1467 results about "Electric distribution network" patented technology

A system and method manage delivery of energy from a distribution network to one or more sites. Each site has at least one device coupled to the distribution network. The at least one device controllably consumes energy. The system includes a node and a control system. The node is coupled to the at least one device for sensing and controlling energy delivered to the device. A control system is coupled to the node and distribution network for delivering to the node at least one characteristic of the distribution network. The node for controls the supply of energy to the device as a function of the at least one characteristic.

A system and method manage delivery of energy from a distribution network to one or more sites. Each site has at least one device coupled to the distribution network. The at least one device controllably consumes energy. The system includes a node and a control system. The node is coupled to the at least one device for sensing and controlling energy delivered to the device. A control system is coupled to the node and distribution network for delivery to the node at least one characteristic of the distribution network. The node controls the supply of energy to the device as a function of the at least one characteristic.

A system for determining service outages and restorations includes an outage management server (OMS) that generates reports of outages and restoration information for metering endpoints. The outages may be caused by faults at various locations in the distribution network. The metering endpoint may include a transmitter having a battery backup that transmits the outage information upon a failure to detect a voltage at the endpoint. The transmission of the information may be filtered based on configurable criteria. The metering endpoints may also inform the OMS when power is restored.

This invention pertains to the use of power line communication in a civil defense alerting system. The idea encapsulates the use of existing technology both in power line communication via a power line modem and network data transfer and applies it to an area to which it has never before been applied. Substantial improvement to both is developed through this invention as the prior art had never included or addressed the need for and ability to communicate over the power lines when no electrical power was flowing from the utility. The invention demonstrates that through a communications network it is possible for a system user to activate a single warning alerter device or a multitude of warning alerter devices that are connected to a standard power distribution network. Overall, this invention provides governmental users a more comprehensive and more fail-safe method and process f warning the public of risks, potentially hazardous situations, and safety instructions to minimize the loss of life and injury.

A power line communications system (PLCS) that provides communications to one or more user devices by repeating data packets on the power distribution network is provided. The PLCS may employ any or all of the MV power line conductors and / or the neutral conductor and be dynamically and remotely transitioned to one of a plurality of potential configurations.

A system and method for recharging a plug-in hybrid vehicle. The system includes a controller that schedules the recharging of the vehicles on local electrical distribution networks. The system arranges the schedule to minimize the demand loading on the local distribution network to more efficiently operate power plants providing electrical power to the distribution networks. A system for collecting charges associated with the recharging of plug-in hybrid vehicles is also disclosed providing for prepaid utility accounts.

A renewable energy resource management system manages a delivery of a power requirement from a multi-resource offshore renewable energy installation to an intelligent power distribution network. The installation includes multiple renewable energy resource components and is capable of variably and independently generating power from each to microgrids comprising the intelligent power distribution network so that the entire power requirement is satisfied from renewable energy resources. An electricity grid infrastructure is also disclosed in which power production is balanced with power consumption so that power storage requirements are minimized.

A method to calculate energy demand in an energy generation, transmission and distribution network including one or more power plants based on different energy source types including renewable energy, a communications system and one or more local consumption metering units. A customer demand profile for one or more customers is provided. A customer-specified proportion of power demand to be supplied from a given energy source type is registered. A total predicted energy demand dependent is calculated in part on an accumulated demand for the given energy source type.

A remotely accessible power controller communicates power reduction command signals by power line carrier (PLC) signaling over existing AC power distribution conductors for automatically disconnecting building lighting loads. Turn-off command signals from a local or remote controller automatically disconnect building lighting loads according to a time-of-day schedule to comply with mandated energy consumption codes applicable to the automatic shutoff of electrical lighting. Load shedding (selective turn off and / or dimming) command signals transmitted from public or private utility companies automatically disconnect or reduce building lighting loads in accordance with load curtailment agreements to limit total connected power consumption below an agreed level. The power controller is connected by a minimum amount of retrofit wiring into an existing end-user alternating current power distribution network, for example, a building power distribution network having AC power conductors that service multiple lighting loads interconnected in one or more power phase groups. Each dimming lighting load is equipped with an addressable dimming module for decoding and executing dimming and turn-on and turn-off power reduction commands. Fluorescent lamps are equipped with addressable electronic dimming ballasts.

