748results about "Energy industry" patented technology

The invention provides a customized energy-saving air conditioner control method and device for industrial process requirements, and is applied to the technical field of data processing. According to the method, electromagnetic interference and vibration noise are eliminated through Kalman filtering, and a standardized process-environment-energy consumption correlation sequence is generated; and converting the three-dimensional process load map into a three-dimensional process load map, and establishing an individualized air conditioner dynamic load prediction model in combination with heat and humidity characteristics of a scene through fluid dynamic simulation and self-adaptive grid division. Extracting process priority factors to construct an adjustment matrix, calculating an air conditioner parameter combination under target energy consumption, extracting energy consumption characteristics, dividing standard exceeding risk levels, and constructing a multi-dimensional characteristic matrix; and comparing real-time data with historical data to identify abnormity, and generating an energy consumption optimization correction factor. Users are grouped according to enterprise conditions, key factors are screened by using a gradient boosting tree, a personalized energy-saving control model is constructed by fusing multiple information, target parameters are output, and a real-time adjustment instruction and a time-phased energy-saving strategy are generated in combination with a time sequence.

The invention discloses an on-site monitoring system for the performance of an elastic loose type anchorage system suitable for deep-sea buoys, and particularly relates to the field of deep-sea monitoring. The on-site monitoring system auxiliary comprises a central processing module, wherein the output end of the central processing module is separately connected with an information display module,an information storage module, an auxiliary recovery module and a driving module, and the input end of the central processing module is separately connected with a power supply module, a monitoring module, a correction module and a positioning module. According to the on-site monitoring system for the performance of the elastic loose type anchorage system suitable for the deep-sea buoys, the auxiliary recovery module is arranged, air bags are installed at a plurality of node positions on the anchorage system, a booster pump in a pressurization unit is used, outside air is conveyed into a floating ball unit through a pipeline unit, so that the retractable air bags are enabled to bulge upwards to float, the whole anchor system is directly floated in sections, people conveniently recycle theanchorage system greatly, the workload during the recycling process is reduced, and the practicability is high.

The invention provides a compressor energy-saving operation control method and system based on reinforcement learning, and belongs to the technical field of compressor control. The method comprises the steps that multi-dimensional data in the operation process of a compressor are collected through a multi-parameter sensor network; preprocessing the multi-dimensional data to obtain target feature data; inputting the target characteristic data into a state prediction model, and predicting an operation parameter prediction value in a future control period; splicing and fusing the target feature data and the operation parameter predicted value, and constructing state representation of the reinforcement learning model; inputting the state representation into a target reinforcement learning model based on a near-end strategy optimization framework to obtain an optimal control action; safety verification is conducted on the optimal control action based on preset compressor safety operation constraints, and an execution instruction is determined; and adjusting operation parameters of the compressor based on the execution instruction. According to the compressor energy-saving operation control method and system based on reinforcement learning, the energy-saving performance and the operation stability of the compressor are improved.

The invention relates to the technical field of heat energy recovery, in particular to an efficient multistage waste heat recovery and reutilization combined heat and power generation system which comprises a heat output calculation module, a temperature difference mode analysis module, a heat exchange efficiency analysis module, an optimal parameter identification module, a condenser management module and a condensate water recovery control module. According to the method, temperature, flow and pressure data of multiple positions are collected in real time, the heat fluctuation trend under multiple input conditions is accurately predicted, a basis is provided for follow-up optimization decision making, and through dynamic prediction of a temperature difference mode, the heat exchanger inlet and outlet temperature and the mutual relation between multiple equipment working parameters are combined, so that the heat exchange efficiency is improved. Real-time evaluation of the heat exchange efficiency is achieved, construction of a working model of a heat exchanger is combined, optimal working parameters under multiple temperature gradients are accurately recognized, optimization of working parameters of a condenser and condensate water recovery equipment is combined, the energy utilization rate of the combined heat and power generation system is increased, energy consumption is reduced, and resource waste is reduced.

