201results about How to "Avoid electrical accidents" patented technology

The invention discloses a drying agent for an mine underground electric apparatus and a preparation method of the drying agent, belonging to the field of drying agent, wherein macromolecule water absorbent, compound of silicon or calcium and alkali halide or modified starch are mixed so as to prepare the powdery draying agent according to part by weight; the macromolecule water absorbent is 35-70 parts; the compound of silicon or calcium is 25-55 parts; the alkali halide or a mixture of the alkali halide and the modified starch is 10-15 parts; the grain size of the macromolecule water absorbent is 0.20-0.40mm; and the drying agent is powdery. According to the invention, raw material is wide in source and is purchased easily on the market; the drying agent is used for high/low-voltage power supply appliances worked on a mine underground high-humidity condition (RH=80-100%); the dry powder resists 6000V voltage or does not be broken down under voltage of 3000V; when moisture rate reaches to 1g/g, the dry powder resists 2500V voltage or does not be broken down under voltage of 1200V.

The invention relates to a direct lead wire grounding wire mounting and dismounting device, which consists of a lead wire clamping device and a remote operation rod, wherein the remote operation rod consists of a telescopic rod and a center position limiting hole, the center position limiting hole is formed at the top end of the telescopic rod and is matched with the tail end part of a transverse transmission rod, and the side wall of the center position limiting hole is provided with a position limiting groove. When the direct lead wire grounding wire mounting and dismounting device is used, the electric power accident can be effectively avoided, the potential safety hazard is eliminated, meanwhile, the work can be completed only by one worker, meanwhile, the efficiency is greatly improved, and the misoperation phenomenon is reduced. When a switch pull-rod is used for mounting and dismounting a grounding wire on a direct lead wire, the switch pull-rod needs to incline to a certain angle from a ground wire head, so the risk of operator injury or disconnecting link porcelain bottle damage through crashing due to the disconnection between the ground wire head and the switch pull-rod can easily occur. The direct lead wire grounding wire mounting and dismounting device has the advantages that the connection between a special switch pull-rod and the ground wire head is reliable, and under the main situation of advocating personnel reduction and efficiency enhancement, the operation time is shortened.

The embodiment of the invention discloses a method and system for monitoring a high-voltage circuit breaker operating mechanism. By determining a stress detection point of the high-voltage circuit breaker operating mechanism and arranging a stress sensor according to the stress detection point, stress signals of the high-voltage circuit breaker operating mechanism are collected; since the stress detection point is a detection point which is judged through simulation analysis to be subject to failures very easily, stress signal colleting efficiency and precision are improved, and technicians can obtain a stress state of the high-voltage circuit breaker operating mechanism accurately conveniently. A remote monitoring and analysis system receives the stress signals having undergone calculation, amplification, filtering and digital-to-analog conversion and performs stress analysis and can timely learn about stress results of the operating mechanism and have a very high uptodate state, stress analysis is performed, health conditions of the operating mechanism are further mastered comprehensively and accurately, so as to be favorable for taking corresponding maintenance measures timely; therefore, electric power accidents are avoided, and the safety of an electric power system is guaranteed.

The invention relates to the technical field of electric power grids,and discloses an open fuse with a fusible core easy to replace. The open fuse comprises a shell,wherein the left end and the rightend of the shell are fixedly provided with a wire outlet port and a wire inlet port respectively,a rotating disc is hinged to the interior of the shell,and a rotating shaft matched with the shell is installed on the rotating disc; a rotating handle is arranged at the tail end of the rotating shaft,and detachable movable ceramic units are inserted in the upper portion of the rotating disc in an array at equal intervals. According to the open fuse,power can be quickly recovered through the rotating disc and a plurality of replaceable fuse wires installed on the rotating disc; besides,the time for replacing the fuse wires can not influence the electric power recovery speed; meanwhile,the replaceable fuse wire area is isolated from an internal circuit,and electric power accidents are avoided during replacement. The fuse can also be used as a switch blade,and can directly skip the fuse wires and be connected with the circuit so that various use occasions and emergency states can be effectively dealt with,the application range is expanded,and practicability is improved.

