4881results about "Steam engine plants" patented technology

The invention provides a thermal power plant flexibility transformation and deep peak regulation optimization control method and system, and relates to the technical field of control engineering, and the method comprises the steps: collecting the omnibearing operation data of a thermal power plant to construct a multi-level thermal power plant dynamic nonlinear model, carrying out the real-time identification of model parameters, generating an identification result, and building a multi-dimensional thermal power plant operation characteristic database; based on the thermal power plant operation characteristic database, designing a transformation scheme, and performing visual simulation and optimization to obtain a flexible transformation result; constructing a multi-objective optimization function, formulating an adaptive deep peak regulation optimization control strategy, carrying out short-term and medium-term prediction on a power grid load, generating an initial control strategy based on a prediction result, carrying out online optimization and adjustment, and continuously evaluating and optimizing the control strategy.

The invention provides a steam extraction energy storage and fused salt heat storage method and system under power grid deep peak regulation, and relates to the technical field of power grids, and the method comprises the steps: determining a power grid deep peak regulation period according to power grid load prediction data and renewable energy power generation prediction data; steam extraction operation is conducted on the steam turbine based on model predictive control, and extracted steam is introduced into the multi-stage steam extraction energy storage device; the steam passing through the multi-stage steam extraction energy storage device is introduced into the heat exchanger and exchanges heat with the fused salt in the fused salt storage tank; in the power utilization peak period of the power grid, the multi-stage steam extraction energy storage device and the fused salt heat storage device are controlled to release heat energy; a steam extraction energy storage and fused salt heat storage collaborative optimization model is established, and the steam extraction amount, the energy storage and release time and the fused salt heat storage capacity are optimized and adjusted according to power grid load characteristics, renewable energy source output characteristics and system equipment parameters; and through the collaborative optimization model, multi-target balance of power grid deep peak regulation, renewable energy consumption and system economy is realized.

The invention relates to the technical field of steam turbine testing, in particular to a testing system for mismatch correction of a wide-load-interval thermal power generating unit speed regulation model, which comprises a thermodynamic system component, a speed regulation system device, a dynamic signal acquisition device and a control device, a dynamic signal processing module analyzes the relevance between main steam pressure sudden change and control valve opening oscillation in real time, a dynamic response database including a time sequence is constructed, and a control valve opening feed-forward compensation instruction and a combustor fuel distribution gradient adjustment signal are generated according to correction parameters. Power over-modulation wave crests caused by sudden load change are suppressed, and primary frequency modulation action delay is reduced; and the simulation verification module compares measured data with model output through an error feedback mechanism, dynamically adjusts high-pressure cylinder flow characteristic curve calibration parameters, optimizes a control strategy in combination with a network-related safety margin evaluation result, and realizes improvement of dynamic response precision in a full peak regulation interval and enhancement of power grid frequency stability.

The invention provides a one-key start-stop operation monitoring method and system for a gas-steam combined cycle unit, and relates to the technical field of equipment state monitoring, and the method comprises the steps: obtaining operation data, carrying out the data cleaning, noise reduction and standardization, and extracting the performance characteristics of the unit; constructing a component correlation model based on the spatial-temporal characteristics, and optimizing operation efficiency parameters; and performing fault diagnosis by using a multi-modal feature enhancement network, constructing a layered optimization control system, and performing control strategy optimization to obtain an optimal control strategy. According to the invention, intelligent monitoring, fault diagnosis and optimal control of the gas-steam combined cycle unit can be realized, the operation efficiency and reliability of the unit are improved, the fault risk is reduced, and the service life of equipment is prolonged.

