60 results about "Capacity design" patented technology

Improved high energy capacity designs for lithium ion batteries are described that take advantage of the properties of high specific capacity anode active compositions and high specific capacity cathode active compositions. In particular, specific electrode designs provide for achieving very high energy densities. Furthermore, the complex behavior of the active materials is used advantageously in a radical electrode balancing design that significantly reduced wasted electrode capacity in either electrode when cycling under realistic conditions of moderate to high discharge rates and / or over a reduced depth of discharge.

Improved high energy capacity designs for lithium ion batteries are described that take advantage of the properties of high specific capacity anode active compositions and high specific capacity cathode active compositions. In particular, specific electrode designs provide for achieving very high energy densities. Furthermore, the complex behavior of the active materials is used advantageously in a radical electrode balancing design that significantly reduced wasted electrode capacity in either electrode when cycling under realistic conditions of moderate to high discharge rates and / or over a reduced depth of discharge.

The invention provides a hybrid energy storage system for a subway, and the characteristics of high specific energy of a lithium battery and high specific power of a super capacitor are combined, andthe influence of factors such as a subway peak, a flat peak operation time period, a traction network voltage interval and the like are comprehensively considered. An optimal distribution strategy ofthe metro feedback electric energy between the lithium battery pack and the supercapacitor bank and the capacity design method of the hybrid energy storage system are obtained. On the premise that thevoltage of the traction network is in the safe range, the power / energy of the battery pack and the supercapacitor bank can be reasonably distributed. The recovery efficiency of the metro feedback electric energy is effectively improved. Meanwhile, the upper limit of the power required by the lithium battery pack is reduced, and the parallel capacity and the system cost of the lithium battery packcan be reduced.

Improved high energy capacity designs for lithium ion batteries are described that take advantage of the properties of high specific capacity anode active compositions and high specific capacity cathode active compositions. In particular, specific electrode designs provide for achieving very high energy densities. Furthermore, the complex behavior of the active materials is used advantageously in a radical electrode balancing design that significantly reduced wasted electrode capacity in either electrode when cycling under realistic conditions of moderate to high discharge rates and / or over a reduced depth of discharge.

The invention discloses a method for processing alternating current system failures in an alternating current and direct current electric transmission line. The method comprises the steps of obtaining actual operation data of a power grid; according to overload capacity designed for direct currents, confirming power value, capable of being instantly increased or reduced, of a direct current system, and designing the transmission function controlled by direct current emergency power; obtaining the generator tripping value needed when the direct current emergency power is adopted to control conditions under failures of an alternating current system through an offline computing mode, pushing out action effect of the direct current emergency power control on the alternating current system failures, and making an offline control strategy; when the alternating current system failures occur, judging whether to adopt the direct current emergency power control according to the strategy, and safely and stably controlling the device to adopt generator tripping or load tripping measures according to the strategy. According to the method, the direct current emergency power control and the safe and stable control strategy are combined, a direct current emergency power control method is adopted to reduce total generator tripping value after the alternating current system failures occur, and overall economic benefits of power grid operation is improved.

The invention discloses a modular design method of a large-capacity battery energy storage system which is defined into power MW level and comprises an energy storage battery, a battery management system, an energy storage converter, a monitoring system and the like. According to a modular design idea, the large-capacity battery energy storage system is reduced to an energy storage unit, an energy storage branch and an energy storage loop according to the hierarchy, wherein the energy storage unit is a basic module of an energy storage system and comprises an energy storage pile and an energy storage converter. According to the function division of the large-capacity energy storage system, the invention relates to specific applications under a peak load shaving mode, a new energy access mode and a peak-shaving frequency modulation mode, and comprises definition, composition, power / capacity design, topological structures, access modes and energy storage unit parameter design of all levels of structures in the energy storage system. The large-capacity battery energy storage system has the advantages of clear structure, well arrangement and favorability of operation and maintenance of a primary system and energy management and control of a secondary system, and the like.

