144 results about "Heating season" patented technology

The invention provides a cross-seasonal heat storage coupling solar ground source heat pump combined heating system. The cross-seasonal heat storage coupling solar ground source heat pump combined heating system mainly comprises a solar heat collector, a valve, a heat storage water tank, a heating tail end, a buried phase change heat storage water tank, a buried pipe and a heat pump. Solar radiation heat in non-heating seasons is collected and stored through cross-seasonal heat storage, and the stored heat is extracted in the heating period in winter and is used for heating a building together with a solar ground source heat pump combined heating system. The system has the beneficial effects that the system efficiency is improved, and the use of thermal insulation materials is reduced, so that the cost is reduced; the buried pipe absorbs and inhibits heat diffusion of the heat storage water tank, heat balance of a soil temperature field around the buried phase change heat storage water tank is guaranteed, and efficient operation of a heat pump unit is maintained. The invention has six control methods: solar energy-soil heat storage, solar energy direct heating, solar energy coupling buried phase change heat storage water tank heating, buried phase change heat storage water tank direct heating, solar energy ground source heat pump combined heating and ground source heat pump independent heating.

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 provides a method for configuring a community high-quality life system in a high-altitude region by fusing electric heating and multi-fuel ataxia, which comprises the following steps of: 1, determining the function and load requirements of the community high-quality life system in the high-altitude region, and determining the daily variation of basic parameters; the low-cost biomass heat supply amount in the local heating season is determined, and basic data are obtained; and 2, configuring and analyzing the requirements of the high-quality living system of the community in the high-altitude area according to the basic data. Photovoltaic power generation in the non-heating season and energy storage of the chemical energy storage battery are used for supplying power to the load, hydrogen is produced and stored at the same time, power is supplied by the fuel cell in the heating season, and the problem of cross-seasonal power utilization requirements is solved. In the heating season, photovoltaic power generation solves the heat supply problem through cooperation of photovoltaic power generation heating, sensible heat storage and biomass.

The utility model relates to the technical field of solar greenhouse energy conservation, in particular to a solar long-term soil-hydrated salt heat storage and supply solar greenhouse system which comprises a greenhouse, a solar heat collection circulating unit, a soil-hydrated salt heat storage and supply unit and an automatic control unit. According to the system, solar heat collection and soil-hydrated salt composite heat storage and supply technologies are innovatively combined, and seasonal effective storage and utilization of solar energy are achieved. In the non-heating season with rich solar energy, the system efficiently collects solar energy through the heat collector and converts the solar energy into heat energy, and then heat energy is stored through the soil-hydrated salt mixed material and the high heat storage performance and excellent heat stability of soil. In the heating season, the stored heat energy is released to the greenhouse, and a stable heat source is provided for crop growth. The system has the advantages of being high in energy efficiency, environmentally friendly, sustainable and the like, is suitable for sunlight greenhouses under various weather conditions, and has important significance in promoting green agriculture and renewable energy source application.

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 compressed air energy storage, and discloses a cross-seasonal heat storage compressed air heat and power cogeneration system and an operation method thereof. The compressed air heat and power cogeneration system comprises a compression subsystem and an expansion subsystem. A compression assembly in the compression subsystem generates compressed air, the compressed air is cooled through a heat exchange assembly, a cross-season heat storage device exchanges heat with the compressed air in a heat exchanger to extract and store heat energy, and the cooled compressed air is stored in a compressed air storage device. The expansion subsystem firstly heats compressed air of the compressed air storage device through a heat exchanger and then conveys the compressed air to an expansion assembly for power generation. In the non-heating season, the cross-seasonal heat storage device can store heat energy and supply the heat energy to the heat supply assembly in the heating season, cross-seasonal utilization of the heat energy is achieved, the heat energy utilization efficiency is high, the heat energy is continuously generated and consumed when the system operates, and the cross-seasonal heat storage device, the compression assembly and the heat supply assembly share the heat exchanger; the occupied area of equipment and the cost are reduced.

The utility model discloses a heating system utilizing compressed air energy storage compression thermal coupling ground source heat pump, which belongs to the technical field of compressed air energy storage, and comprises a compressed air energy storage system and a ground source heat pump system, the water side of the steam-water cooler in each compressed air energy storage compression unit is connected with the cooling tower through a cooling water circulation pipeline, and the ground source heat pump system is connected with the cooling water circulation pipeline. According to the compressed air energy storage system, compression heat in the compressed air energy storage process can be stored in the soil in the non-heating season through comprehensive utilization of equipment such as the ground heat exchanger and the ground source heat pump unit arranged in the compressed air energy storage system and pipelines, the cross-seasonal heat storage mode is adopted, the ground source heat pump system is combined, and the energy storage efficiency is improved. The utilization efficiency of waste heat and the energy efficiency of the whole compressed air energy storage system are improved while heating is achieved.

The invention discloses a heating season city gas system load prediction method and system, and relates to the technical field of gas system load prediction, and the method comprises the following steps: collecting the related original data of a heating season city gas system, the original data comprises historical data and real-time data, and carrying out the preprocessing of the collected original data, and obtaining a gas load analysis set and a demand variable of gas load analysis. According to the method, the gas consumption, the meteorological data, the demographic data and the gas price data are comprehensively analyzed, the gas load prediction model is constructed, the accuracy of gas load prediction is remarkably improved, and by analyzing historical extreme weather events, calculating the extreme weather influence index and evaluating possible risks, the gas load prediction accuracy is improved. And the risk level is quantified by combining the gas load evaluation index and the risk early warning coefficient, the early warning level is dynamically adjusted according to real-time data, prevention measures are taken in time, and the influence of extreme weather events on gas supply is reduced.