The invention discloses a low-carbon flexible coal-fired unit power control system and method, and relates to the technical field of power systems, and the system comprises a cascade waste heat recovery module, a boiler deep regulation and control module, a thermal coordination module, an environmental protection and emission reduction module, an intelligent operation scheduling module and an energy efficiency monitoring module. The gradient waste heat recovery module carries out gradient recovery on flue gas heat energy according to temperature zone grades; the boiler depth regulation and control module is used for regulating combustion air supply and heat absorption paths to realize low-load stable combustion; the thermal coordination module dynamically distributes thermal loads between the multiple heat sources and the thermal units; the environmental protection and emission reduction module jointly controls desulfurization, denitration and wastewater resourceful treatment; the intelligent operation scheduling module generates a load regulation and control instruction and coordinates multi-module response; the energy efficiency monitoring module collects and analyzes energy consumption and emission indexes and assists strategy optimization. The energy efficiency utilization and emission control capability of the unit under the deep peak regulation condition is improved, and flexible, efficient and low-carbon operation is achieved.

The invention relates to the technical field of energy, in particular to a dynamic self-adaptive control method and system for a gas-steam combined cycle unit, and the method comprises the steps: constructing a multi-modal model library comprising a plurality of operation modes; operating parameters and environment parameters of the unit are collected in real time, and multi-source data fusion and system state evaluation are carried out; carrying out multi-time scale prediction on the load demand, fuel characteristics and environmental parameters of the unit based on a deep learning model; dynamically selecting model precision according to a prediction result, and implementing a multi-mode collaborative optimization decision to generate a control instruction; and executing the control instruction and monitoring an execution effect, and carrying out adaptive adjustment on model parameters and strategies according to feedback. According to the method, the unit can maintain efficient and stable operation under the scenes of power grid peak regulation, rapid load fluctuation, complex environment change and the like, meanwhile, pollutant emission is reduced, and the service life of key equipment is prolonged.

A turbine engine for an aircraft including a combustor, a turbine, and a steam system. The combustor generates combustion gases. The turbine receives the combustion gases and is drivingly coupled to a shaft. The steam system includes a boiler, a superheater, and a steam turbine. The boiler receives water and is fluidly connected to the combustor to receive a first portion of the combustion gases from the combustor and to boil the water to generate steam. The superheater is located downstream of the combustor to receive a second portion of the combustion gases from the combustor and to heat the steam. The steam turbine is fluidly coupled to the superheater to receive the steam from the superheater and to rotate the steam turbine. The steam turbine is drivingly coupled to the shaft.

The invention relates to the technical field of peak regulation of power generation systems, in particular to a multi-mode power generation system for a new energy large base and an operation method of the multi-mode power generation system. The multi-mode power generation system comprises a thermal power station and a fused salt energy storage power station. The thermal power station comprises a boiler, a first turbine, a first water return unit and a first generator; the fused salt energy storage power station comprises a high-temperature fused salt tank, a low-temperature fused salt tank, a fused salt heating unit, a steam-water heating unit, a second water return unit, a second steam turbine and a second generator; an air inlet of the fused salt heating unit is configured to obtain steam flowing out of the boiler, and a second discharging opening of the fused salt heating unit is connected with the first water return unit; an air outlet of the steam-water heating unit is connected with the first steam turbine and the second steam turbine. The first water return unit and the second water return unit are connected with a second feeding port of the steam-water heating unit. The multi-mode power generation system can set different operation modes according to different requirements, so that the new energy large base can meet higher requirements.

The invention discloses a control method and device for a supercritical carbon dioxide recompression cycle power generation system, and the method comprises the steps: predicting the load change of the supercritical carbon dioxide Brayton cycle power generation system according to the historical operation data and current operation state of the supercritical carbon dioxide Brayton cycle power generation system; predicting the surge risk of the compressor according to the load change of the supercritical carbon dioxide Brayton cycle power generation system; according to the load change of the supercritical carbon dioxide Brayton cycle power generation system, the split ratio is adjusted, so that the recompression Brayton cycle power generation system operates at the optimal efficiency; and the flow, pressure and temperature of a compressor working medium in the supercritical carbon dioxide Brayton cycle power generation system are adjusted according to the surge risk, so that the compressor works in a non-surge area. When the supercritical carbon dioxide Brayton cycle power generation system approaches the surge boundary, the system adjusts the opening degree of the bypass valve in advance for flow release, so that active closed-loop control of surge prediction-response-relief is achieved, a compressor is effectively prevented from entering an unstable area under sudden load change, start and stop or extreme disturbance, and the service life of the compressor is prolonged. And the safety stability and the operation continuity of the system are obviously improved.

