145 results about "Electricity conservation" patented technology

The invention provides an intelligent aeration system and a control method, and the system comprises a multi-parameter monitoring module which collects parameters such as water depth, pressure, temperature, dissolved oxygen, inlet water ammonia nitrogen, chemical oxygen demand, and mixed liquid suspended solid concentration in real time; the data analysis and preprocessing module adopts a sliding window algorithm to carry out data cleaning and anomaly detection; the oxygen supply demand prediction module establishes an oxygen demand prediction model based on machine learning, and combines theoretical calculation and deep learning prediction; the multi-target intelligent control module adopts a reinforcement learning algorithm, establishes a Markov decision process model, and optimizes the processing effect and energy consumption at the same time; the execution control module is used for accurately adjusting the rotating speed of a fan, the opening degree of a valve and the running state of an aerator; and the system collaborative optimization module realizes linkage control of the aeration system and the carbon source adding system. The system has the functions of self-adaptive parameter adjustment, fault diagnosis and self-recovery, the DO control precision reaches 95% or above, the daily average electricity is saved by 9.7%, the NH4-N of effluent is reduced by 25%, and the annual comprehensive benefit exceeds 500,000 yuan.

The invention discloses an elevator control system with an electricity-saving quantity calculation function, which relates to the field of elevator control and comprises an energy-saving control module, a first electric energy sampling module, a second electric energy sampling module, a third electric energy sampling module, a fourth electric energy sampling module, a fifth electric energy sampling module, a battery module, a conversion module and an auxiliary power supply module, the mains supply and the battery module are used for supplying power to the auxiliary power supply module, the auxiliary power supply module supplies power to the energy-saving control module and the conversion module, the alternating-current side of the conversion module is connected with the second electric energy sampling module connected with the mains supply, and the direct-current side of the conversion module is connected with the battery module; the third electric energy sampling module is arranged between the joint of the conversion module and the battery module and the battery module, the fifth electric energy sampling module is arranged between the joint of the conversion module and the battery module and each elevator, and the fourth electric energy sampling module is arranged between each elevator and the mains supply; the first electric energy sampling module is arranged between the auxiliary power supply module and the commercial power. According to the invention, the saved total electric quantity can be calculated.

The invention relates to the technical field of electric energy meters, in particular to an intelligent electric energy meter with a power saving function. A communication module; the power supply module generates power according to the temperature difference between the surface temperature of the electric energy meter chip and the air temperature in the electric energy meter so as to provide electric energy for the communication module; and the control module is used for respectively adjusting the monitoring sampling mode of the detection module from a low-frequency sampling mode to a low-frequency full-frequency composite sampling mode according to the fluctuation ratio of the electrical load, and adjusting the data transmission mode of the communication module from a periodic transmission mode to an encrypted transmission mode based on the power generation voltage ripple of the power supply module. The signal transmission frequency band of the communication module is adjusted to be a low frequency band; wherein the alternating transmission frequency of single transmission of the periodic transmission mode is determined according to the average power generation voltage of the power supply module. The working stability of the electric energy meter is improved.

The invention relates to the technical field of electric power systems, in particular to a transformer area electric energy meter operation error evaluation method and device and a medium, and the method comprises the following steps: S1, data acquisition and processing; s2, constructing an electric energy conservation equation set between the general table in the transformer area and each user table; s3, solving the error rate ej of each user by using different strategy least square methods according to the data volume of the transformer area; S4, constructing a correlation algorithm model; s5, calculating an iteration error rate trend qj; s6, rechecking the sub-process; and S7, evaluating the running state of the electric energy meter of the transformer area low-voltage user. According to the method, a comprehensive multi-point composite model is formed through a multi-point composite model combination method of correlation, electric energy conservation, sub-process re-checking and the like in combination with a dynamic optimization strategy, so that a more comprehensive and accurate electric energy meter state evaluation method is provided, the actual state of the electric energy meter is evaluated more accurately, misjudgment is reduced, and the reliability of the electric energy meter is improved. And the adaptability and the flexibility of the system are improved.

