110 results about "Heating season" patented technology

The invention discloses a planning design and optimized operation method for a heat supply system introducing a long-distance heat source, which comprises the following steps: acquiring basic data of the long-distance heat source to be introduced into the heat supply system in a heating season, and analyzing the operation mode change and dynamic characteristic change of a heat supply network of the existing heat supply system after the long-distance heat source is introduced; performing quantitative analysis and comparison on the plurality of heat supply network planning and design schemes in combination with external heat supply industry evolution data in a heat supply season to obtain an optimal heat supply network planning and design scheme; spatial characteristic data and time characteristic data related to the heat supply system are obtained, a space-time model of the heat supply system is established, and heat load prediction of each heat supply network area is carried out in combination with the heat load multi-dimensional influence data; and according to the heat load prediction value of each heat supply network area, combining the multi-dimensional heat supply loss, the heat source output characteristic and the heat supply network heat transmission and distribution characteristic of the long-distance heat source and the traditional heat source, and considering a heat source optimization operation target and a heat supply network regulation and control target, establishing a multi-time scale optimization operation model, and obtaining a corresponding optimization operation strategy.

The invention discloses a heat supply system and method for a water source heat pump coupled seasonal water pool synergistic municipal heat supply network. In the system, a solar heat collector is connected with a seasonal heat storage water pool through a pipeline via a heat exchanger; the seasonal heat storage water tank and the municipal heat supply network are connected with a heat consumer through a pipeline via a heat exchanger; and the water source heat pump is connected with the seasonal heat storage water tank and the heat consumers through pipelines. According to the system, a multi-source complementary framework with solar energy as a main source, heat pump synergism and municipal administration as a bottom is constructed. In the heat supply season, the system adopts a temperature difference lag control strategy, according to seasonal temperature changes of the heat storage pool, a direct heat supply mode, a water source heat pump coupling heat storage pool heat supply mode and a municipal heat supply network heat compensation mode are automatically switched, and stable transition from high-temperature direct heat supply to low-temperature water pump auxiliary heat supply and then to municipal heat supply network bottom heat supply is achieved. It is guaranteed that the building can obtain continuous and stable heat supply all the time in the heat supply season, and meanwhile, clean energy is utilized in a larger range, and heat supply quality is accurately controlled.

The invention discloses a heat supply system for mine building heat supply and shaft freezing prevention, comprising: a heat collection module for collecting heat by using solar energy; the heat storage module exchanges heat with the heat collection module, is used for storing the heat source transferred by the heat collection module and can transfer the heat source to a heat terminal for the mining area building for heating around the clock; the power supply module is used for generating power by using solar energy and storing electric energy; and the wellhead heating modules are arranged at the shaft positions of the main inclined shaft and the auxiliary inclined shaft, and heat exchange is conducted between the wellhead heating modules and the heat storage module. The water source heat pump is used for heating the main inclined shaft and the auxiliary inclined shaft, comprehensive utilization of energy is achieved, a photovoltaic renewable power source is built in combination with the mining area space to provide clean power for mining area heat supply and power utilization systems such as the water source heat pump, and when the mining area power load and the heating load are low in the non-heating season, the water source heat pump can be used for heating the heat storage system. Zero-carbon heat supply for mine area building heat supply and shaft freezing prevention is achieved.

The utility model relates to the technical field of energy conservation and environmental protection, in particular to a solar cross-quarter energy storage and soil source heat pump coupling heating system. The system comprises a solar photo-thermal photovoltaic integrated subsystem, a soil source heat pump coupling heat storage system and a heat user terminal system, the solar photo-thermal photovoltaic integrated subsystem comprises a photo-thermal photovoltaic integrated assembly, a heat exchanger, a storage battery and a circulating pump, and the solar photo-thermal photovoltaic integrated subsystem is used for supplying power to electric equipment of the system and collecting heat; the soil source heat pump coupling heat storage system comprises a soil source heat pump unit, a plate heat exchanger and soil serving as a heat storage medium. And a terminal user maintains proper indoor temperature and required hot water through the heat exchanger. Solar energy and geothermal energy are combined, abundant solar energy is converted into heat energy to be stored in soil in the non-heating season, then the heat energy is taken out through the ground source heat pump for heating in the heating season, renewable energy sources are fully utilized, and the current situation that cold and heat loads are uneven due to long-term operation of the soil is effectively prevented; finally, the purposes of high efficiency, energy conservation and emission reduction are achieved.

