1093 results about "Electricity distribution systems" patented technology

A power distribution system / method implementing Internet based access to hybrid home automation networks is disclosed. The system utilizes a smart gateway power controller (SGPC) configured for single / multi-gang wallplate installation to selectively switch an AC power source to a load device under switched control and / or local / remote network commands that may be routed through a variety of network interfaces and protocols present within a home or other structure-local communications network. SGPC configurations may be nested within a home automation network to permit separation of control for load devices within a common home automation environment. Present invention methods may include routing protocols between disparate home automation networks as well as remote access protocols that permit control of disparate home automation networks via the Internet using a wide variety of remote access interfaces including mobile devices, tablet computers, laptops, desktop computers, and the like.

There is provided herein methods and apparatus for apparatus for controlling the interconnection of an auxiliary AC generator with an electrical system, such as an electrical distribution system, e.g., a utility grid. A measuring circuit measures the frequency of an auxiliary AC generator and the phase angle between one voltage phase of the generator and the correspondent voltage phase of the electric utility's electricity supply lines, i.e., the grid, each of which are averaged and filtered. The measured frequency of the auxiliary AC generator is matched to the frequency of the electrical system and the measured phase angle of the generator is matched to the electric utility's electricity supply lines. Once matching is achieved to within a defined tolerance, interconnecting contactors are closed.

An arc fault detector system detects arcing faults in an electrical distribution system by monitoring one or more conductors and producing an input signal representing one or more electrical signal conditions in the circuit to be monitored. This input signal is processed to develop signals representing the electrical current flow through the monitored circuit and broadband noise signal components. The system analyzes these signals to determine whether an arcing fault is present, and if so, outputs a trip signal which may be used directly or indirectly to trip a circuit breaker or other circuit interruption device.

An arc fault detector system detects arcing faults in an electrical distribution system by monitoring one or more conductors and producing an input signal representing one or more electrical signal conditions in the circuit to be monitored. This input signal is processed to develop signals representing the electrical current flow through the monitored circuit and broadband noise signal components. The system analyzes these signals to determine whether an arcing fault is present, and if so, outputs a trip signal which may be used directly or indirectly to trip a circuit breaker or other circuit interruption device.

The invention discloses a fracturing well site layout system. The fracturing well site layout system comprises a gas source, a processing device, a power supply system, a power distribution system, anelectric drive fracturing device, an electric drive sand mixing device, a sand supply device, a liquid supply device, an instrument device and a high-low pressure manifold, wherein the gas source provides fuel needed by power generation for the power supply system after being processed by the processing device; the power supply system drives the electric drive fracturing device and the electric drive sand mixing device through the power distribution system; the sand supply device provides fracturing sand needed by mixing for the electric drive sand mixing device; the liquid supply device provides needed liquid for the electric drive sand mixing device; the output end of the electric drive sand mixing device is connected with the electric drive fracturing device through the high-low pressure manifold; the electric drive fracturing device communicates with a well mouth through the high-low pressure manifold; and the instrument device is used for remotely controlling the electric drive fracturing device and the electric drive sand mixing device. The fracturing well site layout system has the beneficial effects that the occupied area is smaller, the output power of the single electricdrive fracturing device is larger, wiring of the whole well site layout is simpler, the wiring time is shorter, and application is more flexible.

An electrical fault detector system detects electrical faults in an electrical distribution system by monitoring one or more conductors and producing an input signal representing one or more electrical signal conditions in the circuit to be monitored. This input signal is processed to develop a first signal representing the electrical current flow through the monitored circuit and a second signal representing signal components in a selected frequency range typical of arcing faults, and which exceed a predetermined threshold. The system also detects ground faults in the circuit being monitored.

A stabilized electric distribution system for use in a vehicle having electric assist. The system electrically couples an electric assist bus to an accessory load bus while protecting the first electrical bus from electric assist and regenerative braking induced voltage variations. An energy management controller selectively controls each of a electric motor / generator, a DC / DC converter, and an alternator to affect electric energy distribution within the system. Preferably, the electric energy distribution is controlled to maintain the first electrical bus voltage within a predefined voltage range.

