388results about How to "Run economy" patented technology

The invention discloses a microgrid real-time energy optimizing and scheduling method in a parallel running mode. The method comprises the following steps of: firstly, dividing 24 hours in a day into a peak period of time, a general period of time and a trough period of time according to the load condition of a large power grid; and then, monitoring the working state of an accumulator in a microgrid in real time in the real-time process of the microgrid and adopting different energy optimizing strategies according to different periods of time and different working states of the accumulator soas to confirm the active power output of various schedulable micro power supplies, the charging and discharging power of the accumulator and scheduling instructions of the active power interactive with the power grid and the passive power of a passive adjustable power supply in the microgrid. The microgrid suitable for the invention comprises a reproducible energy generator, the schedulable micropower supplies and the accumulator. The invention not only can improve the economy and the reliability of the microgrid, but also can help the great power grid to cut peaks and fill troughs and is favorable to prolonging the service life of the accumulator.

The invention relates to a medium and low voltage distribution network energy efficiency evaluation method based on accurate load measurement data. A complete set of whole-process comprehensive energy efficiency evaluation method for a static and dynamic distribution network is constructed in a distribution network energy efficiency evaluation system. Through the method, various attribute elements of the distribution network can be scientifically, integrally and comprehensively reflected. The system is clear in theory. Compared with the traditional energy-saving and loss-reduction modification measures only based on a quarter line loss method and a sweeping approach, the system has more scientificalness and pertinency and provides a brand new thinking and method for energy efficiency evaluation and energy-saving modification for the distribution network. The invention has a valuable reference to specific distribution network energy efficiency evaluation in various regions, makes pointed references to the distribution network planning and modification construction and also helps distribution network operating personnel master the operating condition of distribution network energy efficiency. Scientific and reasonable distribution network construction and modification projects can be instructed and arranged in actual evaluation and planning works, reliable and economic operation of the distribution network is ensured, and huge economic benefits are created.

The invention discloses a two-stage coordinated optimization and control-based running method of a combined cooling heating and power supply type microgrid. The running method comprises the steps of 10) performing inter-day rolling dispatching of the combined cooling heating and power supply type microgrid, in which optimal dispatching is performed by taking minimum running cost of the combined cooling heating and power supply type microgrid as an optimal target and combining forecast renewable energy generation power and load demand according to a running constraint condition of the system, and rolling output of each equipment and electricity purchase or sale quantity from a power grid are determined; and 20) building a real-time dispatching module of the combined cooling heating and power supply type microgrid, correcting an inter-day rolling dispatching result by taking dispatching fluctuation penalty-based minimum running cost of the combined cooling heating and power supply type microgrid as the optimal target and combining the renewable energy generation power and a load demand real-time value according to a real-time running constraint condition, and determining real-time output of each equipment in the combined cooling heating and power supply type microgrid and an electricity purchase or sale quantity real-time value. By the running method, the purpose of running economy and stability of the combined cooling heating and power supply type microgrid is achieved.

A first buttery supplies power to an electrical load of a vehicle when an engine is in a normal operation. A second buttery supplies power to the electrical load of the vehicle when the engine is in an economical operation. A voltage regulator regulates voltages of the first buttery and the second buttery. A current limiter limits a current value flowing from the voltage regulator to the second battery to a limiting value. An engine stopping unit stops the engine when a first predetermined condition is established. An activator starts the engine when a second predetermined condition is established. A current detecting unit detects the current value when a second battery is charged. A changing unit changes a limiting value between a first limiting value and a second limiting value which is higher than the first limiting value according to the detected current value in a case where the voltage of the second battery is no more than a second predetermined value and the voltage of the first battery is no less than a first predetermined value.

The invention discloses an electromagnetic looped network reactive power ring current optimal control method based on a flexible looped network controller, and belongs to the technical field of electric power system analysis, operation and control. According to a high-low voltage electromagnetic looped network system, the flexible electric power transmission technology and the optimal load flow calculation method are used for optimally controlling the reactive power distribution electromagnetic looped network reactive power ring current optimal control method based on the flexible looped network controller in an electromagnetic looped network. The method includes the steps that first, the topological structure and the valve level control strategy of the looped network controller are determined; second, the reactive ring current optimized objective function and the constraint condition of the flexible looped network controller are deduced; third, a cataclysmic genetic algorithm is used for optimizing the objective function; fourth, based on an original current converter level control strategy, the current control regulation strategy is added. The electromagnetic looped network reactive power ring current is restrained, and thus the electromagnetic looped network can operate more economically and stably.

