85results about How to "Guarantee safe operation" patented technology

The invention provides a train track fastener defect detection method. The method comprises the following steps of constructing a Faster R-CNN network model, wherein the Faster R-CNN network model comprises a region generation network RPN and a fast region convolutional neural network Fast R-CNN, and the network initialization mode adopts pre-trained parameter initialization of similar tasks, andthen the Faster R-CNN network model is trained by using training set data; shooting and acquiring a fastener image on the subway line through photographing equipment; and inputting the fastener imageinto the trained Faster R-CNN network model, extracting a fastener area in the fastener image by the Faster R-CNN network model by using convolution operation and pooling operation, and performing defect type detection on the fastener area by using a loss function. According to the method, through the combination of the region generation network and the fast region convolutional neural network, the autonomous learning and the feature extraction of the training picture are carried out, so that fastener positioning and defect automatic detection can be carried out on the acquired large-size image, the intelligent degree is higher, the realization efficiency is higher, and the model applicability is stronger.

The invention relates to judging methods of the single phase-to-earth fault and the resonance overvoltage fault in a small current grounding system. When the system has a single phase-to-earth fault, the voltage of the earthed phase is reduced, the voltage of the non-earthed phase is increased; if the earth point is metallic grounded, the voltage of the earthed phase is zero, the voltages of the other two phases are increased to the line voltage and the brightness of a harmonic elimination lamp arranged on a PT open-delta winding is higher than 10% of the brightness under the rated voltage; when the system has a resonance fault, the voltages of the three phases are higher than the line voltage and change irregularly and the harmonic elimination lamp has different brightnesses according to different harmonic degrees; and if the voltage of one phase is reduced, the voltages of the other two phases are not higher than the line voltage and the line voltage is normal, the system is judged to have a single phase-to-earth fault; and when the voltmeter has an irregular swinging phenomenon, the system has a resonance overvoltage fault. By using the methods, the common faults of the small current system can be judged easily and practically; and the methods are accurate, reliable, convenient and practical.

The invention relates to a space solar cell module self-reconfiguration system for a space power station and belongs to the energy technical field, wherein, a sensor module collects a sensor signal on a space solar cell module and performs the photoelectric conversion and the analog-to-digital conversion; the converted digital quantity is taken as the information input of an embedded type controller module which performs the diagnosis, the fault tolerance and the planning processes and sends a drive instruction to a drive module, thereby controlling the corresponding space solar cell module to move; a power supply module stores the energy of the photoelectric conversion of the solar cell to supply power for other modules and transmits the electrical energy to the solar power station. The space solar cell module self-reconfiguration system for a space power station realizes the self repairing of the novel space solar cell module of the space power station in order to avoid the lost caused by the fact that the cell module is damaged suddenly and to improve the reliability of the space solar cell module of the space power station.

The invention discloses a highway electric vehicle integrated emergency charging rescue system and method thereof, comprising a relief vehicle. The relief vehicle is provided with a control center and an energy storage center, the control center is communicated with a vehicle terminal of the rescued vehicle through a mobile network; the vehicle terminal receives information from the control center, also can send rescue information to the control center through the mobile data network; the vehicle terminal of the rescued vehicle uploads the operating data during the running process of the rescued vehicle to the control center in real-time, and the control center analysis and determines the rescued vehicle and make corresponding decision based on the operating data during the running process of the rescued vehicle, then the energy storage center is utilized for achieving the emergency charging rescue of the rescued vehicle. The highway electric vehicle integrated emergency charging rescue system and method has the advantages that the problem of highway electric vehicle integrated emergency charging rescue is effectively solved, the effective guarantee of the construction and operation of the electric vehicle charging facilities is provided, and the highway electric vehicle integrated emergency charging rescue system and method also has good social effect.

The invention discloses a detection device for continuously welded rails. The device comprises: an ultrasonic guided wave transmitting probe, ultrasonic guided wave receiving probes and a data analysis module. The front side and back side of the ultrasonic guided wave transmitting probe are respectively provided with a set of ultrasonic guided wave receiving probes, and each set of ultrasonic guided wave receiving probes includes two ultrasonic guided wave receiving probes arranged along the rail direction, and the detected circuit is determined according to the signal receiving sequence of the two ultrasonic guided wave receiving probes arranged along the rail direction. The output ends of each set of ultrasonic guided wave receiving probes are connected to the data analysis module, which is used for stress and rail breakpoint detection according to the ultrasonic guided wave signals received by the ultrasonic guided wave receiving probes. With the device disclosed in the invention, the detection accuracy and efficiency are improved, and the driving safety is ensured.

