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58results about How to "Ensure safe use of electricity" patented technology
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Adaptive kernel function and instantaneous frequency estimation-based fault arc detection method of photovoltaic system
ActiveCN109560770AAccurate descriptionGood time-frequency energy concentrationMathematical modelsPhotovoltaic monitoringFrequency spectrumAdaptive kernel
The invention discloses an adaptive kernel function and instantaneous frequency estimation-based fault arc detection method of a photovoltaic system. The adaptive kernel function and instantaneous frequency estimation-based fault arc detection method comprises the steps of acquiring a signal xt by a time window with TNCT length, performing non-linear frequency modulation wavelet transform to obtain a iteration time-frequency diagram of the xt, and constructing characteristic quantity, used for judging moment when frequency spectrum energy is increased, according to a frequency component in theselected iteration time-frequency diagram; and obtaining a corresponding matrix distribution form of the xt in the time-frequency domain by adaptive optimal kernel time-frequency distribution after an abrupt changing point where the energy is increased is found out, performing square sum on the matrix according to time dimension to obtain a line vector, selecting a plurality of frequency bands, performing frequency-dimensional integral operation on each frequency band to obtain a plurality of characteristic values input into a trained naive bayesian model, and judging a state of the photovoltaic system in a current time frame. By a plurality of effective time-frequency characteristics, a fault arc in the photovoltaic system is accurately identified, meanwhile, no misoperation under various types arc working conditions also can be ensured, and the photovoltaic system safely and stably run.
Owner:XI AN JIAOTONG UNIV
Temperature measuring type electrical fire monitoring system
ActiveCN101964130AWith intelligent analysis abilityEliminate electrical hazardsCurrent/voltage measurementThermometers using physical/chemical changesGeneral Packet Radio ServiceEngineering
The invention relates to an electrical fire monitoring system which comprises an optical fiber temperature monitoring alarm device, a residual current type electrical fire monitoring detector and an alarm monitoring host. The system also comprises a data concentrator, and the data concentrator is used for respectively receiving monitoring information from the optical fiber temperature monitoring alarm device and the residual current type electrical fire monitoring detector and uploading the monitoring information to the alarm monitoring host, through the Ethernet or a local network. The alarm monitoring host communicates with a monitoring workstation in real time through the Ethernet or local network or a GPRS (General Packet Radio Service) wireless network. The optical fiber temperature monitoring alarm device and the residual current type electrical fire monitoring detector are respectively used for monitoring the temperature information of power equipment and the residual current information of each return circuit and transmitting the monitoring information to the data concentrator. The data concentrator uploads the monitoring information to the monitoring host through the Ethernet or local network after processing the monitoring information, and the monitoring host displays whether the power equipment is overheated and the residual current in the return circuit exceeds limits or not in real time and gives an early warning or alarm when an exception occurs.
Owner:陕西银河电力仪表股份有限公司
Double temperature-sensing power-off circuit protection structure
InactiveCN101685722AEnsure electricity safetySustainable useHeating/cooling contact switchesThermal switch detailsWorking temperatureElectric wire
The invention provides a double temperature-sensing power-off circuit protection structure, comprising two independently working temperature-sensing power-off devices arranged between two terminals ofa return circuit, a thermal sensing tripping device and a thermal breaking device. A contact striking flake of the thermal sensing tripping device is heated and deformed to reversely bend to trip outin order to realize interruption under the conditions of overload current, overheating circuits or excess high temperature of environment. Besides, when the thermal sensing tripping device fails to respond, respond late or repetitively powers off and the temperature of the return circuit continuously rises after powering on under the conditions of overload current, overheating circuits or excesshigh temperature of environment, a low-melting point block of the thermal breaking device is heated to be melted and broken in order to open the return circuit and realize interruption. In the invention, the two independently working temperature-sensing power-off devices respectively sense temperature, have a double temperature-sensing power-off effect, and the return circuit can be temporarily powered off, powered on again or completely powered off, thereby avoiding dangers of overheating circuits or short circuit of electric wires.