The invention provides a large reciprocating compressor continuous stepless regulation system and method based on intelligent control, and the method comprises the steps: building a continuous stepless regulation model according to a load change trend and process fluctuation characteristics, and determining an initial parameter set of a regulation instruction through a preset load range regulation threshold value and a dynamic response speed requirement; according to the non-equilibrium stress adjustment scheme, dynamically adjusting operation parameters of a compressor execution mechanism, monitoring the abrasion state of key components through a real-time feedback control technology, and determining operation data of the components after stress equilibrium; and the operation data of the parts after stress balance are obtained, the operation parameters of the compressor are subjected to secondary calibration through an intelligent control system in combination with an energy efficiency improvement target, and the optimized optimal pressure ratio state parameters are obtained.

The utility model provides a full-bridge LLC resonant converter control circuit, which is characterized in that a full-bridge LCC resonant converter is provided with a frequency conversion controller, a phase shift controller and a mode switching module, the input end of the mode switching module is connected with an input voltage detection module, and when the input voltage of the full-bridge LCC resonant converter is lower than a preset threshold value, the phase shift controller is connected with the mode switching module. When the input voltage of the full-bridge LCC resonant converter is larger than or equal to a preset threshold value, the variable frequency controller controls a switching tube in the full-bridge LCC resonant converter to work through switching of the switch, and when the input voltage of the full-bridge LCC resonant converter is larger than or equal to the preset threshold value, the phase shift controller controls the switching tube in the full-bridge LCC resonant converter to work through switching of the switch. The full-bridge LLC resonant converter has the advantages that the variable-frequency controller and the phase-shift controller are arranged in the control circuit at the same time, switching of control modes can be achieved based on judgment of the magnitude of input voltage and through a simple switching circuit, the full-bridge LLC resonant converter has the advantages of variable-frequency control and phase-shift control, and the problems of voltage fluctuation and instability are solved.

The invention belongs to the technical field of industrial control, and particularly relates to a brushless direct current motor high-efficiency control method and system based on an FOC algorithm, and the method comprises the steps: superposing high-frequency sine disturbance in a voltage instruction, extracting a response component, achieving the online identification of the equivalent impedance of a motor, and dynamically solving and updating the estimated values of resistance and inductance; and correcting d-axis and q-axis voltage feed-forward items in real time by using the updated parameters, and correspondingly adjusting a current loop proportion and an integral gain. The method can adapt to the time-varying characteristics of motor parameters in an industrial field, so that the accuracy of feed-forward compensation and the stability of current loop bandwidth are effectively guaranteed, and the robustness and the control precision of a control system under complicated industrial working conditions such as variable temperature and variable load are remarkably improved; and the requirements of high-end industrial equipment on high performance and high reliability of the motor driving system are met.

The invention relates to the technical field of industrial automation, and discloses a self-adaptive dynamic pressure regulation energy-saving system and method based on pneumatic equipment, and the system comprises a state monitoring module which is used for constructing an operation state matrix of the pneumatic equipment; the pressure control module is used for generating a dynamic pressure control vector of the pneumatic equipment; the risk judgment module is used for calculating a real-time operation risk coefficient of the pneumatic equipment; the hierarchical regulation and control module is used for establishing a hierarchical regulation and control strategy set of the pneumatic equipment; the control feedback module is used for generating a self-adaptive control parameter sequence of the dynamic voltage regulation instruction and the state early warning instruction; and the scheme output module is used for integrating the dynamic pressure regulating instruction, the state early warning instruction, the hierarchical regulation and control strategy set and the self-adaptive control parameter sequence and outputting a self-adaptive dynamic pressure regulating and energy saving scheme of the pneumatic equipment. The energy utilization efficiency and the operation stability of the pneumatic equipment can be improved.

The invention discloses an energy and low carbon cooperative regulation and control method and system based on reinforcement learning, and relates to the technical field of energy management and low carbon control, and the method comprises the steps: building an initial data set through real-time collection of energy consumption data, carbon emission data and key operation parameters in industrial production; preprocessing the data by adopting a multivariable correlation analysis and data standardization technology; constructing a dynamic optimization model based on a reinforcement learning algorithm, and adaptively adjusting operation parameters of production equipment by taking energy utilization efficiency maximization and carbon emission minimization as targets; and a closed-loop feedback mechanism is established, the regulation and control effect is monitored in real time, model parameters are optimized, and continuous efficient low-carbon operation of the system is ensured. The technical problem that energy efficiency and environmental protection are difficult to collaboratively optimize in a traditional industrial energy management method is solved, and the method is suitable for intelligent low-carbon production in high-energy-consumption industries such as chemical engineering and metallurgy.