The invention relates to an automatic tripping device and method adopting optical-fiber infrared control over the thermal failure of a power isolating switch. The device comprises an isolating switch, a circuit breaker, an infrared temperature measuring sensor with an infrared temperature measuring probe, an AD converter, a tripping device, an optical fiber and a control cable, wherein the isolating switch and the circuit breaker are electrically connected through a high-voltage conducting wire, the infrared temperature measuring sensor is used for detecting the contact temperature when the isolating switch is turned on, and the tripping device is used for controlling the circuit breaker to trip on load; the tripping device comprises a tripping coil and a control module which is connected with the tripping coil through the control cable. The contact temperature when the isolating switch is turned on is detected by the infrared temperature measuring sensor with the infrared temperature measuring probe in real time, the temperature data is compared with a threshold temperature set in the control module, whether the contact temperature is abnormal or not is judged, and on-off of the circuit breaker is controlled, so that on-off of the isolating switch is control indirectly, and power accidents are effectively prevented from occurring.

The invention discloses a method of automatically detecting joint twitching of a steel wire core conveyor belt. The method includes the steps of a, detecting joints in a joint image to be detected and a reference joint image; b, subjecting the joint image to be detected to surf feature extraction, performing feature matching according to feature values, and finding a mapping relation between the joint image and the reference joint image to obtain a normalization coefficient; c, according to the normalization coefficient, performing twitching analytical calculation to obtain a twitching distance. The method has the advantages that calculation reliability of the normalization coefficient is guaranteed, even when the belt deviates or changes in speed, accuracy of joint distance calculation can be ensured according to the normalization coefficient as long as joint matching is correct, precision of steel wire joint twitching detection is improved, the problem that calculating twitches of steel wire joints in the belt is inaccurate is solved, the method adapts to speed changing and shifting of the belt, and the method is significant to ensuring operational safety of a conveying system.

A chain-type boiler backfire protection feed apparatus for biomass combustion relates to a chain-type boiler backfire protection feed apparatus. The invention resolves the problem in prior chain-type boiler in direct biomass combustion that the biomass might be burned in buckets due to backfire caused by high biomass combustion speed. The invention comprises a biomass lower bucket (1), a biomass upper bucket (2), an articulate vane (3) and a motor (4); wherein, the biomass upper bucket (2) is arranged on the left end face of the upper-end of the biomass lower bucket (1); moreover, the biomass lower bucket (1) communicates with the biomass upper bucket (2); the articulate vane (3) reaches the biomass lower bucket (1) and the biomass upper bucket (2) through the left end face on the lower-end of the biomass upper bucket (2); the left end of the articulate vane (3) is linked to the motor (4). The invention simultaneously utilizes the multi-stage with feed the biomass upper bucket, the biomass lower bucket and the articulate vane, so as to avoid backfire due to high combustion speed for biomass fuels, so that the biomass is burned in the buckets; therefore, the invention can guarantee the safety of boilers.

The invention provides a diagnosis method and device of a heat dissipation system, a vehicle, electronic equipment and a storage medium. The method comprises the following steps: determining a vehicle operating state, and initiating a diagnostic program, collecting current environment temperature, temperature of gas passing through an intercooler and the current water temperature of an engine; and determining the water temperature of the engine under full load according to the current environment temperature, the temperature of the gas passing through the intercooler, the current water temperature of the engine, a preset ratio of the heat dissipation power of the radiator, the ratio sum of the heat dissipation power of the intercooler and the environment temperature under full load, anddetermining whether the heat dissipation system breaks down or not according to the water temperature of the engine under full load. The technical problem that in the prior art, the timeliness of a diagnosis mode is poor is solved, and meanwhile due to the fact that whether the heat dissipation system breaks down or not can be diagnosed in real time, safe operation of a vehicle is guaranteed.

The invention relates to the technical field of virus protection and provides an application control-based anti-virus attack realization method and system. The method comprises the steps of judging whether a client user is a trusted user or not when an application is detected to be started; when the client user is the trusted user, controlling the application to be allowed to be started; when theclient user is a non trusted user, judging the trust level of the application; when the trust level of the application is a blacklist, controlling the application to be prohibited from being started;and when the trust level of the application is a gray list and a white list, controlling the application to be allowed to be started. The control on computer system applications is realized; and the virus attack is subjected to security defense, so that the security operation of a computer system is guaranteed.