The invention discloses a method for detecting an abnormal temperature point of an arrester. The method comprises the following steps of acquiring an arrester infrared image marked with a detection area, and acquiring temperature values corresponding to all pixel points in the detection area of the arrester infrared image to form a temperature value set; traversing the temperature value set, determining pixel points corresponding to the temperature values which are higher than an average value in the temperature value set to be target pixel points, and obtaining a target pixel point set; dividing the target pixel points in the target pixel point set into a plurality of pixel groups according to an Euclidean distance among the different target pixel points; and marking an area covered by the pixel group whose number of pixel points exceeds a preset threshold as an abnormal temperature point. By using the method, automatic detection of the abnormal temperature point of the arrester is realized, detection efficiency and accuracy are increased, and an electric power accident can be avoided to some extent. A device and equipment for detecting the abnormal temperature point of the arrester, and a readable storage medium disclosed in the invention correspondingly have the same technical effects.

The invention discloses a crosslinked polyethylene high-voltage cable on-line monitoring and early warning system which is mainly composed of an on-site data collection device, a data transmission network and a monitoring center. Various state data of a sensor sampling high-voltage cable and the environment where the sensor sampling high-voltage cable is located are collected by the on-site data collection device through measurement sensors of all function modules, and then reported to an intelligent data management platform of the monitoring center through the data transmission network. The crosslinked polyethylene high-voltage cable on-line monitoring and early warning system has comprehensive functions, is capable of achieving comprehensive, real-time and automatic monitoring and early warning, and meanwhile is compact in structure, stable, reliable and convenient to install and maintain. When the crosslinked polyethylene high-voltage cable on-line monitoring and early warning system is applied, high-voltage cable operation maintainers can well know the state of the cable and the state of the environment where the cable operates at any time and find defects in time, and therefore power accidents are avoided.

The invention provides an electric energy monitoring system and method, and relates to the technical field of electric powers, and the system comprises a cloud data server, a plurality of intelligentacquisition terminals, and a monitoring platform, wherein each intelligent acquisition terminal is used for acquiring electricity meter parameters and power utilization data of a target user and sending the data to the cloud data server in real time; the cloud data server is used for storing the electricity meter parameters and the power utilization data; and the monitoring platform is used for obtaining the historical power utilization data of the target user from the cloud data server and analyzing and processing the historical power utilization data to obtain a processing result so as to monitor the power utilization condition of the target user according to the processing result. According to the embodiment of the invention, the electric meter parameters and the power utilization dataof the user are automatically uploaded through the intelligent acquisition terminals, manual electric meter reading is not needed, the influence of human factors is avoided, the error rate of the power utilization data is reduced, the electric meter data of the user can be acquired more timely, and the data acquisition accuracy is also improved.

The invention discloses a protective method for electrical fire hazards based on three-proofing means. The method comprises three-proofing means of manual proofing, material proofing and technical proofing. An electrical management doctor operation mode is adopted and dynamic monitoring is implemented to ensure electrical safety. The material proofing ensures real-time protection when equipment and lines have faults. The manual proofing enables distribution lines and equipment to be kept in good operation conditions by regular inspection and maintenance. The technical proofing combines the Internet, which can timely upload electric energy information and electrical environments to a management center. Through the three-proofing means, the electrical accidents are effectively avoided, the occurrence of electrical fire hazards is lowered, the needs of users are met, and popularization and application in industries are facilitated.

The cooling oil in the power transformer is educed out and connected to heat exchanger so as to constitute closed loop 1. Cooling oil conspecific to the cooling oil as cooling medium of heat exchanger in the power transformer is adopted so as to constitute closed loop 2. Dedicated cooling device includes heat exchanger and expansion tanks. Through each circulating oil pump, hot end and cold end of the heat exchanger are connected to oil cooling port and cooling source. An expansion tank is cascaded in loop between cold end and cold source of heat exchanger as well as in loop between hot end and heat load respectively. The invention can prevent accident of electric power from happening effectively, and saves water resource.

