10results about How to "Smoothing fluctuations" patented technology

This invention discloses a power-led computer-computer collaborative control strategy method and system. First, a unified computer-computer coupling model is established, standardizing and quantifying the information attributes and energy consumption characteristics of computing tasks. Based on this model, through multi-timescale collaborative optimization, a control strategy is generated to guide the computing load through time-shifting and spatial migration, enabling it to proactively adapt to the grid operating state, achieving peak shaving and valley filling, promoting the consumption of new energy sources, and achieving rapid frequency response. The corresponding system adopts a three-layer collaborative architecture of "center-edge-local," including a central collaborative decision-making platform, regional computing power aggregation agents, and local resource control units, forming a closed-loop control from global optimization decision-making to precise local execution. This invention significantly improves the safety and economy of grid operation while ensuring the quality of computing power services, and provides an innovative technological path for the computing power industry to reduce energy costs and improve its green level.

The application provides a virtual power plant frequency modulation and peak regulation method, comprising the following steps: acquiring a wind and light load prediction curve, market price prediction information and a power grid next-day peak regulation demand curve, establishing a first planning model to obtain each controllable resource base point power plan and energy storage SOC plan of each preset time period of the next day; after the next day, every preset time period is executed: acquiring short-term wind and light load prediction data, actual operation state of each resource and real-time market price information, establishing a second planning model to correct each controllable resource base point power plan and energy storage SOC plan of the current time period, and determining a frequency modulation parameter of the current time period; according to the corrected each controllable resource base point power plan and energy storage SOC plan of the current time period, instructing corresponding equipment to execute; if a power grid frequency modulation instruction is received, adjusting the output of the frequency modulation resource according to the frequency modulation parameter of the current time period. The method solves the limitation problem of the virtual power plant in frequency modulation and peak regulation.

The invention discloses a damper real-time performance evaluation and health diagnosis system and method. Current traditional damper monitoring faces many limitations. The system comprises a sensor array module, a data acquisition and preprocessing module, a data fusion processing module, a performance evaluation module, a health diagnosis module, an early warning module and a communication and storage module. The data fusion processing module is used for performing automatic fusion processing on the preprocessed data to generate optimized fusion data; the performance evaluation module is used for calculating various performance indexes of the damper through the fused data; the health diagnosis module diagnoses the fault type of the damper according to the fused data and the performance evaluation result, analyzes the fault reason and evaluates the risk level of the fault; the early warning module is used for issuing early warning information; and the communication and storage module is used for data transmission and storage. According to the invention, the accuracy, real-time performance and reliability of damper monitoring are improved.

The invention discloses a control method and device for internal combustion power low NOx emission, and belongs to the technical field of tail gas aftertreatment. A flow sensor, an oxidation catalysis unit OC, an ammonia ejector, a nitrogen oxide storage unit NSRU, a nitrogen oxide concentration sensor and a selective catalytic reduction unit SCR are sequentially arranged in the exhaust direction. NOx in the tail gas firstly flows through the OC unit, NO in the tail gas is oxidized into NO2 by utilizing the oxidation characteristic of the OC unit, so that the concentration of NO2 in the tail gas is increased, and the NOx with the changed concentration ratio enters the NSRU unit; if the molar ratio of NH3 to NOx in the current NSRU region is lt; if 1, NO2 is partially converted into nitrate to be stored; if the molar ratio of NH3 to NOx in the current NSRU area is gt; if 1, the nitrate stored in the NSRU can be converted into NO2 to be released. Therefore, under the condition that the ammonia injection amount of the NSRU is constant, if the NOx of the incoming flow fluctuates in different heights, the NSRU adsorbs the NOx fluctuating in the forward direction and releases the NOx fluctuating in the negative direction, the stability of the flow of the NOx entering the SCR unit is improved, and efficient conversion of the NOx is achieved.

The invention relates to a pressure control method, device and equipment based on an ethylene unloading working condition of a VAC device, a medium and a program product. The method comprises the following steps: determining a current working condition according to process characteristics; automatically switching a pressure control target according to the working condition and the pressure parameter; according to different working conditions, the pressure control points of the storage tank are dynamically adjusted in stages; reading an actual measurement value of a pressure variable, setting algorithm detection interval time, and obtaining a pressure change rate through differential calculation; the pressure control point serves as a target value, the actual pressure measurement value serves as a feedback value, the deviation between the target value and the feedback value is calculated, the deviation is processed through a PID algorithm, and an opening instruction of the ethylene backflow flow valve is output. Therefore, the operation condition of the device can be automatically identified, and a corresponding control strategy is matched. Automatic control over the pressure of the ethylene buffer tank in the whole ethylene unloading process is achieved; ethylene backflow is used as a core pressure control means, and the adjusting amplitude of the pressure control valve of the ethylene buffer tank is reduced.

