39results about How to "Effective lightning protection" patented technology

The invention discloses a field terminal equipment lightning protection method based on an agricultural internet of things. The field terminal equipment lightning protection method based the agricultural internet of things comprises the following steps of (1) setting initial parameters; and (2) lightning protection: acquiring weather forecast information of a region of a field internet-of-things terminal in various lightning protection time buckets by using an upper monitoring terminal, and performing lightning protection on field terminal equipment according to the weather forecast information. A method of lightning protection on the field terminal in an optional lightning protection time bucket comprises the following steps of (201) acquiring the weather forecast information; (202) analyzing the weather forecast information; (203) performing lightning protection when lightning exists; (204) performing lightning protection when lightning does not exist; and (206) repeating the step (205) until a lightning protection process of the field terminal equipment in all the lightning protection time buckets is finished. The field terminal equipment lightning protection method based on the agricultural internet of things has simple steps, and is reasonable in design, low in invested cost, convenient to implement and high in using effect; and the agricultural field internet-of-things terminal can be prevented from being hit by thunderstrike and is damaged.

The invention provides a solar farmland environment monitoring device, which comprises a support. The support is composed of a triangular supporting frame and a supporting rod. The bottom end of the supporting rod is connected with the triangular supporting frame through a fixed circular ring. The top end of the supporting rod is provided with a solar heat-collecting plate. The upper end of the supporting rod is provided with a first detection device. The lower end of the first detection device is provided with a second detection device. The lower end of the second detection device is provided with an insect killing device. The lower end of the insect killing device is provided with a third detection device. The lower end of the third detection device is provided with a protective cover. The lower end of the protective cover is provided with a control box. According to the technical scheme of the invention, the wind power, the rainfall capacity, the ultraviolet radiation condition, the photosynthetic active radiation condition, the air temperature and humidity condition, the soil humidity, the soil salinity, the soil pH value and other conditions of the farmland environment can be accurately and timely monitored. Meanwhile, the farmland environment condition can be comprehensively monitored and the monitoring result is fed back to the control terminal of a user just in time. Therefore, the user can conveniently and timely master the farmland environment information.

The invention discloses a solar air conditioner system with self-discharge, adjustable inversion and power lightning protection functions. The solar air conditioner system comprises a solar battery, a solar controller, a storage battery and a variable-frequency air conditioner, wherein the solar controller comprises a charging circuit, a control circuit, a lightning protection circuit and a discharge circuit; the variable-frequency air conditioner comprises an inversion circuit and a compressor; the inversion circuit comprises a 51st resistor, a 52nd resistor, a 53rd resistor, a 51st slide rheostat, a 52nd slide rheostat, a 51st inductor, a 51st capacitor, a 52nd capacitor, a 51st triode, a 51st transformer and a 52nd transformer; the lightning protection circuit comprises a 61st resistor, a 62nd resistor, a 61st piezoresistor, a 62nd piezoresistor, a 63rd piezoresistor, 61st fuse protector, a 62nd fuse protector, a 63rd fuse protector and a 64th fuse protector. The solar air conditioner system can effectively prevent lightning and improve the safety of the system, and can greatly shorten the discharge time, save the energy of the system, absorb lightning surge on the air conditioner and protect the air conditioner from being damaged by the lightning surge.

The invention discloses an intelligent photovoltaic component multifunctional junction box which at least comprises a substrate module, a diode module and a cover plate module. The substrate module, the diode module and the cover plate module can be freely spliced and split. When the substrate module, the diode module and the cover plate module are integrally spliced, a diode insulating shell is arranged between a substrate insulating shell and a cover plate insulating shell, and all the conductive plugging connectors of the substrate module, the diode module and the cover plate module are enabled to be plugged in an adaptive manner so that a circuit structure capable of providing a power output protection function to a photovoltaic component can be formed by the electrical parts in the substrate module, the diode module and the cover plate module, and the substrate module, the diode module and the cover plate module are enabled to be stably spliced together. The junction box is easy to maintain, and maintenance manpower, material resource and time loss can be reduced so that operation and maintenance cost of a photovoltaic power station can be greatly reduced.