The invention belongs to the crossing field of artificial intelligence and industrial automation, particularly relates to an aeration fan frequency conversion group control energy-saving method based on an intelligent optimization algorithm, and aims to solve the problems of high energy consumption, response lag and large equipment loss of a traditional control mode. According to the method, parameters such as dissolved oxygen, flow and pressure are collected in real time, a nonlinear optimization model with minimum energy consumption, accurate oxygen supply and minimum start and stop as multiple targets is constructed, an optimal rotating speed distribution scheme is solved online by adopting an improved particle swarm algorithm, and a smooth slope instruction output and closed-loop feedback correction mechanism is combined, so that the optimal rotating speed distribution scheme is obtained. And dynamic self-adaptive adjustment of fan group control is realized. The energy-saving efficiency is remarkably improved by 18%-25%, the annual electricity is saved by more than 800000 kilowatt-hour, meanwhile, the load unevenness is reduced to below 8%, fan start and stop is reduced by 60%, the service life of equipment is prolonged by 2-3 years, hardware does not need to be newly added, the deployment period is short, investment recovery is fast, and the method is successfully applied to multiple sewage plants.

The invention discloses an intelligent regulation and control system for heat supply and power saving of a heat pump. The system comprises a heat pump body control optimization module, a heat pump kernel regulation optimization module, a heat source dynamic switching module and a heat supply intelligent power saving module. The invention belongs to the technical field of heat pump power-saving intelligent regulation and control, a variable-capacity compression control module accurately regulates the load of a compressor through variable-capacity control of a bimodal slide valve, and more efficient energy utilization is achieved; the heat pump working condition optimization module adopts a multi-target dynamic optimization algorithm, comprehensively considers factors such as system efficiency, service life and noise, and realizes precise adjustment of working conditions; the multi-heat-source dynamic switching module intelligently selects an optimal heat source and realizes non-inductive switching through a game decision algorithm in combination with heat source entropy efficiency, an equipment health index and energy consumption cost, so that pressure fluctuation and system instability in a heat source switching process are reduced; the working efficiency of the heat pump system is effectively improved, the energy consumption is reduced, and the maintenance cost and the failure rate are reduced.

The invention relates to the technical field of power-saving control, and discloses an intelligent power-saving control method and system for building construction power utilization, the system comprises a data acquisition unit, a preprocessing unit, a mode analysis unit and a power-saving control unit, the data acquisition unit obtains multi-dimensional target data, builds a foundation for power utilization analysis, and provides a power-saving control system for building construction. The preprocessing unit is used for denoising voltage and current data by adopting a moving average filtering algorithm, calculating parameters of each acquisition point according to a filtering window, providing accurate data for subsequent work, detecting and correcting abnormal values of the voltage, current and power data, judging through a mean value standard deviation and processing according to a mode, so that the accuracy of a flow is enhanced; the mode analysis unit divides intervals according to a power threshold value, counts the operation time and the proportion of equipment, compares the operation time and the proportion with the threshold value, accurately determines a plurality of power utilization modes, and provides a basis for power saving strategy matching; and the power-saving control unit extracts parameters to generate a signal control device according to a power consumption mode matching strategy, thereby realizing an energy-saving target and scientific management and control.

The utility model provides a battery module, comprising: a holder comprising an upper side frame and a lower side frame, the upper side frame and the lower side frame being correspondingly fixed to form an accommodating bin; the battery pack comprises at least two battery cells and is fixed in the accommodating bin, and the multiple battery cells in the battery pack are electrically connected; the controller comprises a control panel and a control chip arranged on the control panel, and the controller is arranged on the periphery of the retainer; the positive electrode and the negative electrode of the control panel are electrically connected with the positive electrode and the negative electrode of the battery pack respectively. At least two battery cells are arranged in the battery module, so that the battery capacity is greatly increased, the endurance time is longer, and the battery module can continuously, stably and enduringly supply power; and after the battery module is assembled, the battery module is assembled to other equipment, so that the assembling time can be greatly shortened, and the assembling procedure can be greatly shortened.

