85 results about "Micro gas turbine" patented technology

A micro gas turbine engine may include a single-piece rotor having a compressor, a turbine, and a shaft manufactured from an additive manufacturing process. The compressor, turbine, and shaft are a single uniform piece and not separately joined together. The micro gas turbine engine may further include a ceramic cover having built in fuel injectors and stator blades for the compressor. The micro gas turbine engine may further include a inner combustor lining having built in stator blades for the turbine.

The invention relates to a micro-grid system multi-objective optimization method based on an NSGA-GMO algorithm. The micro-grid system comprising a photovoltaic cell, a wind driven generator, a gas turbine and an energy storage cell is constructed; analyzing the fuel cost of the micro gas turbine; constructing a multi-target optimal scheduling model of the micro-grid system; an NSGA-GMO algorithm is adopted to solve the multi-target optimal scheduling model, and an optimal solution is obtained; and according to the optimal solution, guiding the micro-grid system to dispatch and operate. According to the method, the multi-target optimal scheduling model of the micro-grid system containing the distributed power supply is constructed, and the optimal solution of the multi-target optimal scheduling model is solved by using the NSGA-GMO algorithm, so that the power generation cost and the pollution abatement cost of the micro-grid system can be reduced; and the NSGA-GMO algorithm has better optimization capability and convergence.

The invention belongs to the technical field of testing devices, and discloses a micro gas turbine generator set testing device and a using method thereof.The micro gas turbine generator set testing device comprises a bottom plate, a plurality of mounting plates are slidably connected to the bottom plate, and two movable plates are symmetrically slidably connected to each mounting plate; a distance adjusting assembly is arranged between the two movable plates, fixed shells are fixedly connected to the movable plates, vertical plates are slidably connected into the fixed shells, height adjusting assemblies used for adjusting the height positions of the vertical plates are arranged in the two fixed shells, and the upper ends of the vertical plates extend to the positions above the fixed shells and are provided with multi-point supporting assemblies. A displacement assembly used for adjusting the position of the mounting plate is arranged between the mounting plate and the bottom plate, a movable frame is slidably connected to the bottom plate, and a test assembly is movably arranged on the movable frame; the device is simple in overall structure, and can carry out efficient, convenient and stable test operation on the micro gas turbine generator set.

The invention discloses a hydrogen energy production and production-and-use distributed energy supply system, which relates to the technical field of new energy, and comprises a hydrogen production module which comprises a proton exchange membrane electrolytic tank, an alkaline electrolytic tank and a solid oxide electrolytic tank and runs through a three-mode collaborative architecture, in combination with a light-electricity-heat synergistic catalysis device and a wastewater or industrial tail gas coupling hydrogen production device, the hydrogen storage and safety management module comprises a metal hydride hydrogen storage unit, a metal organic framework material hydrogen storage unit and a liquid organic hydrogen storage unit. According to the invention, multi-source, high-efficiency and low-cost hydrogen production is realized through the hydrogen production module with a three-mode collaborative architecture in combination with light-electricity-heat collaborative catalysis and wastewater / industrial tail gas coupling hydrogen production, and meanwhile, a solid oxide fuel cell and micro gas turbine combined cycle, a hydrogen combustion turbine direct drive and a multi-type energy storage unit in the energy supply module realize multi-source, high-efficiency and low-cost hydrogen production. And in cooperation with waste heat-cold energy gradient utilization, the energy conversion efficiency and the comprehensive energy utilization rate are greatly improved.

