Patent application number | Description | Published |
20090281740 | CABLE FAULT DETECTION - A cable fault detection component ( | 11-12-2009 |
20100066381 | APPARATUS AND METHOD FOR ADAPTIVE FAULT DETECTION IN MV DISTRIBUTION CIRCUITS - A method and a protective device operable to perform the method are provided, wherein the method is for detecting and analyzing faults in a first cable and one or more other cables, which convey power in a three phase feeder system. Current magnitude in the first cable is compared to a threshold level. If the current magnitude exceeds the threshold level, the duration of the condition is measured. If the duration falls within a predetermined duration range, a predetermined time interval is allowed to pass and then a determination is made whether a fault is detected in the one or more other cables. If a fault is not detected in the one or more other cables, then a determination is made that a single phase fault has occurred in the feeder system. | 03-18-2010 |
20100082844 | FIELD DEVICE CONTROLLER ADAPTER - A controller adapter including a controller interface configured to interface with a controller for a legacy field device of an electrical power distribution system, wherein the controller communicates based on a first protocol, a network interface configured to interface with a network common to a plurality of assets of the electrical power distribution system, wherein the network interface communicates based on a second protocol, a mapper that maps information received from the legacy field device controller about the legacy device that to the second protocol, and storage that stores at least one logic function, wherein at least one input and/or output of the logic function is connected to the mapped information. | 04-01-2010 |
20100094573 | Short-Term Load Forecasting Based Capacity Check for Automated Power Restoration of Electric Distribution Networks - A method of forecasting loads on a distribution network is disclosed. The method employs load profiles in combination with short-term load estimations to forecast expected loads on a distribution network. The predicted loads may then be used by power restoration controllers when performing back-feed capacity checks. | 04-15-2010 |
20100161151 | FEEDER AUTOMATION FOR AN ELECTRIC POWER DISTRIBUTION SYSTEM - A soft PLC technology based computer-implemented method includes updating a system configuration incidence matrix for an electric power distribution system based on both a depth-first search of a connectivity matrix for the electric power distribution system and information about the electric power distribution system, wherein the information includes at least status information about one or more switches of the electric power distribution system. The method further includes detecting a fault in the system based on the incidence matrix. The method further includes generating isolation control logic based on the incidence matrix and isolating the fault based on isolation control logic. The method further includes generating restoration control logic based on a breadth-first search of the incidence matrix and restoring the system based on the restoration control logic. | 06-24-2010 |
20110004355 | Hybrid Distribution Network Power Restoration Control - A power outage restoration system manages a power network including a plurality of switching devices. The power outage restoration system includes an outage management system having a network model of said power network. A plurality of local restoration controllers are in communication with the outage management system and each said local restoration controller includes a trimmed network model correlating to a respective area of responsibility. | 01-06-2011 |
20110029148 | LOAD RESTORATION FOR FEEDER AUTOMATION IN ELECTRIC POWER DISTRIBUTION SYSTEMS - A method and system restores power in a power distribution network. The network includes a plurality of power sources, a plurality of loading zones, a plurality of switching devices interconnected between the plurality of power sources and the plurality of loading zones, and an intelligent electronic device associated with each of the plurality of switching devices to control the switching devices. A base network state is defined and a power restoration logic is created for the base network state. A simulation is run for the power restoration logic and then the power restoration logic is transmitted to a power restoration controller which thereafter monitors and controls the intelligent electronic devices. | 02-03-2011 |
20110098988 | Methods and Apparatus for Designing Device-to-Device Configurations Suitable to be used in a Power System - Graphical tool and method for designing device-to-device configurations used in power systems. The tool comprises software program instructions configured to allow a user to graphically associate on a monitor an intelligent electronic device (IED) selected from an available list to a corresponding switching device of the power system. For a first IED associated to corresponding switching device, the user graphically configures on the monitor a related logic by selecting one or more logical inputs/outputs and one or more target IEDs from/to which said logical inputs/outputs are to be received/sent, respectively. | 04-28-2011 |
20120004867 | SYSTEMS AND METHODS FOR CHARACTERIZING FAULT CLEARING DEVICES - Systems and methods for characterizing a device that operated to clear a fault in a power line, such as a power distribution system feeder, are disclosed. Characterizing the device may include receiving measured data corresponding to a current measured along the feeder proximate a substation bus, determining from the measured data that a fault has occurred in at least one phase and has been cleared, subtracting reference data from the measured data to estimate residual fault data, and estimating from the residual fault data a characteristic of the device that operated to clear the fault. The systems may include an Intelligent Electronic Device (IED) and a processor linked to the IED. | 01-05-2012 |
20120004869 | SYSTEMS AND METHODS FOR POWER LINE EVENT ZONE IDENTIFICATION - Systems and methods for power line event zone identification are disclosed. Power line event zone identification may include receiving measured data corresponding to a signal measured on a power line, determining from the measured data that a power line event has occurred, and identifying a probable one of at least two monitoring zones in which the power line event occurred. The at least two monitoring zones may be defined for an Intelligent Electronic Device (IED). The systems may include an IED connected to the power line and a processor linked to the IED. | 01-05-2012 |
20120010830 | SYSTEMS AND METHODS FOR CLASSIFYING POWER LINE EVENTS - Systems and methods for classifying power line events are disclosed. Classifying power line events may include receiving measured data corresponding to a signal measured on a power line, such as proximate a substation bus or along the power line, determining from the measured data that the power line event has occurred, extracting at least one event feature from the measured data, and determining at least partially from the at least one event feature at least one probable classification for the power line event. The systems may include an Intelligent Electronic Device (IED) connected to the power line and a processor linked to the IED. | 01-12-2012 |
20120232713 | Restoration Switching Analysis with Modified Genetic Algorithm - The method of determining back-feed paths is capable of efficiently solving multi-layer restoration problems by minimizing a fitness function using an iterative genetic algorithm. The method optimizes back-feeding of out-of-service areas by minimizing power loss, switching, unserved loads and voltage/current violations. The efficiency of the algorithm is further increased through the use of a reactive Tabu search to prevent duplicate candidate systems. | 09-13-2012 |