The invention discloses a laser standard scribing method for a low-speed diesel engine frame for a ship. An upper plane, a middle plane and a lower plane are arranged out of the frame; and multiple frontal guide boards symmetrically and uniformly distributed and side guide boards perpendicular to the frontal guide boards are longitudinally arranged in the frame. The method is characterized in that a laser ray is set as a measurement reference line; and an upper plane processing line, a middle plane processing line, a lower plane processing line and a longitudinal center line and a transverse center line, serving as processing positioning reference lines, of the frame are once scribed in the frontal positions of the frame to guarantee the uniformity of processing allowances of the upper plane, the middle plane, the lower plane, the frontal guide boards and the side guide boards. The method achieves the effects of automatic alignment of the reference lines, low labor intensity, high measurement precision, high working efficiency and low potential safety hazard, realizes once completion of allowance detection and scribing of such processing parts as the upper, middle and lower planes, the frontal guide boards and the side guide boards of the frame in the frontal positions of the frame, and is suitable for the scribing operation of large diesel engine frames and large parts.

The invention discloses a helium ion chromatographic analysis method for a SF6 (sulfur hexafluoride) decomposition product. The method comprises the following steps: separating components of a sample by adopting a combination of four chromatographic columns, comprising a silica gel column, a first Porapak Q column, a second Porapak Q column and a Gaspro capillary column; performing component cutting separation and control by adopting for valves comprising a first valve, a second valve, a third valve and a fourth valve, and respectively analyzing and testing the separated sample by adopting a first PDD detector and a second PDD detector. According to the analysis method, the SF6 decomposition products, such as H2, O2, N2, CO, CH4, CO2, COS, H2S, SOF2, CS2 and other compounds, which cannot be accurately detected by a traditional analysis method can be simultaneously and accurately detected, and the SF6 decomposition products are comprehensively and accurately analyzed, so that the internal operating conditions of SF6 gas insulated equipment are accurately judged, and the safety operation of electrical equipment is guaranteed.

The invention provides a closed-loop management system and method for laboratory dangerous chemicals. The system comprises an intelligent positioning system comprising an intelligent positioning tag,an intelligent tag hairpin, an intelligent tag identification device and an intelligent tag handheld identification device; an intelligent camera acquisition system comprising an image pickup device,a memory, and a computer program stored on the memory, wherein the computer program is used for real-time monitoring a laboratory position opening and closing door signal, triggering the camera deviceto take a picture or video recording, and sending the collected signal to a server in real-time. The problems of low management efficiency, incomplete supervision, human factors, potential safety hazards and waste of resources in the existing laboratory management are solved.

The invention provides an electric power trip statistics method. The method comprises the steps of 100, obtaining weather information; 200, analyzing the weather information; 300, performing statistics on trip information; 400, analyzing the trip information; and 500, giving a trip warning. According to the method, a probability of disaster weather in a specific time segment can be predicted according to historical weather information of a target region, a trip information statistics method is correspondingly adjusted, and the trip warning is given, so that the safety of power utilization is ensured.

The invention discloses neutral-point grounding control equipment of a medium-voltage power grid. The neutral-point grounding control equipment comprises a bus voltage transformer, a grounding transformer, a circuit zero-sequence current transformer and a controller, wherein the bus voltage transformer is connected with a bus and the controller, the grounding transformer is connected with the busand an arc extinguishing coil, a neutral point current transformer and a neutral point voltage transformer are arranged between the grounding transformer and the arc extinguishing coil and are connected with the controller, a branch is arranged between the neutral voltage transformer and the arc extinguishing coil and is connected with a resistor by a switch connected with the controller, the controller is connected with at least two branch lines by the circuit zero-sequence current transformer, and the branch lies are connected with the bus. The advantages of two grounding modes of neutral-point resonant grounding and resistance grounding are combined, the advantage that a line can be accurately selected by resistance grounding is maintained, residual current of a grounding point also canbe reduced, an arc light grounding overvoltage is limited, an appropriate working mode can be selected according to different conditions of a short-term grounding fault or a permanent grounding fault, the safety running of the line is guaranteed, and the power supply reliability is also improved.