A power distribution network system is provided. The system includes a plurality of metering devices configured to generate load side data, a plurality of processing subsystems that is in operational communication with at least one of the plurality of metering devices and a central processing subsystem, wherein the plurality of processing subsystems is configured to receive a subset of the load side data from at least one of the plurality of metering devices, receive supervisory controls and supervisory conditions from the central processing subsystem, determine whether one or more of the supervisory conditions are satisfied based upon the received subset of the load side data, and execute one or more of the supervisory controls based upon the determination whether one or more of the supervisory conditions are satisfied, wherein each of the plurality of processing subsystems is located at a load bifurcation point in the power distribution network.

Installation for harvesting kinetic energy of ocean currents in deepwaters is based on utilization of a semisubmersible platform and the multiple of vertically oriented Darrieus type hydraulic turbines with funnels. The turbines are located bellow sea level on distance sufficient to exclude them from being affected by wave actions. The electric power generators are located on a structure above water and transmit electric power to the shore utilizing flexible cable from semisubmersible to the sea bottom and underwater cable going to the shore, where it connected to the power distributing network. One of the Embodiments of this invention is designed to harvest energy of tides in deepwaters.

A method and system for detecting and locating a single-phase ground fault on a low current grounded power-distribution network, comprising: respectively testing and picking up the voltage signals and current signals at multiple positions on each phase feeder (61), and determining the corresponding transient voltage signals and transient current signals according to the extraction of the voltage signals and the current signals (62); when the change in the transient voltage signals and the transient current signals exceeds a preset threshold (63), synchronously picking up the voltage signals and current signals at multiple positions on a three-phase feeder (64); calculating corresponding zero-sequence voltages and zero-sequence currents according to the voltage signals and current signals synchronously picked up at multiple positions on the three-phase feeder (65), and then extracting the steady-state signal and transient signal of the zero-sequence voltage and zero-sequence current at each position on the three-phase feeder (66); and determining a specific fault location on a faulty line according to the steady-state signal and the transient signal (67). The method effectively detects and displays a single-phase ground fault on a low current grounded power-distribution network.

A device for providing communications through power lines that are communicatively coupled to an electrical distribution network infrastructure and to the internal wiring of at least one customer premises having one or more communication devices therein is provided. One embodiment comprises a coupler configured to be coupled to the electrical distribution network infrastructure, a modem in communication with the coupler to communicate data through the power lines; and a wireless transceiver in communication with said modem. In some embodiments, the electrical distribution network infrastructure may be a structure that uses electricity, such as a street light.

A system for determining a service outages and restorations that includes an outage management server (OMS) that generates reports outages and restoration information for metering endpoints. The outages may be caused by faults at various locations in the distribution network. The metering endpoint may include a transmitter having a battery backup that transmits the outage information upon a failure to detect a voltage at the endpoint. The transmission of the information may be filtered based on configurable criteria. The metering endpoints may also inform the OMS when power is restored. Thus, a utility may better service its customers by focusing manpower efforts using the outage and restoration information generated by the OMS.

Featured are methods for regulating the AC frequency of the electrical power be supplied on an electrical distribution system or grid. Such a method includes electrically coupling an energy storage sub-system to the electrical distribution network, where the energy storage sub-system includes one or more flywheel energy storage systems. Also featured as devices, systems and apparatuses embodying such methodologies or for use in implementing such methodologies of the present invention.

A self-organizing protection coordination system within a power network is provided. The self-organizing protection coordination system in the power network includes a plurality of distribution devices communicatively coupled to each other in a power network. The power network also includes a protection device coupled to each of the plurality of distribution devices configured to transmit power in the distribution network. The power network further includes a controller coupled to each of the plurality of distribution devices. The controller receives communication channel characteristics from a plurality of distribution devices in a distribution network at an interval of time. The controller also computes a delay in time for receiving the communication characteristics. The controller further determines a plurality of reliability indicators at each of the plurality of distribution devices. The controller adjusts tripping characteristics of the plurality of distribution devices to minimize the reliability indicators based on the computed delay.

