Abstract:
A device for harvesting energy from a power line carrying AC current including: a transformer having a core with separate first and second sections, the core being formed of ceramic material or layered nickel alloy tape; a first secondary winding wound around the first section of the core; a second secondary winding wound around the second section of the core; a first DC core-flux control winding wound around the first section of the core; and a second DC core-flux control winding wound around the second section of the core; wherein the core is configured to be in operative communication with a magnetic field radiated from the power line, such that an AC voltage is generated in the first and second secondary windings, and the maximum AC voltage produced by the first and second secondary windings is limited by the first and second DC core-flux control windings.
Abstract:
The invention and its various embodiments are directed to a telemetry system for measuring rotordynamic data from a rotating shaft of interest and methods for using the same. The invention provides a single housing that can include multiple, different sensors that measure various rotordynamic parameters, such as both strain and acceleration, in parallel. A power and data antenna is electrically attached to the housing and the sensors for receiving radio frequency power to power the sensors and to wirelessly transmit data collected by the sensors. Both the housing and the power and data antenna are attached to a rotating shaft and are encapsulated in a fiber coating.
Abstract:
The present invention provides a method for manufacturing a finished metal object or product having a corrosion resistant layer integral to or within a top portion of at least one of its surfaces that would be exposed to a corrosive environment. In one embodiment, the method for manufacturing is directed to a finished metal tubing product having a corrosion resistant layer within its inside surface that is exposed to a fluid and wherein the corrosion resistant layer is a zinc-metal oxide layer, such as a zinc-chromium oxide layer, or a zinc-mixed metal oxide layer. In addition to methods of manufacturing, the present invention provides finished metal objects or products having a corrosion resistant layer integral to or within a top portion of at least one surfaces that would be exposed to a corrosive environment.
Abstract:
An electrical connector for connecting electrical power transmission lines where the electrical connector is capable of conducting 1×106 to 2.5×106 siemens per meter squared (S/m2), and includes a base metal having a surface layer doped with a conductive material dopant. The conductive dopant material improves the reliability and performance of the electrical connector. An electrical power transmission system includes electrical power transmission lines connected by the electrical connector, and a method of joining power transmission lines with the electrical connector.
Abstract translation:一种用于连接电力传输线的电连接器,其中电连接器能够每平方米(S / m 2)传导1×106至2.5×106西门子,并且包括具有掺杂有导电材料掺杂剂的表面层的母材。 导电掺杂剂材料改善了电连接器的可靠性和性能。 电力传输系统包括通过电连接器连接的电力传输线以及将电力传输线与电连接器相连接的方法。
Abstract:
The present application relates to an apparatus and method for detecting defects in composite insulators used in power systems. The apparatus includes a test frame, a hydraulic cylinder connected to a first end of the test frame for imparting a load on a composite insulator, a hammer for imparting excitations into the composite insulator, and a data collection device for collecting frequency responses traveling in the composite insulator as a result of the hammer striking the insulator. The composite insulator is secured between the hydraulic cylinder and a second end of the test frame.
Abstract:
A system and method for post-tensioned tendon monitoring includes at least one optical sensor arranged in monitoring proximity to a post-tensioned tendon, a test instrument in communication with the optical sensor, a processor capable of managing operation of the test instrument, a storage device and a display. They further include a database adapted to contain sensor baseline information and sensor measurement data. The test instrument is capable of sending a first wavelength to the optical sensor and receiving a second wavelength from the optical sensor, wherein at least one of the instrument or the processor is configured to analyze the second wavelength and output sensor measurement data for storage in the database. The processor is configured to calculate an amount of tensile loading which exists in the post-tensioned tendon, based on the sensor measurement data and the sensor baseline data, and to provide an output.
Abstract:
An apparatus and method for continuously monitoring substation disconnects and transmission line switches to detect improper closing of the disconnects or switches is disclosed. The method includes the step of providing an apparatus adapted to measure, process, and transmit data associated with a disconnect or switch. The method further includes the steps of positioning the apparatus on or in close proximity to the disconnect or switch, using the apparatus to collect data of the disconnect or switch and processing the data for transmission to a remote receiver, and transmitting the processed data to a remote receiver.
Abstract:
A system and method for post-tensioned tendon monitoring includes at least one optical sensor arranged in monitoring proximity to a post-tensioned tendon, a test instrument in communication with the optical sensor, and a processor capable of managing operation of the test instrument, a storage device and a display. The system and method further include a database adapted to contain sensor baseline information and sensor measurement data. The test instrument is capable of sending a first wavelength to the optical sensor and receiving a second wavelength from the optical sensor, wherein at least one of the instrument or the processor is configured to analyze the second wavelength and output sensor measurement data for storage in the database. The processor is configured to calculate an amount of tensile loading which exists in the post-tensioned tendon, based on the sensor measurement data and the sensor baseline data, and to provide an output.
Abstract:
An apparatus and method of harvesting power for charging batteries of a robot traversing an overhead transmission conductor is disclosed. The apparatus is adapted to harvest power from the overhead transmission conductor and provide a DC voltage for charging a battery and includes a first shield wire bonded to a structure that is grounded to the earth, a second shield wire isolated from the structure, and a charging station. The first shield wire, second shield wire, structure, and earth form a loop into which induced currents flow. The charging station is electrically connected to the second shield wire and adapted to convert induced currents flowing along the second shield wire into a DC voltage for charging a battery of the charging station.
Abstract:
The present application relates to an apparatus and method for detecting defects in composite insulators used in power systems. The apparatus includes a test frame, a hydraulic cylinder connected to a first end of the test frame for imparting a load on a composite insulator, a hammer for imparting excitations into the composite insulator, and a data collection device for collecting frequency responses traveling in the composite insulator as a result of the hammer striking the insulator. The composite insulator is secured between the hydraulic cylinder and a second end of the test frame.