The invention relates to the technical field of peak regulation of cogeneration units, in particular to an economic benefit determination method and system based on combined peak regulation of an electric boiler. The method comprises the steps of determining a low-load period of current operation of the coal-fired unit, determining a peak regulation total income generated by the coal-fired unit in a non-heat-supply season period under the low-load period, determining a total reduction amount of electricity selling income of the coal-fired unit in the non-heat-supply season period under the low-load period, determining a high-load period of current operation of the coal-fired unit, and determining a total reduction amount of electricity selling income of the coal-fired unit in the non-heat-supply season period under the high-load period. And determining the annual income of the coal-fired unit according to the total coal-saving income of the coal-fired unit in the non-heat-supply season period and the total peak regulation income, the total reduction of the electricity selling income and the total coal-saving income. According to the method, the space-time transfer of the electric quantity is realized through low storage and high discharge of the electric quantity, and the peak regulation income maximization of the transformation scheme of the electric boiler peak regulation system in operation in the non-heating season is ensured by determining the annual income of the coal-fired unit.

The invention provides a heat pump system and a control method and device thereof. The heat pump system comprises a high-pressure-stage compressor, a low-pressure-stage compressor, an air side heat exchanger, a first throttling valve and a water side heat exchanger which are connected through a refrigerant main path. A first branch connected with the refrigerant main path in parallel is arranged between the water side heat exchanger and the first economizer, and the first branch flows through the first economizer and communicates with an air suction port of the high-pressure-stage compressor. A second branch which is connected with the refrigerant main path in parallel is arranged between the first economizer and the second economizer; the second branch flows through the second economizer and is communicated to an air supply port of the low-pressure-stage compressor; the first branch is provided with a second throttle valve, and the second branch is provided with a third throttle valve. The problem of insufficient heating capacity during low-environment operation can be well solved, the user experience is improved, meanwhile, the four operation modes can well accord with the operation working conditions of the whole heating season, and high-energy-efficiency operation of the whole heating season is achieved.

This invention discloses a PVT (Polyvoltine Transformer) soil source heat pump centralized heating system, relating to the field of integrated utilization of solar photovoltaic and solar thermal energy. It includes PVT modules and a photovoltaic inverter for converting the direct current (DC) generated by the PVT modules into alternating current (AC) for use by electrical equipment within the system or for grid connection. In this PVT soil source heat pump centralized heating system, the temperature of the solar panels in the PVT modules decreases during operation, improving their power generation efficiency. During the winter heating season, the soil source water temperature can be increased during certain periods, reducing the operating costs of the soil source heat pump unit. In the non-heating season, supplemental heating is provided to the soil side to achieve a thermal balance, thereby enabling the soil source heat pump unit to maintain high-efficiency operation during the heating season. This solves the problems existing in traditional soil source heat pump centralized heating systems and has advantages such as high efficiency, energy saving, and sustainability.

