88 results about "Critical power" patented technology

An interruptible power supply module, located at a customer's premise, functions to reduce the demand on a power utility company. As a power utility senses a critical power supply demand situation, it sends an “interrupt power” control signal through an alternative communications network (a telecommunications network, for example), to each subscribing customer. Upon receipt of the “interrupt” control signal, a switch is activated in the customer's interruptible power supply module to remove a pre-defined “interruptible” load for a predetermined period of time (perhaps not to exceed 15 minutes in any hour). The module may also be used to “gracefully” add interruptible loads back onto the system after a complete power outage.

An information handling system includes modular processing resources, each having a main processor, system memory, and preferably a service processor resource. A management resource coupled to a service processor resource evaluates a system power budget and allocates power to a processing resource by indicating a critical power level. The processing resource determines a warning power level based on the critical power level and monitor its actual power consumption. If actual power consumption exceeds the critical power level, the processing resource is powered down. If actual power consumption exceeds the warning power level, the processing resource throttles its performance to conserve power and requests a power allocation increase. If actual power consumption is below the warning power level, the processing resource may request a reduction in allocated power.

An electric power load management system and method that uses a multiplicity of remote power supplies in a controlled manner such that the aggregate system has the capacity to offset critical power company peak electric demand periods thereby preventing severe and detrimental power shortages and interruptions.

A redundant power distribution system and a method of providing redundant isolation are described. The system includes a normal operation circuit branch and an external bypass circuit branch, enhanced with a generator bypass connection, both connected to a critical load, the generator bypass circuit branch including a diverse, redundant power source. The normal operation circuit branch delivers power to the critical load during normal operations and the external bypass circuit branch delivers power to the critical load from the redundant power source via the enhanced generator bypass connection during bypass operations. The system also allows the critical load to be electrically isolated from all of or a portion of the normal operation circuit branch.

The present invention relates generally to electrical power distribution, for example, in aircraft. More particularly, according to a first aspect, the present invention relates to a power supply system for power distribution to one or more loads in a safety-critical power supply network. The power supply system comprises at least one power source, a power bus and a distributed control system. The distributed control system comprises a central controller operably coupled to at least one bus module through a data bus. Bus modules include bus controllers that are operable to connect respective power sources to the power bus.

An integrated platform assembled with different electrical cabinets and components mounted on a framework in order to provide a complete datacenter critical power distribution package. The integrated platform supports the weight of cabinet enclosures and UPSs mounted onto a skeletal framework, which acts as an equipment support structure and a cable routing support system. Main and redundant power supply wiring is routed along the skeletal framework to and between the cabinet enclosures and the UPSs mounted thereon. Electrical connections between the cabinets are internally connected via bus bars as switchgear cabinets. The skeletal framework has top and bottom rails run substantially parallel to each other with cross bars connecting the top and bottom rails and a top horizontal surface to which one or more of the cabinet enclosures are mounted. The skeletal framework and cabinet enclosures are fabricated prior to installation and installed as a monolithic pre-wired pre-assembled integrated platform.

The invention discloses an EEAC (extended equal area criterion)-based transient stability critical power transmission section identification method and belongs to the power system and power system automation technical field. According to the method, fault screening is performed on a predicted fault set based on EEAC quantitative evaluation results; candidate section composition branches are screened through using the power fluctuation amplitude of each line in the dynamic process of transient stability simulation; the breaking of the candidate section composition branches is simulated, a node where a dominant complementation group set is located is adopted as a root node, all nodes connected with the root node are traversed, and the subordinate groups of the nodes are marked; nodes in the head nodes and tail nodes of candidate branches, which belong to an S group and an A group respectively, are adopted as starting points and terminal points, all communicated paths connected with the starting points and terminal points are obtained through topological searching; and branches with large power fluctuation amplitude are preferentially selected from candidate branches belonging to the communicated paths so as to form a cut set section. With the method of the invention adopted, requirements for online safety monitoring on a transient stability critical power transmission section under a predicted fault situation are satisfied with the current operating condition of a power grid satisfied.

An integrated platform assembled with different electrical cabinets and components mounted on a framework in order to provide a complete datacenter critical power distribution package. The integrated platform supports the weight of cabinet enclosures and UPSs mounted onto a skeletal framework, which acts as an equipment support structure and a cable routing support system. Main and redundant power supply wiring is routed along the skeletal framework to and between the cabinet enclosures and the UPSs mounted thereon. Electrical connections between the cabinets are internally connected via bus bars as switchgear cabinets. The skeletal framework has top and bottom rails run substantially parallel to each other with cross bars connecting the top and bottom rails and a top horizontal surface to which one or more of the cabinet enclosures are mounted. The skeletal framework and cabinet enclosures are fabricated prior to installation and installed as a monolithic pre-wired pre-assembled integrated platform.