The invention discloses a control method and system for energy efficiency optimization of a workshop air conditioning system of a constant-temperature and constant-humidity factory. The control method comprises the steps that a load prediction model is trained, and the constant-temperature and constant-humidity factory is partitioned to set importance weights for all air conditioners; based on a reinforcement learning algorithm, multi-objective optimization is carried out on an air conditioning system composed of all air conditioners, the reinforcement learning algorithm takes adjustment of operation parameters of all the air conditioners as actions, and the actions of each iteration and environment parameters, detected in real time, of a constant-temperature and constant-humidity factory workshop are input into a load prediction model; the predicted cold load, the predicted heat load and the predicted dehumidification amount of each air conditioner are obtained, and the performance coefficient of each air conditioner is calculated; and weighting the performance coefficient of each air conditioner according to the importance weight, and constructing a reward function for multi-objective optimization by combining a weighting result and the environment parameters, detected in real time, of the constant-temperature and constant-humidity factory workshop. According to the invention, the optimal optimization of the constant-temperature and constant-humidity factory among the lowest energy consumption, the most stable control and the highest precision is realized.

A steam single-screw compressor testing system is characterized in that the steam single-screw compressor testing system is composed of a steam pocket (5) and a liquid-gas separator (3), an electric heater (12) and an inverted-T-shaped steam distribution mixer (13) are installed in the steam pocket (5), and the steam pocket (5) is communicated with a steam single-screw compressor (1) through a steam return pipeline (6); the steam single-screw compressor (1) is communicated with a gas inlet of the liquid-gas separator (3) through a high-pressure steam outlet pipeline (2), high-pressure steam separated by the liquid-gas separator (3) is communicated with a gas inlet of the inverted-T-shaped steam distribution mixer (13) installed in the steam pocket through a low-pressure steam pipeline (4), and the bottom of the inverted-T-shaped steam distribution mixer (13) is located below the waterline of the steam pocket (5). And small holes are fully distributed, so that high-temperature steam and water in the steam pocket are uniformly mixed for heat transfer, and heat energy is recycled. The air conditioner is simple in structure, the compressor is started without electric heating, and energy and water resources are saved.

The invention provides an intelligent valve management and control platform based on the Internet of Things, and relates to the technical field of industrial automation control, and the intelligent valve management and control platform based on the Internet of Things comprises a data collection module, an edge calculation module, an Internet of Things communication module, a cloud platform management module, an intelligent diagnosis module and a self-adaptive control module. Through a mode of combining multi-source sensor data acquisition, edge calculation and cloud intelligent analysis, real-time monitoring of a valve state, accurate prediction of a fault and self-adaptive optimization of a control strategy are realized, compared with a traditional valve control system, the problems of response lag, high maintenance cost, data isolation and the like are effectively solved, and the system is suitable for large-scale popularization and application. The method can be widely applied to multiple industrial fields such as petroleum, chemical engineering and water affairs, the automation level, production efficiency and safety of industrial production are remarkably improved, the operation cost of enterprises is reduced, and the method has wide application prospects and huge economic value.

The invention discloses a step disturbance influence resistant micro-grid on-grid and off-grid state detection method and system, and the method comprises the steps: carrying out the filtering and normalization processing of a discrete time sequence, and obtaining a standard signal; identifying mutation points in the standard signal, and constructing a mutation point index set; screening out a point column meeting a time closeness feature from the mutation point index set, and constructing a continuous candidate section; performing stability analysis, monotonicity judgment and fallback trend identification on each continuity candidate section to judge whether the continuity candidate section is a step change section or not; whether a real continuous pulse sequence is formed or not is judged according to the time interval, the amplitude change rate and the amplitude peak-valley characteristic for the remaining sections excluding the step change section in the continuous candidate sections; and outputting the disturbance type of each continuity candidate section. According to the method, the accuracy of disturbance identification and the robustness of system control are improved, and the operation safety and the control decision reliability of the system under the complex disturbance background are guaranteed.