The invention discloses a power capacity allocation method of a grid-connected microgrid. The method comprises the steps of (A) building a wind turbine model, a photovoltaic cell model and a storage battery model in the grid-connected microgrid; (B) building a capacity design optimization objective function model, wherein a capacity design optimization objective function comprises annual average composite cost C<ACT> and a self-equilibrium coefficient SSR; (C) solving the capacity design optimization objective function by using a stochastic simulation-based NSGA-II algorithm to obtain a pareto frontier; and (D) selecting a preferred plan meeting the design requirements from the pareto frontier by using a utility theory. According to the power capacity allocation method, the economy and the self-powered capability are taken into account while the wind and light output uncertainty is considered, and the optimum numbers of wind turbines, photovoltaic cells and storage batteries can be determined according to the design requirements.

A granulation installation for a melt produced in a metallurgical plant, especially for blast furnace slag having a water injection device for quenching and thereby granulating the melt and a granulation tank for collecting water and granulates a steam condensation tower is located above the granulation tank for collecting steam generated in the tank, where the tower has a steam condensing system with a water-spraying device and a water-collecting device below the water-spraying device, and the tower is equipped with a stack for selectively evacuating excessive steam to the atmosphere, the stack having an inlet communicating with the lower zone of the condensation tower and an outlet arranged to evacuate steam to the atmosphere above the condensation tower, the stack being equipped with an obturator device for selective evacuation of steam through the stack, where the installation according to the invention may process an increase of 60% of slag, e.g. around +5 t / min of slag in a system having a condensation capacity designed to handle a maximum slag flow rate of 8 t / min, without any risk of steam backflow in the granulation area.

The invention discloses a power supply capacity planning system and a method for an intelligent community including electric vehicle charging facilities. The power supply capacity planning system comprises a man-machine workstation, a data processing device and a capacity planning device, wherein the man-machine workstation is connected with the data processing device; and the data processing device is connected with the capacity planning service device. The system can build an intelligent community model according to the design of the intelligent community, and takes permeability of the electric vehicle at different development periods in capacity calculation; and the capacity design in different operation periods of the electric vehicle is convenient for comprehensive analysis and comparison, so that the community capacity is rationally designed. The community capacity is rationally designed, so as to avoid great investment caused by excessive capacity of the selected transformer, large no-load loss or transformer load loss increase caused by too low transformer capacity, and harm to safety and stability of a power grid. The intelligent community is used as a terminal of the intelligent power grid, and the capacity of the intelligent community is rationally designed to provide important support for the stable, safe and economic operation of the power system grid.

The invention discloses a matching structure of an electric car battery pack and a car body, which is characterized in that: the battery pack is arranged on a central position below a car body floor, the front end of the battery pack is arranged right below an instrument console, and the rear end of the battery pack is close to a trunk; a front projection on the front part of the upper surface of the battery pack corresponds to the lower surface of an middle passage on the car body floor, and a rear projection on the rear part of the upper surface of the battery pack corresponds to the lower surface of a rear seat position; and the battery pack is connected with the car body floor through bolts. The upper surface of the battery pack is provided with an air inlet pipe, and two side surface of the battery pack are respectively provided with an exhaustion pipe. Due to the adoption of the matching structure, a low-temperature heating function and a high-temperature heat radiation function of the battery pack can be realized; the battery pack effectively utilizes the space on the lower part of the floor and is completely bonded with the car body, so the load of a front axle and a rear axle of the car can be uniformly distributed; and the requirements that the capacity design of the battery pack is maximized and the car body modification is minimized can be satisfied, and the matching structure also has the advantages of convenience in installation and disassembling and the like.