The low-NOX-emission hydrogen-ammonia fusion micro gas turbine comprises a combustion chamber, a plurality of secondary air inlet holes are formed in the wall face of the combustion chamber, and the secondary air inlet holes are used for feeding part of compressed air and a first path of liquid ammonia fuel into the combustion chamber; a cracking chamber with a cracked gas outlet is arranged in the combustion chamber and located at one end close to the turbine, a catalyst is arranged in the cracking chamber, a second path of liquid ammonia fuel is fed into the cracking chamber, the second path of liquid ammonia fuel is cracked under the action of heat energy of the combustion chamber and the catalyst, and the second path of liquid ammonia fuel is fed into the cracking chamber. And obtained cracked gas enters the combustion chamber through the cracked gas outlet to be combusted. High-temperature flue gas generated by the combustion chamber is used as a heat source, ammonia is catalytically cracked in the combustion chamber of the gas turbine to generate hydrogen-rich mixed gas, the hydrogen-rich mixed gas is introduced into the combustion chamber to serve as a combustion improver, ammonia combustion flame is stabilized, NOX emission is reduced, and meanwhile stepped utilization of energy is achieved.

The application discloses a multi-time scale hierarchical scheduling method for a combined heat and power system containing electric vehicles, and the system comprises a micro gas turbine unit, an absorption refrigeration unit, a ground source heat pump unit, a wind turbine unit, photovoltaic, a battery, a super capacitor and a heat storage device. The optimization method contains two time scales. In the day-ahead stage, economic scheduling is carried out according to the day-ahead predicted power value of wind power and photovoltaic and the day-ahead predicted value of load power in the system, and a target function and optimization constraint condition are established, and the result is used as a reference for the day-ahead optimization. In the day-ahead stage, a two-layer rolling optimization model is considered, a target function and a constraint are established, and a model predictive control (MPC) rolling optimization layer corrects the result of the upper layer according to real-time predicted power information and non-planned behavior of the electric vehicle (EV). The application adopts a multi-time scale hierarchical optimization strategy, real-time tracks the optimal scheduling strategy of the combined heat and power system containing electric vehicles, and realizes a win-win situation between the electric vehicle owner and the micro-grid operator.

The present invention discloses a linear optimization method for real-time dispatch of energy in an isolated microgrid, including designing an isolated microgrid structure based on a multi-agent system, designing a real-time dispatch optimization method for the isolated microgrid, and establishing a real-time dispatch linear model for the isolated microgrid. The isolated microgrid increases the absorption resistance to absorb the excess power to ensure real-time power balance; by establishing a linear model of a battery, a micro gas turbine and an absorption resistance, the isolated microgrid is transformed into a simple linear programming model with a small amount of calculation, and then the intelligent agent is used to collect data information such as the output plan of the battery and micro gas turbine scheduled before the day, the deviation value of renewable energy and load between the day-ahead dispatch and the real-time dispatch, and the real-time dispatch plan of energy is obtained by optimization through a linear programming solution algorithm. The present invention can improve the speed and ability of the isolated microgrid to handle the uncertainty of load and renewable energy in real time, and improve the reliability of the stable operation of the isolated microgrid.

The invention discloses a highway self-consistent energy system based on ammonia energy storage and an operation method of the highway self-consistent energy system, and belongs to the technical field of comprehensive energy systems. The system comprises an energy supply part, an electricity-hydrogen conversion unit, an ammonia energy storage unit, a multi-energy flow load part and a cascade energy utilization unit, the cascade energy utilization unit comprises a solid oxide fuel cell module, a micro gas turbine, a waste heat boiler and a heat storage tank; the solid oxide fuel cell module uses ammonia in an ammonia storage tank for first-stage power generation; high-temperature waste gas is guided into the micro gas turbine for second-stage power generation; medium and low temperature waste heat discharged by the micro gas turbine is captured by the waste heat boiler and stored in the heat storage tank; and heat energy in the heat storage tank is used for cold-state start preheating of the ammonia synthesis module in the ammonia energy storage unit by a start preheating loop. According to the system, energy gradient utilization of first-stage power generation, second-stage power generation and third-stage heat supply is achieved, the multi-energy flow load requirements of electricity, heat and hydrogen can be met at the same time, and the total energy efficiency, the self-consistent rate and the green low-carbon level of the system are greatly improved.