Owner:游聪谋
Safety grounding all-purpose online detector
ActiveCN103267923AEnsure safe use of electricitySimple circuitCircuit interrupters testingElectricityEngineering
Owner:张振汉
Intermittent temperature controller of refrigerator
InactiveCN102819277AEnsure safe use of electricityExtended service lifeDomestic cooling apparatusLighting and heating apparatusFire riskEngineering
The invention provides an intermittent temperature controller of a refrigerator. The controller is composed of a 220V AC power supply, a resistance-capacitance voltage reducing rectification circuit, a 12V voltage stabilizing circuit, an intermittent oscillating circuit, an intermittent time regulating circuit, a level power amplification and relay control circuit and a refrigerator working condition indication circuit. The controller is characterized in that the model number of a binary serial counting integrated circuit IC1 in the intermittent oscillating circuit is CD4060. Some refrigerators have the faults of failure in stopping, and so on, caused by poor performance of the temperature controller or slight leakage of the refrigerating fluid in the refrigerating system of the refrigerator. Such a fault has the following dangers that 1, a compressor of the refrigerator is tired and completely damaged after working long time without stop; 2, the compressor causes power waste by working without stop; and 3, fire risk exists in electricity utilization of the refrigerator. The intermittent temperature controller solves the problems in above aspects better without changing the original internal circuit structure of the refrigerator, effectively ensures safety utilization of electric power and prolongs the service life of the compressor of the refrigerator.
Owner:周芸
Control system and control method of dehumidifier of wind turbine generator
PendingCN109058045AGuaranteed reliabilityHigh intelligenceWind motor with solar radiationBatteries circuit arrangementsElectrical energy storageAutomotive engineering
The invention discloses a control system and a control method of a dehumidifier of a wind turbine generator. The control system comprises a first sensor, a second sensor, a controller, a storage battery and a inverter, wherein the first sensor is used for acquiring operation parameters of power generation equipment in the wind turbine generator; the second sensor is used for acquiring the feedbackinformation of the dehumidifier in the wind turbine generator; the controller is used for acquiring the operation parameters and the feedback information, a power supply starting and stopping instruction and an electric energy storage instruction are generated according to the operation parameters and the feedback information; the storage battery is used for storing electric energy generated by the power generation equipment according to the electric energy storage instruction, or outputting the electric energy to the dehumidifier according to the power supply starting and stopping instruction; the input end of the inverter is connected with the controller, the output end of the inverter is connected with the dehumidifier, the connection of the dehumidifier and the power generation equipment and / or the storage battery are connected or disconnected according to the power supply starting and stopping instruction, According to the system and the method, the ambient humidity working by the dehumidifier is monitored in real time, closed-loop control is carried out on the dehumidifier according to the real-time monitoring data, so that the safety is improved integrally, and the problemsof short service life and resource waste caused by over-use are avoided.
Owner:HUADIAN HEAVY IND CO LTD
Double-temperature-sensing cut-off circuit protector
InactiveCN1848581AProtection FeaturesEnsure safe use of electricityEmergency protective arrangements for automatic disconnectionTwo temperatureElectric wire
An electric circuit protector of double temperature induction cut-off type is featured as setting contact flexure strip and thermal cut-off unit between two contact terminals on circuit loop to form two temperature induction cut-off units being operated independently, bending contact flexure strip towards opposite direction for tripping it off by deformation caused by heat to cut-off circuit first or otherwise rising temperature up continuously to melt fuse block to cut off circuit when current is overloaded and circuit is overheated.
Owner:游聪谋
Non-contact shutdown reminding device for high-power electrical appliance
InactiveCN102013884AEnsure safe use of electricitySave electricityElectronic switchingHigh resistanceElectricity
The invention belongs to the technical field of electronics, and relates to a non-contact shutdown reminding device for a high-power electrical appliance. The device is composed of a small industrial frequency transformer (inductive probe), a full bridge rectifier, a high-resistance operational amplifier, a level phase inverter circuit, a circulation timing circuit, a delay and DC amplification circuit, a buzzer and a power supply, the device is characterized in that the inductive probe uses the primary of the small industrial frequency transformer, the full bridge rectifier uses a Schottky diode, the high-resistance operational amplifier uses CA3140, and the circulation timing circuit uses CD4060. Based on a principle of refusing to change structure and inner circuits of the high-power electrical appliance, the device, being within 35cm far away from the high-power electrical appliance, can detect whether the high-power electrical appliance is working, and can actively send out shortly changing beep sound at each 15 minutes to remind users of shutting down the power supply of the high-power electrical appliance, so that electricity safety and electrical energy saving are both implemented.
