21results about How to "Reduce power generation" patented technology

The invention belongs to the technical field of virtual power plant instruction decomposition, and particularly relates to a virtual power plant dispatching instruction rapid decomposition method based on multiple agents. According to the method, the change and demand fluctuation of the power system can be more flexibly coped with, the compensation value is calculated based on the historical data and the current state of the intelligent agent, reasonable distribution and optimal use of system resources, loads and power are ensured, the overall operation efficiency of the virtual power plant is improved, and through the setting of the instruction decomposition level, the operation efficiency is improved. Task allocation of the intelligent agents can be dynamically adjusted according to actual conditions, overload of a single intelligent agent is avoided, execution efficiency of scheduling instructions is improved, high-energy-consumption tasks can be preferentially arranged when power is low by combining current power data, or generating capacity and operation cost are reduced when the power is high, economic benefits are improved, and the method is suitable for large-scale popularization and application. Compensation value calculation and decision making are carried out by utilizing historical data of the intelligent agent, so that the scientificity and accuracy of dispatching instruction decomposition are improved, and the influence of uncertain factors in the dispatching process is reduced.

The invention belongs to the technical field of coal-fired power generation, and particularly relates to a Carnot battery system based on a coal-fired power generation unit and an operation method of the Carnot battery system. The Carnot cell system comprises a heat pump system taking supercritical carbon dioxide as a working medium, a heat storage system and a coal-fired power generation system; the heat pump system comprises a first compressor, a second compressor, a first heat regenerator, a second heat regenerator, a third heat regenerator, a first turbine and a second turbine; the heat storage system comprises a hot tank and a cold tank; the coal-fired power generation system comprises a coal-fired boiler, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a power generator, a condenser, an eighth low-pressure heater, a seventh low-pressure heater, a sixth low-pressure heater, a fifth low-pressure heater, a deaerator, a first high-pressure heater, a second high-pressure heater and a third high-pressure heater. The split-flow compression process and the split-flow expansion process are matched with the multi-stage heat regenerator and the multi-stage fused salt heater, the energy efficiency coefficient of the Carnot battery in the electricity-to-heat conversion process is improved, and therefore the round-trip efficiency of the Carnot battery is improved.

The present invention discloses a cascade heat storage system and working method for a molten salt coupled thermal power unit. The present invention provides a first molten salt heater and a second molten salt heater, respectively using the middle exhaust steam and the hot re-extraction steam to gradually heat the molten salt, and further using the electric molten salt heater to store heat, raising the molten salt temperature from 200°C to 600°C, adjusting the heat storage mode from the original full use of electric heat storage to more use of high-temperature steam and less use of electric heat storage, from full use of the terminal product of the coal-fired power plant - electric energy to more use of the intermediate product - middle exhaust steam and hot re-extraction steam, reducing the heat storage cost, and in the long run can greatly improve the economic efficiency of the molten salt storage and heat release cycle operation. At the same time, during the heat storage process, since part of the middle pressure cylinder exhaust steam and the hot re-extraction steam do not enter the low pressure cylinder and the middle pressure cylinder to do work, the power generation of the unit is reduced to achieve the purpose of rapid load reduction.

The invention discloses a full-direct-current offshore wind power system zero-voltage ride-through method, equipment and a medium, and relates to the field of full-direct-current offshore wind power. The objective of the invention is to solve the problem that a receiving-end converter station cannot transmit power when a land AC power grid breaks down. When the high-voltage direct-current voltage of the offshore direct-current transformer exceeds the first preset threshold value, the medium-voltage direct-current voltage control of the offshore direct-current transformer is switched to the high-voltage direct-current voltage control, so that the offshore direct-current transformer absorbs power from a high-voltage direct-current link; when the medium-voltage direct-current voltage of the fan direct-current transformer exceeds a second preset threshold value, the fan direct-current transformer is switched from low-voltage direct-current voltage control to medium-voltage direct-current voltage control, so that the fan direct-current transformer can absorb power from the low-voltage direct-current voltage side through a fan grid-side direct-current transformer; and when the low-voltage direct-current voltage of the offshore direct-current transformer exceeds a third preset threshold value, the brake resistor is activated to dissipate surplus power until the low-voltage direct-current voltage is lower than a fourth preset threshold value.