The invention discloses an intelligent power saver, and relates to the technical field of power saving equipment. The intelligent power saver comprises a multi-phase winding transformer, a protection system, a deep learning optimization control system, a modular APF system, a multi-dimensional data display system, a transmission system, an energy management system and an energy optimization scheduling system. The intelligent power saver adopts an advanced three-phase electromagnetic balance technology and a deep learning optimization control system, can effectively improve the quality of electric energy, realizes the functions of harmonic suppression, three-phase balance, voltage stabilization and the like, uses electric equipment to operate in a better electric energy environment, and reduces the energy consumption of the equipment, thereby achieving a remarkable power saving effect, and being suitable for popularization and application. The modular APF system can effectively restrain harmonic current in a power grid, the total harmonic distortion rate of the power grid is reduced, and the influence of zero-sequence current on the power grid is reduced.

The present invention aims at the problem that the power saving control of the precipitator in the prior art only considers the analysis of the electrical characteristics in the electric field of each electric field and controls them independently, but rarely considers the operating status of the entire system of the precipitator. A method and system for energy saving optimization of coordinated control of an electrostatic precipitator is proposed, including determining a number of electrostatic precipitator chambers according to the overall goal, and determining the smoke control sub-goal of each electrostatic precipitator chamber, setting the operation mode and related control parameters of each high-voltage power supply according to the flue gas conditions, and differentially allocating the rated output power and working mode of the high-voltage electric field in the same electrostatic precipitator chamber. Under the premise of ensuring that the smoke control sub-goal remains unchanged, the output power of each high-voltage electric field is automatically adjusted, and each high-voltage electric field can work in coordination with each other. The present invention performs systematic global deployment control on each high-voltage electric field in the electrostatic precipitator, and each high-voltage electric field can work in coordination with each other, and the dust removal energy consumption utilization rate is higher, thereby greatly improving the energy saving efficiency of the entire electrostatic precipitator.

The embodiment of the invention provides a battery pack and an energy storage device, and the battery pack comprises a shell, a heat dissipation cavity and a battery compartment which are adjacent to each other are formed in the shell, and a battery cell is arranged in the battery compartment; the partition plate is arranged in the heat dissipation cavity and provided with an assembly hole; the boosting module is electrically connected with the battery cell; the heat dissipation support is arranged on the side, away from the battery bin, of the partition plate, the boosting module and the heat dissipation support are detachably connected to the side, facing the battery bin, of the heat dissipation support, and the boosting module penetrates through the assembly hole to be arranged on the side, facing the battery bin, of the partition plate; and the radiating fins are arranged on the side wall, far away from the battery compartment, of the radiating bracket. According to the technical scheme, heat dissipation and heat insulation can be both considered, the speed of conducting heat generated during operation of the boosting module into the battery bin can be effectively reduced, and temperature balance of all the battery cells is guaranteed.

The invention relates to the technical field of electrical variable measurement, and discloses an energy storage battery voltage sampling method and system, and the method comprises the steps: carrying out the unified numbering of a plurality of cells connected in series, and designing a mixed sampling structure which comprises a sliding combination sampling channel of two adjacent batteries and a block sampling channel of three adjacent batteries; according to the mapping relation between the sampling channel and the battery cell, constructing a sparse matrix representing the relevance between the combined voltage and the single voltage; based on the pseudo inverse operation of the sparse matrix, calculating the single voltage of each battery cell; combined voltage is periodically acquired through the analog front-end chip, and the processor calculates and uploads a single voltage result in real time. The problems of AFE sampling voltage lower limit limitation, monomer monitoring deficiency and low voltage precision insufficiency in the prior art are solved, and the purposes of sampling monomer voltage with high precision, breaking through hardware limitation and improving system reliability are achieved.

The invention relates to the technical field of power distribution, and relates to a hybrid power distribution intelligent power saving system based on electromagnetic balance. A dynamic load demand is generated through multi-source fusion of environment illumination data and people flow distribution data, and precise power supply and distribution regulation and control of an illumination link are realized; through a priority switching mechanism of the multi-power-supply cooperative access module, power supply combinations of commercial power, renewable energy sources and energy storage devices are matched in real time, and a hybrid power distribution power adaptation network is constructed; through real-time comparison of voltage, frequency and phase parameters and electromagnetic balance state scoring analysis, the problem of electromagnetic unbalance in a multi-power-supply cooperative state is judged; dynamic compensation is carried out through the harmonic frequency of the inductance-capacitance resonance circuit, and closed-loop adjustment and abnormal energy dissipation of electromagnetic balance are achieved. According to the scheme, the technical bottleneck of a traditional system in multi-power-supply dynamic switching and electromagnetic interference suppression is broken through, and a systematic solution is provided for energy efficiency optimization and stable operation of a distributed lighting scene.