Owner:刘昭利
Intelligent double-control electrical leakage breaking alarm
InactiveCN101257204AEnsure safe use of electricityStable jobArrangements resposive to fault currentElectricityPower grid
The invention provides an intelligent double-control creep cutting alarm which has characteristics in that: including a metal casing, an intelligent detection encoder, a switch electrical source, a creep breaker; the intelligent detection encoder input port connects with a power network input port; the intelligent detection encoder input port also connects with a creep voltage collecting line; the creep voltage collecting line connects with the metal casing, and connects with a distribution equipment drain electrode through the metal casing; the switch electrical source is series connected between the intelligent detection encoder input port and power network input port for supplying power to the intelligent detection encoder; the creep breaker is series connected between the power network input port and output port; the intelligent detection encoder output port connects with the creep breaker; the creep breaker controls opening / cutting of the power network input port and output port according with output signal of the intelligent detection encoder. The alarm detects power network safety state according with creep voltage, and is used for power supply environment characteristic in field operation, ensures using electricity safely in field operation.
Owner:石在虹
Dual temperature sensing cutoff circuit protective device
InactiveCN101728120AEnsure electricity safetyGuaranteed continuous useHeating/cooling contact switchesThermal switch detailsOperating temperatureCircuit protection
The invention discloses a dual temperature sensing cutoff circuit protective device. Two independently-operating temperature sensing cutoff devices, i.e. a thermal induction tripping device and a hot melting breaking device, are arranged between two terminals of a circuit loop; the cutoff is realized by the deformation by being heated and reverse bending tripping of a contact spring of the thermal induction tripping device under the condition that the current is overloaded, the circuit is overheated or the ambient temperature is overhigh; or because the current is overloaded, the circuit is overheated or the ambient temperature is overhigh, when the thermal induction tripping device has no reaction and slow reaction or repeated cutoff and electrifying, and the temperature of the circuit loop continuously rises, the cutoff can be realized after the easily-melt alloy of the hot melting breaking device is melt and broken by being heated to form an open circuit of the circuit loop. The two independently-operating temperature breaking devices respectively and independently sense the temperature, have dual temperature sensing breaking functions and enable the circuit to be cut off in a short time, be electrified again or completely cut off so as to avoid the danger caused by the circuit overheat or short circuit.
Owner:游聪谋
Silicon-controlled water pump pressure regulation control device
InactiveCN103470482AEasy to operateBulky structurePump controlPositive-displacement liquid enginesEngineeringControl switch
The invention relates to a silicon-controlled water pump pressure regulation control device which comprises an upper cap, a regulating and fixing disc, an outer circuit board cover and a shell. An upper regulating switch and a lower regulating switch are disposed in the regulating and fixing disc, a silicon-controlled water pump pressure regulation controller is arranged in the outer circuit board cover, the upper cap, the regulating and fixing disc and the outer circuit board cover are arranged in the shell, a round hole is formed in the upper cap, a first cylinder straight hole and a second cylinder straight hole are formed in the front faces of the upper regulating switch and the lower regulating switch respectively, clamping mechanisms are arranged on the side faces of the upper and lower regulating switches, a groove is formed in the regulating and fixing disc, a tooth socket is formed in the side face of the inner wall of the regulating and fixing disc, the silicon-controlled water pump pressure regulation controller comprises a water pressure gauge, a control circuit board, a silicon-controlled control switch, an upper dead-center magnetic switch, a lower dead-center magnetic switch, an input plug and an output socket, a magnet is arranged on the water pressure gauge and matched with the upper and lower dead-center magnetic switches, the silicon-controlled control switch is located at the bottom of the control circuit board and fixed with a water pressure sensor on the water pressure gauge through screws, and a control circuit is arranged on the control circuit board.