The invention relates to the technical field of compressed carbon dioxide energy storage, and discloses a liquid compressed carbon dioxide energy storage system and method. The system comprises a carbon dioxide circulation system, and the circulation system comprises a first liquid storage tank (1), a first evaporation unit (100), an energy storage unit (200), a second liquid storage tank (6), a second evaporation unit (300), an energy release unit (400) and a condensation unit (500) which are communicated in sequence. According to the system provided by the invention, a liquid compressed carbon dioxide circulating system is deeply coupled with waste heat and waste cold in an ethylene process, so that the problems of a gasification heat source of liquid carbon dioxide on a high-pressure side and a liquefaction cold source of gaseous carbon dioxide on a low-pressure side of a pressure storage system are solved; the bottleneck constraint of heat energy utilization of the conventional adiabatic compression carbon dioxide energy storage system is broken through; elastic distribution of compression heat between industrial steam production and carbon dioxide overheating can be achieved.

The invention provides a fused salt heat storage coupled compressed air energy storage cooperative power generation system and a control method thereof.The fused salt heat storage coupled compressed air energy storage cooperative power generation system comprises a data acquisition module, a multi-target optimization decision algorithm based on dynamic programming, an energy distribution module, a dynamic adjustment module and a safety protection module; a multi-objective optimization decision algorithm based on dynamic programming automatically switches system working modes, an energy distribution module optimizes fused salt and air flow of a high-temperature fused salt air heat exchanger, and a dynamic adjusting module adjusts fused salt pump flow, compressor rotating speed and valve opening in real time. And the safety protection module is used for monitoring and preventing over-temperature, fused salt solidification and pipeline corrosion. The problems that in the prior art, a fused salt heat storage type photo-thermal power generation system is insufficient in heat storage capacity under the extreme weather condition, a compressed air energy storage system depends on fossil fuel, the afterburning efficiency is low, and the energy loss is caused due to the low system coupling degree can be effectively solved.

The invention discloses an energy storage-heat pump linkage heat, power and cold collaborative peak regulation system and an operation method. The system comprises a combined heat and power generation unit, an evaporator, a condenser, a compressor, wind power and photovoltaic power generation equipment, an electric power controller, a cross-seasonal energy storage chamber and the like. Surplus electric quantity of a power grid is consumed through a heat pump and converted into heat energy and cold energy in a power off-peak period, and part of condensed water of a steam turbine is heated through heat storage in a power peak period to improve the power output of a unit; the unit heats heating return water through heat storage release and steam turbine steam extraction in a cascade mode in winter, electric heating peak regulation is achieved, external cooling and electric cooling peak regulation are achieved through electric cooling conversion and cold energy release in summer, and cross-seasonal energy storage and peak regulation are achieved through electric heating and cold conversion in spring and autumn. Power storage is replaced by cold storage and heat storage, peak regulation is promoted through heat supply and cold supply, and the new energy power consumption level can be greatly improved.

The invention discloses a pressure storage and heat storage coupled regenerative heat pump power storage system and a regulation and control method thereof. The system is composed of an electric-power generation integrated unit, an energy storage compression and energy release expansion integrated unit, an energy storage expansion and energy release compression integrated unit, a high-temperature heat exchanger, a backheating heat exchanger, a cold energy absorption heat exchanger, a heat storage and cold storage storage tank, a high-pressure gas storage tank and the like. And an energy storage / energy release loop, a heat storage / heat release loop, a cold storage / cold release loop and a pressure heat coupling loop are formed by connecting pipelines. In the energy storage mode, the compressor unit is driven by electric energy to conduct multi-stage compression, and compression heat and expansion cold are stored in the high-temperature storage tank and the low-temperature storage tank correspondingly. In the energy release mode, the heat storage medium and the cold storage medium are sequentially released to supply heat or cold to the circulating working medium, and the expansion unit is driven to drive the generator to generate electricity. According to the method, bidirectional operation of energy storage and energy release is achieved through valve switching and circulation control, and power output and load change are adjusted within a second level through a pressure-heat coupling mechanism.