The invention discloses a solar light-heat / cold conversion and cross-season energy storage system suitable for abandoned mine transformation. The system comprises a water supply module, an energy supply module, an energy conversion module, a quality inspection and strengthening module, an energy storage module and a control module. The water supply module provides initial and supplementary water; the energy supply module collects energy for conversion and supplies energy to each module; the transduction module utilizes the energy processing multi-module to convey water and sends outlet temperature data to the control module. The quality inspection and enhancement module sends water temperature data and receives an instruction to execute operation; the energy storage module is used for storing water, collecting water temperature data at regular time and receiving post-processing instruction operation; the control module analyzes the temperature data of the transduction module and sends an instruction to the control system. The system solves the problems of mine treatment and facility idling in non-heating seasons, has cross-seasonal heat and cold storage capacity, realizes seasonal-scale energy supply and demand mismatch adjustment, energy space-time translation and all-season efficient utilization, and improves the system utilization rate and the rate of return on investment.

The present application relates to a kind of bypass adaptive configuration carbon dioxide heat pump heating system and control method, wherein the bypass adaptive configuration carbon dioxide heat pump heating system of multiple includes carbon dioxide sub-cycle, refrigerant sub-cycle and water supply flow path connected with each other heat exchange;Carbon dioxide sub-cycle includes main carbon dioxide loop and regenerator bypass;Main carbon dioxide loop includes sequentially connected carbon dioxide compressor, carbon dioxide-water heat exchanger I, carbon dioxide-water heat exchanger II, carbon dioxide-refrigerant heat exchanger, carbon dioxide throttling valve I, carbon dioxide evaporator;Water supply flow path is connected with the main carbon dioxide loop by carbon dioxide-water heat exchanger I and carbon dioxide-water heat exchanger II heat exchange connection.Compared with prior art, while realizing the efficient operation of system full heating season, the present application can adaptively match different end conditions, while having more efficient and stable defrosting effect and more reliable compressor safety guarantee.

A solar energy auxiliary combined heat and power system and operation method, the system comprises a boiler, a high, medium and low pressure cylinder of a steam turbine, a condenser, a heat recovery system connected in sequence; further comprising a trough type solar heat collection system, a high and low temperature heat storage tank, an oil-water heat exchanger, a peak heater, a waste heat heater, an auxiliary heater, an absorption heat pump and various valves. During the daytime power peak and heat valley period, the solar energy drives the absorption heat pump and the peak heater, recovers the steam turbine exhaust and the waste heat of the heat network return water, under the premise of meeting the heat supply load, auxiliary improves the steam turbine power output; the excess solar heat is stored through the high temperature tank. During the night power valley and heat peak period, the high temperature tank releases heat to drive the absorption heat pump and the peak heater to recover the steam turbine exhaust and the waste heat of the heat network return water, which is used for heat supply of the heat network. The present application realizes the pure condensing condition operation of the combined heat and power unit in the heating season, and greatly improves the power output of the unit in the power peak period, and the peak regulation capacity is obviously improved.

The invention provides a sustainable heat supply and defrosting method and system for coupling a PV / T heat pump with an air source heat pump, belongs to the technical field of heat supply systems, and can solve the problems that an existing air source heat pump is unavoidable in frosting, and the air source heat pump needs to stop indoor heat supply and even absorb part of indoor heat to reduce the indoor heat supply temperature under the defrosting working condition. The method comprises the steps that an illumination condition and an environment temperature condition are judged, a corresponding heating and defrosting mode is selected based on the illumination condition and the environment temperature condition, and the heating and defrosting mode comprises an air source compensation type PV / T heat pump synchronous heating and defrosting mode and a PV / T compensation type air source heat pump synchronous heating and defrosting mode. According to the sustainable heat supply and defrosting method coupled with the PV / T heat pump and the air source heat pump, sustainable heat supply in the defrosting process of the air source heat pump is achieved, the wide-temperature-zone operation range of the air source heat pump and the PV / T heat pump is widened, a heat pump unit can operate efficiently, and the heating season energy efficiency coefficient of the unit is increased.