The invention discloses a photovoltaic power station design system. The system comprises a view-finding unit, an input unit, a calculation unit, a query unit, a data unit, a design unit and an output unit. The photovoltaic power station design system is arranged in a mobile terminal and a remote control center in communication connection with the mobile terminal; an outdoor scene of a house is photographed through the mobile terminal; and the length, width and orientation of the house are input, so that installed capacity design, electric design, plane layout chart design, vertical view design, bracket design and grid-connected mode design of a distributed photovoltaic power station can be realized by steps. The invention furthermore provides a design method for the photovoltaic power station design system. The size and orientation of the house or land can be input through the mobile terminal; the scene can be photographed through the mobile terminal; and the input information is calculated and designed to form a design detailed list and a layout of the photovoltaic power station. Compared with conventional manual design, the system has the advantages that the design is automatically finished by an intelligent device; and the use is convenient and quick, so that the photovoltaic system design efficiency is greatly improved.

The invention relates to the field of solar energy application, in particular to an automatic horizontal silicon substrate film producing device. The device comprises a heating section, a vacuum transition section 1, a depositing section, a vacuum transition section 2 and a cooling section. An automatic gate valve is arranged between the working rooms; the heating section and the cooling section are anti-vacuum sections; the depositing section comprises a plurality of depositing modules; each depositing module comprise a depositing chamber, a vacuum transition chamber, a driving device, a position measuring device, a vacuumizing device, a distributing device and a discharging device; two depositing chambers are symmetrically or asymmetrically distributed on two sides of the vacuum transition chamber; each depositing chamber is connected with one drying pump; the depositing chamber and the vacuum transition chamber share a set of vacuumizing device; two ends of the depositing module are provided with two connecting devices which have a same size and shape or match with each other; and a continuous coating film depositing section is formed by connecting a plurality of parallel depositing modules by the connecting device. The device can change the number of the depositing modules according to the film coating technique and different demands of capacity design, and has wide application range, high producing efficiency and convenient maintenance.

The present invention relates to a design method of a grid energy storage system capacity in operation. For the problem of an energy storage system for power system secondary frequency modulation, a filter is used to distribute an AGC power command between a generator and an energy storage system, and with the minimization of the average daily cost of performing a frequency modulation task by the generator and the energy storage system as a target, the optimization model of a frequency modulation capacity is established. Through optimizing a filter parameter, the optimal frequency modulation capacity with lowest total average daily cost is obtained, and an optimal scheme is provided for energy storage system capacity configuration. The frequency modulation task is adjusted according to the respective frequency modulation ability of the generator and the energy storage system in operation. According to the strategy of adjusting the frequency modulation task of the energy storage system according to an energy storage system residual energy, the energy storage system residual energy can be maintained in a reasonable interval. The energy storage system participates in an AGC, the response ability of the whole system to an AGC power command can be greatly improved, and the climbing power of the generator is reduced.

The invention discloses a design method of a buried heat exchange system. The design method comprises the following steps of: (1) calculating a space d between buried pipe heat exchangers according to a burying region of the buried heat exchange system, and taking the space between buried pipes (1) on the outermost layer as 0.9 times of the space of the inner buried pipes during burying; (2) next calculating an equivalent heat exchange capacity design value of the buried pipe heat exchangers under the action of dynamic load according to the space d of the buried pipe heat exchangers and a rock-soil thermo-physical property parameter; and (3) calculating the depth of the buried pipes of each buried pipe heat exchanger by dividing a building load demand total value by the equivalent heat exchange capacity design value to obtain an actual depth value of the buried pipes so as to finish design of the entire buried heat exchange system. According to the design method, the heat exchange capacity design calculation of the buried pipes of a ground source heat pump system is greatly simplified, the scientificity and the rationality of the buried heat exchange system are improved, and one-time investment of the system can be reduced.