Owner:张仙驰
Rat-proof system used for power distribution cable and laying method thereof
InactiveCN106711908AAvoid destructionAvoid enteringElectrical apparatusAnimal repellantsElectricityEngineering
The invention relates to the technical field of rat control, and particularly relates to a rat-proof system used for a power distribution cable and a laying method thereof. The structure of the rat-proof system comprises an electric well and a power distribution room which is connected with the electric well. The electric well comprises a filler which is arranged in the internal cavity of the electric well and used for wrapping and burying a cable, a through hole which is arranged on the wall surface of the electric well and used for penetrating of the cable and steel wire bodies which fill the through hole and are used for plugging the gap between the cable and the wall of the through hole. The through hole is also communicated with an electric wire slot. The electric wire slot is provided with iron wire cotton in a filling way and is communicated to the power distribution room. A smooth rat baffle is inserted on the door of the power distribution room. According to the rat-proof system, the gap positions are comprehensively filled so that the rats can be intercepted from entering the power distribution cable, the rats can be effectively prevented from damaging the cable and thus safe power utilization of the power distribution cable can be guaranteed. The laying method of the rat-proof system comprises the steps of cable lead-in, cable wrapping and burying, steel wire body filling, iron wire cotton filling and inserting of the rat baffle. The laying method has the advantages of being convenient and easy so as to enhance the rat-proof efficiency.
Owner:广东广昆有害生物防治科技实业发展有限公司
Circuit protection structure with double temperature induction switching-off
InactiveCN101685723AEnsure electricity safetyReduce spendingHeating/cooling contact switchesThermal switch detailsTwo temperatureEngineering
The invention discloses a circuit protection structure with double temperature induction switching-off, which comprises a cover body, a thermal induction trip device, a thermal fusion switching-off device and a seat body. Two temperature induction switching-off devices which run independently are arranged between the two terminals of a circuit loop. At the time of current overload, circuit overheating or overhigh environmental temperature, a contact spring piece of the thermal induction trip device is heated, deformed, bent in a reverse direction, tripped and switched off (OFF); at the time ofthe current overload, the circuit overheating or the overhigh environmental temperature, the fusible alloy of the thermal fusion switching-off device is fused and ruptured when no reaction, an incomplete reaction or repeated OFF and ON occur in the thermal induction trip device and the temperature of the circuit loop is continuously risen, and the complete OFF of the circuit loop is ensured. Thetwo independent temperature induction switching-off devices have double temperature induction switching-off effects and ensure the aim of safe power utilization.
Owner:游聪谋
Power supply plug-type integral Internet of things power parameter monitoring device
PendingCN108896854AFirmly connectedAdd application functionsElectric devicesCurrent/voltage measurementPower parameterWireless data
The invention provides a power supply plug-type integral Internet of things power parameter monitoring device. The power supply plug-type integral Internet of things power parameter monitoring deviceis characterized in that power parameter monitoring modules and wireless communication modules are integrated in a conventional power supply plug to realize measurement of power parameters and a one-to-many BLE (Bluetooth Low Energy) wireless communication manner. The power supply plug-type integral Internet of things power parameter monitoring device comprises a front shell, a power supply switching module, power parameter monitoring modules, wireless communication modules, power supply plug metal inserting sheets, a power connection cable and a back shell, wherein the power supply plug metalinserting sheets are fixed on the front shell; the power supply switching module, the power parameter monitoring module, the wireless communication module are arranged in a space enclosed by the front shell and the back shell; one end of each metal inserting sheet extends out of the front shell; the power connection cable for connecting the power parameter monitoring module and the wireless communication module extends out of the enclosed front shell and the back shell; the wireless communication module comprises a wireless multi-node communication circuit, and power parameters measured by the plurality of power parameter monitoring modules can be read, displayed and stored in real time by one piece of wireless data receiving end equipment simultaneously through the wireless multi-node communication circuit.
Owner:北京双竞科技有限公司
High risk and important client remote monitoring system
InactiveCN105119384AEnsure safe use of electricityGuaranteed normal power consumptionCircuit arrangementsInformation technology support systemTransformerLow voltage
A high risk and important client remote monitoring system belongs to the technical field of monitoring of electric power systems. The invention aims to solve the problems of low monitoring degree and precision since an existing power monitoring system is not provided with a standardized and modularized integrated system. The high risk and important client remote monitoring system comprises a field monitoring layer, a communication network layer and a system managing layer; the field monitoring layer adopts a network electric power meter, a field monitoring device, a 10kV microcomputer integrated protection device, a transformer temperature controller and a direct current screen controller, which are configured in a low voltage distribution cabinet, to collect field data; the communication network layer comprises a field bus communication network and an Ethernet communication network; the field bus communication network is used for transmitting the field data collected by the field monitoring layer to the system managing layer; the Ethernet communication network is used for transmitting the data of the field bus communication network to the system managing layer; the system managing layer adopts an electric power monitoring managing computer, peripheral equipment thereof and network communication equipment to monitor and manage field data. The invention is used for an electric power system.