The present invention relates to a DC bus hierarchical response coordinated control method for a hybrid power generation system of supercapacitor energy storage and micro gas turbine, comprising: a micro gas turbine, a generator, a three-phase bidirectional converter, a bus capacitor, an inverter, a load, a DC converter, a supercapacitor, a three-phase converter controller and a DC converter controller. The high-power dynamic response of the supercapacitor energy storage unit compensates for the low dynamic response of the micro gas turbine output power, so that the system is in a state of instantaneous power balance in real time, ensuring the stability of the DC bus voltage and enhancing the adaptability of the micro gas turbine power generation system to pulse power loads. It can ensure the stable operation of the hybrid power generation system of supercapacitor energy storage and micro gas turbine, and improve the transient power quality of the system under impact loads. The proposed method can effectively improve the adaptability of the micro gas turbine power generation system under complex working conditions, and has great promotion and application value.

The invention relates to the technical field of virtual power plants, in particular to a virtual power plant multi-class power resource collaborative clearing method considering uncertainty, and the method comprises the steps: constructing a hierarchical interaction architecture of a virtual power plant and a power grid for multi-class power resources provided by the virtual power plant for the operation of the power grid; constructing a virtual power plant operation model by taking an energy storage operation constraint, a micro gas turbine operation constraint, an electric energy transaction constraint, an electric power balance constraint and a multi-class electric power resource balance constraint as constraint conditions and taking minimization of the operation cost of the virtual power plant as a target; establishing a multi-virtual power plant multi-class power resource collaborative clearing optimization model; aiming at uncertainty of new energy output, introducing distribution robust opportunity constraints, and constructing a virtual power plant multi-class power resource distribution robust collaborative clearing optimization model; and considering information privacy of each main body and energy and information interaction among a plurality of virtual power plants, proposing a distributed solution algorithm fusing a bisection method and an alternating direction multiplier method, and solving the collaborative clearing optimization model.

The present invention provides a rotor system, a micro-gas turbine generator set, and a deicing method. The rotor system includes a rotating shaft, which is an integrally formed structure; bearings, a motor, a compressor, and a turbine are mounted on the rotating shaft; the bearings are all air bearings made of conductive materials, and the air shafts are connected to a power source and a switch; and a water absorption chamber is provided near the air inlet of the air bearing, filled with a water absorbent. This invention can solve the technical problem of water accumulation in the air bearings used in the rotor system and micro-gas turbine generator set, and the throttle orifices thereof are prone to ice formation.

This invention discloses a micro gas turbine based on a turbocharger, featuring a dual-mode flame stabilization device in its annular combustion chamber. This device includes a combustion chamber body structure, a sector-divided radial jet structure, and an axial jet standby flame structure. The sector-divided radial jet structure divides the gas collection chamber circumferentially into multiple independent sector gas collection chambers. Each sector is equipped with an independent high-speed solenoid valve. Under high-load conditions, when backfire precursors are detected, only the radial jet in a local sector is triggered to suppress backfire. The axial jet standby flame structure injects a richer premixed gas into the combustion zone inlet under low-load conditions to form a standby flame, preventing the main flame from being blown out.

This invention relates to a regenerative micro gas turbine, comprising: an upper volute, a lower volute, a compressor, a turbine, a W-tube, two regenerators, two combustion chambers, and two J-tubes. The compressor is disposed within the upper volute, and the turbine is disposed within the lower volute. The regenerators, combustion chambers, and J-tubes are rotationally symmetrical about the upper volute. The upper volute is connected to the cold fluid inlet of each regenerator, the cold fluid outlet of each regenerator is connected to the J-tube, the J-tube is connected to the combustion chamber, the combustion chamber is connected to the lower volute, the lower volute is connected to the center port of the W-tube, and the two side ports of the W-tube are respectively connected to the hot fluid inlets of the two regenerators, thereby realizing the utilization of exhaust gas and improving thermal efficiency.