The invention discloses a multi-source coupling middle-deep layer ground source heat pump system which comprises a heat pump unit, a user unit, a constant-pressure water supplementing unit, a middle-deep layer ground source unit, a heat exchange unit and an energy storage unit. The middle-deep layer ground source unit comprises a buried pipe buried in a middle-deep layer stratum, a ground source side water supply pipeline connected with the buried pipe, a ground source side water return pipeline and a ground source side circulating pump set. The energy storage unit comprises a solar heat collection unit, a solar water supply pipe and a solar water return pipe, the solar water supply pipe is connected with the ground source side water return pipeline, and the solar water return pipe is connected with the ground source side water supply pipeline. Solar energy, a middle-deep layer ground source heat pump and an air source heat pump are coupled together, multiple renewable energy sources are combined to achieve heating and cooling, cross-season heat storage can be conducted in a ground source, enough heat is provided for the heating season, then the heat taking requirement of the heating season is met, and the heating energy efficiency is improved; in summer, the air source heat pump unit can be used for cooling, so that a traditional medium-deep layer ground source heat pump system has a cooling function.

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 present invention discloses an energy storage geothermal heating system for absorbing intermittent energy, including a heat storage device, a peak-shaving plate heat exchanger, a heating plate heat exchanger, a heat-releasing plate heat exchanger, a geothermal water circulation pump, a heating hot water circulation pump and a heat-releasing circulation pump; the heat storage device converts intermittent energy into thermal energy and stores it in its thermal storage material; in the heating season, the heat in the thermal storage material is released into the heating hot water network through the heat-releasing circulation pump and the peak-shaving plate heat exchanger to provide peak-shaving thermal energy for the building; in the non-heating season, the heat in the thermal storage material is released into the geothermal water and stored in the geothermal storage through the heat-releasing circulation pump and the heat-releasing plate heat exchanger. The present invention solves the "source-load" coupling problem between intermittent energy and the building heating system, such as the storage of unstable intermittent energy across seasons, matching with the stable heat source demand for building heating, cascade utilization of heating, peak-shaving of the heating network, and is suitable for various building heating systems with certain geothermal water resources.

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 invention provides a steam turbine generator system arranged at a high position and a low position, which at least comprises a high-position shaft system arranged at an elevation position close to an inlet header and an outlet header of a superheater and a reheater, a high-pressure cylinder, an intermediate-pressure cylinder, a generator, a low-pressure cylinder, a generator and a condenser, wherein the low-pressure cylinder, the generator and the condenser are arranged on a low-position shaft system; the communicating pipe is connected with the steam exhaust end of a medium-pressure cylinder and the steam inlet end of a low-pressure cylinder on the high-position shaft system, the valve is arranged at the steam inlet end of the low-pressure cylinder, and further, the communicating pipe in front of the steam inlet valve of the low-pressure cylinder enters a heating heat exchange station through a heating valve and a pipeline. By adjusting the heat supply valve and the low-pressure cylinder steam inlet valve, more flexible heat supply steam use adjustment can be realized. By means of the low-pressure cylinder steam inlet valve, steam entering the low-pressure cylinder can be adjusted according to specific seasons and loads, so that commissioning and removing functions of the low-pressure cylinder and a low-position shaft system and adjustment of the steam inlet amount and heating steam pressure maintaining in the heating season are achieved, then the optimal all-season and full-load operation working condition is achieved, and the purposes of saving energy and reducing consumption are achieved.

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 relates to the technical field of heat supply, and discloses a heat supply system based on low-temperature phase change material heat storage and a working method thereof, a low-temperature phase change material stores heat through latent heat, the heat storage density is far higher than that of hot water heat storage, and the needed space is smaller. Peak clipping and valley filling are conducted on heat supply through the low-temperature phase change heat storage device, redundant heat supply in the peak stage is transferred to the peak regulation stage to supplement the heat supply capacity, and therefore thermoelectric decoupling of a thermal power plant is achieved, the deep regulation capacity of a unit is improved, new energy consumption is increased, and centralized heat supply safety in the heat supply season is guaranteed. The heat exchange station is transformed, the low-temperature phase change heat storage device is additionally arranged, the transformation range and investment are small, and a heat source is one-network water supply and does not consume other energy sources. And compared with the current partial heat exchange stations additionally provided with the fused salt storage tanks, the operation cost and the carbon emission can be greatly reduced, and the operation energy efficiency of the heat supply system is improved.

The invention relates to a cross-seasonal heat storage and supply peak shaving system and method coupled with thermoelectric unit waste heat recovery, a cross-seasonal heat storage mechanism is arranged, an underground heat storage device and a first heat exchange device are utilized, an absorption heat pump can be started in a non-heating season, waste heat is stored in the underground heat storage device, the situation that the idle capacity of the absorption heat pump is too high, and the heat exchange efficiency is high is avoided. Meanwhile, the problem that the peak regulation capacity of the cogeneration unit in the non-heating season is insufficient, especially the load reduction and peak regulation capacity of the unit is insufficient is solved; in the heating season and when the combined heat and power generation unit operates in a peak regulation mode, the heat supply system can serve as a supplementary heat source to conduct secondary heating on heat supply network water or serve as low-temperature water supplement of the absorption heat pump so as to make up the external heat supply gap generated by the combined heat and power generation unit in the peak regulation mode in order to meet the requirement for flexible adjustment of the electrical load.

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.