The invention relates to the technical field of heat supply systems, and provides a centralized heat supply system and a control method thereof.The centralized heat supply system comprises a centralized heat supply module and an energy module, and the energy module comprises an air heat exchange unit, a heat storage unit, a heat pump unit, a water dividing and collecting unit, a control valve set, a green power unit and a power distribution unit; the water dividing and collecting unit is connected with the air heat exchange unit, the heat storage unit and the heat pump unit and controls connection and disconnection between any two of the air heat exchange unit, the heat storage unit and the heat pump unit, the control valve set is connected with the heat pump unit, the heat storage unit and a primary network of the centralized heating module and controls connection and disconnection between any two of the heat pump unit, the heat storage unit and the centralized heating module, and a wire of the power distribution unit is connected with the green power unit and a municipal power grid. The power distribution unit supplies power to electric components of the energy module. Therefore, the central heating system can operate in the heating mode to supplement heat to the primary network and meet the heat utilization requirement of the secondary network, and can operate the heat storage mode by using the electric power generated by the green power unit in the non-heating season to realize cross-season heat storage so as to efficiently absorb renewable electric power.

The invention relates to the technical field of heat supply, in particular to a heat supply quantity prediction method based on heating day number, which comprises the following steps: S1, calculating the daily heating day number S of a historical heating season; s2, calculating unit consumption C of a pipe network once every day in a historical heating season; s3, calculating the daily heat consumption Y of a primary pipe network in a historical heating season; s4, obtaining ideal heat consumption Y1 of the number of days of the primary pipe network; s5, the heating day number S1 of the next heating day in the heating season is calculated; s6, the heat supply area A1 of the heating season and the heat supply time t1 of the next heat supply day of the heating season are counted; s7, the heat supply amount Q1 of the next heating day in the heating season is predicted and calculated; s8, heating is conducted according to the heat supply amount Q1, obtained through prediction and calculation, of the next heating day of the current heating season; according to the heat supply quantity prediction method based on the heating degree day number, the heat supply quantity is accurately adjusted, so that the indoor temperature is always kept at a proper temperature, and the heat supply cost of an enterprise is conveniently reduced on the basis of ensuring stable heat supply.

The utility model relates to a solar heat storage coupling split heat pipe and a mine air inlet heating system, and belongs to the technical field of solar heat storage mine heat supply. The solar heat storage coupling split heat pipe is a heat storage type heat exchanger, can be buried in soil, is used in cooperation with a solar heat collector, and stores absorbed solar radiation energy in surrounding soil in a dividing wall heat exchange mode under the working condition of a non-heating season, so that a heat source guarantee is provided for subsequent heat supply. The mine air inlet heating system can be matched with the solar heat storage coupling split heat pipe, energy waste caused by high-temperature air supply is greatly reduced while reasonable allocation of heat energy is achieved, and the overall heat efficiency of the system is remarkably improved; the problems that according to an existing mine heat supply system, it is difficult to meet the mine air inlet heat supply working conditions that the distance between an air inlet shaft and an industrial square is long, a mine area lacks recyclable heat energy as a heat source support, the power distribution capacity is insufficient, and a coal heat supply mode is not suitable are solved.

The application provides a ground source heat pump system and a control method thereof. Annual historical operation data of the ground source heat pump system are acquired, and the annual historical operation data include cooling season parameters and heating season parameters. A first predicted heat and a predicted heat discharge are calculated according to the cooling season parameters, wherein the sum of the first predicted heat and the predicted heat discharge is equal to a preset heat value. A second predicted heat is calculated according to the heating season parameters. The predicted heat discharge is adjusted so as to make the first predicted heat consistent with the second predicted heat. The technical scheme of the application collects the annual historical operation data of the ground source heat pump system, and combines meteorological characteristics to predict soil heat release and soil heat absorption. The first predicted heat and the second predicted heat of the prediction result are compared to realize accurate control of soil heat balance. When the prediction is inconsistent, the prediction result is adjusted and intervened in time to realize full use of soil constant temperature characteristics of a heat exchange region and improve operation efficiency of the ground source heat pump system.