This invention provides a cylindrical heat exchanger and a micro gas turbine. The cylindrical heat exchanger includes a hollow inner cavity and a circumferential heat exchanger wall. The heat exchanger wall includes a first gas collecting pipe, a second gas collecting pipe, and a three-period minimally oriented curved surface (TPMS) structural unit. Multiple first and second gas collecting pipes are spaced apart circumferentially along the heat exchanger wall and are all arranged axially along the heat exchanger wall. A TPMS structural unit is provided between any two adjacent first and second gas collecting pipes. The TPMS structural unit includes a TPMS wall and TPMS holes. The first gas collecting pipe, the flow channel within the TPMS wall, and the second gas collecting pipe are sequentially connected to form a first flow channel, and the TPMS holes, which are separated by the TPMS wall, form a second flow channel. This invention, by using a TPMS wall surface in the cylindrical heat exchanger, achieves a lightweight structure with a large specific surface area, resulting in higher thermal efficiency, lightweight design, low resistance, and good noise reduction, while also reducing manufacturing costs.

The invention provides a starting method and device of a micro gas turbine, a storage medium and an electronic device.The method comprises the steps that a starting signal of the micro gas turbine is responded, a starting generator is started and enters a first starting stage, and in the first starting stage, the rotating speed of the starting generator is controlled to rise through open loop, the starting generator is connected with the micro gas turbine through a coupling; in the first starting stage, collecting a first bus voltage and a first phase current of the generator in real time; based on the first bus voltage and the first phase current, controlling the starting generator to switch from the first starting stage to a second starting stage; and in the second starting stage, the rotating speed of the generator is continuously increased through closed-loop control to reach the ignition rotating speed of the micro gas turbine. According to the embodiment, the technical problem that in the prior art, starting of the micro gas turbine is controlled through a position sensor, and the occupied space is large is solved, and the cost and the size of a power generation system are reduced.

This invention provides a multi-microgrid collaborative scheduling method based on green energy balance and time-of-use response, relating to microgrid collaborative optimization, renewable energy generation applications, and demand-side response. The method includes: Step S1, establishing various distributed power source models and demand-side response models in the multi-microgrid, including photovoltaic equipment models, wind power equipment models, micro gas turbine models, and energy storage system models; Step S2, constructing a three-layer hybrid game model for the multi-microgrid, including an upper-layer microgrid scheduling model, a middle-layer microgrid-user non-cooperative game model, and a lower-layer cooperative game model based on green energy balance allocation factors; Step S3, using ENGO to solve the three-layer hybrid game model and outputting the optimal scheduling scheme for the multi-microgrid. This invention solves the supply-demand mismatch problem caused by high-proportion distributed renewable energy grid connection conditions and regional differences between different microgrids, optimizing the trading strategy and scheduling scheme of multi-microgrids.

The centrifugal dust removal device comprises a shell, a primary dust removal unit and a fine dust removal unit, the shell comprises a first shell section and a second shell section which are sequentially communicated in the airflow direction, and the inner wall face of the second shell section forms the inner wall face of the fine dust removal unit; the primary dust removal unit is arranged at the air inlet end of the first shell section and used for conducting primary coarse separation on sucked air flow. The fine dust removal unit is arranged in the second shell section and comprises a radial impeller rotationally arranged in the second shell section and a blade flow guider fixedly arranged on the inner wall surface of the fine dust removal unit; the radial impeller is used for receiving the air flow treated by the primary dust removal unit and guiding the air flow from the middle part of the first shell section to the inner wall surface of the second shell section to the periphery in the radial direction; the blade flow guider is configured to conduct secondary flow guiding in the spiral direction on air flow from the outer edge of the radial impeller from the inner wall face of the second shell section to the peripheral area of the rotating shaft where the radial impeller is located.

The application discloses a kind of micro gas turbine online self-adapting high-efficiency intelligent control method, principle as follows: the fuel flow and rotating speed of gas turbine control quantity such as input airborne deep prediction model, the state parameter prediction value of gas turbine is calculated in combination with the environmental condition of current time.The performance deviation determination threshold is set, when the state parameter prediction value is less than or equal to performance deviation determination threshold, the optimal rotating speed is calculated according to high-efficiency optimal rotating speed adjustment control method;When the state parameter prediction value is greater than performance deviation determination threshold, optimal rotating speed control law is obtained based on online deep extreme limit learning machine training, and update.The application decouples strong time-varying factor (environmental temperature) and weak time-varying factor (performance degradation).Strong time-varying factor is considered in high-efficiency control inner loop, and weak time-varying factors such as performance degradation are considered in adaptive update control outer loop, which maximizes the frequency of update control law, and is more convenient for engineering implementation of controller.