The invention discloses a two-phase cold plate liquid cooling ORC waste heat recovery and photovoltaic cooperative energy supply system and method, and relates to the technical field of energy management and waste heat utilization. The two-phase cold plate liquid cooling ORC waste heat recovery and photovoltaic cooperative energy supply system and method comprises the following steps that S1, thermal parameters and electric power states related to cooperative energy supply are collected, and a thermoelectric cooperative input data set is constructed and preprocessed; s2, the supply and demand difference of the high-temperature steam in the main condensation branch and the ORC branch is recognized; s3, coordinating a photovoltaic power supply structure and a cooperative energy supply sequence, and judging the matching degree of cooperative energy supply to a load; and S4, evaluating a cooling, heating and power cooperation and double-source coupling state in combination with a load matching condition and an output behavior. The problems that in an existing two-phase cold plate liquid cooling structure, high-temperature steam is not recycled, photovoltaic power generation does not participate in linkage energy supply, the power source is single, waste heat waste is serious, and energy collaboration is insufficient are solved.

The invention provides a steam turbine, a regenerative system and a control method thereof, and the method comprises the steps: collecting data through a multi-mode sensor such as a steam pressure sensor, and constructing a digital twin model containing a thermodynamic equation and equipment aging parameters through the fusion of a space-time alignment algorithm; model deviation is predicted and dynamically calibrated by means of an LSTM network, a near-end strategy optimization algorithm is adopted to solve a Pareto optimal solution of heat recovery efficiency maximization and corrosion rate minimization in a digital twin environment, and a control instruction is generated. And when the corrosion prediction risk exceeds a threshold value, a control strategy is dynamically adjusted, and health-efficiency cooperative control is realized. Meanwhile, the invention further relates to a corresponding collaborative optimization device and corrosion monitoring equipment, and a multi-modal data fusion module is deployed at an edge computing node to realize efficient data processing and analysis. The thermodynamic cycle efficiency of the steam turbine regenerative system is effectively improved, the corrosion risk is reduced, the service life of equipment is prolonged, and remarkable economic and technical benefits are achieved.

The invention relates to the technical field of power grids, in particular to a load shedding anti-overspeed control method during power grid decoupling of a compressed air energy storage system. Acquiring rotating speed data of the compressed air energy storage system when the power grid is decoupled, and monitoring the rotating speed data; a load shedding mode is preset, and block valves and exhaust valves at the front ends of all stages of expansion machines are controlled; and executing a load shedding mode according to the change of the rotating speed data, and controlling the rotating speed of the system to be reduced to a preset range. The load shedding mode is divided into two stages, wherein in the first load shedding stage, rotating speed control is conducted by closing block valves at the front ends of all stages of expansion machines; and in the second load shedding stage, the residual working medium is discharged by opening the exhaust valve. A system standby recovery strategy is established, and stable transition of the system from an emergency state to a normal operation state is realized. According to the method, the problems of inaccurate rotating speed control, insufficient residual working medium treatment and the like during power grid decoupling of the CAES system in the prior art are effectively solved, and the operation safety and reliability of the system are improved.

