437 results about "Electrical network" patented technology

The present invention relates to the technical field of power systems and operations research. Disclosed are a method and system for coordinated source-grid-load-storage dispatch optimization during post-disaster restoration of a power distribution system. The method comprises: acquiring network topology constraint data for a power distribution system, wherein network topology constraints for the power distribution system comprise a virtual network topology constraint for the power distribution system, a geometric network topology constraint for the power distribution system, and an electrical network topology constraint for the power distribution system; on the basis of fault situations of a power source device, a load device and an energy storage device that are caused by a disaster, generating operational characteristic constraint data for devices in the power distribution system, wherein the operational characteristic constraint data for the devices in the power distribution system comprises operational characteristic constraints for the power source device, the load device and the energy storage device; and inputting the network topology constraint data for the power distribution system and the operational characteristic constraint data for the devices in the power distribution system into a pre-established coordinated source-grid-load-storage dispatch optimization model for power distribution systems in a post-disaster restoration scenario, such that a coordinated dispatch optimization result is output.

The present invention relates to a system for converting and transporting electrical energy in a turbomachine-propelled aircraft, said system including:at least a first rotary electric machine connected mechanically to the low-pressure shaft by means of a coupling device,a second rotary electric machine connected mechanically to the high-pressure shaft by means of an accessory gearbox, andsaid first electric power module and said second electric power module being connected electrically to an internal electrical network of the turbomachine,a generator coupled to the accessory gearbox and intended to supply an electrical network of the aircraft with electricity, anda control device for controlling start-up of the turbomachine by at least one rotary electric machine, for compensating for power consumed by the generator, and for implementing distribution between the power absorbed by the high-pressure shaft and the power absorbed by the low-pressure shaft.

A quantum-distributed microgrid controller employing a synchronization mechanism by leveraging the quantum properties of qubits. Since the distributed control problems of electrical networks such as microgrids can be modeled as networked differential equations, a proposed master equation is leveraged to construct the network of differential equations. By characterizing proper observables, expectation values of all the observers at all nodes will eventually get synchronized to a possibly time-varying target value and the synchronization rule follows the forced Kuramoto model. The quantum synchronization scheme is exploited to regulate AC microgrids' frequency and DC microgrids' voltage and guarantee precise power sharing. Due to the superposition feature of qubits, the QDC provides a foundation for introducing more enhanced quantum-secure distributed control for microgrids through randomizing the θ angle of qubits in the initialization step, which finally results in an unprecedented security for distributed control of AC and DC microgrids.

The invention relates to a plug connector component (7) for a multi-part plug connector (8), having - a connection interface (10) for connecting to at least one other compatible plug connector component (9) of the multi-part plug connector (8); - a primary contact region (15) for forming at least part of a primary plug interface (16) for connecting to a corresponding mating plug connector (3, 3') of the multi-part plug connector (8); - a connection region (13) for connecting at least one electrical conductor (6); and - at least one electrical contact element (11), which can be connected to the electrical conductor (6) in the connection region (13) and which extends from the connection region (13) at least into the connection interface (10), the electrical contact element (11) being connectable to a compatible electrical contact element (12) of the compatible plug connector component (9) in the connection interface (10).

The invention discloses a method and a device for automatically examining correctness of a circuit schematic diagram differential network. According to the scheme, the method comprises the following steps: inputting a circuit schematic diagram in an EDIF200 standard format, analyzing a schematic diagram file, obtaining chip pins, resistance-capacitance-inductance and related electrical network data, and storing the data to a chip device information matrix PartU and a non-chip device information matrix Partmer. Thirdly, screening differential pins according to a set standard, and storing the differential pins into a matrix Difpin; then, splitting the matrix Difpin into a matrix Difpin1 and a matrix Difpin2, traversing to obtain a differential path, and storing the differential path into a matrix DiffNet1 and a matrix DiffNet2; afterwards, based on the matrix DiffNet1 and the matrix DiffNet2, the correctness and naming normalization of the differential network are examined, incorrect paths are stored in a Diffnocor matrix, and non-standard named paths are stored in the Diffnocor matrix. Finally, the paths in the two matrixes are converted into character strings, text description is added, and an inspection result is output.

A electrical power system comprises: an electrical machine operable to output AC; a DC electrical network; a power electronics converter connected between the AC output of the electrical machine and the DC electrical network and including a plurality of transistors and associated diodes connected in parallel with the transistors; and a controller configured to control switching of the transistors of the converter so that, during normal operation of the electrical power system, the converter rectifies the AC output of the electrical machine to supply the DC electrical network with DC electrical power. The controller is further configured, responsive to a determination to the effect there is a fault in the DC electrical network, to control a voltage source, to inject a voltage to bias the diodes of the converter, and to control the switching of the transistors to control a level of current supplied to the faulted DC electrical network.