The invention discloses a micro gas turbine generator set, and relates to the field of gas turbine generator devices.The micro gas turbine generator set comprises a generator body, a gas inlet is formed in one end of the generator body, the end of the gas inlet is connected with a gas feeding pipe, and the gas feeding pipe is composed of a fixing pipe, a gas injection assembly and a connecting flange; and the fixed pipe is fixedly connected with the gas inlet through the connecting flange. According to the micro gas turbine generator set, fuel gas sprayed out through the discharging holes in different directions can interact in the combustion cavity to form a uniform flow field, the fuel gas can be gradually diffused and fill the whole combustion cavity under the action of the flow field, dead angles and non-uniform areas of fuel gas distribution are reduced, fuel gas backflow is prevented, and the service life of the fuel gas turbine generator set is prolonged. Therefore, the stability of airflow in the combustion cavity can be maintained, it is guaranteed that the combustion process is carried out according to the design direction and mode, the problems of unstable combustion, even backfire and the like caused by gas backflow are solved, and the outflow amount of gas can be accurately controlled.

The invention aims to provide a micro gas turbine oil supply system and a multi-fuel nozzle suitable for a low-temperature environment, the micro gas turbine oil supply system comprises a flame tube outer cylinder, a flame tube inner cylinder, an oil transportation header pipe and an oil transportation branch pipe, the flame tube outer cylinder is mounted outside the flame tube inner cylinder, and a combustion chamber is formed between the flame tube outer cylinder and the flame tube inner cylinder; a flame tube outer tube oil supply interlayer is arranged in the flame tube outer tube, an oil conveying header pipe is communicated with the flame tube outer tube oil supply interlayer, an oil conveying branch pipe is arranged on the flame tube outer tube, one end of the oil conveying branch pipe is communicated with the flame tube outer tube oil supply interlayer, and an oil spraying nozzle is installed at the other end of the oil conveying branch pipe and located in a combustion chamber. By reasonably arranging the structures such as the oil conveying main pipe and the oil conveying branch pipes, the structural strength of the flame tube is enhanced, waste heat of the flame tube is fully utilized for preheating fuel oil, meanwhile, the fuel oil is utilized for cooling the tube wall of the flame tube, and the effect of enhancing the starting performance in the low-temperature environment is achieved.

The invention discloses a power distribution network low-carbon economic dispatching method and system, and the method comprises the steps: building a target function with the minimization of the operation cost of a power distribution network operator as a target, and enabling the operation cost of the power distribution network operator to comprise the carbon transaction cost; establishing a power flow constraint, a safety constraint, an energy storage constraint, a micro gas turbine power generation constraint and a reactive power compensation device constraint corresponding to the target function, and modeling the uncertainty of photovoltaic power generation output and an electric vehicle charging load by using a distributed robust chance constraint; generating a power distribution network low-carbon economic dispatching model containing the optical storage charging station according to the target function, the power flow constraint, the safety constraint, the energy storage constraint, the micro gas turbine power generation constraint, the reactive power compensation device constraint and the photovoltaic power generation output and electric vehicle charging load uncertainty constraint, and solving the power distribution network low-carbon economic dispatching model to obtain a dispatching result. Therefore, more effective low-carbon economic dispatching is realized, and the economical efficiency is improved.