The invention discloses a transcritical carbon dioxide energy storage power generation system for combined supply of cooling, heating and power, and belongs to the technical field of energy storage. Low-pressure carbon dioxide is compressed to be in a supercritical high-pressure state through the structure that the three-stage compressor and the three-stage intercooler are matched; the maximum pressure increase is obtained by using the minimum entropy increase; complete release of high-pressure carbon dioxide is realized through cooperation of a three-stage heat regenerator and a three-stage turbo expander; the condition that the equipment conformity is too high due to single-stage expansion is avoided; the surplus electric energy is stored in the valley period of the electricity price, and the high-voltage carbon dioxide is released for power generation in the peak period of the electricity price, so that economic benefits are obtained through the electricity price difference, and rapid peak regulation capacity is provided for a power grid; the high-pressure carbon dioxide storage tank adjusts the capacity of an air bag through pressure-resistant oil, so that the storage requirement of constant-pressure high-pressure carbon dioxide is met, the material cost of the high-pressure carbon dioxide storage tank is reduced, and the manufacturing cost of a power generation system is reduced; the multi-stage compression efficiency of the low-pressure carbon dioxide storage bag is improved by adopting a double-layer air bag structure.

The invention discloses a thermal power generating unit, flywheel and compressed air hybrid energy storage system and an operation method, and relates to the technical field of flexibility improvement of novel energy storage and thermal power systems. The system comprises a flywheel energy storage subsystem, a compressed air energy storage subsystem, a thermal power collaborative heat exchange system, a flywheel-CAES switching coupling module and an intelligent control system. The flywheel energy storage subsystem is responsible for millisecond-level frequency modulation response, the compressed air energy storage subsystem provides minute-level stable output, and the flywheel energy storage subsystem and the compressed air energy storage subsystem cooperatively work through an intelligent control system to realize a composite regulation mode of'fast response-high capacity '; a compressed air side is coupled with a thermal power plant turbine steam extraction system, a boiler flue gas system and a condensed water system to improve the energy release efficiency; the flywheel side interacts with a power grid in real time through a bidirectional converter, and rapid frequency support is achieved. The system has the quick response capability and the long-time energy supporting capability, the frequency modulation and peak regulation performance of the thermal power generating unit is remarkably improved, and the system has high engineering popularization value and application prospects.

The invention belongs to the technical field of energy storage, and relates to a compressed air and water coupled multi-energy co-production energy storage system and method, comprising an air compressor, a first heat exchanger, a second heat exchanger, an air turbine and a cooling module; a circulating medium of the first circulating loop is fused salt; the circulating medium of the second circulating loop is water, and the second circulating loop comprises a low-temperature water tank, a first booster pump, a second heat exchanger, a high-temperature water tank, a flash tank, a third heat exchanger, a steam turbine high-pressure cylinder and a heating module which are sequentially communicated end to end. Compression heat generated by compressed air can be stored in fused salt and water, special geographical conditions needed for storing high-pressure air are avoided, meanwhile, in the energy release stage, the stored water is used for flash evaporation and fused salt heating and then enters a steam Rankine cycle to do work, combined heat and power generation can be achieved in winter, combined cooling and power generation can be achieved in summer, and the energy-saving effect is achieved. Therefore, combined supply of different kinds of energy in different seasons is achieved, and the energy supply efficiency is improved.

A gas turbine engine for an aircraft includes a fan and a turbo-engine having a combustor that combusts compressed air and fuel to generate combustion gases and a power turbine coupled to a shaft for driving the fan. The gas turbine engine includes a direct contact condenser for condensing steam in a first flow into liquid water droplets and to generate a second flow including the liquid water droplets, a water tank for collecting the liquid water droplets of the second flow, and a water pump for introducing the liquid water droplets from the water tank into the direct contact condenser to act as condensation nuclei for the steam in the first flow. The first flow is an exhaust-vapor flow extracted from the combustion gases and the second flow is an exhaust-condensate flow from the direct contact condenser.

A method may include obtaining, from a camera device, thermal image data for a steam area of a plant facility. The steam area may include a steam trap for a steam network. The method may further include obtaining plant steam data regarding the steam trap. The method may further include determining pixel data regarding the steam trap using the thermal image data and an image segmentation process. The method further includes determining various temperature values across the steam trap using the pixel data. The method may further include determining predicted steam trap data using the temperature values, the plant steam data, and a machine-learning model. The method may further include transmitting a command that adjusts one or more parameters of the steam network based on the predicted steam trap data.