The invention provides a hybrid energy storage charge state control method and device, and the method comprises the steps: predicting the daily generating capacity of a photovoltaic power station according to a historical database; according to the historical database, the occurrence probability of the extreme weather in the target time period is judged; when the occurrence probability is high, judging the severity of the extreme weather in the target time period; predicting the duration of the extreme weather according to the severity; predicting the daily generating capacity of the photovoltaic power station in extreme weather according to the severity; according to the work plan, obtaining the daily power consumption when the extreme weather occurs; and according to the extreme weather duration, the extreme weather generating capacity and the power consumption, obtaining target power storage capacity. According to the invention, at least the required electric quantity is predicted before the extreme weather, and a part of electric quantity is stored before the extreme weather for emergency use, so that equipment damage caused by unstable current in the extreme weather is avoided, and the power utilization cost is reduced.

The invention relates to the field of oil field energy supply, and discloses an oil field united station energy supply system and method based on carbon dioxide energy storage and waste water hydrogen production. The carbon dioxide energy storage device is configured to selectively store or release electric energy by using carbon dioxide generated by the oil field united station; the production load comprises a hydrogen production device, and the hydrogen production device is configured to produce hydrogen by using the production wastewater of the oil field united station; the power distribution device is electrically connected with the clean energy power generation device, the carbon dioxide energy storage device and the hydrogen production device; and the energy management device monitors the power generation power of the clean energy power generation device and the electricity utilization power of the production load, and controls the operation of the carbon dioxide energy storage device according to the power generation power and the electricity utilization power. The safe, efficient and stable energy supply system can be provided, the discharge amount of carbon dioxide and waste water can be reduced, and the utilization rate of clean energy is increased.

The invention discloses a photovoltaic module and a photovoltaic power grid utilization rate improving system, and relates to the technical field of photovoltaic equipment, the photovoltaic module and the photovoltaic power grid utilization rate improving system comprise a reflective bottom plate parallel to the ground and a reflective side plate perpendicular to the reflective bottom plate, and the reflective side plate is connected with a plurality of parallel thin film double-sided photovoltaic plates through memory alloy plates. Each thin-film double-sided photovoltaic panel is respectively perpendicular to the reflective bottom plate and the reflective side plate, each memory alloy plate comprises two memory alloy sheets which are riveted into a whole, two sides of each thin-film double-sided photovoltaic panel are respectively connected with one memory alloy sheet, a plurality of sliding seats are connected onto the reflective side plate in a sliding manner, and each sliding seat is respectively and rotatably connected with a rotating strip. According to the invention, the structural arrangement of the photovoltaic module is changed, and the power generation capacity is improved and reduced at noon, so that the consistency of the photovoltaic power generation curve of the photovoltaic module and the power grid demand is improved from the source, the power quality of photovoltaic power generation and the safety of accessing the power grid are greatly improved, and the photovoltaic grid price and the power grid utilization efficiency are greatly improved.

The invention provides a coal-fired power plant load scheduling method, device and equipment and a medium, and belongs to the technical field of power plant coincidence scheduling. The method comprises the following steps of: distributing electric quantity according to a preset proportion by acquiring power load of a power grid and generating capacity of a coal-fired power plant; identifying a first power grid with the distributed electric quantity lower than the reference load and a second power grid with the distributed electric quantity higher than the actual load, and calculating the to-be-compensated electric quantity of the first power grid and the to-be-abandoned electric quantity of the second power grid. And if the to-be-compensated electric quantity of the first power grid is smaller than the to-be-abandoned electric quantity of the second power grid, the former is compensated by the latter, and the residual difference value is stored in the energy storage system as to-be-stored electric quantity. According to the invention, by optimizing the distribution of the generating capacity of the coal-fired power plant, balancing the load of the power grid, reducing the transmission loss, improving the economic benefit and enhancing the flexibility of the system, the utilization of renewable energy sources is effectively promoted, and the overall operation efficiency of the power system is improved.

The utility model relates to the technical field of regulator, concretely relates to a regulator with temperature protection function, regulator body, back cover, integrated circuit and temperature sensor, the recess is arranged to the lower surface of regulator body, the back cover can be connected in the recess along the mouth and is formed with the cavity structure with the recess cooperation, the integrated circuit is arranged in the cavity structure, the boss is arranged on the back cover, the boss is hollow structure, the temperature sensor is arranged in the lower end in this boss, the temperature sensor is connected on the integrated circuit through the wire, among them, the regulator with temperature protection function is installed on the generator back cover, the boss lower end can contact the copper line on the stator assembly of generator. The boss contacts on the copper line on the stator assembly, the heat that the copper line of stator assembly sends out can be passed through the boss and is delivered to the temperature sensor in the working process of generator, the temperature sensor is connected with the integrated circuit, and the integrated circuit adjusts the duty cycle of generator through the temperature value of measurement.