The invention discloses a high-efficiency converter for adjusting the voltage of a power grid, and belongs to the technical field of power electronics. The converter comprises a first voltage regulation circuit, a second voltage regulation circuit, a filter circuit, a detection circuit and a control circuit. By detecting the amplitude difference between the power grid voltage and the load voltage, the control circuit automatically switches the Buck working mode or the Boost working mode, and stable alternating current output in a wide input voltage range is achieved. The invention has the advantages of compact structure, high efficiency, fast response, small harmonic wave and the like, and is suitable for industrial and civil occasions with large-range fluctuation and frequent power grid voltage.

The invention discloses a dual-optical-path keyboard with a silica gel elastic piece capable of shielding light. The dual-optical-path keyboard comprises the silica gel elastic piece and an FPC, and a plurality of chips are arranged on the FPC. And the chip is one of a full color control chip, a full load color control chip, a confluence color control chip, a load color control chip and a fantasy color control chip. The light-sensitive element is located under the silica gel elastic piece, the silica gel elastic piece is made of a light-transmitting color material and a light-shading color material, the GRB in the chip is an emission light source, one path of the GRB directly provides illumination for a key cap character, the other path of the GRB directly penetrates through the silica gel elastic piece to provide the emission light source for the light-sensitive element under the silica gel elastic piece, and one light source has two purposes. The invention provides the optical switch keyboard with serial-parallel hot standby, the communication circuit is simple, the reliability is high, a single single-sided FPC (Flexible Printed Circuit) can realize full-key no-impact and GRB indication, a keyboard MCU (Microprogrammed Control Unit) can communicate with the keyboard through a maximum 5PIN electrical network, and the optical switch keyboard can be widely applied to notebook computer production.

The invention provides a measurement completion method, device and equipment serving panoramic transparency of a power distribution network, and the method comprises the steps: constructing a power distribution network graph model integrating a power grid topological structure, electrical parameters and measurement configuration information, carrying out bad data identification and cleaning on the original measurement data uploaded by the acquisition terminal to obtain a real-time measurement data set; for lines, buses, distribution transformers and circuit breakers in a power distribution network, missing electrical measurement values are obtained through classification certainty deduction calculation by using electrical network topology constraints, conservation laws and forward-back substitution load flow calculation so as to realize measurement completion; and performing quality evaluation on the complemented measurement data, and performing closed-loop feedback optimization based on an evaluation result. According to the scheme, high-precision complementation of the missing electrical quantity can be realized by depending on the measurement data acquired in real time, and the data storage and computing resource overhead is reduced.

The invention discloses a power distribution network line loss intelligent sensing and tracing decision-making method and system, and belongs to the technical field of power distribution network operation and management.The power distribution network line loss intelligent sensing and tracing decision-making method comprises the steps that multi-source heterogeneous data are connected, timestamp interpolation is carried out, and data are obtained; associating the position and GIS coordinates of the electrical equipment in the electrical network through the unique identifier of the electrical equipment, and outputting a standardized data mart; a dynamic line loss separation engine calculates total loss according to the standardized data mart and a photovoltaic back-feeding compensation item, dynamically corrects technical line loss through a photovoltaic output coefficient, subdivides a line loss component by using a K-means algorithm, and outputs a line loss component matrix; and calculating a feature vector and inputting the feature vector into the traceability decision tree to trace the line loss abnormal root cause. Time sequence and space dislocation of multi-source heterogeneous data is eliminated through timestamp intelligent interpolation and equipment ID two-dimensional mapping fusion data, accurate decoupling of management line loss and technical line loss is achieved through a corrected dynamic line loss separation engine, and the misjudgment rate of a new energy scene is reduced through a traceability decision tree.

An electrical power system 10 and a method 300 of controlling an electrical power system 10 are provided. The electrical power system 10 comprises a DC:DC power converter 100 connected between a DC power source 11 and a DC electrical network 12. The DC electrical network 12 comprises at least a first zone Z1 for powering a first group of one or more electrical loads 12La-b, a second zone Z2 for powering a second group of one or more electrical loads 12Lc-d, a first controllable circuit breaker X1, and a second controllable circuit breaker X2. The electrical power system 10 further comprises a control system 150 configured to: in response to determining there is a fault in the DC electrical network 12: control a switching operation of a plurality of transistors of the DC:DC power converter 100 to supply a controlled and gradually increasing amount of current from the DC power source 11 to the DC electrical network 12; open the first controllable circuit breaker X1 if the gradually increasing amount of current supplied to the DC electrical network 12 reaches a level defined by a first trip profile 201, the first trip profile 201 defining a gradually decreasing current level; and open the second controllable circuit X2 breaker if the gradually increasing amount of current supplied to the DC electrical network 12 reaches a level defined by a second trip profile 202, the second trip profile 202 defining a gradually decreasing current level, the gradually decreasing current level defined by the first trip profile 201 being higher than the gradually decreasing current level defined by the second trip profile 202.