The invention provides a tower foundation negative-pressure construction method for a river channel. The quality of a tower foundation can be improved, and a tower can be stable and safe in the use process. The method comprises steps as follows: a dam is constructed on the upstream of a place where the river channel is to be constructed for drainage; construction is performed in the place where the river channel is to be constructed in a natural sloping heavy-excavation manner, and a water pump is used for draining river water seeping into a foundation pit to the downstream of the foundation pit in the excavation process; a square die formed by splicing four templates two by two is put in the center of the bottom surface of the foundation pit; the water pump is used for draining the water in the die and discharging the water to the downstream of the foundation pit; high-grade concrete is applied to the inner bottom surface of the die for blocking; a water pumping pipe of the water pump is put in the foundation pit outside the die, so that river water seeping into the foundation pit outside the die can be continuously discharged to the downstream of the foundation pit, and the water pumping port is located in the position 1 / 3-1 / 2 of the height of the die; the concrete is directly cast into the die after a steel reinforcement cage is put into the die and vibrated with a vibrator; the concrete is cured.

The invention discloses a monitor and control method of the heat-removal system and its device and realizes the speed control and speed detect to the fans in the heat-removal system of the communication facilities. The device includes a central control unit and the speed control device of the fans. The central control unit is integrated in the CPU of control panel of the communication facility. The steps of using the device to realize the invention include: the CPU outputs the speed control data of the fans; obtain the control signal to control the speed of the fans in according to the speed control data of the fans. Using the invention, we can make use of the programmable logic chip resource to realize the speed control and speed detect to the fans in the heat-removal system of the communication facilities, without increasing the cost of the hardwares, increase the work efficiency of the CPU and guarantee the safe operation of the communication facilities.

The invention discloses cable monitoring equipment and a cable monitoring method. The cable monitoring equipment comprises a sensor, a monitoring terminal and an alarm device, wherein the sensor is used for sensing the position state of a cable; the monitoring terminal is connected with the sensor through a sensor interface, and sends an alarm instruction to the alarm device under the circumstancethat change of the sensed position state of the cable exceeds a predetermined threshold within a predetermined time; the alarm device is communicated with the monitoring terminal, and alarms based onthe received alarm instruction. Through the cable monitoring equipment and the cable monitoring method, the technical problems that in the related art, safe operation of the cable cannot be guaranteed due to no later monitoring is solved.

The invention relates to a multi-point ground fault diagnosis and disposal method for a clamp of a large transformer. A frame-type technical scheme is adopted for how to carry out multi-point ground fault diagnosis and disposal of the clamp when the ground current of the clamp of the transformer exceeds a regulation. The method comprises the steps that when the fact that the ground lead current ofthe transformer clamp exceeds the requirement of the regulation is detected, diagnosis and disposal are started; a measurement period is shortened, and periodic ground current measuring of the clampis continuously carried out; if the ground current of the clamp seriously exceeds the standard or maintains a high level, oil chromatographic test analysis and inference are carried out; and accordingto the condition of oil chromatographic test analysis, power outage disposal or temporary disposal without power outage is arranged, or further manhole inspection or lifting hood inspection is arranged. The method provided by the invention is clear and systematic, has a wide application scope, greatly improves the decision-making efficiency and judgment accuracy of electric power operation and maintenance personnel, helps to prevent the deterioration of the multi-point ground fault of the clamp, and ensures safe and stable operation of the transformer.

Provided is an in-depot examination device for center node equipment. A protocol analysis module, a data encoding and decoding module and a man-machine interaction module are connected to display to in-depot examination personnel the current working state, fault and other related equipment information returned by a piece of examined center node equipment. A data communication module adopts a standard network data transmission protocol, and is connected with an auxiliary maintenance system of the center node equipment to realize data link building. A data storage module stores the examination process and equipment examination information. A center node equipment end self-examination module is a sub function module of the auxiliary maintenance system of the center node equipment, and the function module can complete internal self-examination on the functions of internal units of the center node equipment and return self-examination results. By adopting the in-depot examination device, hidden faults of the center node equipment can be timely diagnosed and found, the work efficiency of active examination can be improved, the cost of equipment maintenance can be reduced, the operation safety of urban rail vehicles can be improved, and the occurrence of equipment failure can be prevented.

A lightning arrester resistive current testing sensor belongs to the field of electronic technology. The lightning arrester resistive current testing sensor comprises a single-turn straight-through current sensor circuit. The single-turn straight-trough current sensor circuit is connected with an electric power acquisition line. The single-turn straight-through current sensor circuit is provided with a bidirectional transient voltage suppressor which performs an overvoltage protection function; a resistor R1 and a resistor R6 which convert a current signal to a voltage signal and perform voltage dividing sampling; a diode D1 and a diode D2 which perform clamping on the sampled voltage; diodes D3, D4, D5, D6 which are used for performing rectification on an instantaneous lightning overvoltage; an LM358 dual operational amplifier which is used for conditioning the rectified voltage; and a CPU which counts number of action times of the lightning arrester. The lightning arrester resistive current testing sensor improves detection accuracy of an MOA lightning arrester sensor and furthermore has advantages of high interference resistance, high stability and high convenience in online detection.