The invention relates to an outdoor terminal box with solar dehumidifying and cooling functions, and belongs to the technical field of electrical network. The terminal box comprises a box body, and is characterized in that the top of the box body is provided with a solar cell panel, the solar cell panel is connected with a storage battery, the storage battery is connected with an exhausting system and a heating system, the exhausting system and the heating system are connected with a microprocessor, and the microprocessor is connected with an external temperature measuring system, an internal temperature measuring system, an internal humidity measuring system and an external humidity measuring system. The outdoor terminal box has the advantages that the solar cell panel is used to generate and supply power, so that energy is saved and the environment is protected; the intelligent degree of the terminal box is improved due to onsite alarm and scheduling and real-time monitoring functions; and the internal temperature and humidity of the outdoor terminal box is visible and controllable, faults of insulation decrease and short circuit caused by moisture and high temperature are reduced, and power accidents can be prevented.

The invention discloses a power transmission and transformation intelligent fault monitoring method. The method includes: collecting current signals on a power transmission line through an induction coil, and forming a sampling signal; subjecting the sampling signal to analog-digital conversion through a rectifier circuit to form a digital signal, sending the digital signal out through a wireless signal, and input the digital signal into a database of a monitoring host for signal storage; comparing the digital signal with information stored in the database for judgment; judging fault position and fault type through a data analysis device, wherein an output end of the monitoring host is connected with an alarming device and a fault display device, the fault display device displays the fault type and position or sends the same to maintenance personnel for fault handling through short messages or Wechat messages, and the maintenance personnel can be guided to quickly find a fault point once a fault appears. The method is conducive to quickly and timely finding lines with faults, ensuring safe running of the whole power transmission line and reducing economic loss caused by the faults of the power transmission line.

Disclosed is a photovoltaic pre-assembled transformer substation apparatus. The photovoltaic pre-assembled transformer substation apparatus comprises an inverter mounting region, a transformer mounting region and a high-voltage switch cabinet which are packaged together through a shell; inverters are mounted in the inverter mounting region, and a communication cabinet and a transformer are mountedin the transformer mounting region; a thermal insulation layer is arranged between the inverter mounting region and the transformer mounting region, and between the transformer mounting region and the high-voltage switch cabinet separately; the inverters, the transformer and the high-voltage switch cabinet are connected through a primary wire; a ventilating port is formed in the shell; a controlsystem and an alarm are arranged in the shell; the control system comprises a temperature control system, a humidity control system, a video monitoring system and a smoke monitoring system; and the control system transmits all kinds of collected data to a main control room through the communication cabinet. By virtue of the photovoltaic pre-assembled transformer substation apparatus, the inverters, the transformer and the high-voltage switch cabinet are integrated effectively, so that space dimension is reduced and the mounting mode is simplified.

The invention discloses a remote online anti-inclining monitoring system of a tower. The system comprises a monitoring center, a monitoring module, a control module, a communication module, a power supply module and a balance adjustment module. The monitoring module, the control module, the communication module and the power supply module are arranged on a substrate of the tower. The balance adjustment module is arranged in the substrate under the lower end of the tower. The power supply module comprises a storage battery and an electricity taking structure connected with the storage battery.The electricity taking structure comprises an energy taking coil, a front end impacting protection circuit, a rectification filtering circuit and a DC/DC conversion module. The energy taking coil, thefront end impacting protection circuit, the rectification filtering circuit and the DC/DC conversion module are successively connected. According to the invention, inclination of the circuit tower iswell monitored and can be monitored all day in a self power supplying manner; inclination information of the tower can be sent to the monitoring center, so rapid reactions are achieved; and through the special design of the substrate, the monitoring system has certain anti-inclining function, so tower inclination is prevented from causing bigger electric power accidents, enough time is obtained for arrival of repairing workers and loss caused by the accidents is reduced.

The invention discloses a synthetic fuse with hard shielding protective case, which consists of insulating column (1) and fuse with insulating case (2), wherein two ends of insulating column connects two ends of fuse and touching point separately; the pull-ring is fixed on the top of insulating case, whose two ends connect touching point with ground bar connecting lower touching point; the fuse contains two hard shielding protective case (3) on two ends of upper and lower insulating column; the hard shielding protective case contains two side-hinged half-case (31) with fuse shape; the semi-circle flute is set on the half case hinged connecting end; two half-case connects to form a chuckable column on two ends of insulating column; the screw-thread earhole is opened on the case surface in connection with bolt. The invention solves impoundment problem, which is reliable to operate and convenient to assemble.

