the work.