A hybrid power generation system and method based on classification of solid fuel pyrolysis and semi-coke combustion are provided. The system comprises a pyrolysis device (1) for pyrolysing solid fuel to produce gas, liquid and solid semi-coke fuels, the gas and liquid fuels are separated through a condensing device (2), then separately passed into purification devices (3) and (4) for dedusting and desulfurizing the gas and liquid fuels, and the solid semi-coke fuel is passed into a boiler (5) for combustion to generate steam; a gas turbine (7) for power generation by burning gas and/or liquid fuel, and a steam turbine (8) for steam power generation. The method is carried out by pyrolysing solid fuel to classify solid fuel and produce gas, liquid and solid semi-coke fuels separately entering into gas and steam turbines for power generation, so as to effectively simplify the process, reduce cost, integrate the advantages of the integrated gasification combined cycle (IGCC) and the super-critical power generation technology, and significantly improve the power generation efficiency, it not only can be used in large power plants, but also can be used in small generator sets employing middle or high pressure parameters.

Various embodiments of a transportable nuclear power generator having a plurality of subcritical power modules are disclosed. Each of the plurality of subcritical power modules includes a fuel cartridge, a power conversion unit, and a housing substantially enclosing the fuel cartridge and the power conversion unit. The fuel cartridge contains a nuclear fuel and has a proximal end and a distal end. The power conversion unit includes a compressor turbine disposed at the proximal end of the fuel cartridge and a power turbine disposed at the distal end of the fuel cartridge. At least one of the plurality of subcritical power modules is movable with respect to the other of the plurality of subcritical power modules between a first position and a second position to control criticality of the nuclear fuel contained in the fuel cartridges of the plurality of subcritical power modules.

A standby domestic power storage and supply for a domestic or residential premises, and establishments comprising: a battery or equivalent power storage device; (with or without a backup) and optionally single or three phase supply to suit the available space and specific standby demands an AC/DC converter for converting between a direct current and alternating mains current; and a system of renewable power systems integrated with the mains supply and the standby storage supply to afford mains feed in or alternatively top up of the electrical power storage device. An integrated wiring system suited for installing in new premises or retrofitting to accommodate power existing or new distribution boards. Especially the addition of a new essential power distribution board being fed from the mains or from the standby power storage unit when mains power fails. A new essential distribution board to provide essential power to dedicated and or critical power points. This is achieved using typically a 3 way switch either manually or remotely controlled to serve such critical items as a dialysis machine a medical fridge of an electric vehicle etc. This electric vehicle can also be used to top up the standby power storage device. A control system for controlling interaction of the battery or equivalent storage device with one or a plurality of domestic electrical circuits and/or electrical devices. The circuit includes integrated relays that change the flow of electricity to and from the mains supply or the standby power supply as and when a power failure occurs It also enables the renewable supplies to serve and top up the standby power device (UPS) when there is an outage or when the UPS needs topping up. In addition there are back feed preventers type G59 or equal that ensure power does not return up the incoming supply wiring as and when an outage occurs. There are isolators located such that items of equipment can be isolated during periods of maintenance and repair. There is the option of a wired control loop for the purpose of monitoring and controlling the system in an integrated manner.

In apparatus and methods of Raman spectroscopy in air, a target region is excited by a laser pump pulse exceeding the critical power for self-focusing in air and having a duration after self-focusing of 15 fs or less. A laser probe pulse having a duration in the range of 200 fs to 100 ps and an energy of at least 20 μJ is directed at the excited target region. Stimulated Raman scattering from the interaction between the excited target region and the laser probe pulse is detected. The target region can be outside the spectrometer, with ambient air in between used for the self-focusing.

The invention discloses a system for intelligently monitoring grinding power and energy consumption and a strategy deciding method and belongs to the technical field of monitoring of machine tools. Aiming at the current situation that the grinding state is commonly judged and the grinding parameters are set and adjusted through experience manners of seeing the grinding spark and listening to the grinding sound in the current practical grinding practice, the invention discloses a software and hardware system for intelligently monitoring grinding power and energy consumption, a big data analyzing and strategy deciding system and a method thereof which are capable of monitoring and analyzing power and energy consumption in the grinding process in real time and have functions of comparing andanalyzing performance of grinding machines, grinding tools and working fluid and optimizing grinding strategies and process parameters. The system and the strategy decision method are capable of comparing the real-time grinding power and judging the relationship of size of lower limit P1 and upper limit P2 of critical power threshold, judging the grinding state and effectively analyzing and prejudging the grinding overload, passivation of the grinding tools and grinding burn. The system and the strategy decision method can be applied to grinding materials, grinding tools and grinding-related manufacturing industry; the intelligent production with high efficiency and lower energy consumption can be facilitated.

