35results about How to "Improve power generation stability" patented technology

The invention discloses a distribution network economic optimal dispatching method based on an improved dynamic kriging model, which comprises the following contents: modeling the state of a pumped storage unit; modeling wind turbine output and user load; modeling photovoltaic generator set; putting forward relevant constraint conditions of joint output constraint of a scenery-water combined system and modeling the scenery-water combined system; modeling the economic optimization operation of the distribution network by using the constraint conditions described in step 4; randomly selecting sample points by Monte Carlo simulation and obtaining the corresponding system variables to construct an initial sample database; constructing a gradient-enhanced dynamic Kriging model and obtaining anew sample library by adding gradient information; based on the new sample library, using the BCC optimization algorithm to solve the distribution network economic optimization model. The invention reduces the influence of the power fluctuation brought by the wind-solar new energy and smoothes the wind power and the photovoltaic power generation, improves the power generation stability of the wind-solar new energy, increases the consumption amount of the wind-solar new energy and reduces the investment and operation cost of the distribution network system.

The invention discloses an alternating current-direct current hybrid flexible power distribution network reliability calculation method. The method comprises the following steps that a starting pointand an end point of a reliability calculation path of a distribution unit are determined; a power distribution network reliability module is divided, wherein components weak in influence on reliability or consistent influence result are divided into a basic module; key factors of the influence on the reliability are divided into a separate block; a single line mode of a flexible direct current transmission system and a three-way parallel connection mode including flexible and straight loops are determined, a load transfer method is determined; according to the connection mode of the distribution unit, a series sub-path and the minimum path set of each calculation load point are determined, and then the outage times and power supply availability of each load point are obtained through calculation; finally, the average index value of the load points is calculated to obtain the overall reliability index of the distribution unit. Accordingly, the reliability of the power distribution network can be greatly improved, and the method can adapt to development of future distributed power supply, energy storage and direct current load in a high reliability power supply area.

The invention discloses a pipeline power generation micro hydraulic turbine set. The pipeline power generation micro hydraulic turbine set comprises hydraulic turbine set units located inside and outside a pipeline, and a power generation rectification unit. Each hydraulic turbine set unit is composed of a spindle and at least two impellers, wherein the spindle is connected with the impellers, theimpellers and the spindle are in clearance fit, and the flow incident faces of the impellers are perpendicular to the inflowing direction so that the impellers can rotate to drive the spindle to rotate. At least two spindles are arranged in the pipeline. The power generation rectification unit comprises a gear speed-increasing box, a permanent magnet generator and a rectification circuit. Bearings for positioning the spindles are arranged in the positions where the spindles penetrate through the outer wall of the pipeline, and sealing rings are arranged between the bearings and the gear speed-increasing box and used for preventing liquid from entering the permanent magnet generators. According to the pipeline power generation micro hydraulic turbine set, aiming at the problems of low power generation efficiency and poor stability of a single pipeline hydraulic turbine, the hydraulic kinetic energy is extracted through the hydraulic turbine set adopting an array distribution mode and converted into electric energy, and thus power storage and power supply to small-power electric facilities are achieved.

The invention discloses an islanding protection method of a photovoltaic power generation system. The method is an active islanding protection technology based on dual vector angles. The voltage vector angle obtained before disturbance and the voltage vector angle obtained after disturbance are adopted by the technology, and disturbance components are extracted and blended in the Sandia islanding protection technology. The method not only improves the islanding protection performance of the photovoltaic system, but also overcomes the shortcoming of active power fluctuation caused by a traditional phase perturbation algorithm, and improves the output power performance of inverters in the normal operating process.

