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130results about How to "Solve running problems" patented technology

Active power distribution network multi-period island operation method giving consideration to intelligent soft switch

The invention discloses an active power distribution network multi-period island operation method giving consideration to an intelligent soft switch, and the method comprises the steps: inputting a selected power distribution system structure and parameters; building an active power distribution network multi-period island operation model; carrying out the linearization, second-order conic model transformation and rotating conic model transformation of a target function and nonlinear constraint conditions in the active power distribution network multi-period island operation model according toa standard form of conic planning; employing a conic planning solving method for solving a second-order conic planning model, and obtaining the recovery load coefficient of each node, the output power and control modes of controllable and uncontrollable distributed power supplies, the charging and discharging power and load states of an energy storage system and the transmission power of the intelligent soft switch. and outputting a solving result. The method gives full consideration to the impact on the island operation of a power distribution system from the access of the intelligent soft switch, and the second-order conic planning model for the active power distribution network multi-period island operation, and the problem of the active power distribution network island operation is solved.
Owner:TIANJIN UNIV

Power-saving mode starting method and device

The invention reveals a power-saving mode starting method and device, and belongs to the field of electronic circuits. The method comprises the steps: receiving an operation instruction for operating a specific application program; detecting whether the number of application programs of the specific type in operation reaches a preset threshold value or not if the current voltage of a battery in intelligent equipment is lower than a first preset voltage and the battery is at a discharge state; selecting the application program with the operation priority being lower than the operation priority of the specific application program from the application programs of the specific type in operation if the number of the application programs of the specific type in operation reaches the preset threshold value, and turning off the selected application program; and operating the specific application program after the application program is turned off successfully. Therefore, the method solves a problem that a user cannot turn off a background application program in operation to guarantee the normal operation of a to-be-started application program, achieves the automatic turning-off of the background application program in operation, and guarantees the normal operation of the to-be-started application program.
Owner:XIAOMI INC

Wearing and clogging diagnosing method of SCR denitration catalyst

The invention relates to a wearing and clogging diagnosing method of an SCR denitration catalyst. The method comprises: graphical representation and marking are carried out on wearing and clogging situations of a catalyst inside a reactor and a visual cloud chart is drawn; sampling is carried out on the catalyst inside the reactor and mechanical property detection and analysis are carried out on the catalyst to obtain detection and analysis data of the catalyst; field detection of denitrification equipment is carried out to obtain data of an actual flow field operation situation of the denitrification equipment; on the basis of CFD numerical value simulation and physical model testing, a model consistent with the catalyst structure and the internal structure of the reactor is established; and with the visual cloud chart, the data and the model, causes of wearing and clogging of the catalyst are obtained. With the diagnosing method provided by the invention, a catalyst operation problem of a power plant is solved; the operation economy and equipment safety of the denitrification equipment are improved; exploration of diagnosing the wearing and clogging problems of the SCR catalyst is carried out; and thus the service life of the catalyst is prolonged and the risk of the operation accident of the denitrification equipment is reduced.
Owner:SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD

Apparatus for automatically detecting insulating properties of electric power transmission line

The invention relates to an apparatus for automatically detecting insulating properties of an electric power transmission line. The apparatus is characterized by including an apparatus main body, a walking module, a measuring module, an outer expansion module, a secondary opening module, a power supply module, a control module and a wireless communication module. The control module, the power supply module, and the wireless communication module are mounted inside the apparatus main body. The power supply module and the other modules are connected so as to supply power to the other modules. The control module is connected to the walking module, the measuring module, the outer expansion module, the secondary opening module, and the wireless communication module so as to realize detection control function. According to the invention, the apparatus main body is moving on the electric power transmission line, and a temperature sensor and an electric field sensor are used individually for collecting temperature values and electric field intensity values at different positions of the electric power transmission line, and malfunction points are determined by the temperature values and the electric field intensity values in combination with a counter on a drive wheel. The apparatus of the invention guarantees timeliness of detection of the insulating properties of the electric power transmission line, effectively prevents unnecessary trouble brought by current method of artificial detection, and substantially increases detection efficiency.
Owner:HEBEI UNIV OF TECH