The utility model discloses a heat recovery and utilization system and a micro-pressure steam heat energy unit, and an efficient heat energy recovery and reutilization loop is constructed through equipment such as an evaporator, a screw compressor, a condenser, an expansion valve and a flash tank. The evaporator absorbs heat from heat source water and evaporates a refrigerant into low-pressure gas, then high-temperature hot water is generated through the compression and condensation process, meanwhile, the flash tank is used for converting the high-temperature hot water into micro-pressure steam so as to meet the requirement for low-pressure steam in the system, by efficiently recycling and utilizing waste heat, the dependence of the system on external steam and electric power is reduced, and the energy consumption of the system is reduced. Therefore, energy efficiency is improved, operation cost is reduced, and energy waste and environmental influence are reduced.

The invention relates to an energy efficiency prediction method and system based on a three-phase asynchronous motor. According to the method, an equivalent circuit model based on a motor physical mechanism is constructed, and theoretical current and ideal loss are generated to serve as benchmark references; voltage and current signals of actual operation of the motor are collected in real time, and vector subtraction is carried out on actually measured current and theoretical current to obtain difference current signals; blind source separation processing under physical constraint is applied to the difference signal, independent components representing different physical loss sources are decoupled, and additional power of the independent components is quantified; and the ideal loss, the additional loss and the output power are fused to realize dynamic accurate prediction of the real-time energy efficiency of the motor. According to the scheme, through the synergistic effect of differential driving and a physical mechanism, penetrability diagnosis of loss roots such as power grid interference and mechanical degradation is achieved, and the self-adaptive precision of energy efficiency prediction under variable working conditions is improved more remarkably.

The invention provides an air compressor unit energy-saving scheduling optimization method and system based on SSA-LSTM dynamic load prediction, and relates to the technical field of industrial energy efficiency management. The method comprises the following steps: decomposing gas load data to perform characteristic analysis; firstly, parameters with physical significance are qualitatively screened based on the working principle of the air compressor, and then multi-dimensional parameters are selected as input through Pearson correlation coefficient analysis; in combination with shipyard production data characteristics, LSTM is adopted to carry out dynamic load prediction, SSA optimization hyper-parameters are introduced, and an SSA-LSTM load prediction model is constructed; sSA-LSTM load prediction is taken as key input, constraint conditions of multiple time scales of air compressors are integrated, and an air compressor unit optimization scheduling model is systematically constructed. According to the method, the space-time heterogeneity and the dynamic fluctuation characteristics in the working condition data are effectively captured through the SSA-LSTM model, efficient global tuning is realized, and the prediction precision and the calculation efficiency are remarkably improved; the method is suitable for a high-dynamic, real-time and accurate load prediction industrial scene represented by a shipyard, and provides key support for scheduling decision making.

The invention relates to the technical field of steel plant air compression, and discloses a steel plant air compression system universal energy-saving and stable air supply control method which comprises the following steps that S1, the total air consumption demand Q of a steel plant compressed air pipe network is monitored in real time; s2, executing a load segmentation control strategy based on the total gas consumption demand Q; s3, loading and unloading operation of the power frequency air compressor and rotation speed adjustment of the variable frequency air compressor are controlled in a coordinated mode through a central energy-saving control unit; and S4, a pressure buffer tank is arranged on an output pipeline of the variable-frequency air compressor and used for stabilizing the pressure of the pipe network. The total air consumption demand Q is divided into two sections, the power frequency machine is started and stopped according to the N + 1 principle, and the frequency converter is supplemented for continuous quantity supplement, so that the system can operate only with the minimum necessary unit in any load scene, energy waste caused by over-start and over-stop in a traditional scheme is avoided, and overall reduction of compressed air production energy consumption is realized.

The invention belongs to the technical field of vacuum pump control, and relates to a production line vacuum pump energy-saving control method based on vacuum degree feedback and a PI algorithm. A stability index is constructed based on the vacuum change rate, the effective deviation and the vibration intensity to divide the system state, and the proportion and integral gain of the PI algorithm are dynamically adjusted according to the system state, the effective deviation and the temperature influence coefficient, so that the control parameters can adapt to different states and temperature interference of the system. The problem of response lag or overshoot of a traditional fixed parameter PI algorithm during working condition fluctuation is solved, and the working condition adaptability is improved; and finally, overshoot is avoided by adjusting an integral term, energy efficiency optimization constraints are superposed, and on the premise that surge and temperature safety threshold values are met, unnecessary high-frequency operation is limited, and redundant energy consumption under a stable working condition is reduced.