The invention relates to the technical field of power system control, and discloses a double-winding generator and energy storage parallel system and a grid-connected control method thereof. Aiming at the problems of large impact current, unsmooth synchronization, discontinuous mode switching and the like in the traditional grid connection, the method maintains stable off-grid operation through multi-stage closed-loop control, verifies voltage frequency deviation after receiving a grid connection instruction, progressively synchronizes a phase by adopting a dynamic step length strategy, and closes a grid connection switch at a power grid voltage zero crossing point after fine calibration of a phase-locked loop, so that the grid connection is realized. And the operation mode is adaptively switched after grid connection. The system comprises a system unit comprising a battery module, a double-winding generator module and the like, and a control unit comprising a measurement module, a phase-locked loop module, a phase synchronization module and the like. The method realizes non-impact smooth grid connection, effectively inhibits voltage and current oscillation, improves system reliability and electric energy quality, and is suitable for distributed energy, micro-grid and emergency power supply scenes.

The utility model relates to an offshore wind power miniature energy storage device for storing energy through underwater compressed air, and aims to solve the problems that offshore wind power is unstable and electric energy is difficult to store and improve the stability of electric power transmission of an offshore wind power unit. The front end of the device is connected with an air compressor, power is supplied to the air compressor and an air bag in an energy storage device is inflated when the generating capacity of an offshore wind turbine generator is sufficient, an electronic one-way valve of compressed air energy storage equipment is opened when wind energy is weak, the air bag is compressed by water pressure to release compressed air, and potential energy of the compressed air is converted into mechanical energy through an expansion machine; and then the generator is driven to generate electricity and transmit electric energy to a power grid. By adopting the device, the fluctuation of offshore wind power can be effectively stabilized, the grid connection performance of the wind power and the stability of power transmission are improved, powerful technical support is provided for large-scale development and utilization of the offshore wind power, and the device has a wide application prospect.

The embodiment of the invention provides a smart energy scheduling system for an expressway. The smart energy scheduling system comprises a distributed energy supply unit, an energy storage unit, an energy consumption load unit, a sensing and predicting unit and a central scheduling control unit. According to the system, traffic flow prediction and vehicle trajectory data are fused through the perception and prediction unit, and the short-term load demand is accurately predicted; and the central scheduling control unit introduces a flexible capacity participation factor based on a traffic flow fluctuation degree, dynamically restrains the scheduling range of the energy storage unit, and establishes a multi-objective optimization model to perform rolling optimization calculation. According to the invention, collaborative optimization scheduling of distributed energy, stored energy and flexible load is realized, the operation economy, power supply reliability and renewable energy consumption capability of the highway energy system are effectively improved, and the adaptive capability of the system to deal with traffic flow uncertainty is enhanced.

This invention proposes a method and system for controlling the absorption capacity of a radiant air conditioning microgrid. The method determines the allowable thermal and humidity dynamic elastic range for the radiant terminal surface based on collected data, combined with a human thermal comfort model and a dew point temperature dynamic evolution model. This dynamic elastic range is then transformed into equivalent virtual energy storage capacity, maximum absorbable charging / discharging power, and maximum sustainable discharge duration, based on building thermal capacity characteristics and the variable operating condition performance curves of the heat pump unit. According to the received power scheduling command, within the constraints of the thermal and humidity dynamic elastic range, the optimal control sequence for each device parameter in the radiant air conditioning system is solved using a rolling optimization algorithm. Based on this optimal control sequence, the system controls each device in the radiant air conditioning system, achieving a shift from passive response to active guidance. This improves the safety and reliability of source-load interaction and enhances the reliability of the radiant air conditioning microgrid absorption capacity control.

This application provides a method and apparatus for waste heat recovery from high-temperature solid materials. The apparatus includes a support frame with a rotary heat exchange box mounted on it. One end of the rotary heat exchange box is connected to a power unit, which is fixed to one side of the support frame. A rotating shaft is rotatably mounted on the other side of the support frame and connected to the other end of the rotary heat exchange box. A material fixing device is fixed inside the rotary heat exchange box. In this application, the power unit drives the rotary heat exchange box to rotate at a low speed, which in turn drives the material fixing device to rotate at a low speed. This causes continuous and omnidirectional relative motion and contact renewal between the heat exchange medium and the solid material, thereby achieving dynamic, uniform, and efficient direct contact heat transfer. This fundamentally solves the problems of low heat exchange efficiency and uneven cooling caused by poor contact in static filling.