| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 700294000 | Abnormal phase, waveform, or polarity condition | 7 |
| 20090216385 | Method and Device for Increasing the Operational Flexibility of a Current-Generating System, in Particular a Gas Turbine or Steam Turbine - Discussed is a method and device for increasing the operational flexibility of a current-generating system with a turboset, comprising a turbine coupled to an electrical generator, a power set point value being predefined, and a future target time at which the turboset is supposed to be at the power set point value, so that a power curve is determined via the power set point value and the target time, the turboset being operated starting from a actual power value at an actual time along the power curve such that the predefined power set point value is reached at the predefined target time. Also discussed is a gas turbine and to a steam turbine in accordance with the above description. | 08-27-2009 |
| 20100087962 | ELECTRICAL DISTRIBUTION FEEDER SYSTEM AND METHOD OF OPERATION - A system and method for operating a transferable feeder system on an electrical distribution system is provided. The system includes a controller that is disposed in communication with switches associated with feeders of a first substation and circuit breakers associated with a second substation. The first substation and second substation are electrically coupled in a manner to allow load transfer from the first substation to the second substation. The system is arranged to disconnect a first pair of circuits from the first substation before connecting the pair of circuits to the second substation while leaving a third circuit coupled to the first substation. During the entire process of transferring load from one substation to the second substation, customer load does not experience any interruption in electrical service. | 04-08-2010 |
| 20130218359 | POWER TRANSMISSION FAULT ANALYSIS SYSTEM AND RELATED METHOD - Systems configured to analyze and/or respond to faults detected during the operation of a power transmission system are disclosed. In one embodiment, a system includes: at least one computing device adapted to monitor operation of a power transmission system by performing actions comprising: processing operational data from a set of line phases in the power transmission system to detect a faulted line phase; opening a circuit breaker for the faulted line phase in response to detecting the fault; determining whether the fault is transient or permanent; and determining if an arc associated with the fault has been extinguished. | 08-22-2013 |
| 20130218360 | AGGREGATE LOAD MANAGEMENT AT A SYSTEM LEVEL - A method for aggregate load management includes determining whether a load capacity limit within a utility power network will be exceeded, selecting an aggregated demand reduction target to remain within capacity bounds if the load capacity limit is to be exceeded, selecting a demand reduction strategy, and sending a control signal that includes a randomized PWM level, based on the strategy, to a controller in a load component of the utility system based on the reduction target. A method for component load management includes receiving a control signal from a utility system based on a utility demand reduction strategy, converting the signal into randomized PWM control of the load component in accordance therewith, receiving an updated control signal based on utility system monitoring of an aggregate load of a component of the utility system, and converting the updated signal into randomized PWM control of the load component in accordance therewith. | 08-22-2013 |
| 20130297088 | METHOD AND APPARATUS FOR PROVIDING A POWER FACTOR CORRECTION (PFC) COMPATIBLE SOLUTION FOR NONSINUSOIDAL UNINTERRUPTIBLE POWER SUPPLY (UPS) - Methods and apparatuses for providing a solution for incompatibility between nonsinusoidal waveform uninterruptible power supply (UPS) systems and active power factor correction (PFC) loads are disclosed. An embodiment of the invention includes generating a nonsinusoidal signal waveform (e.g., a voltage waveform), to be delivered to the load, with a pulse width modulation (PWM) duty width, sampling the nonsinusoidal signal waveform to collect output signal samples, and adjusting the duty width to control the nonsinusoidal signal waveform as a function of the output signal samples to deliver a desired signal characteristic (e.g., RMS signal level) to the load. In embodiments of the invention, the output duty width is adjusted differently in cases of rising and falling power consumption, respectively, by the load. Techniques disclosed herein find broad applicability in UPS systems and inverters and improve efficiency and reliability for end users and utility providers. | 11-07-2013 |
| 20140195062 | METHOD, A SYSTEM, A COMPUTER-READABLE MEDIUM, AND A POWER CONTROLLING APPARATUS FOR APPLYING AND DISTRIBUTING POWER - Embodiments of the invention relate generally to power management and the like, and more particularly, to an apparatus, a system, a method, and a computer-readable medium for providing power controlling functionality to generate configurable power signals and to deliver power during fault conditions. In at least some embodiments, a power control unit can generate power signals having configurable attributes as a function of a mode of operation, a fault type, and the like. | 07-10-2014 |
| 20160072270 | FAULT DETECTION AND ISOLATION USING A COMMON REFERENCE CLOCK - A fault detection and isolation system for distribution electric power lines utilizing a remote reference voltage signal, multiple three-phase current monitors producing asynchronous event data, and a common reference clock. A voltage measurement obtained for a power line at a substation may be synchronized with multiple current phase measurements taken at a power monitoring location along that particular power line. The same voltage measurement may be similarly synchronized with current measurements taken at multiple current monitoring locations along the power line. As a result, the same voltage measurement may be synchronized with current measurements taken multiple tap points along the power allowing a fault on a tapped line segment to be identified, located and isolated. An alternative embodiment utilizes differential current analysis utilizing current measurements from adjacent current monitoring locations correlated to a common reference clock to locate faults and therefore does not require a voltage measurement. | 03-10-2016 |