The invention discloses a foldable type tidal current power generation and seawater desalination integrated group. The foldable type tidal current power generation and seawater desalination integrated group comprises a hydraulic energy power generation module, a seawater desalination module and a circuit control module. The circuit control module comprises a controller and a voltage stabilizer; the hydraulic energy power generation module comprises a power generator and an energy collection system; the seawater desalination module comprises a seawater pump, a booster pump and a high-pressure pump; the first end of the controller is connected with the output end of the hydraulic energy power generation module through the voltage stabilizer; and the second end of the controller is connected with the seawater pump, the booster pump and the high-pressure pump in the seawater desalination module in parallel. The foldable type tidal current power generation and seawater desalination integrated group not only can be used for power generation and utilization, but also can make tidal current energy be directly used for seawater desalination when power is not needed, thereby achieving multi-stage utilization of the tidal current energy, effectively utilizing resources, avoiding the problem of power storage, reducing cost and avoiding resource waste.

The invention provides a super-flexible self-generating yarn, a full-fiber-based super-flexible thermoelectric self-generating fabric and a preparation method thereof. According to the super-flexible self-generating yarn, a P-type thermoelectric material composed of PEDOT: PSS and ionic liquid is adopted to conduct coating modification on fibers or yarns, the film-forming property of PEDOT: PSS is remarkably improved, the yarn flexibility is enhanced, and meanwhile the thermoelectric property of the yarns is improved. An N-type thermoelectric material and the P-type thermoelectric material are coated on the surface of a yarn base material in an adjacent mode and are connected through electrodes to form a series thermoelectric path. The flexibility, thermoelectricity and power generation stability of the prepared full-fiber-based super-flexible thermoelectric self-power-generating fabric are remarkably improved, and an effective way is provided for the full-fiber-based super-flexible thermoelectric self-power-generating fabric. Therefore, the super-flexible self-generating yarn has relatively high popularization and application values in the fields of sensing device power supply, intelligent clothing and wearable electronic devices.

The embodiment of the invention discloses a control method and device of wave energy power generation equipment and a wave energy power generation system. The method comprises the steps of obtaining the pressure in a hydraulic pipeline, and judging whether the pressure in the hydraulic pipeline is in a preset pressure range or not; when the pressure is in the preset pressure range, determining theoptimal rotating speed of a hydraulic motor according to the pressure in the hydraulic pipeline, and controlling the rotating speed of the hydraulic motor to be the optimal rotating speed; when the pressure in the hydraulic pipeline is greater than the upper limit pressure of the preset pressure range, starting a pressure reducing valve to reduce pressure until the pressure in the hydraulic pipeline is in the preset pressure range; or when the pressure in the hydraulic pipeline is smaller than the lower limit pressure of the preset pressure range, controlling the hydraulic motor to stop rotating, and controlling an energy accumulator to store energy until the pressure in the hydraulic pipeline is in the preset pressure range. The maximization of energy conversion is realized, the conversion efficiency is improved, and the wave energy power generation equipment can stably and efficiently generate power.

The invention discloses a power generation device which comprises a wind driven generator, a hydroelectric generator, a solar generator, a first variable gear, a second variable gear, a circular flatplate, a wind plate, a floating plate, a water wheel blade, a connecting rod, anchoring equipment and a vertical shaft. According to the vertical shaft combined type floating comprehensive power generation device, two single-energy power generation devices, namely the vertical shaft fixed deflection angle type water turbine and the wind turbine with good self-starting performance, are organicallycombined, so that based on that the starting torque of the wind turbine is large, the vertical shaft water turbine is assisted to be started, and the vertical shaft water turbine can be started to rotate in any wind direction; thus, operation efficiency of water turbine is improved. The power generation device is a comprehensive power generation body and achieves diversified power generation, water and underwater all-weather power generation can be achieved at the same time, the stability and reliability of operation of a generator set are improved, the unit power generation cost is reduced, and the unit power generation efficiency is improved.

A fuel cell stack includes a stack body of power generation cells stacked in a horizontal direction. An oxygen-containing gas flow field is formed in the fuel cell stack, for allowing an oxygen-containing gas to flow along an electrode surface of a membrane electrode assembly. A plurality of oxygen-containing gas discharge passages for discharging the oxygen-containing gas as a reactant gas pass through the fuel cell stack in a stacking direction of the power generation cells. Each of the oxygen-containing gas discharge passages is connected to an outlet. The plurality of oxygen-containing gas discharge passages are connected together by a first connection channel at an end opposite to the outlet.