The invention discloses a method and a system for processing heavy soda ash by utilizing nuclear energy combined heat and power generation energy supply, and relates to the technical field of trona production. The method comprises the following steps: pretreating brine to obtain refined brine; carrying out steam stripping decomposition on the refined brine by using nuclear energy combined heat and power generation steam to obtain concentrated brine with Na2CO3 as a main component; the method comprises the following steps: carrying out multiple-effect evaporation on concentrated brine of which the main component is Na2CO3 by using nuclear energy combined heat and power generation steam, wherein Na2CO3 is separated out in a monohydrate sodium carbonate Na2CO3.H2O crystal form; carrying out centrifugal drying treatment on the monohydrate alkali crystal and the mother liquor by utilizing nuclear energy combined heat and power generation electric energy; and calcining the dried material by using nuclear energy combined heat and power generation steam to remove crystal water in the dried material, thereby obtaining the heavy sodium carbonate Na2CO3. According to the invention, the steam production quantity of the nuclear reactor is increased, and the steam power generation quantity of the nuclear reactor is correspondingly reduced, so that a large amount of energy loss generated when low-grade energy is converted into high-grade energy is reduced, and the overall efficiency is improved.

The utility model provides a flood prevention buoy for a water conservancy project and belongs to the technical field of flood prevention buoys. Comprising a floating body, the top of the floating body is provided with a plurality of inclined planes which are arranged in a circumferential mode, the middle of the top of the floating body is fixedly connected with a mounting frame, the mounting frame is a polyhedron, the number of the mounting frame is consistent with that of the inclined planes, each side face of the mounting frame is inclined, and a frame is fixedly connected to the upper portion of each side face. First sliding grooves are formed in the two sides of the frame correspondingly, photovoltaic panels parallel to the side faces of the mounting frame are arranged on the side faces of the mounting frame correspondingly, and a first cleaning mechanism used for cleaning the photovoltaic panels is mounted on the frame. According to the utility model, through the arrangement of the first cleaning mechanism, the cleaning roller can clean the outer surface of the photovoltaic panel in the sliding process, and the problems that the light transmittance and the heat dissipation efficiency of the photovoltaic panel are reduced, the generating capacity is reduced, the temperature of the photovoltaic panel is increased, and normal use is affected due to the fact that dust stays on the photovoltaic panel and shields the photovoltaic panel are solved.

The present invention discloses a single-tank molten salt thermocline layer heat storage system and method for a coal-fired power generation unit, comprising a molten salt thermocline layer heat storage tank, a first heat exchanger and a second heat exchanger; the molten salt outlet at the top of the molten salt thermocline layer heat storage tank is respectively connected to the first heat exchanger and the second heat exchanger; the bottom outlet of the molten salt thermocline layer heat storage tank is connected to the first heat exchanger, and the outlet of the first heat exchanger is connected to the inlet of the molten salt thermocline layer heat storage tank; the steam inlet of the first heat exchanger is connected to the high-pressure cylinder of the steam turbine and the low-pressure cylinder of the steam turbine, and the steam outlet of the first heat exchanger is connected to the steam inlet of the low-pressure cylinder of the steam turbine and the inlet of the boiler; the molten salt outlet of the second heat exchanger is connected to the molten salt inlet at the bottom of the molten salt thermocline layer heat storage tank, and the second heat exchanger is connected to a heating system; the system described in the present invention helps to achieve rapid response to changes in grid load, can effectively improve the flexibility and peak-shaving capability of unit operation, and helps to improve the long-term stable operation capability of the unit.

The invention relates to the technical field of steam turbine power generation, and discloses a steam turbine driven power generation device which comprises a steam boiler, a steam turbine, an asynchronous motor, a driven machine and an adjusting system. Steam output by the steam boiler is divided into two paths, one path enters the steam turbine to do work to drive the asynchronous motor and the fan to generate electricity and supply gas, and the steam after working enters the heat exchanger; and the other path enters the heat exchanger after passing through the temperature and pressure reducer. The asynchronous motor is connected with the turbine and the fan through the speed reducer, the overrun clutch and the coupler, and conversion between power generation and power receiving is achieved. A steam turbine rotor is a sleeved type flexible rotor, an impeller is of a rigid conical impeller structure, a partition plate body is made of alloy steel, and partition plate steam blades are in a shroud ring welding mode. The load of the asynchronous motor is changed through the adjusting system, gradient utilization of steam energy is achieved, and economic benefits of enterprises are improved.