The invention discloses a wind driven generator blade tip lightning arrester, and relates to the technical field of wind driven generators. The wind driven generator blade tip lightning arrester comprises a base, the top of the base is fixedly connected with a sleeve, the top of the sleeve is provided with a rotating shaft, the inner side wall of the middle of the rotating shaft is slidably connected with a lightning rod, and the rotating shaft is internally provided with a driving mechanism. In rainy days, rainwater is collected through a flow guide ring, so that the rainwater enters the rotating shaft, a push plate is downwards pushed to move through continuous collection of the rainwater and the gravity effect of the rainwater, a threaded rod is rotated accordingly, then a driving belt wheel is driven to rotate, a lifting rod is driven to rotate through a belt and a driven belt wheel, the lightning rod is pushed to the top of the rotating shaft, and effective lightning protection is achieved; and moreover, the lightning rod is protected when not in use, and is prevented from being damaged due to external factors when not in use, the service life of the lightning rod is prolonged, and faults of a wind driven generator caused by lightning stroke are prevented.

The invention discloses a photovoltaic power supply device of a sewage treatment equipment power system. The sewage treatment equipment power system comprises the photovoltaic power supply device, a commercial power supply device, a power supply conversion device, a control module and a blower which are connected via shielding cables. The photovoltaic power supply device and the commercial power supply device are connected with the power supply conversion device together so as to select a corresponding power supply mode. The control module drives the blower to operate when power supply conversion device outputs current. The photovoltaic power supply device comprises a photovoltaic cell, a photovoltaic controller, a storage cell and an inverter circuit. The photovoltaic controller is provided with a charging circuit, a discharging circuit and a control circuit. The charging circuit is connected between the photovoltaic cell and the storage cell. The discharging circuit is connected between the storage cell and the inverter circuit. The control circuit is respectively connected with the charging circuit, the discharging circuit and the storage cell. The inverter circuit is connected with the power supply conversion device. Performance of the power system can be improved in a certain aspect among energy conservation and environmental protection, safety, anti-interference performance or controllability and low noise and high efficiency.

The invention relates to a power transmission tower provided with a remote power monitoring system. The power transmission tower can be clamped according to the thickness of a wire, and thunder and radiation are effectively prevented; the deicing effect on a high-voltage power transmission line is obvious, ice and snow on the power line can be quickly treated, the situation is avoided that the power line is pressed and broken by the ice and snow, deicing is conducted through the cooperation of multiple methods, the deicing efficiency is higher, the transmission efficiency of the power line isimproved at the same time, and the corrosion resistance is achieved; according to the remote power monitoring system, when a power distribution control cabinet fails, a main control module in a front-end remote monitoring terminal controls a circuit protector in the power distribution control cabinet through an output control module to achieve circuit break, an internal camera shooting module takes a picture and conducts camera shooting at a smoke generation place at the same time, and then fault information is uploaded to a power monitoring server; a monitoring main unit informs maintenance personnel to leave for inspection.

The present invention discloses a lightning protection device and a wind turbine. The lightning protection device comprises a machine body fixing frame, a discharging support frame and a guiding elastic piece, wherein the machine body fixing frame is connected and fixed with a machine body; a current collection claw, a guide wheel and a carbon brush are fixedly connected to the discharging support frame, face the side wall of a top conductor at top portion of the lightning protection body and extend out of the discharging support frame; and two ends of the guiding elastic piece are connected with the machine body fixing frame and the discharging support frame respectively, and the relative distance between the machine body fixing frame and the discharging support frame is adjusted. The wind turbine comprises a wind wheel, a generator, an iron tower and a yawing device, and also comprises the lightning protection device and the wind turbine provided by the present invention. Through the lightning protection device and the wind turbine, effective lightning protection effect can be achieved, and safe operation of wind power generation equipment is ensured.

The invention discloses a solar air conditioner system having functions of charging and power supply lightning protection. The solar air conditioner system comprises a solar cell, a solar controller, a storage battery and a variable frequency air conditioner, wherein the solar controller comprises a charging circuit, a control circuit, a lightning protection circuit and a discharging circuit, the variable frequency air conditioner comprises an inversion circuit, the charging circuit comprises a twenty-first diode, a twenty-second diode, a twenty-third light emitting diode, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twenty-seventh resistor, a twenty-eighth resistor, a twenty-first thermistor, a twenty-second thermistor, a twenty-first triode, a twenty-first capacitor, a twenty-second capacitor and a twenty-first charging management chip, and the lightning protection circuit comprises a sixty-first resistor, a sixty-second resistor, a sixty-first thermistor, a sixty-second thermistor, a sixty-third thermistor, a sixty-one fuse, a sixty-second fuse, a sixty-third fuse, a sixty-fourth fuse and a gas discharging tube. By the solar air conditioner system, lightning can be effectively prevented, the safety performance of the system is improved, the system is convenient to install and is relatively low in cost and relatively high in reliability, a lightning surge applied to an air conditioner can be absorbed, and the air conditioner is prevented from being damaged by the lightning surge.