A system for identifying an arcing event in electrical distribution systems is provided. The system comprises a sensor configured to detect ultraviolet light and to generate a signal indicative of the arcing event propagating from the electrical distribution system. A processor coupled to the sensor and configured to analyze an ultraviolet light characteristic from the signal and generate an arc fault signal. A protective device configured to receive the arc fault signal and to mitigate the arcing event in the electrical distribution system.

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.

A system for operating a power line communication system is provided. One embodiment is comprised of a plurality of network elements, which may take the form of repeaters, bypass devices, backhaul devices, wireless backhaul devices, enhanced bypass devices, communication interface devices and others. In one embodiment, two groups of network elements in the same electrical distribution system are isolated except for a selected communication link.

The invention provides an intelligent high-voltage management system of an electric car. According to the intelligent high-voltage management system of the electric car, a signal collecting system collects the car operation state, failure detection object state and car posture state in real time; an intelligent high-voltage control unit receives an instruction of a vehicle control unit (VCU) and / or a battery management system (BMS), enables a high-voltage electricity distribution system to normally distribute electricity to vehicle high-voltage equipment and feeds back the execution result to the VCU and / or the BMS; meanwhile, fault diagnosis and detection are carried out on the high-voltage electricity distribution system according to collected data and received vehicle real-time interaction data; the fault type is determined according to a preset fault database, the high-voltage electricity distribution system is made to execute the high-voltage electricity on-off control logic under the preset fault types, and the diagnosis result is stored and sent; the high-voltage electricity distribution system caries out high-voltage electricity distribution, high-voltage electricity on / off control, circuit overcurrent protection and high-voltage pre-charging on all high-voltage devices of the car according to the instruction of the intelligent high-voltage control unit. The intelligent high-voltage management system of the electric car realizes intelligent management of high-voltage electricity of the whole car, and better improves the high-voltage safety of the electric car.

The invention belongs to the field of power system reliability estimation, and relates to a method for estimating the reliability of an electric distribution system containing distributive wind power, photovoltaic and energy storage devices. The method comprises the following steps of: (1) acquiring configuration parameters of the electric distribution system; (2) forming a fault result list; (3) generating an energy storage charging and discharging state periodic list; (4) obtaining a normal running time TTF according to the fault rate of elements; (5) finding out an element which has TTFmin; (6) obtaining a fault time TTR according to the repair rate of the element, and calculating an energy storage state at the TTFmin moment; (7) searching the fault result list to determine a power failure situation of a load point in a non island area; (8) for an island area, calculating a draught fan real-time value, a photovoltaic real-time value and a load real-time value; (9) performing load attenuation on each island and recording the power failure situation of the load point in the island; (10) calculating the state variation of the energy storage of the island; (11) generating novel running time for the element and boosting a simulation clock to TTFmin+TTR; (12) searching for an element which is faulted at first again, and repeating the step (12) if the fault moment is less than the simulation clock, and if the fault moment is not less than the simulation clock, executing the step (13); and (13) judging whether the simulation clock is equal to a scheduled time length, and returning to the step (6) if the simulation clock is not equal to a scheduled time length; and if the simulation clock is equal to a scheduled time length, calculating a reliability index. By the method, the reliability level of the distribution system containing the distributive wind power, photovoltaic and energy storage devices can be estimated quantitatively.

The present invention is implemented by deploying an enhanced ground fault detection and location apparatus and by using the apparatus in conjunction with specific circuit analysis methods, using the information generated by the ground fault detection and location apparatus. The ground fault detection and location apparatus comprises the functionality of a voltmeter, an ammeter, a frequency generator, and a variable power supply, thereby providing for a variety of signals and analyses to be performed on a unintentionally grounded circuit in an ungrounded AC or DC power distribution system. The apparatus includes a main unit and a remote unit, which may be a portable hand-held unit. In a first mode, the apparatus of the present invention can be used to detect ground faults. By switching to a second mode, the apparatus of the present invention can be used to locate ground faults. The methods of the present invention involve the generation of various signals by the main ground fault detection and location unit. The generated signals are introduced into the electrical distribution system and monitored by various means, including one or more remote units. By analyzing the system-level response to the generated signals, the specific location of the ground fault or faults can be more readily ascertained, thereby promoting rapid and efficient repair and recovery practices. The apparatus of the present invention may be implemented as a dedicated, permanent installation or as a temporary portable system. Additionally, the system may be implemented as an automatic computer-controlled ground fault location and detection system.