The invention relates to a method for optimizing the positioning of sensors in an electrical network comprising a set of nodes, the sensors being configured to provide measurements of electrical variables of the network. According to the invention, such a method comprises: a. an initialization (E1) of the positioning of the sensors, by random selection of an initial solution corresponding to a set of positions of the sensors within the nodes of the network, and an initial temperature parameter T0, b. an evaluation (E2) of a performance of the initial solution, and c. at least one iteration of evolution of the positioning of said sensors, producing from a positioning solution of rank i ≥ 0 a positioning solution of rank i+1, by simulated annealing algorithm. Such a method also comprises a placement (E8) of the sensors within the network at the positions determined by the positioning solution of rank i+1 obtained at the end of the evolution iterations.

It is an object of the present invention to provide an electricity distribution network comprising an automation system which, following the occurrence of a fault on the electrical network, allows the electrical network to be re-powered net of the portion of the electrical network affected by the fault, without the need for intervention by the operator and without the need to be integrated into a central system. This excellent result is achieved by virtue of a network automation unit, connected to the high voltage to medium voltage electrical transformation station and to the medium voltage to low voltage electrical transformation substations, configured to transmit automation logic instructions and / or automation parameters to the high voltage to medium voltage electrical transformation station and to the medium voltage to low voltage electrical transformation substations. A method is further disclosed of controlling such electricity distribution network, implementable by through a related software.

According to an embodiment, a method includes receiving sensor data measured by a plurality of SCADA-enabled sensors associated with an electrical grid and identifying a plurality of momentary outages associated with the electrical grid based on the sensor data. The method further includes predicting (1) a plurality of possible sustained outages associated with the electrical grid based on the plurality of momentary outages and (2) a sustained outage likelihood from a plurality of sustained outage likelihoods for each possible sustained outage from the plurality of possible sustained outages based on the plurality of momentary outages.

An all-terrain outdoor elevating nacelle comprising a mechanism for lifting a working platform, this mechanism being mounted on a chassis provided with a front bridge and a rear bridge that are provided with wheels. The motive power for moving the elevating nacelle on the ground is provided by a first electric motor and that for actuating the lifting mechanism is provided by a second electric motor via a hydraulic pump which it drives. The motors are supplied by a battery that can be recharged by one or more single-phase chargers on board the elevating nacelle from a single-phase or three-phase electrical network, a slot being further provided for mounting a power supply unit intended to be connected to the charger(s) to recharge the battery. The elevating nacelle is more environmentally friendly and quieter.

The invention discloses a glasses leg, intelligent glasses and an intelligent glasses assembly. The glasses leg comprises a glasses leg main body, the glasses leg main body comprises a plurality of stacked circuit boards, and at least one functional module is arranged on one side of the circuit board corresponding to the outer side of the glasses leg main body; at least one device circuit board group exists in the plurality of circuit boards, the device circuit board group comprises a plurality of circuit boards which are adjacently arranged, at least one device accommodating cavity is arranged among the plurality of circuit boards which are adjacently arranged in the device circuit board group, and at least one functional module is arranged in the device accommodating cavity; any one functional module is electrically connected with at least one other functional module through the electrical network on the glasses leg main body; the function module comprises any one of a battery, an electrical function module or an electrical connecting piece. According to the invention, the glasses legs are formed based on the circuit board, so that the convenience and efficiency of assembling production of the glasses legs and the intelligent glasses are improved.

The invention relates to the technical field of power systems, in particular to a power grid power failure consequence analysis method considering supply chain-gas-electricity fault conduction, which comprises the following steps: S1, modeling an electrical network coupling relationship: identifying a key coupling point; s2, supply chain fragile link analysis: evaluating potential high-risk links in the system; s3, gas pipeline network fault modeling: establishing a pressure and flow calculation model of a natural gas pipeline network; s4, pneumoelectric coupling assembly modeling: establishing mathematical models of a gas turbine and a compressor; s5, urban power grid fault modeling: evaluating the operation state of the power grid under the fault; s6, power failure consequence evaluation index construction: quantifying social influence and recovery priorities in different fault scenes; according to the method, the chain propagation path of the electrical coupling network under the fault condition can be systematically revealed, high-risk coupling components and fragile links are effectively identified, and the understanding depth and the fault evaluation accuracy of a complex coupling energy system are improved.