The invention relates to the field of energy management, and discloses a multi-micro-grid energy management method, device, equipment and medium, aiming at a micro-grid unit composed of a micro-gas turbine, an energy storage, a renewable energy source and a load, the method comprises the following steps: firstly, obtaining the previous actual micro-gas turbine power, the current actual energy storage energy state and the current prediction data of the micro-grid unit; then, nominal optimization is carried out by combining boundary conditions such as tie line power of the previous period of the neighbor micro-grid, and an optimization result including micro-gas turbine power, battery charging and discharging power and a nominal energy storage state of the next period is obtained; then, according to the difference between the current nominal energy storage state and the actual energy storage state, the real-time correction amount of the net power of the battery is calculated; and finally, by executing synthesis of the nominal instruction and the real-time correction amount, precise management of the micro-grid unit is realized. And the safe, economic, autonomous and cooperative operation effect of the multi-microgrid system in an uncertain environment is improved.

This invention discloses a fuel atomization system suitable for the combustion chamber of a regenerative micro gas turbine, comprising: a T-shaped evaporator, a swirling oil-gas duct, a coaxial atomizing nozzle, an air intake pipe, and a fuel line protection sleeve; the T-shaped evaporator, the swirling oil-gas duct, and the coaxial atomizing nozzle are arranged coaxially, the air intake pipe is eccentrically connected to the side wall of the coaxial atomizing nozzle and can introduce high-pressure gas from the section before the regenerator after the compressor, the initially atomized mixed oil and gas enters the swirling oil-gas duct for further atomization and then evaporates and is ejected through the T-shaped evaporator, the fuel line protection sleeve is coaxially arranged on the outside of the swirling oil-gas duct and the coaxial atomizing nozzle and can avoid the direct impact of high-temperature backflow gas on the coaxial atomizing nozzle. This invention can significantly optimize fuel atomization quality, shorten the combustion chamber length, improve combustion efficiency, and improve the uniformity of combustion chamber outlet temperature distribution by adding a coaxial atomizing nozzle and an air intake pipe upstream of the traditional evaporator.

The present invention relates to a fuel supply system (10) for a power generation system (1), in particular for a micro gas turbine system. The fuel supply system (10) comprises a fuel supply line (110), a main fuel line (120), a fuel distribution line (130), a fuel compressor (200), and a decoupling tank (300). The fuel supply line (110) is fluidically connected to the fuel compressor (200) and can be connected to a fuel source (11) in order to supply fuel from the fuel source (11) to the fuel compressor (200). The decoupling tank (300) is arranged downstream of the fuel compressor (200) and is fluidically connected to the fuel compressor (200) via the main fuel line (120). The fuel distribution line (130) is arranged downstream of the decoupling tank (300) and is fluidly connected to the latter.The fuel distribution line (130) is fluidically connectable to at least one combustion unit (20) of the power generation system (1) and is designed to supply the at least one combustion unit (20) with fuel from the decoupling tank (300).

The application discloses a power distribution network flexibility evaluation and resource configuration method and system, considers the characteristics presented in different time scales during the operation of the power distribution network, solves corresponding operation scene sets by using specific uncertainty methods, then comprehensively considers micro gas turbines, energy storage devices, demand response loads and other types of flexible resources, establishes respective flexibility capability models, finally designs and plans a flexible resource optimal configuration method combined with operation, realizes decoupling and information transmission of the planning layer and the operation layer by using a target cascade method, and realizes flexible configuration of multiple types of resources under the condition of meeting flexible supply and demand balance through repeated iteration.

The invention relates to a regional energy internet cooperative control method considering multi-element communication uncertainty. The method is technically characterized in that regional energy internet collaborative real-time control software is installed in a regional control center, a distributed renewable energy generator controller, a micro gas turbine generator controller, an energy storage system controller and an energy routing controller, and operating parameters and operating modes are set; establishing a unified measurement model of communication time delay, communication jitter and communication packet loss of the non-independent communication uncertainty event; establishing an estimation method of the unified measurement model of the non-independent communication uncertainty events; and realizing real-time cooperative control of the regional energy internet by adopting an event-triggered sliding mode control method. According to the method, the distribution characteristics and correlation of the multi-element communication deterministic events in the equipment information interaction process are fully considered, the cooperative real-time control function of the regional energy internet is realized, and the operation stability of the regional energy internet is improved.

