79results about How to "Increase output capacity" patented technology

The invention provides an active power intelligent control system and an active power intelligent control method for a cluster wind farm. Stable and reliable operation of a power grid under various operation modes is guaranteed, the transmission capacity of the power grid and the acceptance capacity to wind power are improved to the greatest extent, meanwhile, intelligentization of a scheduling decision is realized, and a wind farm power generation plan is automatically calculated and issued, so that maximal effort of the wind farm is realized, miniaturization and optimization of a wind driven generating set under a condition that an accident occurs in the power grid are guaranteed, and the aim of fully utilizing new resources such as wind energy is fulfilled.

The invention discloses a gas-magnetic mixed suspension type of 6-DOF (degree of freedom) planar motor comprising a stator substrate placed on the horizontal XY plane and a mover substrate floating on the stator substrate and parallel to the stator substrate. The four angles on the upper surface of the stator substrate are respectively provided with a first permanent magnet array, a second permanent magnet array, a third permanent magnet array and a fourth permanent magnet array. The wavelength direction of the first permanent magnet array and the third permanent magnet array thereof is the same with X axis and the wavelength direction of the second permanent magnet array and the fourth permanent magnet array is the same with Y axis. The four angles of the lower surface of the mover substrate are respectively provided with a first thrust winding, a second thrust winding, a third thrust winding and a fourth thrust winding. The wavelength direction of the first thrust winding and the third thrust winding thereof is the same with X axis and the wavelength direction of the second thrust winding and the fourth thrust winding is the same with Y axis. The four angles of the lower surface of the moving substrate are respectively provided with a first aerostatic bearing air cushion, a second aerostatic bearing air cushion, a third aerostatic bearing air cushion and a fourth aerostatic bearing air cushion.

The invention belongs to the technical field of wind generation set control, and particularly relates to an SCADA data-based yaw control parameter optimization method for a wind generation set. The method specifically comprises the steps that firstly, parameter optimization intervals are determined; the optimization ranges of optimized yaw control parameters, namely yaw deviation threshold values and delay time; SCADA data is preprocessed; an initial population is generated; fitness function values are calculated; the selection probability Psi of each individual is calculated on the basis of the fitness function values; selection is performed by adopting a roulette wheel method, so that a parent is obtained for breeding a next-generation population; a new population is generated from the initial population by utilizing a crossover operator and a mutation operator; and if the number of iterations is larger than a maximum number of genetic generations, calculation is terminated, and optimum yaw deviation threshold values and delay time are output. By adopting the method, an optimized result has a higher self-adaption level and higher pertinence; and the output performance of the generation set is obviously enhanced, and yaw time cannot be obviously improved.

The invention discloses a composite cathode material for a thermal battery suitable for long-time terminal heavy current discharge. The composite cathode material is characterized by being prepared from the following components by mass fraction: 30 to 50 percent of CoS2, 30 to 50 percent of NiS2, 1 to 3 percent of Li2O, 15 to 30 percent of an ion conductive agent and 0.5 to 2 percent of an electronic conductor. By adding a NiS2 cathode material, elemental nickel with high conductivity is generated by the NiS2 cathode material in the self-discharge process, and further the later conductivity ofan electrode material is improved; secondly, the conductivity of the whole composite cathode material is improved without affecting the output capacity of the composite cathode material due to the addition of a small amount of a carbon nanotube electronic conductor with high conductivity; and finally, due to the addition of the ion conductive agent, the migration rate of Li<+> in the electrode reaction process is improved and the concentration polarization in the reaction process is reduced.

The invention discloses a cascaded high-voltage inverter. The high-voltage inverter comprises a phase-shifting transformer, an inverter and a multi-position selector switch assembly, wherein the inverter is connected with the phase-shifting transformer, and the multi-position selector switch assembly is connected with the inverter; each phase of the inverter further comprises two basic converting chains, and each basic converting chain comprises an H bridge power unit and a sharing reactor; a three-phase voltage is input into the phase-shifting transformer, and supplied as power to the H bridge power unit of the inverter after being reduced through the phase-shifting transformer; the H bridge power unit outputs a single-phase alternating voltage through rectification, filtration and inversion; and the serial and parallel connection mode and output mode of each basic converting chain can be changed by changing the on-off state of the multi-position selector switch assembly. According to the cascaded high-voltage inverter, a plurality of H bridge power units are serially connected to form minimum basic converting chains, and the serial and parallel connection combinations and star/triangular conversion of a plurality of basic converting chains are controlled by shifting a multi-position switch, so that full capacity output of various voltage-level converters can be realized, and the inverter is simple in structure and multi-purpose.