The invention provides a virtual power plant distributed load response prediction method based on deep federated learning, and the method comprises the steps: constructing a tradeoff function of power-saving income and equipment start-stop loss according to the schedulable load range of a virtual power plant, defining the loss cost as the sum of equipment restart energy consumption and maintenance cost, and the income as the sum of electricity price difference and virtual power plant subsidy, optimizing the trade-off strategy by adopting a reinforcement learning algorithm to obtain a preliminary incentive distribution scheme; issuing the optimized excitation scheme parameters to each industrial enterprise node participating in the virtual power plant, collecting and judging whether enterprise response willingness feedback meets a preset participation rate threshold value or not, and obtaining a response willingness evaluation result; and monitoring the supply and demand balance state of the virtual power plant in real time, obtaining a power grid load demand curve and enterprise actual response data, predicting a short-term supply and demand gap, judging whether an excitation mechanism needs to be adjusted or not, if so, returning to re-optimize excitation distribution, and if not, generating a supply and demand balance scheduling instruction.

The invention belongs to the technical field of amorphous alloy three-dimensional roll iron core power saving, and discloses an intelligent power-saving protection method for an amorphous alloy three-dimensional roll iron core. According to the method, the current harmonic distortion rate, the magnetic field non-uniform coefficient and the temperature gradient of the amorphous alloy three-dimensional roll iron core are collected, then the relevance model of the operation state parameters and the electric energy loss indexes is constructed, the equipment operation state can be comprehensively reflected, the relation between the parameters and the loss can be accurately revealed, loss prediction and energy-saving optimization are achieved, and the method is suitable for popularization and application. And equipment maintenance and performance improvement can be assisted. According to the invention, power-saving demand analysis is carried out in different regions, the power-saving potential regions are identified, dynamic regulation and control are carried out in a targeted manner, power utilization characteristics of different regions can be accurately positioned, blindness of a uniform energy-saving strategy is avoided, accurate resource putting is realized, and the effectiveness of energy-saving measures is improved; the strategy can be adjusted in real time according to the power utilization change of each region, the energy utilization efficiency is improved, and the overall energy consumption is reduced.

The invention relates to the technical field of power distribution cabinet sets, in particular to an intelligent moisture-proof power distribution cabinet set which comprises a cabinet body shell and a sealing door body installed on the front side face of the cabinet body shell, a condensation type dehumidifier located below the sealing door body is installed on the front side face of the cabinet body shell, and a fixing plate is fixed in the cabinet body shell. A fixing plate is arranged in the cabinet body shell, an installation guide rail frame used for installing electrical elements is installed above the fixing plate, a multi-stage moisture absorption assembly is connected in the cabinet body shell below the fixing plate, a flow guide pipe used for conveying air for ventilation and heat dissipation is installed in the rear portion of the fixing plate in a penetrating mode, and a temperature sensor is fixed to the inner wall of the upper portion of the cabinet body shell. According to the intelligent moisture-proof power distribution cabinet group, moisture in air can be further removed, so that the moisture can be prevented from entering the power distribution cabinet group, the moisture-proof and waterproof performance of the whole power distribution cabinet group can be improved, the consumption of electric energy can be reduced, and the intelligent power distribution cabinet group can well save electricity and energy when being used for an intelligent power grid.