The invention discloses a low-voltage distribution system with a leakage protection device, belonging to the technical field of low-volatile distribution equipment. The low-voltage distribution system comprises a master switch, a master leakage protector, a distribution transformer and a branch switch distribution box, wherein a branch leakage protector is connected to a branch in the branch switch distribution box. The low-voltage distribution system can perform leakage protection on each independent low-voltage branch; and the power supply of other branches can not be influenced even if one branch has a leakage failure, thereby greatly improving the power supply safety and reliability.

The invention discloses an intelligent load limiting controller, comprising a processor, a load controlling relay which is connected to a processor, a temperature detector connected to the processor, a phase detector connected to the processor, a current detector connected to the processor, a voltage detector connected to the processor, and a power supply connected to the processor. The intelligent load limiting controller can overcome a shortcoming that a malignant load identification device on the market is simple in function and easy to crack, reduces workload of staff, and effectively prevents electric safety accidents from happening.

The invention discloses a grounding sequence lock. The grounding sequence lock comprises a grounding connecting piece used for being connected with a grounding grid, wherein the grounding connecting piece is provided with a connecting piece, a grounding clamp is connected with a grounding rod through a grounding wire, the grounding rod is provided with a grounding hook, a hinge shaft is arranged on the side face of the connecting section, and a pressure control rod is hinged to the hinge shaft. A grounding control lock is arranged on the grounding connecting piece, a rotating shaft of the grounding control lock can rotated to be switched between an unlocking position and a locking position, an unlocking key can be pulled out only in the unlocking position, and the rotating shaft of the grounding control lock is connected with a grounding control hook. A spring is arranged between the pressure control rod and the grounding connecting piece, a three-phase-interlocking locking device is arranged on the grounding rod, and the interlocking key further can open or lock the three-phase-interlocking locking device. The grounding sequence lock has the advantages of being convenient to install, flexible in use and capable of controlling and guiding a grounding operator to accurately perform grounding operation, eliminates potential safety hazards, meets sequence requirements for assembling and disassembling the grounding wire through safe technical measures and meets needs for site operation.

The invention belongs to the field of communication power-supply distribution equipment, and in particular relates to a microswitch mechanical interlocking mechanism. The mechanism comprises a support bracket, at least two micro air switches, a sliding support and a sliding clamping plate, wherein the micro air switches are arranged on the support bracket, the sliding support is arranged on the micro air switches, the sliding clamping plate is arranged on the sliding support and covers the one or more micro air switches, the micro air switches and the sliding clamping plate are respectively provided with an inhibiting device which is used for limiting the sliding of the sliding clamping plate left and right, and the sliding clamping plate slides on the sliding support as well as locks and covers the one or more micro air switches by the limiting device so that the one or more covered micro air switches is/are in a switching-off state. The mechanism is compact in structure and easy to install and operate, and can avoid power utilization accidents caused by switching on input power supplies simultaneously.

The invention discloses a pressing plate entering and exiting state detection device and a pressing plate misjudgment preventing system, and belongs to the technical field of electric power equipment.A pressing plate comprises a first terminal, a second terminal and a pressing plate connecting piece for achieving connection and disconnection of the first terminal and the second terminal. The detection device comprises a fit accessory which is fixed to the pressing plate connecting piece and moves along with the pressing plate connecting piece, a magnet sensing accessory which is in magnetic fit with the fit accessory and moves up and down along with movement of the fit accessory and detection sensors which are in sensing fit with the sensing accessory, the detection sensors comprise the first detection sensor for detecting the entering state of the pressing plate and the second detection sensor for detecting the exiting state of the pressing plate, and the magnet sensing accessory isin sensing fit with the first detection sensor or the second detection sensor in an alternative mode. The pressing plate misjudgment preventing system comprises the pressing plate entering and exitingstate detection device. The detection device is convenient to operate, capable of saving time and energy, good in area compatibility, high in accuracy and reliability and capable of decreasing the misjudgment ratio.