The invention relates to a lightening prevention system used for an environment monitoring station. The system comprises an indoor lightning prevention protection unit and an outdoor lightning protection unit. The indoor lightning protection unit comprises a power supply primary lightning preventer, a power supply secondary lightning preventer, a power supply three-level lightning preventer, a power supply four-level lightning preventer, a network signal lightning preventer, a signal surge protection device, a current collection box and a first grounding unit. The first grounding unit comprises a first copper bar connected to a secondary downlead, a first plasma grounding pole and a first non-metal grounding body. The outdoor lightning protection unit comprises a lightning avoiding device.The lightning avoiding device comprises a support rod. An attenuation lightning arrester is installed on the top of the support rod. A second grounding unit is connected to the bottom of the support.The contact parts between the plasma grounding pole and the non-metal grounding body and the soil are filled with resistance reducing agent. According to the invention, the system is advantaged by high lightning protection grade, good protection effects on devices and wires, reduction of guiding in of earth current and quick conduction speed.

The invention discloses an intelligent photovoltaic component multifunctional junction box which at least comprises a substrate module, a diode module and a cover plate module. The substrate module, the diode module and the cover plate module can be freely spliced and split. When the substrate module, the diode module and the cover plate module are integrally spliced, a diode insulating shell is arranged between a substrate insulating shell and a cover plate insulating shell, and all the conductive plugging connectors of the substrate module, the diode module and the cover plate module are enabled to be plugged in an adaptive manner so that a circuit structure capable of providing a power output protection function to a photovoltaic component can be formed by the electrical parts in the substrate module, the diode module and the cover plate module, and the substrate module, the diode module and the cover plate module are enabled to be stably spliced together. The junction box is easy to maintain, and maintenance manpower, material resource and time loss can be reduced so that operation and maintenance cost of a photovoltaic power station can be greatly reduced.

The embodiment of the invention discloses a DC variable frequency fan which is suitable for a DC variable frequency fan system comprising a solar cell, a solar controller, a storage cell and the DC variable frequency fan. The DC variable frequency fan is provided with an inverter circuit and a blower motor. The input end of the inverter circuit is connected with the discharging circuit of the solar controller. The charging circuit of the solar controller is connected between the solar cell and the storage cell. The control circuit of the solar controller is respectively connected with the charging circuit, the discharging circuit and the storage cell. The discharging circuit is also connected with the storage cell. The blower motor is connected with the output end of the inverter motor. The blower motor drives a blower impeller. The blower impeller comprises left and right end plates which are fixed on a rotating shaft. Multiple blades are distributed along the axial direction of the rotating shaft and clamped between the left and right end plates. The cross section edges, which are perpendicular to the rotating shaft, of the blades are longitudinally bent into an arc shape. The DC variable frequency fan system and subsystems are improved so that product performance can be effectively improved, and thus the DC variable frequency fan has advantages of being environment-friendly, economic and convenient to use.

The invention relates to an insulating property monitoring device and an insulating property monitoring method of a high-voltage switching apparatus. The monitoring device comprises a sampling resistor and a sample processing device which is connected with the sampling resistor, wherein the sampling resistor and the sample processing device are arranged between the insulating shell of the high-voltage switching apparatus and the ground; and the sample processing device comprises a power supply device which provides power for the sample processing device and a transducer which is used for transmitting a signal. The monitoring method comprises the following steps that: the sampling resistor and the sample processing device which is connected with the resistor are arranged between the insulating shell of the high-voltage switching apparatus and the ground; the sample processing device converts a current or voltage signal of the sampling resistor into the standard current or voltage signal and outputs the standard current or voltage signal to externally connected equipment; and the externally connected equipment is compared with a preset value according to the standard current or voltage signal so as to judge whether the insulating property of the shell of the high-voltage switching apparatus is good or not. The device and the method of the invention have the advantage of timely monitoring the insulating property of the shell of the high-voltage switching apparatus and saving the maintenance cost.

The invention discloses a multi-channel adapter used for connecting cables in the field, which includes an adapter housing, and a plurality of transversely extending cable channels are opened inside the adapter housing. Several lightning protection covers are fixedly arranged on the outer surface, and the lightning protection covers are connected by wires. The present invention is applied in the field of field cable transfer technology. In the present invention, a transversely extending cable passage is provided on the transfer case for cable transfer, and symmetrically distributed anti-corrosion bars extending from the same lines are arranged on the transfer case. The lightning outer cover and the lightning protection inner cover form a uniformly distributed induced charge layer on the outer peripheral surface of the adapter shell, and then form a relatively uniformly distributed electric field environment between the induced charge layer and the thunder cloud to reduce the probability of lightning strikes, thereby Fundamentally change the lightning protection method of the lightning itself, and achieve the effective lightning protection function of the field cable adapter, and the rain-proof rib can prevent the adapter shell from accumulating water.