A fuel cell stack at least includes a stack body formed by stacking a plurality of power generation cells in a stacking direction and a first dummy cell provided at one end of the stack body in the stacking direction. The power generation cell includes a membrane electrode assembly. The first dummy cell includes a dummy assembly formed by stacking together three electrically conductive porous bodies each having a different surface size, a dummy resin frame member formed around the dummy assembly, and dummy separators.

The invention discloses a low-medium-time concentrating photovoltaic module, which comprises a battery module and a heat radiation module, wherein the heat radiation module comprises an interlayer water tank realizing heat radiation through water circulation and a horn antenna realizing heat radiation through radiation, the interlayer water tank is arranged at the back surface of the battery module, the horn antenna is arranged at the front surface of the battery module, and the battery module and the horn antenna are integrally formed to form a unit body mechanism. The low-medium-time concentrating photovoltaic module has the advantages that an integration technology is applied, the concentrating photovoltaic module with higher element heat radiation requirements and a temperature reduction temperature are in integral arrangement to form the module, meanwhile, two heat radiation structures are adopted, the heat radiation efficiency can be effectively improved, the electricity generating stability of a system and the element heating protection efficiency can be improved, the safety and stability requirements of light electricity generation are met, and in addition, the service life is prolonged.

A fuel cell stack at least includes a stack body including a plurality of power generation cells each having a membrane electrode assembly stacked in a stacking direction, and a first dummy cell provided at one end of the stack body in the stacking direction. A dummy structural body of the first dummy cell is joined to a dummy resin frame member through an adhesive layer which adheres a first outer peripheral portion and a second outer peripheral portion, and inner periphery of the dummy resin frame member to each other.

The invention relates to a chemical bath deposition method and a CIGS photovoltaic module preparation method. The chemical bath deposition method comprises the steps that a substrate is provided; a first functional layer and a composite material layer are respectively formed on opposite sides of the substrate, and the composite material layer comprises polymer hydrogel and magnetic nanoparticles mixed in the polymer hydrogel; the substrate with the first functional layer and the composite material layer is placed in a deposition solution, and the solution is deposited on the first functional layer to form a second functional layer; and the composite material layer is separated from the substrate. The chemical bath deposition method is adopted to the CIGS photovoltaic module preparation method. According to the chemical bath deposition method, the composite material layer is formed on one side of the substrate to be a protection layer, so that the side of the substrate is not in contact with the deposition solution; and meanwhile, the polymer hydrogel in the composite material layer swells in the reaction liquid, so that the circulation of the reaction liquid on the side of the substrate is reduced, invalid deposition of the second functional layer on the composite material layer is avoided, and the composite material layer is convenient to remove.

The embodiment of the invention provides an offshore floating type power generation platform. The offshore floating type power generation platform comprises a wind generating set, a tower drum, a floating type foundation and a hydrodynamic power generation device. The wind generating set is installed at the top end of the tower drum, and the bottom of the tower drum is connected to the floating type foundation. The hydrodynamic power generation device is installed in the floating type foundation and used for absorbing at least part of seawater energy acting on the floating type foundation forpower generation in the process that the floating type foundation moves along with waves. According to the offshore floating type power generation platform, the motion response of the floating type foundation on waves can be reduced, and the power generation stability of the floating type wind generating set is improved.

The invention discloses a distribution network economic optimization dispatching method based on the improved dynamic Kriskin model, which includes: modeling the state of the pumped storage unit; modeling the output of the wind power unit and the load of the user; Modeling; put forward the relevant constraint conditions of the joint output constraints of the wind-solar-water combined system, and model the wind-solar-water combined system; use the constraints described in step 4 to model the economic optimization operation of the distribution network; use Montecatello simulation to randomly select samples points, obtain the corresponding system variables, and build an initial sample library; build a gradient-enhanced dynamic Kriging model, add gradient information to screen to obtain a new sample library; use the BCC optimization algorithm to solve the distribution network economic optimization model on the basis of the new sample library . The invention takes into account the reduction of the influence of power fluctuations caused by grid-connected wind and solar new energy and smooth wind power and photovoltaic power generation, improves the power generation stability of wind and solar new energy, increases its consumption and reduces the investment and operation cost of the distribution network system.