Owner:STATE GRID CORP OF CHINA +1
Line fault monitoring method, device, computer readable storage medium and device
InactiveCN108318779AReduce work intensityEnsure safe use of electricityFault location by conductor typesPhase currentsElectricity
The invention provides a line fault monitoring method, device, a computer readable storage medium and device. The method comprises the steps of obtaining A-phase current, C-phase current, active power, and bus voltage of a line; calculating B-phase current of the line based on the active power and the bus voltage of the line; determining whether the line has fault or not based on the A-phase current, the B-phase current, the C-phase current of the line; if the line has a fault, the fault information will be forwarded to workers. The invention is advantageous in that fault can be found by workers in first time, and the fault can be processed in time; work intensity for workers can be greatly reduced, long-time running of devices with faults can be prevented, and safe running of device and safe usage of electricity for users can be ensured.
Owner:STATE GRID HEBEI ELECTRIC POWER CO LTD +1
Smart water cup for children
PendingCN110367773AUnderstand the daily drinking water statusEfficient detectionDwelling equipmentDrinking vesselsSmart waterDisplay device
The invention discloses a smart water cup for children. The smart water cup for children includes a cup cover and a cup body connected to the cup cover; the cup cover includes a hemispheric hollow-structured upper cover, and a cup cover body hinged to the upper cover; and the cup body includes a middle cover hinged to the upper cover, a cup cover lower shell with one end connected to the middle cover and the other end in threaded connection with the cup body, the middle cover arranged between the upper cover and the cup cover lower shell, a through hole arranged in the center of the middle cover and communicating the cup body, a control main board arranged in the middle cover, a control circuit installed on the control main board, and a temperature probe, a flowmeter, a horn, a power source and a display device connected to the control circuit. The smart water cup for children has simple principles and is easy to realize. The flowmeter can be used to obtain children's daily water drinking situation conveniently, so as to provide data support for subsequent management of children's water drinking and facilitate the cultivation of healthy water drinking habits of children. The smartwater cup for children has high practical value and promotion value.
Owner:THE SMALL MONSTER (SHENZHEN) TECH CO LTD
High-voltage distribution box of pure electric commercial vehicle
InactiveCN102166999AEasy to updateEnsure safe use of electricityElectric/fluid circuitElectric power steeringElectric cars
The invention relates to a high-voltage distribution box of a pure electric commercial vehicle. An electric-controlled high-voltage DC contactor is used as an input terminal; an electric-controlled air breaker is used as an output terminal; a high-voltage distribution controller is used for controlling the input and output of the high voltage according to instructions; and a special electricity meter for the electric vehicle is arranged for respectively displaying the total energy consumption of the vehicle, the energy consumption of a driving motor, the energy consumption of an air conditioner, the energy consumption of an electric-assisting steering oil pump, the energy consumption of an electric air compressor and the like. The high-voltage distribution box in the invention can automatically distribute the power to the entire electric vehicle, ensure the safety utilization of power, and easily update the control parameters of the entire vehicle.
Owner:BIT HUACHUANG ELECTRIC VEHICLE TECH
Vacuum circuit breaker
InactiveCN101645367AEasy maintenanceReduce volumeHigh-tension/heavy-dress switchesAir-break switchesCommunication interfaceElectricity
The invention discloses a vacuum circuit breaker which comprises a contact arm, a Rogowski coil mutual inductor, an intelligent overcurrent tripping device, a tripping mechanism, an infrared transmitter and an infrared receiver, wherein the intelligent overcurrent tripping device comprises a CPU; the Rogowski coil mutual inductor is arranged in the contact arm, and the output end of the Rogowski coil mutual inductor is connected with the intelligent overcurrent tripping device by a signal wire; collected current signals and voltage signals are transmitted to the intelligent overcurrent tripping device in real time after being processed by the CPU; the output end of the intelligent overcurrent tripping device is also connected with the infrared transmitter, a communication interface of theinfrared receiver is connected with a supervisory computer by an output signal wire, and the current signals and the voltage signals transmitted by the infrared transmitter are transmitted to the supervisory computer. The invention combines the vacuum circuit breaker and the mutual inductor into a whole and can effectively reduce the volume of a power distribution cabinet, is simple and convenientto maintain the mutual inductor, can realize long-distance telemetering and remote control and ensure the safe electricity utilization of loads.