The invention relates to a device and method for fire coal management and combustion strategy optimization. At present, a device and method for fire coal management and combustion strategy optimization do not exist, wherein the device and method for fire coal management and combustion strategy optimization can effectively solve the safety problem caused by variable coal quality conditions to a unit. The device for fire coal management and combustion strategy optimization is characterized by comprising a coal quality on-line analysis device, a communication interface, a local monitoring device, a network optical fiber, a first real-time database interface, a real-time database server, a second real-time database interface and a fire coal management and combustion strategy optimization system server, wherein the coal quality on-line analysis device has the function of real-time and on-line measurement on the ash content, the moisture content and the heat quantity of coal, the coal quality on-line analysis device is connected with the local monitoring device through the communication interface, the local monitoring device is connected with the first real-time database interface, and the real-time database server is connected with the fire coal management and combustion strategy optimization system server. The device and method for fire coal management and combustion strategy optimization effectively solve the problem that economy and safety of the unit are reduced due to the fact that the running adjustment mode is poor when coal quality is variable.

This invention relates to a combined control device for integrated instruments and electric appliances composed of a shell with a faulty display window and labels, an electronic control circuit, an intelligent expanding module circuit, a moving and static contactor component with a current sensor at the side of a static contact bridge, an iron core, a coil and a spring, which realizes multiple kinds of protections and fault display by the electronic control circuit and has the function of power saving, a photo electric isolation technology is applied for its high voltage drive and low voltage signal circuit and the I/O expanding interface and an intelligent expansion module are applied to enrich the function of the display and control of the instrument.

The invention belongs to the environmental protection technical field and control field and specifically relates to a sewage treatment process energy-saving optimization control method based on a quantum genetic algorithm. The method is characterized in that, with effluent quality, aeration, pumping energy consumption and sludge and waste treatment cost being taken into overall consideration, quantum state vector expression is introduced to genetic encoding to express chromosomes, and evolutionary search is achieved by utilizing quantum gate effect and update so as to optimize operating cost of sludge and waste treatment, backflow and aeration energy consumption and the like of a sewage treatment system; and aeration intensity of an air blower and sludge pump backflow amount are adjusted by a fuzzy neural network controller in real time based on a set value after optimization so as to realize optimization control of the sewage treatment process, thereby reducing the operating cost while ensuring the effluent quality, reducing the sewage treatment cost and promoting efficient and stable operation of a sewage treatment factory.

The invention discloses a method for realizing early warning and positioning of malfunctions for a power cable network, which comprises the following steps of: starting an optical time-domain reflectometer (OTDR) by a manual or an automatic way to test an appointed fiber to acquire optical cable test data, wherein connecting lines of all sampling points form an OTDR curve of a fiber chain; forming an upward step index reflective event by reflection of light caused by an optical connector, fractures and ending points; forming a downward step index non-reflective event by bending and splicing the optical fiber which increases the attenuation of the optical fiber; finding the step index points of the curve through data analysis and determining the optical fiber event points such as optical fiber head end, tail end, optical fiber connector and splicing points and the like; determining the operation state of the optical fiber through comparison with reference data and the change of attenuation data; and sending the early warning information when the data change exceeds the early warning threshold. The invention can be used for emergency early warning and positioning when the optical fiber network degrades and is in emergent cases so that the anti-damage capacity of the communication network is strengthened and the occurrence of optical fiber blockage is reduced to a great extend.