The utility model relates to the technical field of heating and hot water supply systems, in particular to a solar heating and hot water supply duplex system which comprises a heat source heat exchanger arranged between a solar photo-thermal system and a heat supply and storage system in a coupling mode. The tail end of the heating loop and the tail end of the hot water supply loop are connected with a multi-layer heating terminal and a multi-layer water using terminal correspondingly. The system can utilize solar energy to supply heat and hot water to the maximum extent, the utilization efficiency of energy is improved, and the heat utilization occasion is expanded. The requirements of different users are met, the comfort of the users is improved, and heat supply and hot water supply are more balanced and uniform. The heating station can run all year round, and the problem that the solar central heating station is idle in non-heating seasons is solved. Hot water is not in direct contact with a heating pipeline, and the used hot water meets the domestic water standard. Hot water use cost is lower than that of an electric water heater; and the floor area is small, and the device is suitable for most public buildings and residential buildings.

The application provides a heat pump air conditioning system and a defrosting control method thereof. The heat pump air conditioning system comprises a compressor assembly, a first heat exchanger, a second heat exchanger, a pump component, an indoor unit, a heat storage water tank and a branch pipeline. A throttling pipeline is connected between the first heat exchanger and a first medium channel. The heat storage water tank is arranged at a pipeline evaporation section of the throttling pipeline and located at an upstream side of a throttling component. The first medium channel is respectively connected with a first medium inlet pipe and a first medium outlet pipe at two ends. An upstream end of the throttling pipeline is connected with a downstream end of the first medium outlet pipe, and a downstream end of the throttling pipeline is connected with the first heat exchanger. The branch pipeline is respectively connected with the upstream end of the throttling pipeline and the first medium inlet pipe at two ends. In a heating mode, the branch pipeline is cut off, and the first medium inlet pipe and the first medium outlet pipe are both conducted. In a defrosting mode, the branch pipeline is conducted, and the first medium inlet pipe and the first medium outlet pipe are both cut off. The air conditioning system solves the problem of large indoor temperature fluctuation during defrosting in the heating season.

The application discloses a kind of table area electric heating load identification method and system, belong to power grid data analysis and intelligent identification technical field.The method includes: obtaining the historical load of to-be-identified table area, time and multi-dimensional time series data such as meteorology by data acquisition module;Utilize a deep learning model comprising time series feature extraction module and key feature weighting module to process data to generate preliminary classification results;Based on the business rules of the growth of heating season electricity consumption and the stability of non-heating season electricity consumption, the historical load is compared and verified across years;The preliminary classification result of model is combined with the verification result of rule, and whether table area is electric heating load is comprehensively judged.This application combines the pattern recognition ability of deep learning with the deterministic logic of business rules, realizes the high-precision, high-robustness automatic identification of electric heating load, and provides an effective technical means for power grid intelligent management.

The invention discloses a combined heat and power generation coupled geothermal energy cross-seasonal energy utilization system and method, and belongs to the technical field of comprehensive utilization of energy, the combined heat and power generation coupled geothermal energy cross-seasonal energy utilization system comprises a combined heat and power generation power plant used for generating power and generating waste heat in a non-heating season, and the combined heat and power generation power plant is connected with a first geothermal well and a second geothermal well through a geothermal heat exchange station; meanwhile, the first geothermal well and the second geothermal well are connected with a town heat exchange station through a geothermal heat exchange station, and the town heat exchange station supplies heat to town users. According to the method, the generator set generates power and surfs the internet in the non-heating season, the power generation income is obtained, the annual operation time of the back pressure unit is prolonged to 10-12 months from less than or equal to 6 months, and the annual energy output is increased by 40%; meanwhile, the combined heat and power generation unit can be coupled to achieve gradient utilization of heat energy or participate in peak regulation, idle backpressure turbine resources are effectively utilized, coal consumption is reduced, clean heat supply is achieved, and energy conservation and emission reduction and regional clean low-carbon development are promoted.