Hybrid power ship energy efficiency control system and method

The invention provides an energy efficiency control system and method for a hybrid power ship. The control system comprises a first diesel generator set, a second diesel generator set, a shore power supply, an alternating current bus, an energy storage unit, a direct current bus, a left motor, a left clutch, a left main engine, a right motor, a right clutch and a right main engine. The first diesel generating set and the second diesel generating set are connected with a shore power supply alternating-current bus; the alternating-current bus is connected to the direct-current bus; the energy storage unit is sequentially connected with the direct-current bus; the direct-current bus is connected with the left motor and the right motor; the left motor is connected with the left propeller and the left host; the right motor is connected with the right propeller and the right host. The unmanned aerial vehicle has the advantages that the propellers can be independently driven by a main engine,a motor or diesel-electric drive combining the main engine and the motor; the motor can work in a propelling state or a power generation state, and the reliability is high; the hybrid power ship energy efficiency optimal grey prediction control method is provided, and the problem that a diesel engine operates with the lowest oil consumption SFOC is fundamentally solved.
Owner:锡瑞迪船用动力系统(上海)有限公司 +1

Compact bogie with built-in axle boxes for high-cold subway vehicles

The invention discloses a compact bogie with built-in axle boxes for high-cold subway vehicles and belongs to the field of bogie devices for railway vehicles. The compact bogie with the built-in axleboxes for high-cold subway vehicles comprises two drive devices, two brake devices, two wheel set devices, a compact casting structure, a compact secondary suspension system and two wheel set built-inaxle box devices, wherein each wheel set device comprises an axle and wheels arranged at two ends of the axle symmetrically, each drive device comprises a traction motor and a gearbox, and each brakedevice comprises two wheel set brakes. The compact bogie with the built-in axle boxes for high-cold subway vehicles has the advantages that a bogie fixed wheel base is reduced substantially while structural strength is ensured, and yaw angle stiffness of wheel sets and distorsion stiffness of the bogie are both reduced effectively, so that a rotation radius of the bogie is decreased, the curve passage capacity thereof is improved to meet the anti-collision requirements of horizontal damping and curve bends completely, and the space occupied by a retainer of a previous horizontal buffer is saved; by the aid of a snow plow device and three-rail ice-snow scraper devices, the compact bogie is applicable to high-latitude extremely-cold regions.
Owner:CRRC CHANGCHUN RAILWAY VEHICLES CO LTD

Feed water pump turbine steam exhaust waste heat recovering and recycling system

PendingCN108533341ASolve running problemsRetrofit project is easy to realizeSteam useEngineeringTurbine
A feed water pump turbine steam exhaust waste heat recovering and recycling system comprises a big turbine, an air cooling island or a condenser, a high back pressure condenser, a small feed water pump turbine, a steam increase machine, a steam increase machine condenser and a steam exhaust lead-out system. A lower pressure cylinder steam discharging pipeline of the turbine is connected with the air cooling island or the condenser. Through the steam exhaust lead-out system, steam exhaust is led out to enter the steam side of the high back pressure condenser. An exhaust steam branch of the small feed water pump turbine is connected with a pumping steam inlet of the steam increase machine. Exhaust steam of the steam increase machine enters the steam side of the steam increase machine condenser. The water side of the steam increase machine condenser is connected with the water side of the high back pressure condenser for water output. Back pressure decoupling of the big turbine and the small turbine is achieved, and the operation problem of the small feed water pump turbine is solved, equipment does not need to be modified; the adaptability of a heat supply system becomes more complete; and the waste heat recovering and recycling system can achieve operation and switching under different working conditions at the same time.
Owner:UNI RISING BEIJING TECH CO LTD