Owner:JIANGSU ZHENAN ELECTRIC POWER EQUIP
Indoor wall surface drying device
InactiveCN109865649ADry fastAffects the inkjet effectPretreated surfacesCoatingsEngineeringElectric heating
The invention discloses an indoor wall surface drying device comprising two movable bases. The upper ends of the bases are provided with two support rods of the same structure, the support rods are provided with threaded holes, the threaded holes of one support rod are provided with a first drying plate, a second drying plate is mounted on the right side face of the first drying plate, a third drying plate is mounted on the right side face of the second drying plate, the third drying plate is fixed on the other supporting rod, the first drying plate, the second drying plate and the third drying plate are provided with ventilation openings, the ventilation openings are provided with shutter leafs, and electric heating wires and fans are arranged in the three drying plates. Since the deviceuses the two support rods of the same structure to support the three drying plates, the device can be moved to the wall surface to dry the wall surface. The fans are additionally arranged so that aircirculation can be accelerated, and wall drying can be further promoted. In addition, the device is movably installed and combined together, so that movement of the device is facilitated.
Owner:许有坤 +1
Intelligent socket with electric leakage protection function and intelligent control system
PendingCN110190479AImplement leakage simulation actionSolve the problem of leakage cut-off functionProgramme controlComputer controlEmbedded systemIntelligent control system
The invention relates to the technical field of power utilization, and specifically relates to an intelligent socket with an electric leakage protection function and an intelligent control system. Theintelligent socket with the electric leakage protection function comprises an electrical appliance insertion end, a power supply module, an MCU, a relay, a self-checking module and an electric leakage detection module. The intelligent socket with the electric leakage protection function and the intelligent control system solve a problem that the intelligent socket at present does not independently have the functions of electric leakage self-checking and electric leakage detection, and can cut off the power supply on the detected electric leakage at the same time, thereby increasing the integration and intelligentization of the socket, and providing a guarantee for safe power utilization of electrical equipment.
Owner:东莞市伊家智能科技有限公司
Dual temperature sensing cutoff circuit protective device
InactiveCN101728121AEnsure electricity safetyReduce spendingHeating/cooling contact switchesThermal switch detailsOperating temperatureCircuit protection
The invention discloses a dual temperature sensing cutoff circuit protective device. Two independently-operating temperature sensing cutoff devices, i.e. a thermal induction tripping device and a hot melting breaking device, are arranged between two terminals of a circuit loop; the cutoff is realized by the deformation by being heated and reverse bending tripping of a contact spring of the thermal induction tripping device under the condition that the current is overloaded, the circuit is overheated or the ambient temperature is overhigh; or the phenomena that the thermal induction tripping device has no reaction and slow reaction or the repeated cutoff occurs under the condition that the current is overloaded, the circuit is overheated or the ambient temperature is overhigh; and the cutoff can be realized after the easily-melt alloy of the hot melting breaking device is melt and broken by being heated to form an open circuit of the circuit loop when the temperature of the circuit loop continuously rises by electrifying. The two independently-operating temperature breaking devices respectively and independently sense the temperature, have dual temperature sensing breaking functions and enable the circuit to be cut off in a short time, be electrified or completely cut off so as to avoid the danger caused by the circuit overheat or short circuit.
Owner:游聪谋
Sampling method for residential-electrical load sample data based on cloud computing
InactiveCN105870920AWell-equipped facilitiesImprove accuracyData processing applicationsAc network circuit arrangementsComputer scienceLoad following power plant
The invention belongs to the field of power industry, relates to computing of an electrical load, and in particular to a sampling method for residential-electrical load sample data based on cloud computing. The sampling method includes the following steps of a, community sample selecting, wherein community sample selecting needs to meet the following conditions; b, single home sample selecting, wherein single home sample selecting needs to meet the following conditions; c, sampling time and sampling time point selecting. Compared with the prior art, the sampling method has the advantages that according to the sampling method for the residential-electrical load sample data based on cloud computing, the characteristics of existing residential electricity are considered from various angles, electrical load computing can be further effectively obtained, the accuracy of the computing result of the electrical load is greatly increased accordingly, and a guarantee is provided for safe electricity utilization.