The invention provides a heat supply period extraction condensing unit high back pressure optimization control system and method, and the system comprises an agent modeling implementation module which is used for building a multi-agent model of a boiler, a steam turbine, a condenser and a heat supply network, achieves the real-time data exchange through a dynamic coupling interface, and is used for carrying out the real-time data exchange through a partitioning strong coupling method, the inter-field flux transfer accuracy is ensured; the three-stage closed-loop parameter calibration module is used for establishing a complete parameter calibration assembly line; the physical information deep learning module is used for combining a neural differential equation with physical constraints to determine a mechanism enhanced model; the third-level toughness control module is used for performing safety protection control according to the working state of the extraction condensing unit; and the full-link intelligent collaborative optimization module is used for extracting multi-source data related to the condensing unit and performing collaborative control on each module of the condensing unit. At least five innovative modules can be systematically integrated, so that intelligent optimization control of the back pressure of the extraction condensing unit is realized.

The invention relates to an intelligent decomposition and optimization method for an annual power generation plan of a power plant, belongs to the technical field of power plan scheduling, and solves the problems of low granularity and low evaluation dimension of an existing power plan scheduling model. The method comprises the following steps: dividing a target year into a plurality of basic optimization time periods based on the operation mode difference between a heat supply season and a non-heat supply season; taking the minimum annual total gas consumption predicted by the generalized additive model as an optimization target, and coupling a smooth penalty term to construct a basic optimization target function; generating a feasible operation interval of each basic optimization period; generating a plurality of feasible initial solutions in the feasible operation interval, performing iterative solution on each feasible initial solution by adopting a constraint optimization algorithm to obtain an optimal solution, and selecting a solution with the lowest basic optimization objective function value from all the optimal solutions as a final optimal solution; integer correction is carried out on the power generation amount and the heat supply amount in the final optimal solution, and a prediction interval of the gas consumption amount is generated based on the corrected power generation amount and heat supply amount.

This invention discloses a power plant energy storage and peak-shaving device based on a hygroscopic solution, belonging to the technical field of power energy-saving equipment. The device includes a circulating liquid storage tank for storing the hygroscopic solution, connected to a heating water heat exchanger to continuously heat the heating water main pipe; and an electric boiler connected to the circulating liquid storage tank, which heats the heating water main pipe via a condenser. By setting different modes, the absorption unit, electric boiler concentration unit, and compressor concentration unit can be activated under different conditions. During the heating season, when it is necessary to increase the power output to the outside of the plant, only the absorption unit needs to be activated; during the heating season, when it is necessary to significantly reduce the power output to the outside of the plant, the absorption unit, electric boiler concentration unit, and compressor concentration unit all need to be activated simultaneously. By activating different devices at different times, the utilization rate of the device is maximized while minimizing energy consumption.

The invention relates to the technical field of geothermal heating, in particular to a geothermal heating and power generation combined system which comprises a geothermal heating end. A heating user and a generator set end; the heating and power generation combined unit is used for providing a small flow of heating medium water in a non-heating season and a large flow of heating medium water in a heating season to meet heat energy required by a generator set and heating users, and the pressure and the temperature in a heating pipeline are stable during heating, so that normal heating is realized; the heating and power generation combined unit comprises a plurality of heat exchangers connected in series, an intelligent adjusting valve and a temperature balance adjusting unit. The input ends of the heat exchangers connected in series are connected with a geothermal heat supply end, the output ends of the heat exchangers connected in series are connected with a heating user and a generator set end through a heat supply pipeline and a pump, and the heat supply pipeline is provided with an intelligent adjusting valve, a flow meter and a pressure transmitter. The requirements for small flow of the heating medium water in the non-heating season and large flow of the heating medium water in the heating season are met, and meanwhile, the pressure and the temperature in the heating pipeline are stable during heating, so that normal heating is achieved.