The utility model relates to the technical field of power equipment, and discloses a special power-saving cabinet for a motor, which comprises a power distribution cabinet, a placement frame is fixedly arranged in an inner cavity of the power distribution cabinet, an electronic component is fixedly arranged on the front surface of the placement frame, and a heat dissipation mechanism is fixedly arranged in the inner cavity of the power distribution cabinet. The heat dissipation mechanism comprises a heat dissipation frame, a heat dissipation motor, a rotating shaft, heat dissipation blades, a fixing frame, a first heat dissipation pipe and a second heat dissipation pipe, the heat dissipation motor drives the rotating shaft to rotate, and the rotating shaft drives the heat dissipation blades to rotate; the heat dissipation blades inject external air into the first heat dissipation pipe and the second heat dissipation pipe through the heat dissipation frame and the heat dissipation grooves, then the external air is blown into the power distribution cabinet through heat dissipation holes of the first heat dissipation pipe and the second heat dissipation pipe, the heat dissipation holes of the first heat dissipation pipe blow air to the back face of the electronic component, heat dissipation is conducted on the back face of the electronic component, and heat dissipation is conducted on the back face of the electronic component. Heat dissipation holes of the second heat dissipation pipe blow air to the front face of the electronic component.

The utility model proposes a modular house dry connection structure, including embedded parts embedded in the side wall, preset parts set on the adjacent side wall and a connection mechanism for connecting the embedded parts and the preset parts, the connection mechanism including a connection part passing through the preset part and connected to the embedded parts and a locking part locking the preset part. The utility model can modularize the prefabricated concrete isolation room by setting the embedded parts and the connection mechanism, and adopts dry construction and assembly, which not only saves water, electricity, materials and the environment; but also does not require too many tools for workers on the construction site, which is more convenient to manage, and is easy and quick to install and put into use quickly; it also reduces construction waste and can be recycled repeatedly.

The present application relates to the technical field of heat pump, and provides a control method and device of a solar heat pump unit and the solar heat pump unit, the solar heat pump unit comprises a water tank, a heat pump module and a solar module for supplying heat to the water tank, the control method of the solar heat pump unit comprises: obtaining a setting mode of the solar heat pump unit; controlling the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit; wherein the solar heat pump unit has multiple setting modes, and in the multiple setting modes, the degree of user's demand for hot water in the water tank is different. The present application combines the heat pump and the solar energy as a heat source, has multiple operating modes, can achieve the purpose of saving electricity, and can match the corresponding operating mode according to the setting demand of the user, has a wide range of applications, thereby effectively improving the user experience.

The invention relates to a standard curing box temperature and humidity control system based on light hydrogen, which comprises a light hydrogen module, a strong and weak current control module, a temperature and humidity module, a water circulation module, an intelligent control module and a curing recording module, and is characterized in that the light hydrogen module is connected with the strong and weak current control module and the water circulation module, and the strong and weak current control module is connected with the temperature and humidity module and the intelligent control module; the temperature and humidity module is connected with the intelligent control module, the water circulation module and the maintenance recording module. According to the standard curing box, clean energy is used in the whole-process curing process, and carbon emission in the building material test block curing process is effectively reduced; water and electricity are saved, and economic benefits are remarkable; the system is accurate and intelligent, gives full play to the heat release and humidification efficiency of hydrogen power generation, adopts a neural network intelligent control method, provides an intelligent regulation and control instruction for greenhouse humidity control, and achieves accurate and intelligent control.

The invention discloses a novel power saving system, which relates to the technical field of power saving, and is characterized by comprising a special multi-winding transformer T1, power electronic equipment and a capacitor, the special multi-winding transformer T1 is electrically connected with the power electronic equipment and the capacitor; the specially-made multi-winding transformer T1 comprises two windings; the secondary side of one winding is electrically connected with the power electronic equipment, provides a channel for the control voltage and is used for controlling the output voltage; and the other winding is electrically connected with the capacitor to provide a channel for controlling the impedance network to form the impedance network to be connected with the load in parallel. The technical problem to be solved by the invention is to provide a novel power-saving system, which combines an electromagnetic balance principle and a power electronic technology, realizes the function of simultaneously controlling output voltage and load impedance network balance in real time through a specially-made multi-winding transformer, further improves the energy-saving space, and also solves the problem of power interference of a power supply at the same time.