The present invention discloses a distributed multi-energy nanogrid monitoring method and system, which includes: obtaining the geographical location, energy storage parameters, outdoor temperature and electrolyte temperature of each battery pack of an all-vanadium liquid flow battery energy storage station; searching a preset power generation site management database based on the geographical location to obtain site information of several power generation sites that meet the preset same network relationship; obtaining the load / power consumption information of the local power grid based on the geographical location of the all-vanadium liquid flow battery energy storage station; analyzing the load / power consumption information of the local power grid to obtain 24-hour power consumption change information; analyzing the site information of each power station to obtain 24-hour power generation change and grid connection parameters; obtaining peak power consumption period, low power consumption period and other periods according to the historical 24-hour power consumption change information; each power consumption period performs energy storage and energy storage discharge based on the total power generation and power demand. The present application has the effect of better matching the energy consumption characteristics of the power grid.

The present invention discloses a photovoltaic module and a photovoltaic power grid utilization rate improvement system, which relates to the field of photovoltaic equipment technology, including a reflective bottom plate parallel to the ground and a reflective side plate perpendicular to the reflective bottom plate, a plurality of parallel thin-film double-sided photovoltaic panels are connected to the reflective side plate through a memory alloy plate, each thin-film double-sided photovoltaic panel is perpendicular to the reflective bottom plate and the reflective side plate, each memory alloy plate includes two memory alloy sheets riveted into one, and the two sides of the thin-film double-sided photovoltaic panel are respectively connected to a memory alloy sheet, and a plurality of slides are slidably connected to the reflective side plate, and a rotating bar is rotatably connected to each slide. In the present invention, the structural arrangement of the photovoltaic module is changed to achieve an increase in power generation in the morning and afternoon and a decrease in power generation at noon, so that the consistency of the photovoltaic power generation curve of the photovoltaic module with the power grid demand is improved from the source, the power quality of photovoltaic power generation and the safety of access to the power grid are greatly improved, and the photovoltaic grid price and power grid utilization efficiency are greatly improved.

The invention relates to the technical field of boiler flue gas waste heat utilization, and particularly discloses a boiler waste heat composite utilization system and method.The system comprises a boiler and a sulfur removal tower, and the boiler is connected with the sulfur removal tower; the boiler flue gas desulfurization system is used for carrying out flue gas desulfurization on boiler flue gas and is connected with the desulfurization tower through a pipeline; the flue gas guide and drainage system is used for shunting desulfurized flue gas output by the boiler flue gas desulfurization system and respectively guiding and shunting the desulfurized flue gas to the air preheating system, the lignite drying system, the hot water network heating system and the condensed water heating system through four passages; the air preheating system is connected with the boiler; the flue gas guide drainage system synchronously controls the air preheating system and the lignite drying system; and the flue gas guide drainage system synchronously controls the hot water network heating system and the condensate water warming system. According to the invention, the flue gas waste heat discharged by the boiler can be effectively recovered and used for multiple purposes, so that the utilization efficiency of energy is remarkably improved, and the energy waste is reduced.

The invention provides a vehicle braking energy recovery control method and system. The method comprises the steps that the maximum recovery torque value corresponding to a wheel end system in a hybrid vehicle is calculated in real time; the sliding energy recovery torque and the driving motor power generation torque correspondingly generated in the operation process of the hybrid vehicle are calculated in real time, and the corresponding braking energy recovery available electric power is calculated in real time according to the maximum recovery torque value, the sliding energy recovery torque and the driving motor power generation torque; calculating an electric braking recovery maximum capacity limit and a generator maximum power generation capacity limit corresponding to the hybrid vehicle in real time based on a preset rule; and according to the electric braking recovery maximum capacity limit and the generator maximum power generation capacity limit, braking energy recovery request torque and generator request torque calculated corresponding to the hybrid vehicle are limited so as to complete corresponding braking energy recovery control. The problem of over-charging or over-discharging of the brake recovery battery pack can be solved, the brake recovery efficiency can be improved, the energy consumption of the whole vehicle is reduced, the endurance mileage of the whole vehicle is increased, and the user experience is correspondingly improved.