The invention discloses a multi-winding double-salient-pole generator and an output transformation and control device, and particularly relates to an aviation generator. A three-phase 12/8 pole single-winding double-salient-pole generator is adopted, and four sets of armature windings with three phases of A, B and C are wound on a stator slot together; and (al1, bl1, cl1) and (al2, bl2, cl2) form two sets of low-voltage three-phase windings, and (ah1, bh1, ch1) and (ah2, bh2, ch2) form two sets of high-voltage three-phase windings, wherein (al1, al2, ah1 and ah2), (bl1, bl2, bh1 and bh2), and (cl1, cl2, ch1 and ch2) are placed in the same slot respectively, and each set of the windings and a power conversion device of each set of the windings form an independent generation channel. By using the multi-winding double-salient-pole generator and the output transformation and control device disclosed by the invention, 28.5V, 28.5V/57V, 0-70V, 115V/200V and 400Hz intermediate frequency communications, and the output of a 270V high-voltage direct current power supply are realized.

The invention provides a synchronous reluctance motor sensorless direct torque control system based on power compensation. The system comprises a first subtractor, a first PI module, a second subtractor, a first adder, a torque hysteresis module, a third subtractor, a switch table module, a switch table module, a magnetic linkage hysteresis module, a second adder, a rectifier/inverter module, a stator voltage vector calculation module, a stator magnetic linkage and rotating speed estimating module, an actual motor torque calculation and angle compensation module based on active power calculation, a magnetic linkage given amplitude compensation module based on reactive power calculation, a stator current vector transformation module and a synchronous reluctance motor. The power output capacity of the system is improved by the method that a reactive power calculation output value compensates flux linkage stator flux linkage and an active power calculation output value compensates statorflux linkage angles.

The invention discloses an intelligent electric energy meter on-line monitoring and remote control system. An automatic monitoring detection system comprises an electric energy meter verification device, a network camera, an Ethernet switch, and a meter hanging rack. An automatic load control system comprises a network relay and a host computer control system. A protection system comprises an air switch. The electric energy meter verification device comprises a computer, a signal source, a programmed control power source, a standard electric energy meter, and an error processor. An RS-485 bus way is adopted by communication among various modules in the verification device, and a signal source is used for the unified control of the working of the various modules. An RS232 interface is adopted for the communication between the electric energy meter verification device and a host computer, and the host computer is used to control the meter calibration working of the verification device. Error acquisition operation, determining operation, rounding operation, storage operation, and printing operation are completed at the same time. The real-time on-line monitoring and the remote control of the intelligent electric energy meter are realized effectively and accurately.

The invention discloses an active power filter (APF) device based on double vehicle stability control (VSC) interactive parallelly-connected harmonic compensation open loop and closed loop combination. The APF device comprises a main controller and a plurality of parallelly-connected double VSC interactive parallelly-connected power units, wherein the double VSC interactive parallelly-connected power units adopt double VSC interactive parallelly-connected structures and comprise frontward parts (open loop compensation), shared direct current parts and backward parts (closed loop compensation), the shared direct current parts share the capacitors, the frontward parts and the backward parts are respectively and sequentially connected with a grid-tied inductance and a common-mode inductance in serial mode, converge through a frontward group busbar and a backward group busbar respectively, are combined to a grid through a grid-side compensation point and a load-side compensation point, and load current signals between the grid-side compensation point and the load-side compensation point are transmitted to respective double VSC interactive parallelly-connected power units. The APF device effectively maximums output and simultaneously minimizes total output ripples of the whole machine, and effectively restrains zero sequence circulating current between double VSCs, and the whole machine has the dynamic fast response characteristics of open loop compensation and steady-state high accuracy characteristics of closed loop compensation.