A system and method are provided for an energy distribution system having at least one energy storage system and at least one renewable energy resource. The method includes determining distribution optimal power flow optimization models of components of the distribution system. The components at least include the at least one energy storage system and the at least one renewable energy resource. The method further includes generating a composite model of the distribution system by integrating therein the distribution optimal power flow optimization models. The method also includes optimally scheduling, using a processor-based scheduling optimizer, an operation of resources in the distribution system using at least one of a fixed-window iterative optimization technique and a rolling stochastic optimization technique applied to the composite model.

An electrical power distribution system automatically limits the number of substantially similar or identical power cable assemblies that are electrically energizable from a power source. A control unit is connected between the power source and the power cable assemblies, and limits the number of power cable assemblies that can be energized in the system by sensing the voltage in a sensing circuit. An applied voltage in the sensing circuit changes in a predictable manner corresponding to the number of power cable assemblies that are electrically connected in the circuit. Each power cable assembly includes an impedance element that is added to the sensing circuit when the corresponding power cable assembly is coupled to the system, and once the detected voltage is beyond a predetermined threshold value, the control unit will ensure that the power cable assemblies are not energized by the power source.

A renovation load center includes an enclosure, a branch circuit assembly mounted in the enclosure, and two renovation terminal blocks having a side and a plurality of first terminations electrically connected to at least some of the incoming lines and the branch conductors of a distribution system. Each renovation terminal block includes a plurality of second terminations. Each of the first terminations is electrically connected to a corresponding one of the second terminations. Each pair of one of the first terminations and the corresponding one of the second terminations is disposed on the same side of the renovation terminal block and is electrically isolated from at least one adjacent pair of another one of the first terminations and a corresponding one of the second terminations. A plurality of cables are electrically connected between the second terminations and the branch circuit assembly.

Methods and systems for detecting a falling power line in a power transmission or distribution system are described. Electrical measurements at various points in the power distribution system are used to detect changes in a power line indicating that the conductor has broken or become disconnected. Upon detection, control mechanisms are used to deenergize the conductor while the conductor is falling and / or before it contacts the ground.

A two-way distribution, charging, and vending system permits a subscriber to exchange one or more partially or completely discharged portable electric energy storage devices for a comparable number of charged portable electric energy storage devices. The two-way distribution, charging, and vending system includes a number of charging modules, each with a dedicated power converter, communicably coupled to at least one two-way distribution system controller and to a power distribution grid. Upon receipt of a discharged portable electric energy storage device, the at least one two-way distribution system controller validates a manufacturer identifier and a subscriber identifier stored in a nontransitory storage media carried by the discharged portable electric energy storage device. Responsive to a successful authentication and validation, the at least one two-way distribution system controller dispenses a charged portable electric energy storage device to the subscriber.

A power distribution system that can be used in naval ships and submarines includes a first propulsion drive system including a propulsion motor having superconducting (preferably high temperature superconducting (HTS)) rotor windings and a power converter. A first propulsion power generation system supplies power to the first propulsion drive system and includes a generator having superconducting (preferably HTS) rotor windings and a power converter. A first power generation system includes a power source for supplying power to a first service distribution system that includes a dc distribution busbar (optionally implemented using HTS cabling or busbar) for carrying a distribution voltage and a distribution current, and a switchboard that includes protective switchgear with contacts. A power converter is used to connect the power source to the switchboard. The power converters are regulated according to a power source foldback and stabilizing characteristic. An electric load is supplied with power from a zonal power supply unit that forms part of a zonal power distribution sub-system. The electric load and the propulsion motor are regulated according to a load shedding and stabilizing characteristic.