The invention discloses a novel support structure lightning early warning device, the early warning device comprises a support plate, and the upper surface of the support plate is provided with a monitoring device and a lightning arrester; the monitoring device comprises a turnover device and an atmospheric electric field detector rotationally connected with the top of the turnover device, the bottom of the turnover device is installed on the upper surface of the supporting plate, and a storage groove matched with the atmospheric electric field detector in size is formed in the upper surface of the turnover device; and the lightning arrester comprises a protective shell and a lifting lightning rod arranged in the protective shell. According to the lightning early warning device with the new supporting structure, the monitoring device and the lightning arrester are integrally designed, and the lightning arrester does not need to be additionally arranged beside the lightning early warning device; the lightning arrester is of a lifting structure and can automatically ascend and descend according to the charge quantity of the cloud layer of the monitoring device, so that on one hand, lightning protection can be effectively carried out on the monitoring device, and on the other hand, the service life of the lightning arrester can be prolonged.

The invention relates to the technical field of aerospace, particularly to a time sequence control case, which comprises a case main body, a first electric connector, a second electric connector, a circuit board assembly, six electromagnetic relays and six circuit breakers, wherein the first electric connector, the second electric connector, the circuit board assembly, the six electromagnetic relays and the six circuit breakers are installed in the case main body, the case main body is a cuboid, box plates of the case main body are fixedly connected through screws, sealing gaskets are extruded at the butt joint positions of the box plates, a first mounting plate parallel to a case left box plate is mounted on a case bottom plate, a plurality of metal clamping grooves distributed at intervals are symmetrically formed in the first mounting plate and the case left box plate, the case main body further comprises a second mounting plate, the second mounting plate is parallel to the case bottom plate, the two ends of the second mounting plate are fixedly connected with the metal clamping grooves in the first mounting plate and the metal clamping grooves in the case left box plate respectively, and an electromagnetic relay and a circuit board assembly are fixed to the second mounting plate. The time sequence control case of the invention has the advantages of avoiding overlarge starting current of a plurality of external loads at the same time and the like.

The invention discloses a shielded cable connection structure of a sewage treatment equipment power system. The sewage treatment equipment power system comprises a photovoltaic power supply device, a commercial power supply device, a power supply conversion device, a control module and a fan. The characteristics lie in that the photovoltaic power supply device, the commercial power supply device, the power supply conversion device, the control module and the fan in the shielded cable connection structure are connected through shielded cables, and a shielding layer of the shielded cable between the power supply conversion device and the control module and a shielding layer of the shielded cable between the control module and the fan are grounded. The shielded cable connection structure disclosed by the invention at least can improve the performance of the power system at a certain aspect of energy conservation, environment protection, safety, anti-interference performance or controllability, low noise, high efficiency and the like.

The invention discloses a wiring system with a free movement function applied to an elevated line system. The wiring system comprises a lightning protection overvoltage protector, an insulator, a bracket device and a cross beam, wherein the lightning protection overvoltage protector is fixedly arranged on the bracket device by virtue of a first bolt part; the insulator and the bracket device are fixedly arranged on the cross beam by virtue of a bolt unit; the bracket device comprises a secondary bracket and a primary bracket; the primary bracket is L-shaped, a strip-shaped hole is formed in the long side of the primary bracket, and the short side of the primary bracket is fixedly arranged on the cross beam by virtue of the bolt unit; and the secondary bracket is L-shaped, the long side of the secondary bracket is fixed with the lightning protection overvoltage protector by virtue of the first bolt part, and the short side of the secondary bracket is fixed on the strip-shaped hole by virtue of a second bolt part. The problem that time is consumed during the conventional installation and adjustment is solved, a fixing bracket is replaced by utilizing a mode of arranging the primary and secondary brackets in a split mode, and the adjustment is very conveniently performed during installation, so that the installation time is saved, and the aim of saving the mounting and using cost is achieved.