Intelligent environmental protection management system and method based on industrial park

PendingCN112637306APromote cross-industryFacilitate cross-business developmentTransmissionInstrumentsData displayInformation processing
The invention relates to an intelligent environmental protection management system and method based on an industrial park, computer equipment and a storage medium. The system comprises a hardware layer which is used for deploying monitoring data collection equipment, and carrying out the unified collection, conversion and uploading of the operation state of the equipment, water quality and water quantity, and solid waste monitoring data; a communication layer is used for networking the service data and the acquired data with a cloud platform through an optical fiber or a wireless network so as to realize transmission of the service data and the acquired data to the cloud platform; a platform layer is used for providing public service of the underlying application; an application layer is used for carrying out information processing through the cloud platform so as to provide a corresponding management function, and comprises an environmental protection database, a compliance management module, a water resource management module and a solid waste resource management module; a user layer is used for realizing data display and interaction through intelligent terminal equipment for management personnel. The problems of repeated construction, information isolated island and low information utilization efficiency of an environmental protection system in the industrial field can be solved.
Owner:华润环保发展有限公司

Pump body assembly and slide vane compressor with pump body assembly

The invention provides a pump body assembly and a slide vane compressor with the pump body assembly. The pump body assembly comprises a flange, an air cylinder, a spindle and multiple slide vanes, wherein the slide vanes are slidably arranged on a rotor part of the spindle; and the rotor part is located in the air cylinder. The pump body assembly further comprises an exhaust structure arranged onthe flange, wherein the exhaust structure comprises a diversion trench and an exhaust hole communicating with the diversion trench; the exhaust hole extends onto the end surface of the flange from thebottom of the diversion trench; the rotor part is provided with an exhaust trough; in the rotation process of the spindle, gas located in a compression cavity of the air cylinder enters the diversiontrench through the exhaust trough, enters the exhaust hole through the diversion trench, and is exhausted to the outside of the pump body assembly through the exhaust hole. The pump body assembly andthe slide vane compressor with the pump body assembly provided by the invention effectively solve the problem that the structural strength of a flange in the prior art is lower so as to affect the normal operation of the slide vane compressor.
Owner:GREE ELECTRIC APPLIANCES INC

Air conditioner indoor unit, air inlet method for air conditioner indoor unit and air conditioner

The invention provides an air conditioner indoor unit, an air inlet method for the air conditioner indoor unit and an air conditioner. According to the technical scheme, the air conditioner indoor unit comprises an air inlet structure, a PM2.5 monitoring sensor and a controller. The air inlet structure comprises a haze removal filtering screen. The haze removal filtering screen is arranged at an air inlet of the air conditioner indoor unit in a position-adjustable manner for blocking at least part of the air inlet. The PM2.5 monitoring sensor is used for monitoring the real-time PM2.5 value of the environment where the air conditioner indoor unit is located. The controller is used for controlling the haze removal filtering screen to open or close the air inlet according to the PM2.5 value. Accordingly, the air inlet of the air conditioner indoor unit is controlled to be closed when the air conditioner operates in the purification mode, and the air inlet of the air conditioner indoor unit is controlled to be opened when the air conditioner operates in the normal mode; and it is guaranteed that the air intake is sufficient when the air conditioner operates in the normal mode, and the problem that when an air conditioner indoor unit with a haze removal filtering screen operates in the normal mode, the normal operation of the air conditioner is influenced due to the blocking of the haze removal filtering screen in the prior art is solved.
Owner:ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION

Active power distribution network island division method considering uncertainty of distributed power supply

