Patent application number | Description | Published |
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 |
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 |
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 |
20120239601 | Restoration Switching Analysis with Genetic Algorithm - A method for generating switching plans to restore power to out-of-service areas after fault isolation through back feeding. A chromosome architecture is defined to create chromosomes representing candidate post-restoration systems. The chromosomes are evaluated are repeatedly genetically altered until an acceptable solution is identified. The solution identifies a plurality of switching operations that back feed power to the out-of-service areas in the most optimal manner. | 09-20-2012 |
20120248874 | METHOD AND APPARATUS FOR IMPROVING THE OPERATION OF AN AUXILIARY POWER SYSTEM OF A THERMAL POWER PLANT - Apparatus and method for controlling power in an auxiliary power system of a thermal power plant having a generator and one or more auxiliary buses. The apparatus includes adjustable speed drives and capacitance sources for connection to the one or more auxiliary buses and sensors for measuring voltage and reactive power on the one or more auxiliary buses. A controller is operable to control the adjustable speed drives and the capacitance sources to control the power factor of the auxiliary power system, while providing steady state voltage regulation and dynamic voltage support. | 10-04-2012 |
20130282189 | DISTRIBUTED ELECTRICAL POWER NETWORK MODEL MAINTENANCE - Among other things, one or more techniques and/or systems are provided for maintaining a distributed electrical power network model associated with a power grid. A global power network model, comprising a global logical representation of the power grid, may be maintained at a network control center configured to manage one or more substations associated with the power grid. The network control center may host grid management applications that may utilize the global power network model. A local power network model, comprising a local logical representation of a power grid territory within the power grid monitored by a substation, may be maintained at the substation. The substation may host one or more local grid management applications that may utilize the local power network model. The global power network model and the local power network model may be synchronized in response to events occurring within the power grid. | 10-24-2013 |
20140091630 | MEDIUM VOLTAGE DC COLLECTION SYSTEM WITH POWER ELECTRONICS - A power generation system includes at least one generator that generates a medium voltage direct current that has a positive DC voltage output and a negative DC voltage output. The system also provides a medium voltage DC (MVDC) cable system with a positive pole cable and a negative pole cable, wherein the positive pole cable is connected to the positive DC voltage output and the negative pole cable is connected to the negative DC voltage output. A substation is connected to the MVDC cable system and includes at least one DC/DC step-up converter to step-up the medium voltage direct current to a high voltage direct current. | 04-03-2014 |