The invention relates to a V-shaped vertical windmill which is mainly composed of a rotatable base seat, primary fan blade supporting arms, auxiliary supporting arms, horizontal connecting rods, a T-shaped column, fan blades, a coupler, a generator, a speed changing box and the like, wherein the primary supporting arms are inclined upwards; the auxiliary supporting arms are arranged on the primary supporting arms; the horizontal connecting rods are connected among the primary supporting arms; a wind wheel is provided with a plurality of primary supporting arms which are inclined upward and form an angle of 30-75 degrees with the water level, so that the whole wind wheel presents a V shape; the fan blades are installed at the top ends of the primary supporting arms; a V-shaped bottom part is used as a fulcrum of the rotation of the windmill; the supporting arms are connected by the horizontal connecting rods for strengthening; the swing of the windmill is controlled by one T-shaped column; the generator, the speed changing box and the like are positioned on a T-shaped column disk, and the weight of the T-shaped column disk is increased by fully utilizing the weights of the generator and the speed changing box; the spreading direction of the fan blades and the vertical direction form an included angle of 0-45 degrees; and the attack angles of the fan blades are regulated by a servo motor and a hydraulic device which are controlled by a computer.

The invention provides a low-voltage ride-through simulation system of a wind power generation set and an application method of the low-voltage ride-through simulation system. The simulation system comprises a simulation power system and a static var generator (SVG), wherein the simulation power system is built by using a real time digital system (RTDS) and is used for simulating the wind power generation set connected to a power grid through a transformer, an AC bus and a power transmission circuit, the power transmission circuit is provided with a short-circuit fault point, a grounding resistor is connected to the short-circuit fault point, and the SVG is connected to the AC bus of the simulation power system. By the low-voltage ride-through simulation system, the low-voltage ride-through capability of the system is inspected on the condition of no influence on the running of the real power system, whether the SVG is needed to be additionally arranged is determined to assist the system to improve the low-voltage ride-through capability, the required output capacity of an SVG device is determined, and thus, a reliable basis is provided for a situation that the SVG is additionally arranged in the real power system to improve the low-voltage ride-through capability.

The invention discloses a hybrid active power filter with a high voltage chain-type structure and a control method thereof. The hybrid active power filter comprises chain-type structure converters, filter reactors and high-pass filters, and is characterized in that each chain-type structure converter is a structure converter with a bypass, each chain-type structure converter adopts an H-bridge module, and DC-side capacitors are mutually independent; and the chain-type structure converters are connected with the high-pass filters in parallel through the filter reactors, then connected to a power grid and respectively connected with one phase in the power grid. The control method is based on the filter structure, and comprises harmonic wave frequency division detection, active power filter harmonic closed-loop control, reactive compensation and APF average DC voltage control, and DC voltage balance control. The hybrid active power filter disclosed by the invention has the advantages of simple and compact structure, low cost, good operation reliability, excellent performance and the like.

The invention provides a power compensation-based sensorless control system for a synchronous reluctance motor. The power compensation-based sensorless control system comprises a first subtractor, a constant voltage-frequency ratio V/F module, a given stator voltage space vector angle theta module, a second subtractor, a reactive power calculation-based voltage amplitude compensation module, an active power calculation-based angle compensation module, a sector calculation module, an SVPWM modulation module, a Clarke transformation module, a rectifier/three-phase inverter module and the synchronous reluctance motor. The invention further provides a power compensation-based sensorless control method for the synchronous reluctance motor; the reactive power calculation-based voltage amplitudecompensation module can output a compensation value of a stator voltage vector amplitude; and the active power calculation-based angle compensation module can output the compensation value of a givenspeed. The output capacity of the synchronous reluctance motor can be improved by adopting a method of outputting a voltage difference value and the compensation value of the given speed as new statorvoltage vector amplitude and given stator voltage space vector angle separately.

The invention belongs to the technical field of woodworking, and particularly relates to a flexible intelligent sorting line and a sorting method for the woodworking industry. The sorting line comprises a material receiving machine, a first conveying line, a centrifugal machine, a second conveying line, a third conveying line, a fourth conveying line, a visual system, a robot gripper, a sorting stock bin, a material taking clamping jaw and a basket loading roller way system which are arranged in sequence. The sorting method comprises the steps that the material receiving machine turns over wood boards to the first conveying line, the single arranged wood boards are thrown out through the centrifugal machine, the conveying direction of the wood boards is converted from the length direction to the width direction through the third conveying line; the plane angle, the front face, the back face and the length size of the wood boards are monitored through the visual system; the robot gripper puts the wood boards into different stations in the sorting bin according to the front faces and the back faces; and the material taking clamping jaw takes out the whole stack of wood boards and puts the wood boards into a turnover basket. According to the flexible intelligent sorting line and the sorting method, the classification and arrangement links of the wood boards after color selection marking are flexibly and intelligently completed, the sorting efficiency is high, errors are not likely to happen, and the device can be compatible with sorting work of the wood boards of multiple specifications.