The invention relates to a micro-grid multi-master-slave mixed control method based on improved droop control. A plurality of distributed power supplies DGs in a micro-grid are controlled by adopting a master-slave control method, wherein the DGs are connected with an alternating-current bus respectively. The micro-grid multi-master-slave mixing control method is characterized in that according to the master-slave control method, the improved droop control is performed on a master control DG; a frequency difference f-fn and a voltage difference U-U0 are used as feedback signals and are added into f and U respectively, wherein f, fn, U and U0 are of master control DG output frequency, a grid frequency rated value, master control DG output voltage and an output voltage amplitude when master control DG output reactive power is 0 respectively. Compared with the prior art, the master control DG adopts the improved droop control and the frequency difference f-fn and the voltage difference U-U0 are used as the feedback signals; a PI link is increased on the feedback signals and a droop coefficient is amplified and corrected; the compensation effect of a feedback link is amplified and rapid power compensation of load changes in a system is realized; the adaptability and stability of the system can be improved; a control strategy does not need to be changed and the system is operated smoothly.

The invention concerns a freewheel bearing device including an outer element and inner element arranged inside the outer element, and a free wheel provided with at least a wedging element, arranged between the inner element and the outer element to allow a free rotational movement in one direction between the outer element and the inner element and for transmission of a torque in the other direction between the outer element and the inner element, the free wheel including a ring provided with a cylindrical inner surface and a cylindrical outer surface, substantially aligned on a radial plane perpendicular to the axis of rotation of the device, and a torque limiting member adapted to limit the torque transmitted by the free wheel, the torque limiting member being arranged radially between said ring and the outer element or the inner element in contact with said ring and said element.

There is provided embedded light guiding parts that allow for light, signals or live images to appear on its surface. Specifically there is provided a light system having an array of rods made in a hard transparent or translucent polymer material embedded in a building material. The tapered rods are held together by a back-bone that connects the bases of the tapered rods to achieve an evenly distributed array of tapered rods, preferably having the same orientation, wherein the rods are adapted to receive a light input at the base ends and to transmit the light output at the front ends of the rods.

The invention discloses a digitized combustion control and optimization method and system for a pulverized coal boiler. The method includes the steps that pulverized coal flowing speed and pulverized coal concentration of all pulverized coal conveying pipes are adjusted in real time, so that the deviation of the pulverized coal flowing speed of all the pulverized coal conveying pipes is smaller than +/-5%, and the flow deviation of pulverize coal quality is smaller than +/-10%; according to the current secondary air amount, the pulverized coal input amount and air content of primary air of each pulverized coal combustor, the air-fuel ratio numerical value or the excess air coefficient of each combustor is obtained, and the deviation of the air-fuel ratios among all the pulverized coal combustors is smaller than +/-10% through adjusting secondary air adjusting valves of the pulverized coal combustors; according to the change trend of unburned carbon in flue dust, and the oxygen content and the carbon monoxide concentration in tail gas fume, the coal-conveying amount and secondary air amount are adjusted so that the air-fuel ratio or the excess air coefficient of each combustors can reach the optimal set value. Through distribution and leveling of pulverized coal and reasonable adjustment of the air-fuel ratios in the combustors, the combustion process of the pulverized coal boiler is controlled and optimized in a digitalized mode.

The invention discloses a charging control method suitable for an electric vehicle charging station. A certain number of alternating-current charging piles which supply power by using 220V single phase alternating current are arranged in the charging station, the entrance time, the remaining electric quantity, the estimated leaving time, the charging load curves and other information of entrance vehicles are collected, the collected charging load curves are added into load curves of all current phases, the optimal solution of each phase is obtained through an optimization algorithm, wherein the optimal solution of each phase is a charging queuing sequence, which enables the three-phase load balance degree highest, of all charging vehicles including new entrance vehicles in the whole station. The solution, in which the load balance degree is highest, in the optimal solutions of the three phases serves as the global optimal solution, charging facilities, which are connected with the phases corresponding to the entrance vehicles, are assigned to the entrance vehicles respectively, and the charging queuing sequence corresponding to the entrance vehicles is adopted to serve as the current queuing sequence of charging vehicles; optimization solving is conducted on each entrance vehicle. According to the charging control method, the charging time period of each vehicle is reasonably arranged, so that the three-phase load balance degree keeps optimal all the time.