The invention provides a dust collection device for loading of bagged cement, and belongs to the technical field of dust collection. The dust collection device comprises a top dust sucking cover, a main air inlet tube, an air sucking guide tube and a lifting component, wherein the lifting component is used for adjusting the air sucking guide tube to ascend and descend; the top dust sucking cover is arranged at the air inlet of the main air inlet tube; the air sucking guide tube is arranged inside the main air inlet tube in a sliding manner; the top dust sucking cover and the air sucking guide tube are respectively communicated with the main air inlet tube; the lifting component is connected with the air sucking guide tube. By adopting the dust collection device, dust diffused in loading can be effectively removed, the energy can be saved, the cost can be lowered, the operation security of operators can be ensured, and moreover the application range can be widened as the dust collection device is applicable to vehicles of different heights and dust collection of similar loading operation.

The invention provides a detection and alarm method for preventing third-party construction excavation, which comprises the steps of S1, collecting different types of ground vibration signal samples,and constructing a ground vibration signal sample database; S2, performing dual time-frequency joint decomposition on the collected ground vibration signal samples, and constructing a dual time-frequency joint feature vector of the ground vibration signal samples; S3, constructing a deep learning model for ground vibration signal detection through the dual time-frequency joint feature vector; S4,carrying out prediction and classification on the detected ground vibration signals by using the deep learning model, and giving an alarm for the construction condition with excavation activities. Theinvention provides a simple and feasible detection and alarm method for preventing third-party construction excavation, real-time detection and alarm are carried out for the third-party constructionexcavation activities, unified safety protection is carried out on underground pipelines, and the safe operation of the underground pipelines is effectively guaranteed.

The disclosure provides a power tube well cable information acquisition and storage device and method. The device comprises an electronic tag body. The electronic tag body comprises a control module,an indication lamp module, a temperature sensor module and a storage module. The control module is connected with the indication lamp module, the temperature sensor module and the storage module; thecontrol module is an ultra-low power consumption radio frequency chip and is used for carrying out bidirectional communication with an external concentrator to realize data transceiving, the indication lamp module is used for indicating whether data transceived by the electronic tag are normal or not; the temperature sensor module is used for detecting the temperature of an environment where the cable is located; and the storage module is used for storing static information of the cable. The electronic tag body is arranged in a closed plastic shell, and the plastic shell is fixed on the cablethrough a fixing device. According to the invention, the temperature information, the positioning statistical information and the operation state of the joint of the line in the cable duct trench canbe known in real time, and the safe operation of the cable and the stability and reliability of power supply are ensured.

The invention discloses a cable insulation condition monitoring method and system based on QGA-VMD, and belongs to the technical field of cable insulation condition monitoring. The technical problem to be solved is to provide the improvement of the cable insulation condition monitoring method based on the QGA-VMD. According to the technical scheme, the method comprises the following steps: sampling original voltage and original current of a cable through a sampling circuit, and carrying out preliminary filtering processing on the collected original voltage and current data; a penalty factor and a decomposition mode number in the variational mode decomposition algorithm are optimized by using a quantum genetic algorithm, and an optimized QGA-VMD algorithm is obtained; performing signal decomposition on the obtained voltage and current signals through an optimized QGA-VMD algorithm, and extracting a voltage fundamental component and a current fundamental component of which the frequencies are close to the power frequency; calculating the extracted voltage fundamental component and current fundamental component by using a sine wave parameter method to obtain a dielectric loss factor; the method is applied to cable insulation monitoring.

The invention belongs to the technical field of power electronic heat dissipation, and particularly discloses a radiator for thyristor short-time junction temperature protection. The radiator is usedfor heat dissipation of a flexible direct-current transmission converter valve. The radiator comprises a phase-change material of which the heat conductivity meets a Maxwell model, a substrate, an external shell and internal fins. The phase-change material comprises a phase-change matrix and a heat conduction enhancer, wherein the external shell is fixed on the substrate to form a filling cavity.The plurality of internal fins are arranged in the external shell at intervals, and the bottom of each internal fin is connected with the substrate to divide the filling cavity into a plurality of sub-filling cavities. Each sub-filling cavity is filled with a phase change material. According to the radiator with the phase-change material, the properties that the phase-change material absorbs heatin the phase-change process and keeps the temperature unchanged are utilized; short-time junction temperature protection during thyristor overcurrent or short circuit is achieved; rising of the junction temperature is restrained; and the radiator with the phase-change material is suitable for the occasion of thyristor short circuit or overcurrent of the converter valve.