The invention aims to provide a high-voltage wire deicing power device based on thermal mechanical cooperation, which comprises a box body and a box cover, the box cover is mounted on the box body, an air inlet, a generator fixing platform and a gas turbine fixing platform are arranged in the box body from front to back, a generator is mounted on the generator fixing platform, and a gas turbine is mounted on the gas turbine fixing platform. A micro gas turbine is installed on the gas turbine fixing platform and connected with a generator through a coupler, an exhaust pipeline is installed on the outer wall of the box body, an inlet of the exhaust pipeline is formed in the box body and connected with an exhaust port of the micro gas turbine, and an outlet of the exhaust pipeline is located in the tail of the box body. The problem of endurance performance of a mechanical deicing device using electric power as a power source under the low-temperature condition is solved, the mechanical deicing device can adapt to different application scenes and is high in stability, meanwhile, shaft work output by the gas turbine is used for generating power, an additional device is driven by the electric power, and the expansibility and controllability are high.

The invention provides a multi-microgrid collaborative scheduling method based on green power equalization and time-sharing response, and relates to the fields of microgrid collaborative optimization, new energy power generation application and demand side response. The method comprises the following steps: S1, establishing various distributed power supply models and demand side response models in the multi-microgrid, wherein the distributed power supply models comprise a photovoltaic equipment model, a wind power equipment model, a micro gas turbine model and an energy storage system model; s2, constructing a three-layer hybrid game model of multiple micro-grids, wherein the three-layer hybrid game model comprises an upper-layer micro-grid dispatching model, a middle-layer micro-grid-user non-cooperative game model and a lower-layer cooperative game model based on a green power equilibrium distribution factor; and S3, solving the three-layer mixed game model by adopting ENGO, and outputting an optimal scheduling scheme of the multi-microgrid. According to the method, the problem of supply and demand mismatching caused by high-proportion distributed new energy grid connection conditions and regional differences among different micro-grids is solved, and the transaction strategy and the scheduling scheme of the multiple micro-grids are optimized.

The present invention discloses a method for accurately calculating the performance of a micro-gas turbine based on the compressor and turbine characteristic diagrams. This algorithm is aimed at the performance calculation of a micro-gas turbine with a regenerator. The algorithm includes five steps. First, the performance parameters of the compressor and turbine under different working conditions are collected, and the collected data are fitted with a B-spline curve; the fitting curve is divided into equal parts, and linear interpolation is performed between adjacent curves at the equal-division points to make up for the data points that have not been collected; each operating point on the compressor performance curve diagram is traversed, and combined with the turbine performance diagram, the overall performance of the micro-gas turbine under all working conditions is calculated using thermodynamic formulas. In order to improve the calculation accuracy, the present invention adopts B-spline curve fitting, which has higher curve smoothness and greatly improves the calculation accuracy. In addition, the number of interpolated curves between the equal-division points and adjacent curves in this algorithm is sufficient to accurately calculate the performance of the micro-gas turbine under all working conditions.

The application provides a gas dynamic pressure thrust bearing for a micro gas turbine, which comprises a bearing seat, a bottom plate, a laminated gasket layer and a top foil assembly. The bottom plate is an annular base plate, and a plurality of locking notches are uniformly distributed along the circumference of the outer periphery of the bottom plate. The laminated gasket layer is arranged above the bottom plate and is composed of a plurality of fan-shaped gasket units arranged in an array along the circumference. A locking member capable of limiting the circumferential rotation of the laminated gasket layer is arranged in the locking notch. The top foil assembly is arranged above the laminated gasket layer and can form a dynamic pressure lubrication gap opposite a rotor thrust working surface on a rotor of the micro gas turbine. The top foil assembly is composed of a plurality of top foil pieces arranged in an array along the circumference, and adjacent top foil pieces are overlapped with each other through a cross-lapping structure to form a continuous load-carrying boundary. The bottom plate, the laminated gasket layer and the top foil assembly are sequentially stacked in the bearing seat. The thrust bearing cancels the traditional wave foil / support foil parts, can realize controllable wedge angle and pre-tightening, and has high assembly consistency.