158results about How to "Reduce electricity bills" patented technology

The invention belongs to the technical field of street lamp illumination, and in particular mainly relates to a street lamp energy-saving and managing system based on internet of things. The system mainly consists of a main monitoring center, a remote terminal unit (RTU) and wireless sensor nodes, wherein the wireless sensor node which is responsible for detecting and controlling single lamp street to operate and executing a lamping switching-on and switching-off operation by receiving an instruction sent by the RTU is arranged on each street lamp, the wireless sensor nodes are connected with the RTU through a GPRS (General Packet Radio Service) module, and the RTU arranged at a transformer workstation is respectively connected with the main monitoring center, a server and a display device through Internet. The street lamp energy-saving and managing system disclosed by the invention can realize illumination as required, high efficiency and energy saving and fine management, solves the problems generally existing in the current street lamp monitoring management system and has the advantages of wide application range and suitability for popularization.

The invention provides a multi-unit device and a method for synchronically charging and discharging an accumulator. A main controller is respectively connected with a rectification (inversion) unit, a DC-DC converter unit, and an upper computer. The main circuit structure of the main controller comprises a front circuit part and a back circuit part. With the space vector pulse width modulation (SVPWM) technique used in the front circuit part of the inventive device, the power factor is approximately 1 in the charging mode and approximately -1 in the discharging mode, so as to improve the energy utilization efficiency, therefore, reducing the capacity requirement of an isolation transformer, and costs of other hardware. Meanwhile, the harmonic wave content is decreased and the pollution to a power grid is reduced. The device is in parallel connected with a plurality of independent two-way DC-DC converters, when a plurality of groups of battery units are synchronically charged or discharged, the residual electricity released by certain batteries can be charged into other batteries without passing through the power grid, so as to improve the service efficiency of the battery residual electricity and save electricity expenditure.

A system to manage the storage of energy to, and the release of energy from, an energy storage system with such energy being generated from one or more renewable sources of energy, traditional sources of energy or the electric grid, or a combination of any or all of these sources, resulting in a reduction of the power demand from the electric grid of a user of the system and/or of the high consumption charges during peak usage times of a user of the system.

The invention discloses a household electricity programming system and method based on time-of-use price and stepped price forms. The system is characterized by comprising a user electricity metering module, a wireless data communication and transmission module, a calculation and analysis module, a visual output and feedback module, and an equipment control and execution module. The system and method can fully consider the real electricity requirement and energy saving target of each residential user from the aspects of time-of-use price and stepped price, thereby improving electricity efficiency and maximizing electricity saving effects.

The invention relates to the field of street lamp control, in particular to a novel intelligent street lamp controller, which solves the problems that the prior street lamp control method is not precise enough in the time of turning on/off street lamps, poor in energy saving effects, insufficient in informationization intelligence, and the like. The controller comprises a single chip microcomputer, a multi-sensor array, a clock generation circuit and an execution circuit, wherein the output end of the multi-sensor array is connected with the signal input end of the single chip microcomputer through an amplifying-filtering-processing circuit; the execution circuit comprises a bidirectional thyristor of which a control pole is connected with the signal output end of the single chip microcomputer; the output end of the bidirectional thyristor is serially connected with a relay; and a normally-opened contact of the relay is serially connected with a power supply loop of the street lamps. The controller has the advantages of high reliability, complementation, strong anti-interference ability, reasonable structure, energy conservation, environmental protection, controllability and maintenance convenience, provides a foundation for realizing the networked intelligent control on urban street lamps, and is applicable to the intelligent control on street lamp systems of big/medium/small cities, medium/small towns, residential communities and all types of schools.