The invention provides a method for gob-side entry retaining by means of high-water material filling pillars. The method comprises operation steps as follows: 1) a high-water material filling area is pre-made between a coal exploitation region and a retained entry, and air inflation templates are arranged on one side, close to the retained entry, of the high-water material filling area; 2) holes are pre-formed in the high-water material filling area and the air inflation templates, and locking bolts penetrate through the holes; 3) a plurality of support pillars are attached to one side, close to the retained entry, of each air inflation template; 4) roof anchor rods are beaten firstly during advancing along the mining working face at the top of the high-water material filling area, the air inflation templates are inflated, then, the high-water material filling area is backfilled, and besides, concrete is added for solidification; 5) after a structure in the high-water material filling area is hardened, the air inflation templates are removed, and fixation through the locking bolts and the support pillars is performed again; 6) with advancing of the mining working face, the step 4) and the step 5) are repeated until construction of the whole retained entry is completed. Construction of the high-water material filling area is greatly facilitated, and popularization is facilitated.

The invention provides a satellite internal medium deep charging monitoring method which comprises the following steps: performing energy spectrum division on high-energy electrons incident to a satellite internal medium to obtain the energy Ei of the high-energy electrons of each energy channel; calculating the electron flux transmittance rat of each energy channel passing through the satellite protection layer; obtaining the electron flux Fi of each energy channel incident to the surface of the internal medium of the satellite, and further obtaining the total electron flux F of each energy channel incident to the surface of the internal medium of the satellite; calculating the deep charging voltage U of the satellite internal medium according to the total electron flux F, wherein U=S*F*Qe*R, S is the detection area of the deep charging medium, and R is the resistance Qe of the deep charging medium and is the charge of a single electron. According to the deep charging voltage, the material of the internal medium of the satellite can be screened or the shielding measure can be optimized in a targeted manner, so that the single-machine operation is further optimized. The method provided by the invention can also realize continuous monitoring of the charging voltage of the internal medium of the satellite, and has very strong practicability.

The invention discloses a wireless early warning device of a transformer substation, which relates to the technical field of transformer stations and solves the technical problem of resolving faults of the transformer substation immediately. The wireless early warning device comprises a mobile phone, a GSM (Global System For Mobile Communication) short message transceiving control unit, a photoelectric isolation input unit, an output relay unit, a serial communication isolation unit, a system state indicating unit, and a switching power unit, wherein the photoelectric isolation input unit is used for collecting input signals of the transformer substation, the output relay unit is used for controlling an action execution mechanism of the transformer substation, the serial communication isolation unit is used for connecting the GSM short message transceiving control unit with external equipment, the system state indicating unit is used for indicating the system running state, the switching power unit is used for supplying power for all the units, and the mobile phone is used for receiving an early warning signal or sending a control instruction of the GSM short message transceiving control unit; and the GSM short message transceiving control unit collects and detects an input signal of the transformer substation through the photoelectric isolation input unit, and controls the action execution mechanism of the transformer substation through the input relay unit. The wireless early warning device can monitor and maintain the transformer substation remotely.

The invention provides a distributed power distribution network optimization reconstruction method. The method comprises the steps of building a reactive power optimization power distribution network multi-objective optimization reconstruction model, and obtaining the switching action frequency; dynamically monitoring the power supply and load change trend of the power distribution network on the premise of meeting the constraint of the switching action frequency; dynamically monitoring the uncertainty of the power supply and the load of the power distribution network on the premise of meeting the constraint of the switching action frequency; and dynamically adjusting the topological structure of the power distribution network by dynamically monitoring the power supply and load change trend and uncertainty of the power distribution network. Through the power distribution network optimization reconstruction method, guidance suggestions can be provided for reactive power optimization and voltage monitoring of the power distribution network, stable operation between lines, optimization of a topological structure of the power distribution network and rapid positioning of faults of the power distribution network, multi-objective optimization of power distribution network reconstruction is realized, and the power supply reliability of the power distribution network is effectively guaranteed.