The invention relates to an intelligent power distribution network and power-consumption real-time monitoring and managing system, which comprises an electric power user centralized-control terminal device, a data transmission device and a system monitoring server; the electric power user centralized-control terminal device is used for receiving power consumption information of an electric power user monitoring device and for outputting a signal for controlling the user monitoring device; the data transmission device is connected downwards with at least one electric power user centralized-user terminal device and is connected upwards with the system monitoring server through a cabled network. The system has the advantages that: instant interaction and information communication between the electric power enterprise and the users are realized, and the information interaction and communication inside the electric power enterprise are realized; emergent item protection of electric network and devices is realized; and the system can instantly collect the running data of all circuits and devices in the electric distribution network, can collect the state data of the device, and can collect the data of measuring devices, running data of communication transmission system and the state data, image data, audio data and video data of the transmission devices.

A dual-polarization wireless base station antenna that implements vertical electrical downtilt and sidelobe reduction using beam steering circuit that includes a variable power divider and a multi-beam beam forming network. The variable power divider includes a single adjustable control element to divide an input voltage signal into a pair of complimentary amplitude voltage drive signals that exhibit matched phase and constant phase delay through the variable power divider. The beam forming network is configured as a double-sided, edge-connected microstrip module mounted to a main panel, which support the antenna elements in a vertical column organized into sub-arrays in a manner that implements sidelobe reduction. The power distribution network connecting the beam steering network to the antenna elements implements beam tilt bias and sidelobe reduction through coordinated phase shifting implemented through transmission media trace length adjustment.

According to an aspect of the invention a method is provided comprising: providing a model for a predetermined location within an electrical power system having therein distributed resources (DR), the model based on known system conditions, the model indicative of first sensed characteristics of the electrical power system at the predetermined location; sensing at the predetermined location characteristics of the electrical power system corresponding to at least some of the first sensed characteristics; determining a status of the electrical power system network indicative of an islanding event in dependence upon sensing and other than in dependence upon other sensed data sensed remotely from the predetermined location; and, controlling a distributed resource in dependence upon the status

A method for determining full chip leakage power first estimates leakage power and dynamic power for each circuit macro. The power supply voltage to each macro is first assumed to be nominal. The power dissipation for each macro is modeled as a current source whose value is the estimated power divided by the nominal power supply voltage. The power distribution network is modeled as a resistive grids. The thermal environment of the IC and its electronic package are modeled as multi dimensional grids of thermal elements. Algebraic multi-grid (AMG) methods are used to calculate updated circuit macro voltages and temperatures. The macro voltages and temperatures are updated and updated leakage and dynamic power dissipation are calculated. Iterations are continued until leakage power converges to a final value.

Digital and analog functionality are separated and optimized in an Ethernet port architecture to free port circuit space for additional desired functionality. A power controller and physical link controller for the port share a high speed communication link to transfer information and control instructions from one to the other. The physical link controller provides digital functionality and processing capabilities that can generate power control instructions sent to the power controller over the high speed link. The power controller provides analog functionality for controlling the power supplied to the network connection and transfers power related information to the physical link controller over the high speed communication link and receives control instructions through a digital interface. The separation of digital of analog functionality simplifies the power control circuitry, removes redundancy, and frees valuable circuit board space for other desired functionality.

Methods, systems, and computer-readable medium are provided for constructing multi-dimensional data models for distribution networks. Geometric features are extricated from a 2D representation of a distribution network comprising a plurality of objects having a relationship to each other within a network. Distribution network elements are generated from the geometric elements according to a network distribution model. The distribution network elements comprise objects and components of the network and include semantic information on associated attributes and relationships thereof. The distribution network element(s) can be validated using rules to detect errors in the generation of the distribution network element(s). The distribution networks element(s) can be refined and a multi-dimensional digital model constructed from the distribution network elements according to the distribution network model.