The invention provides a control method and device, a controller, a computer readable storage medium and a micro-grid, and is applied to the technical field of micro-grids, so as to improve the power angle stability after a certain branch in the micro-grid breaks down. The control method can be executed through a controller in the micro-grid. The controller can firstly obtain a plurality of simplified branch transient power transmission capability indexes corresponding to a plurality of branches of the micro-grid. And then, when the duration that the minimum value in the transient power transmission capacity indexes of the plurality of simplified branches is smaller than a preset index threshold value is longer than a preset duration, controlling the network construction type energy storage to execute emergency control operation. Wherein the emergency control operation comprises a first operation and a second operation. The first operation is to reduce the amplitude of the output voltage frequency and the amplitude of the output voltage phase of the grid-forming energy storage. And the second operation is to reduce the output power of the network construction type energy storage. On the basis, the power angle stability after a certain branch in the micro-grid breaks down can be improved through control over network-forming type energy storage.

The off-peak electricity heat storage cold and hot steam combined supply system comprises an electric boiler and a water supplementing device, the steam output end of the electric boiler is connected with a first heat storage tank, a second heat storage tank and a steam output pipe, and a first valve is installed between the steam inlet end of the first heat storage tank and the steam output end of the electric boiler; a second valve is installed between the steam inlet end of the second heat storage tank and the steam output end of the electric boiler. The system has the beneficial effects that through cooperation of the electric boiler, the first heat storage tank, the second heat storage tank, the steam output pipe and the hot water output pipe, steam can be generated through the electric boiler in the valley electricity period, and the steam is released in the peak electricity period to meet the production requirement; and the first heat storage tank and the second heat storage tank alternately store heat and release steam and hot water, and sustainable production is met, so that the electric energy cost of a factory is effectively reduced, the peak-valley difference of a power grid can be balanced, and the energy utilization rate is increased.

The invention relates to the technical field of motor driving, and discloses a brushless motor non-inductive FOC driving method and device, and the method comprises the steps: collecting a first three-phase stator current and a bus voltage of a brushless motor, and calculating a rotor position estimation value; performing coordinate transformation on the first three-phase stator current to obtain a first d-axis actual current and a first q-axis actual current, and calculating a first d-axis current error and a first q-axis current error; calculating a d-axis first-order integral value, a d-axis double-integral accumulated value, a q-axis first-order integral value and a q-axis double-integral accumulated value, and constructing a d-axis double-integral sliding mode surface and a q-axis double-integral sliding mode surface; according to the method, a d-axis compensation voltage instruction is generated based on the d-axis double-integral sliding mode surface, a q-axis compensation voltage instruction is generated based on the q-axis double-integral sliding mode surface, the d-axis compensation voltage instruction and the q-axis compensation voltage instruction are applied to the brushless motor, the problem of magnetic field orientation deviation caused by position estimation lag in non-inductive FOC driving is solved, and the output efficiency of the motor is improved.

The invention provides an intelligent optimization control method for a factory power station building cold source system, and the method comprises the steps: firstly, building an energy-saving optimization control model for the power station building cold source system through the combined application of a cold source system mechanism and factory actual operation big data; secondly, deeply analyzing a refrigerator operation mechanism and an energy consumption expression, determining the property of a problem to be optimized, and determining an equation or inequality constraint condition according to inherent attributes of refrigerator equipment and an industrial field environment; and secondly, designing a particle swarm optimization algorithm sharing knowledge archives, creating a learning optimization model to guide the direction of swarm intelligence search, calculating and solving to obtain the decoded optimal branch chilled water inlet / outlet water temperature, and finally providing the optimal branch chilled water inlet / outlet water temperature to a control part, so that the COP (Coefficient Of Performance) index is remarkably improved.

m lower conversion circuits (101 to m) configuring an LLC resonant converter that operates by on and off operations of an upper switch element (QH) and a lower switch element (QL) together with a resonant inductor (Lr) is included. n upper conversion circuits (10m+1 to m+n) configuring an LLC resonant converter in which a primary winding (T1) and a resonant capacitor (Cr) operate together with a resonant inductor (Lr) by the on and off operations of the upper switch element (QH) and the lower switch element (QL) is included. A lower adjustment inductor (Lpd) connected in parallel with the primary windings (T1) of the m lower conversion circuits (101 to m) and an upper adjustment inductor (Lpu) connected in parallel with the primary windings (T1) of n lower conversion circuits (101 to m).