The invention relates to an optimization method and system of a wind storage combined system based on the Bollinger band theory, and belongs to the field of wind power plant optimization. The method comprises the steps that: firstly, a control mode of the wind storage combined system is selected, wherein the control mode comprises a frequency modulation mode and a tracking plan mode; according to the control mode of the wind storage combined system, an optimal control model of the wind storage combined system is constructed; then the optimization control model of the wind storage combined system is solved by adopting an advanced rolling optimization control method, and the energy storage output condition of the wind storage combined system is adjusted according to a solving result; and finally, whether the wind storage combined system needs to be optimized or not is judged, if the wind storage combined system needs to be optimized, the wind storage combined system is optimized by adopting an energy storage SOC optimization method based on the Bollinger band theory to obtain a planned output adjustment value, and the planned output adjustment value is reported to a dispatching center so as to be adjusted. Thus, the planned output tracking level and the frequency modulation capability of the wind storage combined system can be effectively improved.

The invention discloses a novel box type substation. The structure of the novel box type substation includes a box main body, a heat insulation top cover, a base, a heat dissipating device, an inspection door, heat dissipation windows and a warning sign; the area of the heat insulation top cover is the same as the area of the upper part of the box main body; the heat insulation top cover is arranged on the upper surface of the box main body; the heat insulation top cover is connected with the main box body through electric welding; the area of the base is the same as the area of the lower partof the box main body; the base is arranged on the lower surface of the box main body; the base is connected with the main box body through electric welding; the heat dissipation device is arranged inside the base; the heat dissipation device is connected with the base through a mechanism hub; the inspection door is arranged on the front surface of the box main body; the inspection door and the box main body are connected through a hinge; the heat dissipation windows are arranged at the lower part of the surface of the box main body; and the heat dissipation windows and the box main body are of an integrated structure. According to the novel box type substation of the invention, the heat dissipation device is adopted; heat dissipation can be automatically performed inside the substation according to temperature inside the substation; and the degree of heat dissipation in a transformer room is improved; and the output effect of the substation is effectively enhanced.

The invention provides a test method of a magnetically controlled reactor, which is characterized in that a serial circuit consisting of a capacitor bank and a reactor is connected with a magneticallycontrolled reactor in parallel and then is connected to a test transformer, a parallel resonant method is utilized, and capacitive reactive power of the capacitor bank is utilized to compensate the test transformer when the capacity of the test transformer is in short. When in low voltage, the output capacity of the magnetically controlled reactor is adjusted to ensure that the output capacity isslightly larger than the capacity of the compensated capacitor bank; and when in low voltage and small capacity, resonance points are evaded so as to protect the test equipment and avoid adverse results caused by resonance. Then voltage is boosted, the output capacity of the magnetically controlled reactor is adjusted to lead the output capacity of the test transformer to be minimum; and the voltage is continuously boosted, inductance is adjusted until the voltage and output power born by the magnetically controlled reactor meet test requirements. The test method ensures that the magneticallycontrolled reactor can satisfy design requirement when leaving the factory and run reliably and safely on site, thereby preventing the equipment from doing experiments on the site of a transformer substation and greatly saving manufacturing costs.

A plate-like porous metal body having a three-dimensional mesh-like structure and containing nickel (Ni). The content of the nickel in the porous metal body is 50% by mass or more. The porous metal body has a thickness of 0.10 mm or more and 0.50 mm or less.

The invention discloses a volute-spraying type water turbine, and belongs to the technical field of hydroelectric generation device designing and manufacturing. According to the volute-spraying type water turbine, the output effect can be remarkably improved. The volute-spraying type water turbine comprises a guide water spraying device and a water guide rotating device with a hydraulic driving mechanism. The guide water spraying end of the guide water spraying device is communicated with the driving water flow input end of the water guide rotating device. In the working process of the volute-spraying type water turbine, electric generation driving water flow is input into the water guide rotating device through the guide water spraying device, the electric generation driving water flow input into the water guide rotating device through the guide water spraying device drives the hydraulic driving mechanism to drive the water guide rotating device to rotate around the axial center line of the water guide rotating device.