The invention discloses a power generation device capable of adjusting the windward area of fan blades. The power generation device comprises a supporting mechanism, an impeller power generation mechanism, a fan blade windward direction changing mechanism and an intelligent control system. According to the power generation device, the fan blade windward turning mechanism is arranged on the inner side of the front section of the fan blade, on one hand, the diameter of the fan blade can be infinitely large, on the other hand, the manufacturing difficulty of the fan blade turning track is reduced, and transportation and installation are facilitated; the fan blade windward turning rails can rotate relatively and are provided with telescopic components capable of enabling the fan blade windward turning rails to move up and down, so that the directions of the fan blades are changed, the windward area is changed, the generating capacity of the whole device is reduced, on one hand, damage caused by overload of the generator is prevented, and on the other hand, damage to the whole device due to large windward stress of the fan blades is avoided. The stability is improved; in addition, an existing large-size driving gear structure is changed through a power generation rotating shaft and a multi-stage gear, the machining process and installation and transportation difficulty of the whole device are greatly reduced, and the requirement that the fan blades can be infinitely large is further met.

The invention relates to the technical field of mechanical engineering, in particular to a hybrid power generator set manufacturing method which at least comprises the following steps: S1, starting a motor to decelerate and increase torque; s2, superposing the power of the disc generator, and reducing the torque of the magnetic suspension bearing; s3, power devices of various power sources are manufactured; s4, the inertia wheel magnetic line cuts the coil to generate power. The power generation technology is innovated and improved, the torque of the starting motor is increased through speed reduction, and the power generation efficiency is improved by adopting a magnetic coupling and the like; a magnetic suspension bearing and the like are used for reducing resistance; the power of the disk generator is superposed to adapt to different scenes; application scenes and fields can be expanded through networking combination; a unique safety shell and an adjustable inertia wheel are further arranged, inertia potential energy of earth gravity is utilized, a permanent magnet rotating magnetic field is ingeniously used for cutting adjacent inductance coils to generate electric energy, so that energy consumption of a driving module system is counteracted, and low-energy-consumption power generation becomes reality through the manufacturing method of the hybrid power generator set.

The utility model discloses a cement kiln waste gas waste heat storage peak shaving system, which is characterized in that in the initial stage of heat storage, part of hot waste gas from a grate cooler enters a heat storage device for heat storage through a first branch gas path, and then is sent to a tail air inlet of a kiln head waste heat boiler through a fourth branch gas path; in the later stage of heat storage, hot waste gas in the heat storage device enters the air mixer through a second branch gas path to be mixed with hot waste gas of the main waste gas pipeline, and then enters a main flue gas inlet of the kiln head waste heat boiler; in the initial stage of heat release, low-temperature hot waste gas enters a heat storage device through a fifth branch gas path, enters an air mixer through left sections of a third branch gas path and a second branch gas path after absorbing heat, is mixed with hot waste gas of a main waste gas pipeline and then enters a main flue gas inlet of a kiln head waste heat boiler for heat exchange; and in the later stage of heat release, hot waste gas is sent to a tail air inlet of the kiln head waste heat boiler through the third branch gas path, the right section of the second branch gas path and the fourth branch gas path to enter the kiln head waste heat boiler. According to the system, the heat of hot waste gas from the grate cooler is stored through the heat storage device during valley electricity, the stored heat is released through the heat storage device during peak electricity, and the purpose of storing and releasing heat for peak regulation through waste heat of the waste gas is achieved.

The invention discloses a control method, device and equipment for an extended-range power system and a storage medium. The method comprises the following steps: when the sum of regenerative braking required power and generated power of a generator in the extended-range power system is greater than allowable charging power of a battery, reducing the generated power to a preset value; in the process of reducing the generated power, determining a target change rate according to actual engine parameters of an engine in the extended-range power system and a preset corresponding relation according to a preset period, and adjusting the rotating speed of the engine according to the target change rate until the rotating speed of the engine reaches an idle rotating speed, the preset corresponding relationship comprises a corresponding relationship between the engine parameter and the change rate when the engine NVH characteristic parameter is in a suitable interval. According to the invention, the generated power is reduced, so that feedback braking can be realized, and higher power can be distributed, thereby ensuring the braking performance; and in the process of reducing the generated power, it is guaranteed that the NVH characteristic parameters of the engine are within a proper interval, galloping of the engine is avoided, and the riding experience is improved.