The invention discloses a method for preparing a graphene / silicon carbon composite material by taking microcrystalline graphite as a carbon source. According to the invention, microcrystalline graphite powder is taken as the carbon source, is mixed with graphene oxide dispersion liquid, primary vapour deposition is carried out on copper foil, a transition layer is formed, a stable and firm adhesion point with certain toughness is provided for silicon deposition, and electrode conductivity is increased. The nano dots and nano wires are distributed on a carbon network transition layer, which hasthe growth guiding effect during a secondary vapour deposition process, and a specific shape is generated. The graphene / silicon carbon composite material is composed of several nano particles, has good mechanical strength and toughness, and can effectively reduce the shedding of an active material due to volume expansion of silicon. The material has the characteristics of large reversible capacity, capacity design , good cycle performance and heavy current discharge capability, and high tap density.

The invention relates to a vertical shaft giant energy wind power generator group, which comprises the main structure of a vertical shaft, a rotational wind power plate, an upwind inverting plate, a yawing guide disc form, and the like, and can realize the giant output capacity design and cascade output capacity and regulation of the vertical shaft generator; a plurality of vertical shaft giant energy wind power generators are arrayed in series to realize unite power output and the unite power output is combined with a multi-generator system to form a vertical shaft giant energy and energy collecting wind power generator group; the wind power generator group brings in the operation mode of the vertical wind power turbine into the determination and regulation control structure of the wind power direction for the first time; the wind power generator group can lead a rotational wind power plate to realize fully-closed wind collection and super low resistance rotary operation, thus forming an unprecedented giant output capacity design; the wind power generator group as well can use remote control to realize the full opening operation of the upwind inverting plate on the rotational wind power plate, thus realizing the advantageous effects of resistance to impact of typhoon; the equipment structure of the wind power generator group is simple and convenient for decentralized transport at top of hills; the wind power generator group has giant wind collecting surface, particularly being suitable for the construction at top of hills, meanwhile being suitable for the construction of wind turbines on sea islands and on sea.

The invention discloses a DC transformer topology for unipolar-to-true bipolar transformation, which is a DC transformer topology suitable for an application scenario in which the input side is unipolar and the output side is truly bipolar. In the process of unipolar-to-true bipolar transformation, the main problem is that load imbalance often occurs on the true bipolar side. Under such condition,imbalance of the output voltage can be easily caused, and the stable operation of the system will be affected. A DC transformer and power balance topology for unipolar-to-true bipolar transformationpresented by the invention is used to solve the problem of DC / DC voltage transformation under load imbalance. The design scheme is as follows: a power balance system is designed between the positive and negative poles of output, so that the unbalanced power is transmitted through the system and the voltage between the two poles can be balanced. The scheme can reduce the capacity design demand of the system and the construction cost of the system under the above scenario.

The invention relates to a vertical shaft giant energy and energy collecting wind power water elevator group, of which a giant energy unit is composed of a vertical shaft, a rotational wind power plate, an upwind inverting plate, a yawing guide disc, a water elevator tool, and the like, and which can realize giant output capacity and cascade output capacity and regulation thereof. The water elevator group brings in the operation mode of a vertical wind power turbine into the determination and regulation of the wind power direction for the first time; the water elevator group can lead the rotational wind power plate to realize fully-closed wind collection and super low resistance rotary operation, thus forming an unprecedented giant output capacity design; the water elevator group as well can control the operation of partial or full opening of the upwind inverting plate on the rotational wind power plate, thus realizing the advantageous effects of the regulation brake of upwind change and resistance to impact of typhoon; the water elevator group has simple structure and convenient disperse transportation as well as a giant wind collecting area; a unite concentration output power formed by a plurality of vertical shaft giant energy wind turbines connected in series is combined with the water elevator tool to form an energy collecting unit, thus realizing the combination in series of the vertical shaft wind power unit; the co-occurrence becomes a watershed for wind power water elevation to realize extensive, efficient, scaled development.

The invention provides a method for estimating the capacity of a flexible HVDC transmission system in an urban power grid, which comprises the following steps: step 1, acquiring the active power demand of the power grid according to a target grid frame and a target load; step 2, obtaining reactive power demand accord to that reactive power planning of an AC power grid; 3, designing the capacity tomeet the demand; 4, determining the upper limit of the capacity of a flexible direct converter station according to the throughflow capacity of the connected alternating current line of the flexibledirect converter station; step 5, further refining the capacity according to the selected device requirements. The invention can reasonably determine the capacity of the converter station of the flexible direct current transmission system in the urban power grid.