An embodiment of the present invention provides an offshore floating power generation platform. The offshore floating power generation platform includes a wind power generating set, a tower, a floating foundation and a hydrodynamic power generation device. The wind turbine is installed on the top of the tower, and the bottom of the tower is connected to the floating foundation. The hydrodynamic power generation device is installed inside the floating foundation, and is used for generating electricity by absorbing at least part of seawater energy acting on the floating foundation when the floating foundation moves with waves. The offshore floating power generation platform of the embodiment of the present invention can reduce the movement response of the floating foundation on waves, and improve the power generation stability of the floating wind power generating set.

The invention discloses a wave energy power generation device. The wave energy power generation device comprises a sealing outer shell, and an overall motion unit, a direct-current motor II and a geararranged in the sealing outer shell; the overall motion unit is radially limited in the sealing outer shell, and can move up and down; the overall motion unit comprises an inner shell, a direct-current motor I, an eccentric wheel, a first main shaft, a second main shaft and a rack; the direct-current motor I, the inner shell and the second main shaft are arranged from top to bottom; the eccentricwheel is positioned in the inner shell, and is mounted on the first main shaft; an output shaft of the direct-current motor I is connected with the first main shaft; the upper end of the second mainshaft is fixed at the lower end of the inner shell; the rack is arranged at the lower part of the second main shaft; the gear is engaged with the rack; the gear is arranged on an output shaft of the direct-current motor II; when waves drive the sealing outer shell to move, the sealing outer shell and the overall motion unit are relatively displaced to urge the eccentric wheel to rotate around thefirst main shaft so as to drive the direct-current motor I to generate electricity; and through engagement between the gear and the rack, the direct-current motor II is driven to generate the electricity.

The invention discloses a low-medium-time concentrating photovoltaic module, which comprises a battery module and a heat radiation module, wherein the heat radiation module comprises an interlayer water tank realizing heat radiation through water circulation and a horn antenna realizing heat radiation through radiation, the interlayer water tank is arranged at the back surface of the battery module, the horn antenna is arranged at the front surface of the battery module, and the battery module and the horn antenna are integrally formed to form a unit body mechanism. The low-medium-time concentrating photovoltaic module has the advantages that an integration technology is applied, the concentrating photovoltaic module with higher element heat radiation requirements and a temperature reduction temperature are in integral arrangement to form the module, meanwhile, two heat radiation structures are adopted, the heat radiation efficiency can be effectively improved, the electricity generating stability of a system and the element heating protection efficiency can be improved, the safety and stability requirements of light electricity generation are met, and in addition, the service life is prolonged.

The invention discloses a railway freight car fault diagnosis system based on power supply sharing, which includes: N sensors, M hosts and connecting circuits; wherein, several sensors and / or several hosts have power generation functions; N and M are positive Integer; the power sharing end of each sensor and the power sharing end of each host are connected to each other through the connecting circuit; the sensors with power generation function and / or the host include anti-reverse components, and the anti-reverse components are set on the sensors with power generation function and / or between the output end of the power generation component of the host and the power sharing end; both the sensor and the power sharing end of the host are connected to their own energy-consuming circuits. The present invention enables each sensor and the host to maintain a relatively stable voltage state for work through power sharing among the internal sensors, between the sensor and the host, and between the hosts, thereby improving power generation stability and device reliability.

In a fuel cell stack, a stack body includes a plurality of power generation cells stacked in a stacking direction, and a first dummy cell is provided at one end of the stack body in the stacking direction. The first dummy cell includes a dummy assembly, a dummy resin frame member, and a dummy joint separator. The dummy resin member includes a first resin sheet and a second resin sheet. An inner exposed portion is provided in an inner periphery of the first resin sheet. The inner exposed portion extends inward beyond an inner end of the second resin sheet. A first heat welding portion is provided discontinuously in a stack part where the inner exposed portion and the first electrically conductive porous sheet of the dummy assembly are stacked together. The dummy resin frame member and the dummy assembly are joined together by the first heat welding portion.