The invention relates to a method for leaching earthy oxide copper ores, in particular to a method for microorganism-pelleting heap leaching, and belongs to the technical field of hydrometallurgy. The method is characterized in that: the earthy ores are directly screened, and fine ores with the granularity of 1.5mm are added with strain acid water and cement to prepare ore pellets with the diameter between 10 and 20 mm for heap leaching, wherein the mass concentration of sulphuric acid in the strain acid water is 3 to 10 percent, strains are mixed strains of Thiobacillus ferrooxidans, Thiobacillus thiooxidans and Leptospirillum ferrooxidans, the mass ratio of the three is 4.0-5.5:2.5-3.5:1.5-2.5, the bacterial load ratio is 105 and 108/ml, the cement amount is 15 to 30kg/ton of ores; and leachate in the leaching is sprayed for closed cycle production. The method has the advantages of low investment, low energy consumption, good leaching effect, and no discharge of closed cycle, solves the problem of leaching the low-grade earthy oxide copper ores (including sulphide and oxide blend ores) by microorganism heap leaching, and overcomes the defects of long flow and high cost of agitation leaching.

The invention provides a home energy management method, which comprises the following steps: a basic data obtaining step: obtaining basic data according to historical data; a load modeling step: carrying out load modeling according to the basic data and obtaining a load model; a target function definition step: according to the load model, defining a target function; a comprehensive evaluation index definition step: according to the target function, defining a comprehensive evaluation index; a constraint condition application step: applying a constraint condition to the comprehensive evaluation index; and a model solution step: carrying out solution calculation on the comprehensive evaluation index applied with the constraint condition to obtain regulation and control data. The invention also provides a home energy management system capable of realizing the home energy management method above. The home energy management system control method can be directly applied to different home load scenes, reduces power cost while considering home electricity utilization comfort level, does not need to adjust parameters of the target function according to concrete scenes, and has higher practicality.

The invention discloses a polishing machine for blanks of brake pads, which mainly comprises a conveying chain mechanism, brake pad limiting grooves, a fixed base plate, thrust pad baffle plates, a polishing steel wire sand wheel, a dust collector hood, a sand wheel motor, a limiting groove adjustment threaded rod, a steel wire sand wheel adjustment sliding way, a sand wheel motor position adjustment base, a brake pad sliding way and the like. After being manually placed to the front end of the polishing machine, the blanks of the brake pads are driven to move forwards by the plurality of thrust pad baffle plates driven by drive chains, and are ground and polished by the steel wire sand wheel when passing by a part below the steel wire sand wheel rotating at a high speed; and the processed brake pads are continuously driven to move forwards by the thrust pad baffle plates, and automatically fall into a sliding way at a tail end and slide into a transit box when the thrust pad baffle plates motion circumferentially with conveying chains by gears.

The invention belongs to the technical field of permanent magnetic materials, and particularly relates to a UV (ultraviolet) solidified bonding magnet. The UV solidified bonding magnet comprises the following raw materials according to a mass ratio: 90-98.5 percent and one of bonding NdFeB magnetic powder, Sr ferrite magnetic powder or Ba ferrite magnetic powder; 1-8 percent of UV solidified resin mixture; 0.1-1 percent of coupling agent; and 0.05-0.4 percent of stearate lubricant. The invention further provides a preparation method of the UV solidified bonding magnet. According to the preparation method, the problems of lowering magnet property due to a high temperature, oxidization, heat demagnetization and the like in a traditional solidification method are solved, and the preparation method has the advantages of fast solidification speed, little pollution, energy-saving and the like.

A cold accumulating agent in the form of gel is prepared from attapulgite clay, urea, high-hydroscopicity resin and water through proportional mixing and stirring. Its advantages are high effect and no environmental pollution.

The present invention demonstrates a highly distributed demand response optimization and management system for real-time (DROMS-RT) power flow control to support large scale integration of distributed renewable generation into the grid. The system is a cloud-based platform that reduces critical peak power safely and securely. The arrangement is provided with a control and communications platform to allow highly dispatchable demand response (DR) services in timeframes suitable for providing ancillary services to the transmission grid. The services are substantially more efficient than other forms of ancillary service options currently available to manage the intermittency associated with large-scale renewable integration.