The invention relates to a sensor(S), in particular for an electrical network of an electrically driven vehicle, in particular in an electric car. The sensor according to the invention comprises first of all a measuring device (ME) for current measurement and / or for voltage measurement in the electrical network, in particular with a low-resistance current sense resistor for current measurement according to the four-wire technique. Furthermore, the sensor(S) according to the invention comprises an integrated insulation monitoring device (ME, IQ, Rk, S3) for monitoring an electrical insulation of high-side and / or low-side of the electrical network. The sensor(S) according to the invention is characterized by the fact that the insulation monitoring device (ME, IQ, Rk, S3) operates actively and impresses measurement pulses into the electrical network for insulation monitoring.

Voltage samples are collected for a source and loads connected thereto by an electrical network. Respective negative sequence voltage difference values are generated for respective source / load pairs from the voltage sample. A connection (e.g., a loose connection) in the electrical network is identified based on the generated negative sequence voltage difference values. The identified connection is reported to a user. Identifying a connection in the electrical network may include identifying at least one source / load pair having an associated negative sequence voltage difference value that meets a predetermined criterion and identifying the connection based on the identified at least one source / load pair. Identifying the connection may include identifying at least one source / load pair having an associated negative sequence voltage difference value with a magnitude falling outside of at least one range associated with the at least one source / load pair.

An automated warehouse has a plurality of loading units designed to carry respective articles accommodated in respective storage stations and transferred by a movement device to at least one picking / depositing station, which can be accessed, at least under given operating conditions, in order to retrieve / deposit the articles. At least two loading units are provided with respective refrigerators which communicate with a remote control device to send operating data and / or receive command signals. The loading units transporting the refrigerators are distinct from the latter, are powered to be supplied by an electrical network of the warehouse when they are arranged in corresponding storage stations, and are electrically connected to the respective refrigerators.

Within conventional asset management systems, it is difficult to identify and manage physical assets that require special attention (e.g., transformers in an electrical network) from potentially thousands of physical assets within a target system. Accordingly, the disclosed embodiments provide a recommendation engine that automatically recommends physical assets for special attention based on one or more criteria. In addition, physical assets that are approved for special attention are added to a virtual special attention space that enables a particular subset of physical assets that require special attention to be retrieved in a computationally inexpensive manner and managed within a specialized graphical user interface.

Housings for tracking devices comprise a body and an electrical network. The body defines a device-receiving volume that is configured to selectively receive and retain the tracking device in the body, and a housing battery compartment that is configured to selectively receive and retain one or more housing batteries. The electrical network is operatively positioned within the body and is configured to electrically couple the one or more housing batteries with the tracking device.

The application discloses a novel vehicle-mounted high-low voltage fusion power supply network, comprising: a modular 48V high-voltage energy storage unit, which is composed of N lithium ion battery packs with a nominal voltage of 48V in series, forms a high-voltage DC bus, and each battery pack is integrated with an independent battery management subsystem; a full-isolation three-port DC / DC converter, whose high-voltage input end is connected to the high-voltage DC bus, has two low-voltage output ends that are electrically isolated from each other and completely isolated from the high-voltage side, wherein the first low-voltage output end is a 12V output end, directly connected to a vehicle 12V electrical network, and the second low-voltage output end is a 48V output end, serving as a medium-voltage distribution bus; through modular high-voltage energy storage, full-isolation multi-port power conversion, intelligent power distribution control and hardware-level redundancy design, the architecture completely cancels the 12V lead-acid storage battery, and realizes efficient, safe and bidirectional flow of energy among multiple voltage domains.

The present invention relates to an automotive electronic fluid pump (10) having an electric pump motor (14). The electric pump motor (14) includes an electromagnetic motor stator (50) having a plurality of stator coils (52), a motor rotor (54) electromagnetically driven by the motor stator (50), a pump rotor (34), and a rotor shaft (30), a motor electronic circuit (42) disposed in an electronic circuit chamber (40) and including a rectifying electronic circuit and a power semiconductor (44) for energizing the stator coil (52), and a separation tube (70) fluidly separating a wet motor rotor chamber (62) and a dry motor stator chamber (61). A pot-shaped motor housing frame (80) having a frame bottom wall (82) and a substantially cylindrical frame side wall (84) is provided. The frame bottom wall (82) defines a substantially transverse separation wall (64) that fluidly separates the wet motor rotor chamber (62) and the dry electronic circuit chamber (40). The frame side wall (84) supports the radially outer side of the motor stator (50). The motor housing frame (80) is made from a deep-drawn metal sheet body (80'). The motor housing frame (80) also defines a cylindrical axial support collar (66) made by reverse drawing of the metal sheet body (80'). The support collar (66) directly supports the support section (702) of the separation tube (70).