The invention provides an energy management method for a distributed system with a heat storage device. The method comprises the steps of electric energy distribution, heat energy distribution, heat storage device control, heat storage device capacity design and the like. Characteristics of user electric cooling and heating loads are combined; the heat energy of the distributed system is stored and released through the heat storage device; optimal scheduling of system energy is achieved, a distributed system control method and a heat storage device design method are improved, system heat energy loss is reduced, the comprehensive energy utilization efficiency is effectively improved, the system investment cost is reduced, the recovery period is shortened, great economic advantages are achieved, and the heat storage technology can be effectively promoted to be applied to an actual distributed system.

The present invention relates to an offshore flexible DC power transmission system voltage level and transmission capacity calculation method which comprises the following steps: (1) collecting original data comprising the economic level, geographical environment, electricity load characteristic and load forecasting data of a load area (2) determining flexible DC power transmission system voltage level and transmission capacity design scheme alternatives, (3) calculating the flexible DC power transmission system investment cost of each alternative, (4) calculating the flexible DC power transmission system operation cost of each alternative and converting the operation cost into the equivalent amount of investment and construction time, (5) calculating the flexible DC power transmission system reliability cost of each alternative and converting the cost into the equivalent amount of investment and construction time, (6) calculating the flexible DC power transmission system comprehensive cost of each alternative, and (7) selecting the alternative with the lowest comprehensive cost. According to the method, the construction cost, the operation cost and the reliability cost are fully considered, and the method can be widely applied to the offshore flexible DC power transmission system design.

The invention provides a liquid cargo tank modeling method and system, a storage medium and an electronic device which are applied to design of a liquid cargo tank of a liquefied gas carrier. The method includes the steps: acquiring hull form limit of the liquefied gas carrier, overall length limit required values of a liquid cargo tank model to be built, overall width limit required values and hold capacity design target values; screening matched liquid container types and seal head types from a preset database according to the overall length limit required values of the liquid cargo tank model to be built, the overall width limit required values and the hold capacity design target values; calculating various data results of the liquid cargo tank model according to a built liquid container model; judging whether hold capacity data of the liquid cargo tank model meet the hold capacity design target values or not whether the distance between the liquid cargo tank model and a hull form meets standard requirements or not, and outputting the various data results and the liquid cargo tank model built according to the data results if the hold capacity data of the liquid cargo tank modelmeet the hold capacity design target values and the distance between the liquid cargo tank model and the hull form meets the standard requirements. Technical staff can rapidly and efficiently design the independent liquid cargo tank to shorten time consumed by an existing design method, research and development of the independent liquid cargo tank are accelerated, and the design cycle of the liquefied gas carrier is shortened.

The invention discloses a grinding capacity design method based on grit chip thickness distribution constraint, comprising the steps of (1) setting target grit chip thickness distribution according toprocessing results, giving set grinder surface grit parameter and grinding capacity, and initializing the grinding capacity; (2) subjecting grinder surface grit parameters and grinding capacity to grit chip thickness distribution calculation so as to obtain grit chip thickness distribution; (3) comparing the grit chip thickness distribution of step (2) to the set target grit chip thickness distribution of step (1); if differences are large, adjusting grit grinding capacity, performing the cycle of the steps (2) and (3), and stopping calculating until the differences between the grit chip thickness distribution of step (3) and the set grit chip thickness distribution of step (1) meet a set standard, so that the grinding capacity is an optimization result. The grinding capacity is optimizedin order to perform processing, so that effective expected processing purposes can be met.