The invention discloses an offshore multi-energy combined supply system based on constant-pressure compressed carbon dioxide energy storage and an operation method of the offshore multi-energy combined supply system. The system comprises a working medium storage device, a heat energy storage device, a charging process module, a gas-liquid conversion loop, a discharging process module, a cold energy supply module and a heat energy supply module. By improving the energy release process structure of the compressed carbon dioxide energy storage system, the pressure of high-pressure carbon dioxide is reduced to normal pressure after primary expansion, so that low-temperature cold energy is generated while power is generated, consumption of stored heat is saved, residual stored heat is used for heat supply, the comprehensive utilization rate of energy is increased, and combined supply of cooling, heating and power is achieved; the system further comprises an integrated thermally-driven combined cooling and power supply subsystem capable of switching power generation / refrigeration modes, organic Rankine cycle and jet refrigeration cycle are highly integrated, investment cost and space occupation are reduced, redundant heat energy is flexibly and efficiently converted into electric energy or cold energy, and the flexibility of multi-energy combined supply of the system is improved.

Disclosed is a marine fuel cell-based integrated heat, electricity, and cooling supply system comprising a power supply system and a waste heat recovery system; the power supply system comprises wind turbine generator sets, solar generator sets, and a fuel cell power module; the waste heat recovery system encompasses a turbine power generation module and a lithium bromide refrigeration module; the fuel cell power module is connected to both the turbine power generation module and the lithium bromide refrigeration module; the turbine power generation module is used to generate electricity using waste heat. This approach fully exploits the waste heat from the exhaust gas generated by the fuel cell power module, resulting in a high overall energy utilization rate. The self-consumption electricity and pure hydrogen fuel for the integrated energy supply system can be obtained from solar and wind energy, ensuring low carbon emissions for the entire system.

The invention relates to an electrolytic hydrogen production and fuel cell waste heat gradient utilization system and method based on an organic Rankine cycle, and belongs to the field of new energy. The system comprises a wind power generation unit, a photovoltaic power generation unit, a storage battery energy storage system, an electrolytic hydrogen production device, a hydrogen storage system, a fuel cell power generation unit, a waste heat utilization unit and an organic Rankine cycle device, and can be used for realizing multi-element consumption and gradient utilization of renewable energy sources. The method specifically comprises the following steps: establishing equipment models in a system, wherein an electrolytic bath considers five states of shutdown, cold start, standby, hot start and standby; on the basis of a mixed integer linear programming method, operation constraints of all equipment, renewable energy output prediction and electricity, heat and hydrogen load requirements are integrated, an optimization scheduling model meeting the electricity, heat and hydrogen load requirements and economical efficiency of the system is constructed, output of all the equipment is coordinated, and finally the optimization targets of maximizing the economical efficiency of the system and meeting the electricity, heat and hydrogen load requirements of the system are achieved.

The invention discloses an energy storage and release double-closed cycle carbon dioxide electric heating energy storage system and an energy storage method, and belongs to the technical field of energy storage. The energy storage system comprises an energy storage closed circulation system, an energy release closed circulation system, a heat storage system and a cold storage system; the energy storage closed circulation system and the energy release closed circulation system share the same set of heat exchanger A and heat exchanger B which are connected in series, and the flowing directions of carbon dioxide working media in the heat exchanger A and the heat exchanger B are opposite to the flowing directions of media in the heat storage system and the cold storage system; the heat storage system exchanges energy with a carbon dioxide working medium in the energy storage closed circulation system through a heat exchanger A and a heat exchanger B; the heat storage system exchanges energy with the carbon dioxide working medium in the energy release closed circulation system through the heat exchanger A and the heat exchanger B. The energy storage system can meet the energy storage construction requirements under diversified scenes such as the power supply side, the power grid side and the user side. The method can adapt to energy storage construction requirements in diversified scenes such as a power supply side, a power grid side and a user side.