The invention provides a cross-seasonal heat storage and terrestrial heat coupling heat supply system based on wind and light absorption and a control method, the system comprises a terrestrial heat supply subsystem, a wind and light absorption power supply subsystem and a cross-seasonal heat storage and supply subsystem, and the terrestrial heat supply subsystem is used for extracting heat in terrestrial heat and supplying heat to heat users in the heating season; the wind and light absorption power supply subsystem is used for supplying power to electric equipment of the system by utilizing wind-abandoning and light-abandoning electric power; and the cross-seasonal heat storage and supply subsystem is used for converting the electric energy of the wind and light absorbed electric power into heat energy and storing the heat energy in a cross-seasonal heat storage water tank, and the cross-seasonal heat storage water tank is connected with the first heat exchanger and the heat pump to supply heat to heat users in the heat supply season. According to the system, abandoned wind and abandoned light energy is reasonably utilized in a cross-seasonal heat storage means, renewable energy sources of all parts are efficiently utilized by coupling a geothermal energy heat supply system, multi-heat-source heat supply serves as a guarantee, the stability of the heat supply system is improved, and pollution caused by traditional fossil energy heat supply is greatly reduced.

The invention relates to the technical field of peak regulation of cogeneration units, in particular to a capacity determination method and system based on combined peak regulation of electric boilers. The capacity determination method comprises the steps that a combined peak regulation simulation model is established, a first heat exchange parameter of condensed water entering a heat exchanger in a coal-fired unit in a non-heat-supply-season high-electricity-price period is obtained, and a second heat exchange parameter of condensed water entering a heat exchanger in the non-heat-supply-season high-electricity-price period is obtained according to the outlet water temperature of an electric boiler in a non-heat-supply-season low-electricity-price period. According to the first heat exchange parameter and the second heat exchange parameter, the capacity of the heat exchanger is calculated according to the first heat exchange parameter and the second heat exchange parameter, the duration of the high electricity price period in the non-heat-supply season is obtained, and the capacity of the heat storage water tank is calculated according to the duration of the high electricity price period and the capacity of the heat exchanger. According to the method, the defects of system redundancy, energy efficiency waste, low return on investment and the like caused by misalignment of capacity planning of an existing electric boiler combined peak regulation system are overcome by quantitatively matching equipment type selection and load requirements of a coal-fired unit.

The application discloses a flue gas waste heat-water recovery and pollutant emission reduction system and a regulation and control method, and belongs to the technical field of industrial waste heat recovery and automatic control. The system comprises a desulfurization tower, a slurry circulating subsystem, a flash tank, a heat pump unit and an intelligent regulation and control system. The method acquires historical operation data and pre-processes the same, constructs a double-layer coupled network prediction model of a Transformer-GRU, and outputs a water supply temperature prediction value. With temperature tracking precision and control amount change amplitude as targets, a control variable and a temperature safety constraint are introduced, and a spiral envelope element heuristic algorithm is used to solve the optimal driving steam regulating valve opening degree and slurry circulating pump rotating speed combination. The system can remove more than 40% of condensable particulate matters, and the SO3 removal efficiency is more than 92%. In the heating season, the waste heat recovery power is 36 MW, and 100,000 tons of condensate water is recovered. The method has high prediction precision and strong stability, and effectively overcomes the influence of the volume inertia of the flash tank and the multi-stage heat exchange lag of the heat pump.