A tight oil reservoir horizontal well staged fracturing fracture parameter design method comprises the steps: acquiring tight oil reservoir geological development data, and establishing a staged fracturing horizontal well development numerical simulation model through the tight oil reservoir geological development data; changing the parameter combination value of the crack spacing and the crack flow conductivity in the horizontal well development numerical simulation model, and calculating the effective production time and the effective cumulative oil yield under the current parameter combination value; establishing a relation curve between the daily average oil production capacity of the tight oil reservoir staged fracturing horizontal well and a fracturing production increasing potentialfactor; and according to the daily average oil production capacity design value of the tight oil reservoir staged fracturing horizontal well, determining the fracture interval and fracture flow conductivity parameter combination value of the staged fracturing horizontal well. According to the tight oil reservoir horizontal well staged fracturing fracture parameter design method, the fracture spacing and fracture flow conductivity combined scheme matched with the daily average oil production capacity design value of the tight oil reservoir staged fracturing horizontal well can be rapidly and accurately determined, and the tight oil reservoir horizontal well staged fracturing fracture parameter design method is beneficial to improving the staged fracturing design efficiency of the tight oilreservoir horizontal well.

The invention discloses a wallboard interlayer connection for use at a bottom enhanced part of a laminated shear wall structure. The wallboard interlayer connection comprises a lower laminated wallboard, an upper laminated wallboard, a concrete cushion and connecting rebars. The top of a core area cast-in-place slab of the lower laminated wallboard is pre-provided with two rows of connecting rebars which extend into a core area cast-in-place slab of the upper laminated wallboard and which are then cast in place with the core area cast-in-place slab of the upper laminated wallboard; the strength of the connecting rebars is determined according to the philosophy of capacity design. The connecting rebars allow the laminated shear wall at the bottom enhanced part to be equivalently cast in place; under the seismic action, plastic hinges gathering at a horizontal joint of the laminated shear walls can move into the wallboards at the ends of the connecting rebars, and nonlinear deformation never occurs to the interlayer horizontal joint of the laminated wallboards, and the laminated shear wall structure is better in ductility and deformability.

An array type centrifugal body distribution system belongs to the technical field of mechanical design and comprises an adjusting body, a rotating shaft, a rotator, a stretching body, centrifugal bodies, balls, a pull rod and springs; the rotating shaft and the rotator are fixedly connected with each other; both of the stretching body and the centrifugal bodies are distributed in the rotator; the balls are embedded on the stretching body; one side wall of each centrifugal body is in contact with the stretching body through the corresponding ball; the other side walls of the centrifugal bodies are connected with the internal wall surface of the rotator through the first springs; and the top end of the stretching body is connected with the internal wall surface of the rotator through the second spring. According to the system, when the rotate speed of an engine is higher, an adjusting plate moves upward, the total capacity of an exhaust pipe before a turbine is larger, and the pumping loss is less; and when the rotate speed of is engine is lower, the adjusting plate moves downward, the total capacity of the exhaust pipe before the turbine is less, and exhaust pulse energy can be fully utilized. The distributed system is reasonable in design, simple in structure and suitable for the optimal capacity design of the exhaust pipe in a turbo-charging system.

The invention discloses a method for designing the drainage capacity of an urban mountain torrent intercepting and draining system, and belongs to the technical field of urban drainage system engineering. The method for designing the drainage capacity of the urban mountain torrent intercepting and draining system is divided into three parts, firstly, the basic water depth hb of the weir crest is worked out through trial calculation by establishing the relation between the dimensionless number eta and xi, secondly, the quasi-weir water depth htb is worked out according to the overflow orifice line approaching kinetic energy Ep and the discharge flow direction angle theta factor, and thirdly, the weir water depth H is determined according to the reservoir basin shape parameter lambda. The designed urban mountain torrent intercepting and draining system is completely matched with actual engineering in drainage capacity, and the technical problems that due to the fact that no proper designmethod exists, the drainage capacity cannot be determined or the drainage capacity design is seriously insufficient, mountain torrent overflows to cause disasters, and huge economic losses and potential safety hazards are brought to flood control and waterlogging prevention engineering and cities are solved.