The embodiment of the invention provides a data center machine room system. The data center machine room system comprises a machine room body, a temperature measuring device and a modified standby small wind power generator, wherein the temperature measuring device comprises a temperature measuring fiber and a fiber demodulator; the machine room body is provided with a fiber cabling rack, and thetemperature measuring fiber is disposed around a server, a network switch, and a memory along the fiber cabling rack; and the fiber demodulator is connected with the temperature measuring fiber, and atemperature signal of each temperature measuring point on the temperature measuring fiber is collected in real time, and each temperature signal is converted into an electrical signal and is transmitted to a monitor terminal through a communication interface. Through the data center machine room system, the construction efficiency of a data center machine room is improved, the power generation stability of a standby power is improved, the power generation power is improved, and meanwhile, the change of the ambient temperature in the machine room body can be comprehensively monitored in real time.

The embodiment of the present invention discloses a control method and device for wave energy power generation equipment, and a wave energy power generation system. By obtaining the pressure in the hydraulic pipeline in real time; judging whether the pressure in the hydraulic pipeline is within the preset pressure range; and when When it is in the preset pressure range, according to the pressure in the hydraulic pipeline, determine the optimal speed of the hydraulic motor, and control the speed of the hydraulic motor to the optimal speed; and when the pressure in the hydraulic pipeline is greater than the upper limit of the preset pressure range When the pressure is high, start the pressure reducing valve to decompress until the pressure in the hydraulic pipeline is within the preset pressure range; or, when the pressure in the hydraulic pipeline is lower than the lower limit pressure of the preset pressure range, control the hydraulic motor to stop rotating, And control the accumulator to store energy until the pressure in the hydraulic pipeline is within the preset pressure range. The embodiment of the present invention realizes the maximization of energy conversion and improves the conversion efficiency, so that the wave energy generating equipment can generate stable and efficient power generation.

The invention discloses an alternating current-direct current hybrid flexible power distribution network reliability calculation method. The method comprises the following steps that a starting pointand an end point of a reliability calculation path of a distribution unit are determined; a power distribution network reliability module is divided, wherein components weak in influence on reliability or consistent influence result are divided into a basic module; key factors of the influence on the reliability are divided into a separate block; a single line mode of a flexible direct current transmission system and a three-way parallel connection mode including flexible and straight loops are determined, a load transfer method is determined; according to the connection mode of the distribution unit, a series sub-path and the minimum path set of each calculation load point are determined, and then the outage times and power supply availability of each load point are obtained through calculation; finally, the average index value of the load points is calculated to obtain the overall reliability index of the distribution unit. Accordingly, the reliability of the power distribution network can be greatly improved, and the method can adapt to development of future distributed power supply, energy storage and direct current load in a high reliability power supply area.

The invention discloses a railway truck fault diagnosis system on the basis of power sharing. The railway truck fault diagnosis system comprises N sensors, M main units and connecting circuits. The sensors and / or the main units have power generation functions; the N and the M are positive integers; power sharing ends of the N sensors and power sharing ends of the various main units are communicated with one another via the connecting circuits; the sensors with the power generation functions and / or the main units with the power generation functions are provided with anti-backward assemblies, and the anti-backward assemblies are arranged between output ends of power generation assemblies of the sensors with the power generation functions and / or the main units with the power generation functions and the power sharing ends of the sensors with the power generation functions and / or the main units with the power generation functions; local energy dissipation circuits are connected with the power sharing ends of the sensors and the main units. The railway truck fault diagnosis system has the advantages that the various sensors and the main units can keep in relatively stable voltage statesto work by the aid of power sharing between the various internal sensors, between the sensors and the main units and between the main units, and accordingly the power generation stability and the reliability of devices can be improved.