The invention belongs to the field of analysis on operation of an electric distribution network, and relates to an operating level and power supplying capability evaluation method for an urban electric distribution network. The method comprises the following steps of: based on point view of system engineering and own intensive property of index, clearing up and analyzing existing indexes relative to the operating level and the power supplying capability of the electric distribution network, constructing an electric distribution network operating level and power supplying capability evaluation index system by combining an improved analytic hierarchy process with a fuzzy evaluation method, selecting and design an evaluation index based on expert advice to determine an index range and a weight of the evaluation on the operating level and the power supplying capability of the electric distribution network, determining a rational range of an evaluation index, setting weight of each evaluation index, and finally providing flows and use methods of comprehensive evaluation on the operating level and the power supplying capability of the urban electric distribution network.

Featured are methods for regulating the AC frequency of the electrical power be supplied on an electrical distribution system or grid. Such a method includes electrically coupling an energy storage sub-system to the electrical distribution network, where the energy storage sub-system includes one or more flywheel energy storage systems. Also featured as devices, systems and apparatuses embodying such methodologies or for use in implementing such methodologies of the present invention.

A system for controlling a multi-feed power distribution network is described herein. The network includes a first network sector that includes a first plurality of devices connected to a first power source and a second network sector that includes a second plurality of devices connected to a second power source. The system includes a first controller and a second controller. The first controller is configured to control operation of the first network sector and exchange data with the second controller. The second controller is configured to control operation of the second network sector and exchange data with the first controller. The system is modular and it can be expanded to include additional controllers as necessary. Methods and a computer program product for controlling a multi-feed power distribution network are also described.

Systems and methods for monitoring power in power distribution systems are provided. In one aspect, a system for monitoring power includes a power monitoring device that measures a value of at least one characteristic of power provided to a branch of a power distribution system. The power monitoring device includes an output that provides the value measured. The system further includes a controller having an input to receive the value measured and an output that couples to a first device powered by the branch to send a maximum power signal to the first device to command the first device to operate at a percentage of maximum power.

The method according to the invention is based on a configuration model of a part of an electrical power distribution network, describing a totality of possible configurations of appliances. The configuration model is used to systematically produce (2) all the possible configurations which satisfy a predetermined set of functional requirements, in which case each possible configuration may have at least one associated characteristic value, and a solution configuration is defined which optimizes this characteristic value. It is thus possible to produce an optimum configuration automatically, without any need for expert knowledge about the appliances used in the configuration. In one preferred embodiment of the invention, a simulation model for simulation of a technical response of the solution configuration is produced automatically (3). It is thus possible to test one or more solution configurations by simulations (4), without any need for expert knowledge about the characteristics and simulation models of the appliances used in the solution configuration.

A method and system for programming and implementing automated fault isolation and restoration of high-speed fault detection of circuits in power distribution networks using sequential logic and peer-to-peer communication is provided. High-speed fault detection of circuits in power distribution networks uses protective relay devices (14) segmenting a distribution line (11) having Intelligent Electronic Devices (IED) (22) associated with switching devices (20) communicating peer-to-peer via a communication system (30) to provide fast and accurate fault location information in distribution systems with sequential logic.

The invention discloses a DG (distributed generation)-containing power distribution network distributed protection and control method, and provides a protection and control technical method based on an AFTU (advanced feeder terminal unit) for the phenomenon that the high-permeability distributed power access power distribution network causes great difficulties in traditional power distribution protection and control. The method disclosed by the invention divides the DG-containing power distribution network into multiple areas capable of running as islands in advance according to the DG capacity and load. Circuit breakers and AFTUs are arranged at the feeder outlet, the DG access position and the area boundary, and the AFTUs are connected through an optical network. Each AFTU detects local electric quantity information in real time and performs information interaction with other AFTUs. The method disclosed by the invention quickly positions the fault section according to the local and neighbor electric quantity information, and realizes the fault isolation and island running. A reclosing and island network re-connection control strategy is designed by use of the related AFTU information.