Systems related to concentrated solar combination heating and power generation; solar heating; industrial heat driven power generation; thermal storage systems and heat exchanger and power generation systems therefore, including any of the above with optional supplemental fuel production, and associated methods, are generally described.

Systems and generating power in an organic Rankine cycle (ORC) operation to supply electrical power. In embodiments, an inlet temperature of a flow of gas from a source to an ORC unit may be determined. The source may connect to a main pipeline. The main pipeline may connect to a supply pipeline. The supply pipeline may connect to the ORC unit thereby to allow gas to flow from the source to the ORC unit. Heat from the flow of gas may cause the ORC unit to generate electrical power. The outlet temperature of the flow of the gas from the ORC unit to a return pipe may be determined. A bypass valve, positioned on a bypass pipeline connecting the supply pipeline to the return pipeline, may be adjusted to a position sufficient to maintain temperature of the flow of gas above a threshold based on the inlet and outlet temperature.

The invention relates to the technical field of immersion liquid cooling control, in particular to an immersion liquid cooling data control method and system combining photovoltaic and low-temperature waste heat power generation, and the method comprises the steps: transmitting low-temperature waste heat generated by the operation of a server to a liquid cooling circulation system, capturing solar radiation energy through a synchronous photovoltaic module, forming basic energy input, and transmitting the basic energy input to a server; generating a symbiotic energy substrate; the symbiotic energy substrate drives dual-path conversion, and photovoltaic electric energy is directly supplied to a cooling system pump set and a control unit to maintain liquid cooling circulation; afterheat pushes an expansion unit to generate power through organic working medium gasification, so that energy consumption of a cooling system is supplemented, and an energy flow self-driving system is formed; operation parameters of the energy flow self-driven system are input into the control core, and a three-state strategy is dynamically executed based on the load state and photovoltaic output. The system comprises a liquid cooling cabinet, a CDU control unit, a PLC, a solar panel, a photovoltaic cell, an illumination intensity sensor, a waste heat recovery device, a mode switcher and the like. According to the invention, system operation mode switching time delay is eliminated.

The invention discloses a dynamic air supply type adiabatic compressed air energy storage system for rapid frequency modulation of a power grid and a control method, and the system comprises a multi-stage compression unit, an interstage cooling unit, an air storage device, a heat storage device, a multi-stage expansion unit, an air supply control pipeline system, an energy release heating unit and a central control system. A plurality of air supply points are arranged at different stages of the expansion machine of the multi-stage expansion unit, and the output power of the expansion machine is quickly controlled by combining the dynamic adjustment of the central control system on the air supply position and flow; the system integrates multi-stage compression, inter-stage cooling, heat energy recovery, intelligent energy release heating and predictive frequency response, and has the advantages of high response speed, high output stability, excellent frequency modulation precision and the like. The system is suitable for a modern power grid with high-proportion new energy access, and is helpful for improving the frequency stability of the power grid and the scheduling flexibility of the energy storage system.

The invention provides a renewable energy driven iron-based zero-carbon-emission energy storage power generation system based on iron-oxygen circulation, and belongs to the technical field of renewable energy utilization and power generation, and the renewable energy driven iron-based zero-carbon-emission energy storage power generation system comprises a renewable energy consumption module, an alkaline water electrolysis hydrogen production module, a hydrogen reduction reaction module, a combustion energy supply module and a steam Rankine cycle module; the renewable energy consumption module is used for acquiring and converting renewable energy into electric energy; the alkaline water electrolysis hydrogen production module is used for producing hydrogen by using electric energy; the hydrogen reduction reaction module utilizes hydrogen to carry out reduction reaction to store energy; and the steam Rankine cycle module is used for converting energy released by combustion into electric energy. Based on iron-oxygen circulation and through cooperative operation of the renewable energy consumption module, the alkaline water electrolysis hydrogen production module, the hydrogen reduction reaction module, the combustion energy supply module and the steam Rankine cycle module, efficient consumption of renewable energy, effective storage and conversion of energy and zero-carbon-emission green electricity production are achieved.