The invention relates to an active power distribution network island division method considering uncertainty of a distributed power supply. According to the selected active power distribution network,the active power distribution network structure and parameters are inputted; according to the active power distribution network structure and the parameters, a deterministic active power distributionnetwork island division model is established, and a compact form of the active power distribution network island division model is acquired; according to the compact form of the active power distribution network island division model, an uncertainty set of an uncontrollable distributed power source is set, and an active power distribution network island division robust model considering the uncertainty of the distributed power source is established; the active power distribution network island division robust model is solved through the column and constraint generation algorithm; the solutionresult is outputted, including a recovery load coefficient of each node, the output power and a control mode of the controllable/uncontrollable distributed power source, the charging and dischargingpower and the state of charge of an energy storage system, and the transmission power of an intelligent soft switch. The method is advantaged in that the load recovery level can be effectively improved, and power supply reliability of the active power distribution network can be further improved.
Owner:TIANJIN UNIV

Air conditioner, air conditioner indoor and outdoor unit communication circuit and fault detection method thereof

The invention discloses an air conditioner, an air conditioner indoor and outdoor unit communication circuit and a fault detection method thereof. The air conditioner indoor and outdoor unit communication circuit comprises a first communication module, a second communication module, a detection module, a control module, a power supply module and a communication line, wherein the power supply module comprises a first power supply and a second power supply which are connected in parallel; the communication line comprises a first communication path and a second communication path which are connected in parallel; the detection module is used for detecting the loop current of a communication loop and outputting the loop current to the control module; the control module is used for controlling the first power supply to be disconnected and the second power supply to be connected when the communication fault of the communication loop occurs and the loop current is determined to be less than the preset current; and the control module is also used for controlling the first communication path to be disconnected and the second communication path to be connected when the loop current is determined to be less than the preset threshold after the first power supply is disconnected and the second power supply is connected so that the communication line can be automatically switched when the indoor and outdoor unit connecting line fails and the maintenance cost can be saved.
Owner:TCL AIR CONDITIONER ZHONGSHAN CO LTD

Cutting device of annular protruding flanging at welding line inside polyethylene pipe

The invention relates to the technical field of welding tools, and provides a cutting device of annular protruding flanging at a welding line inside a polyethylene pipe. The cutting device comprises a center rod, elastic centering supports, a fixing base, a connecting base, a cutting assembly and an elastic supporting base; the at least two elastic centering supports are distributed on the outer side of the center rod at intervals in the left-right direction, the fixing base and the elastic supporting base are arranged between two elastic centering supports, one end of the fixing base and the center rod are fixed together, the other end of the fixing base and one end of the connecting base are hinged together, and the other end of the connecting base is fixedly provided with the cutting assembly capable of conducting lossless operation on the annular protruding flanging at the welding line inside the polyethylene pipe. By means of the cutting device, lossless operation on the annular protruding flanging at the welding line inside the polyethylene pipe can be achieved through the elastic centering supports, the cutting assembly and the elastic supporting base, the cutting position of the cutting device is accurate, the pipe is not prone to being damaged, and smooth implementation of repairing engineering construction of the HDPE pipe penetrating a steel pipe.
Owner:克拉玛依市博瑞科技发展有限公司

Method and system for monitoring indoor environment

The invention discloses a method and system for monitoring the environment and belongs to the technical field of intelligent televisions. The method comprises the steps that a master control module in an intelligent television obtains environmental data collected by a gas sensor integrated in the intelligent television; when the environmental data conform to a set numerical range, a corresponding control strategy is determined through the master control module; and the master control module controls a display screen of the intelligent television to display a prompt message according to the control strategy; or, the master control module obtains a control instruction corresponding to the control strategy so as to control set air purification equipment according to the control instruction. According to the method and system for monitoring the environment, the problem that air purification equipment in the prior art still operates after the indoor air quality reaches the standard is solved, therefore, a user can control the air purification equipment more conveniently, and the energy-saving effect is achieved; and in addition, the gas sensor is integrated in the intelligent television, so that the problem that an intelligent television in the prior art does not have the function of detecting the indoor air quality is solved.
Owner:LETV HLDG BEIJING CO LTD +1
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