The utility model relates to the technical field of waste heat utilization of centrifugal air compressors, in particular to a tar residue treatment system. The centrifugal air compressor is provided with N stages of compressors, N is larger than or equal to 2, and the N stages of compressors are connected with the N-1 efficient heat exchangers in series through pipelines. An outlet of the high-efficiency heat exchanger is connected with an inlet pipeline of the organic working medium-hot water heat exchanger, an outlet of the organic working medium-hot water heat exchanger is connected with an inlet pipeline of the high-efficiency heat exchanger to form a circulating water system, and the water replenishing pipeline is connected with the circulating water system; an outlet of the organic working medium-hot water heat exchanger is connected with an inlet pipeline of a working medium expansion machine, an outlet of the working medium expansion machine is connected with an inlet pipeline of a working medium condenser, and an outlet of the working medium condenser is connected with an inlet pipeline of the organic working medium-hot water heat exchanger to form an organic working medium circulating system; the working medium expander is connected with a generator pipeline. The waste heat of the centrifugal air compressor can be effectively utilized, and the current situation of insufficient power supply of a factory can be relieved.

A multiphase LLC resonant converter of N phases (N represents an integer equal to or more than two) causes N resonant converters connected in parallel to a direct current power supply to operate with a phase difference of 360° / N. One of the resonant converters includes a lower adjustment inductor connected in parallel with primary windings of the lower conversion circuits. The one of the resonant converters includes an upper adjustment inductor connected in parallel with primary windings of upper conversion circuits. Outputs including high potential output terminals and low potential output terminals of the lower conversion circuits and the upper conversion circuits star connected at neutral points via a second resonant capacitor are connected.

A Surface-affixed, Storm-Resistant Containment Unit involves a shelter structure, with internally-mounted photovoltaic solar panels, and movable doors which may be ‘closed’ to protect the photovoltaic solar panels from storm-related damage, e.g. hail, extreme wind and airborne debris. When weather conditions improve, the movable doors may be ‘opened’, allowing sunlight to strike the undamaged photovoltaic solar panels, and renewable energy production to resume. These Storm-Resistant Containment Units may be installed, and electrically connected in multiples to comprise a storm-resistant, commercially-sized, renewable power generating station (or ‘Micro-Grid’) for use in geographic areas prone to severe storms and hurricanes. Such storm-resistant, commercially-sized, power generation station may be advantageously applied at existing ‘Brown-Field’ industrial sites that have existing, unused electrical-grid infrastructure.

The utility model relates to the technical field of motor speed regulation, in particular to a direct current motor speed regulation circuit. The speed regulation circuit comprises an input connector CON1 used for accessing a DC input voltage; the output connector CON2 is used for connecting a direct current motor; the step-down chip ME3148 is used for converting the direct-current input voltage into adjustable output voltage, and the step-down chip comprises a VI N pin 8, an SW pin 2, an FB pin 4, a VC pin 7, a CS pin 5 and a GND pin 3. The direct-current motor speed regulation control circuit is simple in structure, can realize wide-range and high-precision speed regulation control only by adjusting a single potentiometer, has the characteristics of low cost and high reliability while ensuring the speed regulation performance, and is suitable for direct-current motor control scenes with higher requirements on speed regulation range and precision.

The utility model discloses a coil pipe type steam boiler, which relates to the technical field of coil pipe type steam boilers, and comprises a boiler body, a burner arranged at the upper end of the boiler body, an energy saver arranged at the rear end of the boiler body, a chimney arranged at the upper end of the energy saver, a steam-water separator arranged on one side of the boiler body, and a steam-water separator arranged on the other side of the boiler body. A control box is arranged on one side of the steam-water separator, a water supply system is arranged on the other side of the furnace body, an air duct pipeline is arranged at one end of the burner, an air supply fan is arranged at one end of the air duct pipeline, a base is arranged at the bottom of the furnace body, and the air supply fan is fixed to the base. According to the scheme, the problems that an existing steam boiler mostly adopts a boiler barrel structure, high-temperature steam is not prone to being discharged, explosion is prone to being caused, and safety is low are solved.