The invention relates to the new energy technology field and discloses a wind-solar-electricity storage communication base station standby power supply system capable of achieving energy saving and consumption reduction. The system comprises a solar cell panel, a wind driven generator, a wind-solar complementary controller, a public power grid and a backup lithium battery pack. The solar cell panel and the wind driven generator are electrically connected with the wind-solar complementary controller. The wind-solar complementary controller is electrically connected to a -48VDC direct current bus. The public power grid is electrically connected with a three-phase watt hour meter through a commercial power input switch, is electrically connected to a rectifier through a rectifier switch, andis output to the -48VDC direct current bus through an anti-reflux diode. The backup lithium battery pack is electrically connected to a charging current limiting module through a battery switch, the charging current limiting module is electrically connected with a Hall current sensor, and the Hall current sensor is electrically connected with the -48VDC direct current bus. In the technical scheme,solar energy, wind energy and an energy storage battery can be effectively used for interactive power supply, a energy utilization rate of the base station is increased, and electric energy consumption is greatly reduced.

The four-in-one appliance combining water heater, drinking water machine, air conditioner and refrigerator has a total power of 330 W. In the four corners of refrigerator, there are four water storing and condensating exchangers, and in the condensator, water absorbs the heat to raise refrigerating efficiency. Warm water of 40-50 deg.c may be used in washing dishes, washing clothing and bathing; and hot water of 70-80 deg.c may be filtered before being used in cooking rice and making tea and coffee, serving as water heater and drinking water machine. The evaporator and heat conducting board are fixed together for absorbing heat, serving as refrigerator. There is cold air passage opposite to the cold storage chamber to cool air and the cold air is exhausted, serving as cooling air conditioner. The present invention makes it possible to eliminate air pollution, heat island effect, water pollution and water deficiency.

The invention discloses a measurement and control method for a three-phase four-wire metering device wiring detector. Through comparing a detection phase voltage and a detection current with a measurement phase voltage and a measurement current in aspects of magnitude and phase difference, whether a three-phase four-wire metering device is in a wiring fault and can not accurately measure three-phase power is determined, electric quantity correction is further carried out, complex hidden false wiring can be automatically detected, correction electric quantity and return electric quantity are calculated, and false alarm is reduced.

The invention discloses an oblique shoemaking cloth treatment apparatus, which comprises a frame, heating plate assemblies, a motor and a conveying assembly, wherein the heating plate assemblies are arranged obliquely, and comprise an upper heating plate and a lower heating plate; the upper heating plate is embedded in an L-shaped plate of the frame; the lower heating plate is embedded between two vertical plates of the frame; conveying rolls and intermediate rolls of the conveying assembly are mounted between the heating plate assemblies; rotating brushes and rotating brush shafts are mounted at the back ends of the heating plate assemblies; gears of the rotating brush shafts are meshed with gears of an output shaft of the motor. According to the oblique shoemaking cloth treatment apparatus, the conveying assembly and the heating plate assemblies, all of which are oblique, are arranged, and through such an arrangement, cloth can be automatically conveyed downwards through the conveying rolls due to a gravity factor; the motor is not needed to be loaded; the electric power can be effectively saved; further, the structural weight can be lightened.

The invention relates to an exponential moving average-based air conditioning load demand response method. The method comprises the following steps of (1) obtaining real-time electricity price P<rt> of each electricity price updating cycle; (2) calculating average electricity price P<avg> within n past electricity price updating cycles and an electricity price standard deviation sigma by using a sliding data window according to the real-time electricity price in each electricity price updating cycle; (3) sampling the real-time electricity price according to a set sampling cycle, filtering the sampled real-time electricity price by using an exponential moving average algorithm to obtain filtered electricity price P<ema>; (4) calculating an updated temperature set value T<set> of air conditioning equipment according to the average electricity price P<avg>, the electricity price standard deviation sigma and the filtered electricity price P<ema> obtained in the steps (2) and (3); and (5) adjusting the temperature of the air conditioning equipment by the updated temperature set value T<set>. Compared with the prior art, the exponential moving average-based air conditioning load demand response method has the advantages that power grid impact is reduced, the power quality of a power distribution network is improved and the like.