Owner:DONGA POWER SUPPLY CO STATE GRID SHANDONG ELECTRIC POWER CO +1
High-voltage electric cabinet with arc detection device
PendingCN111478196AEnsure safe use of electricityDetect arc timely and effectivelySubstation/switching arrangement casingsAnti-seismic devicesMechanical engineeringHigh voltage
The invention discloses a high-voltage electric cabinet with an arc detection device. The cabinet comprises a cabinet body, a mounting plate is arranged in the cabinet body; the mounting plate is usedfor mounting and fixing the electric appliance element; an electric arc detection device is arranged at the inner top of the cabinet body; the arc detection device comprises an arc light sensor and amoving assembly, the arc light sensor is arranged in the cabinet body through the moving assembly, the moving assembly can move the arc light sensor to the position in front of the mounting plate, meanwhile, the arc light sensor is further connected with a damping assembly, and the damping assembly can protect the arc light sensor moving rapidly. By arranging the movable arc light sensor, timelyand effective arc generation detection is guaranteed, safe power utilization, especially safety of large-scale industrial power utilization, is guaranteed, and potential safety hazards are reduced.
Owner:江苏金和电气有限公司
Three-phase four-wire system electric energy quantifier with overload protection
InactiveCN101294994AWon't burn outAvoid damageCurrent/voltage measurementArrangements responsive to excess voltageOvervoltageDisplay device
The invention relates to a three phase four wire system electric energy quantifier which has overload protection, belonging to the electric energy quantifier. A voltage comparator of the electric energy quantifier is connected with a central controller; a flow detector is simultaneously connected with the central controller and a meter reading control module; the central controller is simultaneously connected with a displayer, the meter reading control module and a broken circuit controller; and a power supply is connected with the central controller, the voltage comparator, the broken circuit controller, the flow detector and the meter reading control module. The electric energy quantifier has the advantages that: in the distribution circuit of electric energy metering, the electric energy quantifier has the overvoltage protecting function, a bipolar bi-wire leakage circuit breaker with overvoltage protection is arranged at the master circuit breaker of an in-house distribution box, which can automatically cut off electricity when the voltage exceeds a preset setting range and can automatically restore power supply within a preset interval time, thus guaranteeing the safe electricity use of electric appliances; the electric energy quantifier has good technology, safe and reliable work, convenient use, reasonable manufacturing and material selection, low cost and wide application range.
Owner:杜兆兴
Connector adopted by vertical elbow bus duct and processing technology thereof
PendingCN107910837AEnsure safe use of electricityEnough contact areaTotally enclosed bus-bar installationsElectrical conductorElectrical connection
The invention relates to a connector adopted by a vertical elbow bus duct and a processing technology thereof, and belongs to the technical field of power distribution equipment. The connector adoptedby the vertical elbow bus duct comprises a transverse conductor, a vertical conductor, a transverse shell, a vertical shell and an L-shaped connecting plate, wherein the transverse conductor and thevertical conductor are fixedly connected through bolts, the transverse shell and the vertical shell are respectively arranged outside the transverse conductor and the vertical conductor, and the transverse shell and the vertical shell are fixedly connected through the L-shaped connecting plate. According to the invention, the connector is adopted at a welding part, the connection is completed through the double-side contact special connector, the two conductors are connected through the high-strength torque bolts, enough contact area and reliable electrical connection are ensured, and dual purposes of loose prevention and insulation are achieved by using a bus body. The connector can effectively ensure safe power utilization.