The invention relates to an electricity-saving measuring method and device for a high-voltage frequency converter, a medium, equipment and a program product, and relates to the technical field of electricity saving, and the method comprises the steps: obtaining the power frequency accumulated electric quantity of each load power frequency operation under various loads before the high-voltage frequency converter of a primary fan of a power generation system is transformed, and obtaining a plurality of power frequency accumulated electric quantities; obtaining the variable-frequency accumulated electric quantity of each load in variable-frequency operation under the various loads after the high-voltage frequency converter is transformed, and obtaining a plurality of variable-frequency accumulated electric quantities; and according to the plurality of power frequency accumulated electric quantities and the plurality of frequency conversion accumulated electric quantities, determining the power saving rate and the power saving quantity of the transformed high-voltage frequency converter. The electricity-saving quantity and the electricity-saving rate of the high-voltage frequency converter are calculated according to the electricity consumption before and after the high-voltage frequency converter is transformed in the electricity-saving technology, the accuracy of calculating the electricity-saving quantity and the electricity-saving rate of the high-voltage frequency converter can be improved, and calculation errors are reduced.

The invention discloses an industrial power-saving system and method based on multi-frequency-band conflict avoidance and energy feedback, and relates to the technical field of industrial power-saving systems.The method comprises the steps that a power grid fundamental wave synchronizing signal is obtained through a zero-cross detection circuit, an integrating circuit is input to generate a slope time-base signal, and the time-base signal is used for controlling the triggering moment of a high-frequency modulation pulse; the method comprises the following steps: modulating a pulse to intensively act on wave crest and wave trough areas of an AC voltage waveform, exciting an LC resonant circuit connected to a DC side of an electric energy conversion device by the modulating pulse to enable the LC resonant circuit to enter a quasi-resonant state in a phase interval, and actively releasing energy to a load by an energy storage capacitor; the system is controlled to be switched on preferentially, power supply competition for a main power supply is formed, main current output is correspondingly reduced on the premise that load power is not changed, energy conservation and consumption reduction are achieved, and the system further improves electric energy quality and operation stability through unified clock synchronization, phase out-of-sequence control, energy local circulation and impedance frequency band avoidance.

The invention provides a control method for realizing waste heat recovery of a circular cooler, which comprises the following steps of: calculating cooling air quantity required by a high-temperature section according to a waste gas temperature set value of the high-temperature section, a heat calculation value of a sintered ore block at a 1 # monitoring point, a heat calculation value of the sintered ore block at a 2 # monitoring point and a waste gas temperature of a low-temperature section; according to the waste gas temperature set value of the medium-temperature section, the heat calculation value of the sinter blocks at the second monitoring point and the heat calculation value of the sinter blocks at the third monitoring point, the cooling air volume needed by the medium-temperature section is calculated; and according to the heat calculation value of the sinter blocks at the 3 # monitoring point and the set average ore temperature and the heat set value of the sinter blocks at the 4 # monitoring point, the cooling air volume required by the low-temperature section is calculated. According to the system, full utilization of waste heat of the high-temperature section, the medium-temperature section and the low-temperature section and the normal cooling effect of the sinter in the circular cooler are achieved, and the triple purposes of controllable sinter cooling, waste heat recycling and frequency conversion electricity saving are achieved.

The utility model relates to the technical field of power-saving cabinets, and discloses a voltage-stabilizing power-saving cabinet with electric energy recovery, compensation and temperature control functions, which comprises a body, an exhaust pipe penetrates through the outer wall of the body, an electromagnetic valve is arranged on the inner wall of the exhaust pipe, and a movable groove is formed in the outer wall of one end, provided with the exhaust pipe, of the body. The inner wall of the movable groove is rotationally connected with a wind shield, and a resistor is fixedly assembled at the end, away from the wind shield, of the body. Through arrangement of the body, the first wire, the second wire, the resistor, the isolation layer, the heating device, the controller and the temperature sensor, the resistance of a copper pipe in the resistor is reduced when the temperature is reduced in the operation process of the power-saving cabinet, so that redundant current in a circuit is communicated with the heating device, the heating effect is achieved, and the service life of the power-saving cabinet is prolonged. And the current is fed into the operation area in the body through the air feeding pipe, so that the effect of recycling the current is achieved, and the energy utilization rate of the power-saving cabinet is improved.