The invention discloses a coordinated planning method for a power distribution system and an electromobile charging network. The coordinated planning method comprises the following steps that first, a planning strategy of distributed charging piles based on node charging demands is put forward, and then a multi-objective optimization model of coordinated planning of the power distribution system and the electromobile charging network is established, wherein the objective of the model is that the sum of the investment cost and the system network loss is minimal, and the traffic flow intercepted and captured by quick charging stations is maximal. In the developed model, a traffic flow allocation model based on user balance is introduced to analyze the traffic flow intercepted and captured by the quick charging stations, and the number of devices of all the quick charging stations is allocated by the correlation theory of the queueing theory according to the rule that the average charging waiting time of vehicle owners is not beyond a certain threshold value at traffic rush hours. According to the method, a series of Pareto nondominated solutions can be obtained, planning personnel or investors can balance all the nondominated solutions according to practical engineering and select the most reasonable scheme, and therefore the investment efficiency is improved.

An exemplary method and apparatus are directed to distributed waveform recording for fault monitoring and analysis of a fault condition in a power distribution system. One or more instrument transformers along with merging units and a plurality of Intelligent Electronic Devices (IEDs) distributed in a plurality of hierarchical levels. The distributed waveform recording corresponds to a fault event at different levels in the power distribution system data is carried out by at least two devices configured to detect an event for recording and perform waveform recording. The data used for waveform recording and the data for detection of the event are based on a single stream of the sampled measured value data and are thereby are time synchronized.

A electricity management device increases a counter value as an electric vehicle is charged from grid power that is supplied from an electrical grid, retains the counter value when the electric vehicle is charged from electricity generated by an electricity generation device, and reduces the counter value as electricity in the electric vehicle is discharged to a distribution board.

A system for fault prediction in electrical systems. It includes a network of recording nodes that transmit data to multi-channel recorder. The nodes monitor power quality based on a number of system parameters. These data are assembled into data blocks and are analyzed to determine load factors for the system over time. Data blocks are collected over 22 cycle periods and are evaluated against a derived standard deviation factor for the given system. The standard deviation is used to determine alert and alarm levels. The constant monitoring allows the system to alert workers of a potential upcoming fault in one or more system components. In this way repairs can be made before the component fails and the system experiences a fault condition.

Some embodiments provide a systems, methods, and devices for providing power to recharge portable electronic devices through a distributed network of portable power stations that provide power on an advertising and / or fee basis. In some embodiments, the power distribution system includes a server and multiple distributed portable power stations. The server communicates with electronic devices in order to receive a request to unlock power from a particular power station. The server sends an advertisement and a code to unlock the particular power station. In some embodiments, the server process payment information and sends the unlock code. Each of the portable power stations includes multiple charging interfaces and a lockable power supply that is unlocked using the server provided code. When unlocked, the power station recharges batteries of any electronic devices that are connected to any of the charging interfaces of the power station.

The invention discloses an active power distribution network multi-period island operation method giving consideration to an intelligent soft switch, and the method comprises the steps: inputting a selected power distribution system structure and parameters; building an active power distribution network multi-period island operation model; carrying out the linearization, second-order conic model transformation and rotating conic model transformation of a target function and nonlinear constraint conditions in the active power distribution network multi-period island operation model according toa standard form of conic planning; employing a conic planning solving method for solving a second-order conic planning model, and obtaining the recovery load coefficient of each node, the output power and control modes of controllable and uncontrollable distributed power supplies, the charging and discharging power and load states of an energy storage system and the transmission power of the intelligent soft switch. and outputting a solving result. The method gives full consideration to the impact on the island operation of a power distribution system from the access of the intelligent soft switch, and the second-order conic planning model for the active power distribution network multi-period island operation, and the problem of the active power distribution network island operation is solved.

The invention discloses a power distribution line tower span panning method based on load reliability. The randomness of the maximum wind velocities of typhoons and the frequency of typhoon landing are taken into account; an overhead power distribution line load reliability calculation model is built based on the type I distribution of the maximum wind velocity values of typhoons; with the whole life cycle cost of a power distribution system as a target function and a pole model number and a span length as decision variables, an overhead power distribution line tower and span planning model is built. The power distribution line tower span panning method based on the load reliability is characterized in that the tower and span planning model with the whole life cycle cost of the power distribution system as the target function and the line span as a constraint condition is built by taking the power interruption cost due to line pole collapse and breakage faults into account in combination with a tower investment cost and a maintenance cost. Based on the planning method, the planning personnel can control the load risk level of an overhead power distribution line visually, and the optimal scheme considering both economic efficiency and reliability can be obtained.