Embodiments are directed to providing a user interface (UI) that streamlines and simplifies the process of monitoring critical power-generation module (PGM) parameters after a PGM assembly is shutdown. The UI displays, in real-time, indicators corresponding to one or more post-shutdown PGM parameters. The UI provides indications of whether the post-shutdown PGM parameters meet post-shutdown criteria of the PGM assembly. When a post-shutdown PGM parameter does not meet the post-shutdown criteria, a user alert is provided to the user. A protocol may additionally be provided to the user. In some embodiments, the protocol may enable the user to return the PGM assembly to a condition that satisfies the post-shutdown criteria. The protocol may be a safety protocol and/or an asset protection protocol.

The invention provides a T-BOX standby battery control device and method. By setting over-discharge critical power value of a standby battery, health index, current power value and current working current of the standby battery are obtained, the battery life of the standby battery is calculated, and task executing time needed by processing a preset task is obtained; and a battery control strategyis selected according to a relation between the task executing time and the battery life; and therefore, the over discharge of the standby battery is avoided, and the service life of the standby battery is prolonged.

An electrical power supply system is provided with capacitor-based hold-up protection. Inrush current to the capacitor is passively limited with a combination of a resistor and a rectifying device connected to a hold-up capacitor. During start-up, the rectifying device may be reverse-biased and a portion of input current is shunted to charge the hold-up capacitor. In the event of input power failure, the rectifying device is forward biased and the capacitor may be discharged to a load of the power supply thereby providing hold-up protection for the load.

A system and method for launching and characterizing filaments are provided using an aerodynamic window. A filament, a self-induced waveguide in air, is produced by high power laser pulses traversing the atmosphere that can self-focus due to the nonlinear index of refraction of air. At some critical power, self-focusing overcomes diffraction in the atmosphere and the beam collapses until it is balanced by some higher order effect, usually plasma de-focusing. The use of an aerodynamic window provides an opening for a laser beam to propagate between two different atmospheric regions without the use of a solid window, such as between the atmosphere and a vacuum. An aerodynamic window provides a means for controllably launching a filament into the atmosphere. Additionally, an aerodynamic window allows for the characterizing evaluation of a filament without damage to the optical diagnostic tools.

The invention belongs to the power system field, and in particular relates to a method for rapidly analyzing reactive power balance and a critical power flow of a power system. The method comprises the following steps: first, according to a principle of hierarchical and regional balance of reactive power, rapidly analyzing the reactive power balance by fully using a quantitative relation between reactive power requirements and active power transmissions; then starting solving the critical power flow of the reactive power balance, wherein a m-in-and-n-out transformer substation is equalized to a one-in-and-one-out transformer substation, and then an equation of active power balance and an equation of the reactive power balance are written according to the one-in-and-one-out transformer substation, so as to calculate critical power flows of a incoming line and an outgoing line; and changing main-transformer load or a high-pressure-level injected power flow and solving the series critical power flow, so as to get a curve in which the critical power flow varies according to the main-transformer load (or the high-pressure-level injected power flow), thereby improving applicability of research conclusions.

A phase-change material and a memory unit using the phase-change material are provided. The phase-change material is in a single crystalline state and includes a compound of a metal oxide or nitroxide, wherein the metal is at least one selected from a group consisting of indium, gallium and germanium. The memory unit includes a substrate; at least a first contact electrode formed on the substrate; a dielectric layer disposed on the substrate and formed with an opening for a layer of the phase-change material to be formed therein; and at least a second contact electrode disposed on the dielectric layer. As the phase-change material is in a single crystalline state and of a great discrepancy between high and low resistance states, the memory unit using the phase-changed material can achieve a phase-change characteristic rapidly by pulse voltage and avert any incomplete reset while with a low critical power.

The invention belongs to the technical field of voltage stability of power systems, and specifically relates to an unscented transformation method for analyzing the voltage stability probability of asystem containing wind power. First, a static voltage stability probability evaluation model is established by considering the randomness of wind farm output and the uncertainty of load increasing direction; then, the voltage stability probability evaluation problem is converted into deterministic static voltage stability analysis of a small number of sample points by using a UT method; and finally, the deterministic problem is solved by the modern interior point method to obtain the mean value and covariance matrix of an output random variable. The original probability analysis problem is converted into a deterministic optimization problem, and the influence of the wind speed correlation between wind farms close to each other on the probability distribution of critical power is analyzed.The method is easy to implement and efficient in calculation, and can be used in online calculation of power systems. The voltage stability probability obtained is more accurate in analysis and has high calculation accuracy, and is convenient for power system dispatchers and operators to understand and use.