The utility model relates to the technical field of electrical connection, in particular to an electricity-saving and energy-saving terminal electrical comprehensive treatment protection module, which comprises a central control module used for data processing and circuit integral control, and an enhanced active power filter module used for adjusting three-phase imbalance, the bus capacitor module is used for balancing current of each phase through charging and discharging, and the enhanced active power filter module comprises a sampling module used for detecting voltage and current of a system side in real time; and the compensating current generating circuit is used for controlling the on-off of the three-phase circuit to absorb energy from the power grid and mutually convert the energy among the three-phase circuit so as to enable the three-phase current to reach a balanced state. According to the utility model, real-time detection of system side current can be carried out, on-off of the three-phase circuit is controlled, energy is absorbed from a power grid and is mutually converted among the three-phase circuit, so that three-phase current reaches a balance state, and the like, thereby eliminating total harmonic distortion of the power grid with low harmonic, compensating reactive power, improving power factor of the power grid, and reducing power consumption. And an energy-saving node effect is achieved.

To provide an entire building air conditioning system capable of appropriately reducing an amount of electric energy in a situation in which power saving is required in a building.SOLUTION: There is provided an entire building air conditioning device for conditioning air in an air conditioning chamber 14 and conveying the conditioned air in the air conditioning chamber 14 to a plurality of air conditioning object spaces. Power saving processing for the entire building air conditioning device is performed on the basis of a reduction request for reducing use of electric power in which air in the air conditioning chamber 14 is not conveyed to all of the plurality of air conditioning object spaces, but is conveyed only to a specific air conditioning object space after the reduction request, thereby achieving an expected objective.SELECTED DRAWING: Figure 1

The utility model discloses a power-saving card, which comprises an accommodating module and a light wave sensing component. Therefore, the power-saving card can be arranged on the switch, surge current and pulse voltage generated at the moment of circuit connection when the switch is started can be suppressed by using the light wave induction assembly, extra electric energy loss caused by overlarge fluctuation of current waveform is further reduced, and the current can be effectively applied by an electric appliance system connected with the rear end of the switch. And the effect of saving electric energy is achieved.

The invention relates to a low-temperature control method and a battery pack, the battery pack comprises a shell, a battery pack and a control panel, the battery pack and the control panel are mounted in the shell, a plurality of cells are connected in series and / or in parallel to form the battery pack, and the battery pack is electrically connected with the control panel; the battery pack further comprises a temperature sensing unit, a heating unit and a temperature control unit which are connected to the control panel, the heating unit is installed on the periphery of the battery cell, the periphery of the battery pack is defined as an outer contour, and at least part of the heating unit is attached to the outer contour; and the heating unit receives the low-temperature heating signal and directly transmits heat energy to the battery cell. The heating unit is arranged in the battery pack to directly heat the battery cells, so that the adaptability of the battery pack in a low-temperature environment is improved, and the heating efficiency is high; meanwhile, the heating pad of the heating unit is wound on the periphery of each battery cell, does not occupy extra space, has the performance of thermal effect, vibration reduction, insulation and the like, is simple in assembly mode and does not need to be welded for many times.

The invention relates to the technical field of switch cabinet pressure relief, in particular to an emergency pressure relief intelligent lock switch cabinet. The cabinet comprises a cabinet body and a pressure relief cover plate arranged at the top of the cabinet body, and further comprises a buffer flow guide mechanism and a gas pre-collection mechanism, and the gas pre-collection mechanism is used for blowing pre-collected gas to the buffer flow guide mechanism when high pressure occurs in the cabinet body; the buffer flow guide mechanism is located in a lower buffer opening and an upper buffer opening which are formed in the side wall of the cabinet body; in the emergency pressure relief intelligent lock switch cabinet, the first buffer flow guide piece in the lower buffer port and the second buffer flow guide piece in the upper buffer port can be automatically opened when high voltage occurs, on one hand, the phenomenon of local high voltage in the cabinet body is reduced, and on the other hand, the safety of the switch cabinet is improved. The first buffer flow guide part and the second buffer flow guide part can be matched with gas after being opened to guide the gas in the cabinet body, so that the frequency of fault shutdown is reduced, and the purpose of saving electricity is achieved.