The present invention discloses a method for planning the expansion of a distribution network containing hydrogen-heat storage in a high-proportion photovoltaic scenario. In order to effectively characterize the uncertainty of photovoltaic power generation and multi-load energy consumption, a two-layer coupled meteorological clustering model based on the division of heating seasons was established, and an irradiation-load-temperature multi-grid joint scenario generation model was constructed based on each meteorological cluster. In order to solve the problem of insufficient accuracy of traditional photovoltaic output models in high-proportion photovoltaic power generation scenarios and insufficient power demand in high PV output scenarios, which leads to difficulty in accommodating photovoltaic output, a refined distributed photovoltaic system physical model chain was constructed. Considering that the multi-energy coupling of distributed hydrogen-heat storage improves energy utilization efficiency, and balances the contradictions among the economic efficiency of the system's typical scenario operation, the power supply reliability of low-probability high-load scenarios, and the photovoltaic absorption of high PV output scenarios, the distribution network expansion planning results can well solve the economic, reliability and environmental protection problems brought about by high-proportion photovoltaic scenarios on the planning and operation of distribution networks.

The utility model discloses a solar-assisted double-storage-tank cross-season heating device which comprises a high-temperature heat storage tank which is connected with a solar heat collection field through a pipeline, a low-temperature heat storage tank is connected with an air heat exchanger through a pipeline, the high-temperature heat storage tank and the low-temperature heat storage tank are connected through a pipeline, and the high-temperature heat storage tank and the low-temperature heat storage tank are connected with a buried pipe heat exchanger through a pipeline after being converged. A high-temperature area of the water source heat pump unit is connected with a high-temperature heat storage tank pipeline, and a low-temperature area is connected with a low-temperature heat storage tank pipeline; water in the storage tank is used, influences on underground water resources are avoided, environment temperature is used for heat storage, the number of solar heat collectors is reduced, cost is reduced, a high-quality heat source extracted into the storage tank from soil is used for being lifted by the heat pump unit to become a high-temperature heat source to supply heat, the efficiency of a water source heat pump is improved, and power consumption is reduced. In the non-heating season, heat is stored from soil, heat balance of the soil is maintained, solar energy is stored in the non-heating season, solar energy is directly used for heating in the heating season, and the solar energy is utilized all year round.

The application discloses a combined heat and power system integrated with compressed air energy storage and an operation method thereof. The system comprises a boiler, high, medium and low pressure cylinders of a steam turbine, a condenser, a heat recovery system connected in sequence; and further comprises a steam ejector, a compressor set, a cooler set, an expander set, a heater set, an air storage chamber, a motor, a generator and various valves. In the energy storage stage in the heating season, the compressor set consumes electric energy and stores high-pressure air in the air storage chamber, and the multi-stage compression heat is used for assisting the heat supply of a heat network. In the energy release stage in the heating season, the air storage chamber releases high-pressure air and drives the generator to generate power in the expander set, and the water of the heat network is used as a multi-stage heating heat source required in the expansion process. Meanwhile, the backwater of the heat network is heated in stages, and the backwater is sequentially heated by using the extraction steam of the steam turbine to inject the exhaust steam of the low pressure cylinder of the steam turbine and the extraction steam of the third stage of the steam turbine as heat sources. The application realizes the efficient integration of the compressed air energy storage and the heat and power unit, and the energy efficiency level and the peak regulation capacity of the system are obviously improved.

The invention relates to the technical field of thermoelectric conversion energy storage, and discloses a thermoelectric complementary exchange energy storage system and method, and the system comprises a heat storage module, a fan module, a power generation module and a heat exchange module. Wherein the heat exchange module and the power generation module are connected in parallel, and a structure formed by connecting the heat exchange module and the power generation module in parallel is sequentially connected with the heat storage module and the fan module end to end; and the heat storage module and the power generation module are respectively connected with a power bus. The solid heat storage boilers in the energy storage system can sequentially store heat in different periods and can also simultaneously use electricity from the power bus to synchronously store heat, the solid heat storage boilers are suitable for valley electricity at night, and the solid heat storage boilers can be used for supplementing heat when the heat storage amount is insufficient in the daytime. The heat storage boiler is combined with the thermal prime motor to form the interchange complementary energy storage system, the independent heat supply function and the independent power generation function can be achieved, the system is used for distinguishing and adapting to the northern heat supply season and the non-heat supply season, and the system can achieve power generation and heat supply at the same time.