The present disclosure relates to a computer-implemented method for determining a network layout of an electrical network with two or more network ports, wherein a network layout indicates a spatial distribution of conductive material electrically connecting network ports of the electrical network, the method comprising: (a) generating a plurality of candidate network layouts, wherein each candidate network layout is divided into a plurality of modules; (b) computing, for each candidate network layout, a performance metric based on module-specific scattering information of each module of the candidate network layout; and (c) determining the network layout based on the performance metric of each candidate network.

Electrical architecture for a vehicle, comprising a propulsion electrical network (10L, 10R) and a non-propulsion electrical network (20), the propulsion electrical network comprising at least a first fuel cell assembly (30L, 30R) and a propulsion electric motor (1L, 1R) connected to the first fuel cell assembly comprising at least a first fuel cell (31L, 31R) and first auxiliary electrical equipment (32L, 33L, 34L, 32R, 33R, 34R), the non-propulsion electrical network comprising a second fuel cell assembly (40L, 40R) comprising at least a second fuel cell (41L, 41R) and second auxiliary electrical equipment (42L, 42R). The architecture comprises at least one electronic control unit connected to the fuel cell stacks (30L, 30R, 40L, 40R) to control them selectively in two start-up phases and one nominal operating phase. Aircraft comprising such an architecture.SUMMARY FIGURE : Fig. 1.

The invention discloses a high-density large-current LED (light-emitting diode) module based on an improved copper substrate circuit, which is characterized in that a traditional single'lane 'is widened into a plurality of'lanes' by additionally arranging a third bonding pad which is not electrically connected with an anode and a cathode at the bottom of a lamp bead and an auxiliary current path which is arranged on a copper substrate and corresponds to the third bonding pad; a low-resistance path is provided for current, and the current capacity, the packaging density, the heat dissipation performance and the welding yield are remarkably improved. Meanwhile, the adjacent welding bosses belonging to the same electrical network are connected through one or more solder paste flowing channels. The solder paste flowing channel is an exposed copper foil channel formed after etching. In the reflow soldering process, molten soldering tin can flow in the boss and the channel system which are communicated with each other to automatically compensate the tin quantity difference on each bonding pad, so that the uniformity of the welding height is realized, and the defects of tombstone standing, deviation, pseudo soldering and the like are effectively prevented.

An electrical heating device (100) having a CPC constant power heating cable (10) inserted into an open structure (200) having a core profile (201) and / or a cover element (202), the electrical heating device (100) being quickly assemblable, the CPC (10) being directly connected to an electrical network and / or a control unit (110) without the use of power cables. The electric heating device (100) can be mounted in any direction, the CPC (10) having connections at both the head and the base of the structure (200). The electric heating device (100) has a power regulator (111) with software (112) in the control unit (110), which power regulator performs control of the electric power in order to keep the energy flow towards the CPC (10) constant depending on the desired temperature, prevent the closing and opening of the cycle at maximum power, and allow the simultaneous use of a plurality of electrical appliances.

An electrical power system and an aircraft including an electrical power system are provided. The electrical power system includes: an electrical power source; a DC electrical network; a power converter including at least one input terminal and first and second DC output terminals, the at least one input terminal connected to the electrical power source, the first and second DC output terminals connected to the DC electrical network; a DC link capacitor connected between the first and second DC output terminals; a power semiconductor switch connected in series with the DC link capacitor between the first and second DC output terminals; and a control unit configured to respond to a fault in the DC electrical network by opening the power semiconductor switch, whereby discharge of the DC link capacitor is prevented.

The present invention relates to a battery system (1) for a motor vehicle (2), the battery system having a battery (3) for supplying electrical energy to the motor vehicle (2), the battery having a first inverter (4) for converting the direct current of the battery (3) into alternating current and a first coil (5) for generating an alternating magnetic field for transferring energy to the motor vehicle (2), the battery system further having a second coil (7) that can be arranged on the motor vehicle (2) and can be electrically coupled to the on-board electrical network (6) of the motor vehicle (2), the second coil being for receiving energy from the first coil (5). The first coil (5) is wound around a first coil core (8) and the second coil (7) is wound around a second coil core (9), wherein the first coil core (8) has a first contact region (10) for mechanically coupling to a second contact region (11) of the second coil core (9) to form a common coil core. The present invention also relates to a motor vehicle (2).