Owner:JIANGSU HUAQIANG ELECTRIC EQUIP
Intelligent detection and early warning system for contact engagement fault of draw-out type circuit breaker
PendingCN113281643AReduced commissioning timeImprove work efficiencyMachine part testingRadiation pyrometryEarly warning systemControl engineering
The invention relates to the technical field of circuit breaker detection, and discloses an intelligent detection and early warning system for contact engagement fault of a draw-out type circuit breaker, which comprises a circuit breaker cabinet body, an intelligent terminal and a camera. The interior of the circuit breaker cabinet body is slidably connected with a circuit breaker handcart; one side of the circuit breaker handcart is fixedly connected with a contact arm; one end of the contact arm is fixedly connected with a moving contact; the interior of the circuit breaker cabinet body is fixedly connected with a contact box; and the interior of the contact box is fixedly connected with a static contact. Compared with an infrared six-point temperature measurement method, the method is more direct, more accurate and more timely, is wider in application, plays a role in an operation stage, also plays a role in a factory production debugging stage and an on-site installation debugging stage of the switch cabinet, greatly shortens the debugging time, and improves the working efficiency. The system can be widely applied to draw-out type switch cabinets and circuit breakers with contact between moving and static contacts, switching stations and transformer substations with the voltage class from 0.4 KV to 35 KV, and the like.
Owner:SHAANXI XI GAO SWITCHGEAR
New energy vehicle local equalization charging system
InactiveCN105162204AReal-time adjustment of charging strategyEnsure safe use of electricityBatteries circuit arrangementsElectric powerLow voltageNew energy
The invention relates to a new energy vehicle local equalization charging system, which adopts a DC bus power supply topological network, wherein the DC bus power supply topological network comprises a power distribution device, charging stations, a bidirectional AC / DC module and an equalization charging module; the power distribution device is connected with a high-voltage power grid, divided into two paths after voltage transformation and filtering and then connected with subsequence nodes; one path is connected to the equalization charging module, the other path is connected to a low-voltage power grid; the low-voltage power grid is connected with the bidirectional AC / DC module through a cable; the equalization charging module is connected with the bidirectional AC / DC module through a cable; a data acquisition unit, a CAN bus, a battery BMS system and a BMS intelligent analysis unit are arranged inside the equalization charging module; and the bidirectional AC / DC module is connected with the charging stations through a DC bus, and a charging machine is arranged inside each charging station. The new energy vehicle local equalization charging system can detect output current and voltage of a matched low-voltage power distribution cabinet and electricity consumption of the current charging machine in real time, and notifies the corresponding charging machine to adjust the charging strategy through an internal equalization strategy once detecting that the output current exceeds a quota limit.
Owner:GUANGDONG ANHEWEI ELECTRIC POWER CONSTR CO LTD
Aerial electricity receiver
InactiveCN103906332AAvoid harmHigh degree of automationNatural electricityElectricityElectrical resistance and conductance
The invention relates to an aerial electricity receiver comprising a lightning rod (1), a transformer (2), a piezoresistor (3) and a spark gap (4). The lightning rod (1) is connected to the transformer (2). The transformer (2), the spark gap (4) and the piezoresistor (3) are serially connected in sequence. A plurality of schemes providing the aerial electricity receiver are provided; the aerial electricity receiver is capable of automatically collecting cloud charge and converting into available electricity; if lightning of excessively high voltage is collected, the aerial electricity receiver automatically disconnects with an electric device and guides the lightning to the ground, and the excessively high voltage endangering people's life and property safety is prevented.
Owner:BEIJING UNION UNIVERSITY
Conical plug pin and plug bush for socket and plug
InactiveCN104409898AIncrease contactSolve the problem of high contact resistanceCoupling contact membersWhole bodyEngineering
The invention relates to plug pins and plug bushes, particularly to a conical plug pin and a plug bush for a socket and a plug, and solves the problems that the conventional plug pin is in imprecision contact with the plug bush, high in contact resistance, small in effective contact area and easy to heat to be burned. The conical plug pin and the plug bush for the socket and the plug comprise a plug bush part and a plug pin part, wherein the plug bush part comprises a conical sleeve and a disk-shaped connecting plate; the plug pin part comprises a conical pin, a disk-shaped positioning table and a cylindrical connecting head; the thinner end of the conical sleeve is closed, and the thicker end of the conical sleeve is open; the center of the upper plate surface of the disk-shaped connecting plate is fixed with the thinner end surface of the conical sleeve to form a whole body; the thinner end of the conical pin is movably inserted and connected with the cavity of the conical sleeve; the center of the lower table surface of the disk-shaped positioning table is fixed with the thicker end face of the conical pin to form a whole body; the lower end face of the cylindrical connecting head is fixed with the center of the upper table surface of the disk-shaped positioning table to form a whole body. The conical plug pin and the plug bush disclosed by the invention can be applied to various electricity consuming occasions.
Owner:JINCHENG POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER +1
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