The invention relates to a bidirectionally luminous runway edge lamp, which comprises a lamp shade and a lamp holder. A radiating lamp bracket for fixing a light source is arranged inside the lamp shade, and is connected with the lamp holder; the lamp also comprises at least one yellow light-emitting diode (LED) light source which is fixed on the radiating lamp bracket, and a corresponding white LED light source; an inclined angle of 2 to 5 degrees is formed between emergent rays of the white LED light source and the yellow LED light source and the same plane; an inclined angle between the two emergent rays is more than 90 degrees and less than 180 degrees; a first Fresnel lens is arranged on a light path of the white LED light source; and a second Fresnel lens is arranged on a light pathof the yellow LED light source. The runway edge lamp is simple in structure and can save energy; meanwhile, the service life of the LED light sources is 50,000 hours, and the problem that light sources in an airport are frequently replaced is solved.

The invention discloses a power utilization management system and a power utilization management method. The system is an informationized system applied in electric charge management. Aim at branches and electric charge data which are owned by enterprises, the invention provides the informationized and intelligentized management analysis technology to fulfill the aims of improving management efficiency and reducing operation cost. The power utilization management system comprises a receipt analyzing module, an electric charge calculation module, an electric charge exception sensing module and an electric power expert diagnosis module, wherein the receipt analyzing module is used for analyzing an electronic receipt and storing the analyzed result into a database; the electric charge calculation module is used for calculating electric charges according to the last power rate; the electric charge exception sensing module is used for sensing whether a bill note of the current period is normal or not; and the electric expert diagnosis module is used for suggesting the optimal power utilization types and contract capacity.

The invention provides a peak and valley socket and belongs to the technical field of electricity utilization metering equipment. The peak and valley socket solves the problems that an existing socket used for valley electricity is too complex in structural design and single in function, detects existing practically cannot be overcome, and the demand of users cannot be met. According to the peak and valley socket, a peak and valley electricity electrifying diverter switch, a time changing device and a time controller are arranged in a socket shell, wherein the time changing device can change a summer peak and valley electricity utilization period and a common peak and valley electricity utilization period in foreign countries or in summer and correspondingly change set time in a timing module, the time controller is used for setting and controlling electricity supplying time, the peak and valley electricity electrifying diverter switch is electrically connected with a power source and a socket copper core, the time changing device is electrically connected with the timing module in the peak and valley electricity electrifying diverter switch, and the time controller is electrically connected with a converting module in the peak and valley electricity electrifying diverter switch. The peak and valley socket has the advantages that peak electricity outage and valley electricity electrification can be achieved, time converting is accurate, and the summer period and the common period can be separated.

The invention discloses a public institution electric power requirement side management system and an electric power quality prediction method, wherein the public institution electric power requirement side management system comprises the components of a data source layer, a network layer, a data layer, a supporting layer and an application layer. The data source layer is used for realizing public institution energy data acquisition and performing information calculation, analysis and processing on acquired field data; and furthermore the data source layer reflects operation condition of the public institution energy field and is provided with a man-machine interaction interface. The network layer is used for public institution energy data transmission and information communication. The data layer is used for public institution energy data storage. The supporting layer is used for performing comparative analysis on data information which is transmitted by the data layer, realizing intelligent searching and providing a developing tool and a standard for an intelligent control standard. The application layer supplies an application service to a user. The public institution electric power requirement side management system and the electric power quality prediction method have an advantage of improving electric power utilization efficiency of public institution electric power consumption equipment.

The invention discloses a steel belt elevator which comprises a lift car, a counter weight and a permanent magnetic gearless traction machine connected with a power supply. The lift car is connected with the permanent magnetic gearless traction machine and the counter weight through a steel belt. The steel belt comprises a plurality of steel ropes arranged in parallel and polymer material layers wrapped on the plurality of steel ropes. Moreover, the weight difference between the lift car in a full load condition and the counter weight is more than half of the rated loading capacity of the elevator. Preferably, the permanent magnetic gearless traction machine is also connected with a power grid through an energy regeneration frequency converter. The steel belt elevator takes the permanent magnetic gearless traction machine as a power source and can reduce electricity using charge by 40%. In addition, the steel belt of a composite structure is adopted, so that the steel belt elevator not only is light in weight and can reduce total traction load, but also is tough, not prone to deformation, convenient to maintain and capable of enabling a traction machine group and the steel belt to run quietly so as to lower noise disturbance. In addition, the key components are long in service life and convenient to maintain, so that comprehensive operating cost is further lowered.