An embodiment of the invention discloses an Internet of Things management method and an Internet of Things management platform which are used for ensuring operation of industrial equipment economically, efficiently, completely and accurately. The Internet of Things management platform comprises an equipment adapter, a data platform and an application platform; the equipment adapter is used for acquiring equipment data of corresponding industrial equipment and is further used for transmitting the equipment data to the data platform; the data platform is used for transmitting the equipment data to the application platform corresponding to the industrial equipment; the application platform is used for generating control information according to the equipment data, and the control information is used for controlling operation status of the industrial equipment; the application platform is further used for transmitting the control information to the data platform; the data platform is further used for transmitting the control information to the equipment adapter corresponding to the industrial equipment; the equipment adapter is further used for controlling the operation status of the industrial equipment according to the control information.

The present invention discloses a waste water treatment method, in particular to a heavy metal processing method in electroplating effluent, which comprises the steps of pretreatment, detection, filtration, adsorption, ionexchange and regeneration of filter material; wherein the filtration, adsorption and ionexchange processes are gathered to a whole, a sodium form resin serves as the filter material of the filtration, adsorption and ionexchange processes; the electroplating effluent contacts the resin sufficiently at a certain flow rate so as to be completely exchanged; and the resin is regenerated and recovered in good time according to the heavy metal content of the waste water. The present invention has the advantages of that the equipment is simple, the installation is convenient, the former waste water treatment process is not changed, the resin can be regenerated and recovered, the heavy metal ion and the suspended matter SS can be completely removed from the water, and the cost is reduced. The present invention can be widely used in the waste water treatment processes of various electroplating effluent.

The invention provides a treatment method and system for sprayed VOCs (Volatile Organic Chemicals) mixed gas. The method comprises the following steps: firstly, removing paint mist in mixed gas; then raising the temperature of the gas without the paint mist to 320 DEG C to 350 DEG C; and carrying out a catalytic oxidization reaction under a catalytic condition of a catalyst to thermally decompose the mixed gas into high-temperature flue gas containing a carbon-oxygen compound and a hydrogen-oxygen compound, and then discharging out the high-temperature flue gas. The system comprises a paint mist removing device for removing the paint mist in the sprayed VOCs mixed gas, a heating unit for heating the sprayed VOCs mixed gas, a catalytic oxidization reaction chamber and a centralized emission device, wherein the paint mist removing device is provided with a gas inlet of the sprayed VOCs mixed gas and a gas outlet of the sprayed VOCs mixed gas; the gas outlet of the paint mist removing device is connected with the gas inlet of the heating unit; the gas outlet of the heating unit is connected with the gas inlet of the catalytic oxidization reaction chamber; and the gas outlet of the catalytic oxidization reaction chamber is communicated with the centralized emission device, and the catalytic oxidization reaction chamber is internally filled with a catalyst and a heat accumulation body.

The invention belongs to the technical field of rail traffic communication networks, and discloses a method for optimizing the network topology of an urban rail train. The optimization design processes of the reliability and the realtime performance of a communication network are met simultaneously under the constraint of economical efficiency through the thought of bi-level programming. According to the bi-level programming, the programming of the physical topology of a train network is regarded as discrete network programming, logical topology programming is regarded as shortest delay programming, and a bi-level programming model is solved based on a genetic algorithm. The balance point of cost, reliability and time can be found effectively through the optimizing method. A solving result based on the genetic algorithm is provided for a given example, therefore, the method can be applied to actual engineering problems, and when the method is applied to rail traffic train network construction, the train network can operate more economically and more efficiently, construction cost is effectively saved, and unnecessary waste and redundancy are reduced.

The invention provides a charging plan making method based on an electric vehicle battery swap station time sequence response model. The method comprises a step of establishing a backup battery control ability model in a battery swap station for the characteristic of an electric vehicle swap model, establishing a battery group state vector in the battery swap station, grouping battery group controlled states to obtain corresponding state vectors, and determining each state battery group number, a step of obtaining the load margin of the backup battery group in the battery swap station through recursive simulation, comprising calculating the battery swap station load margin of a t time and calculating following time load margin belt according to the actual load of the t time battery group, a step of proposing the making method of a battery swap station service provider charging plan with the combination of the load margin belt of the backup battery group in the battery swap station and the target load determined by a grid operation requirement under the premise of satisfying an electric vehicle swap requirement and a grid operation requirement. On the basis of satisfying the swap requirement, the reasonable regulation and control of the backup battery group charging time and charging quantity is realized, and the economic and efficient operation of the battery swap station is realized.