The invention discloses a solar air-conditioning system with control and power lightning protection functions. The solar air-conditioning system comprises a solar battery, a solar controller, a storage battery and a variable-frequency air conditioner, wherein the solar controller comprises a charging circuit, a control circuit, a lightning protection circuit and a discharge circuit; the variable-frequency air conditioner comprises an inverter circuit; the control circuit comprises a 31st diode, a 32nd diode, a 33rd diode, a 34th voltage-regulator tube, a 37th voltage-regulator tube, a 32nd resistor, a 31st MOS tube and an integrated voltage stabilizing chip; and the lightning protection circuit comprises a 61st resistor, a 62nd resistor, a 61st piezoresistor, a 62nd piezoresistor, a 63rd piezoresistor, a 61st fuse, a 62nd fuse, a 63rd fuse, a 64th fuse and a gas discharge tube. By the solar air-conditioning system, a thunder can be effectively prevented, the safety performance of the system is improved, the solar air-conditioning system has relatively good self-startup ability, an endless loop state is avoided, a lightning surge on an air conditioner can be absorbed, and the air conditioner is prevented from being damaged by the lightning surge.

The invention discloses a solar air conditioner system with automatic discharging, inversion and power supply lightning prevention functions. The solar air conditioner system comprises a solar cell, a solar controller, a storage battery and a variable frequency air conditioner; the solar controller comprises a charging circuit, a control circuit, a lightning prevention circuit and a discharging circuit; the variable frequency air conditioner comprises an inverter circuit and a compressor; the inverter circuit comprises fifty-first to fifty-sixth IGBTs , fifty-first to fifty-second capacitors, fifty-first to fifty-second diodes, fifty-first to fifty-second resistors and fifty-first to fifty-second inductors; and the lightning prevention circuit comprises sixty-first to sixty-second resistors, sixty-first to sixty-third piezoresistors and sixty-first to sixty-fourth fuses. According to the solar air conditioner system disclosed by the invention, lightning can be effectively prevented, safety performance of the system is improved, discharge time can be greatly shortened, energy consumption of the system is saved, a leakage current can be inhibited, variation efficiency is relatively high, a lightning surge applied to the air conditioner can be adsorbed, and the air conditioner is protected from being damaged by the lightning surge.

The invention discloses a storage cell of a sewage treatment equipment power system. The sewage treatment equipment power system comprises a photovoltaic power supply device, a commercial power supply device, a power supply conversion device, a control module and a blower. The photovoltaic power supply device comprises a photovoltaic cell, a photovoltaic controller, the storage cell and an inverter circuit. The photovoltaic controller is provided with a charging circuit, a discharging circuit and a control circuit. The charging circuit is connected between the photovoltaic cell and the storage cell. The discharging circuit is connected between the storage cell and the inverter circuit. The control circuit is respectively connected with the charging circuit, the discharging circuit and the storage cell. The inverter circuit is connected with the power supply conversion device. The storage cell comprises a storage cell body, a cell management module, a data bus, an auxiliary power supply bus and an auxiliary charging control line. The positive electrode and the negative electrode of the storage cell body are respectively connected with the cell management module. Performance of the power system can be improved in a certain aspect among energy conservation and environmental protection, safety, anti-interference performance or controllability and low noise and high efficiency.

The invention discloses a lightning protection method for field terminal equipment based on the agricultural internet of things, comprising the steps of: 1. initial parameter setting; Regional weather forecast information, and lightning protection for field terminal equipment according to the weather forecast information; when lightning protection is performed for field terminal equipment within any lightning protection protection period, the process is as follows: 201. Acquisition of weather forecast information; 202. Weather Forecast information analysis; 203, processing with lightning protection; 204, processing without lightning protection; 205, lightning protection during the next lightning protection period; Lightning protection process. The method of the invention has simple steps, reasonable design, low input cost, convenient implementation and good use effect, and can prevent field IoT terminals in the agricultural Internet of Things from being damaged by lightning strikes.

The invention discloses a lightning arrester for rotating radar antennas, comprising a plurality of lightning rods, down leads, and a large-current diversion slip ring. The adjacent lightning rods are connected by a lightning rod connecting conductor. The lightning rod connecting conductor, the down leads and the large-current diversion slip ring are connected in sequence. The large-current diversion slip ring includes a large-current diversion slip ring rotating ring and a large-current diversion slip ring fixed ring, the large-current diversion slip ring rotating ring is connected with a rotating antenna body through high-voltage insulating devices, and the large-current diversion slip ring fixed ring is installed on an antenna metal turntable base. The large-current diversion slip ring fixed ring is equipped with a plurality of conductive carbon brushes, and the conductive carbon brushes are in elastic electrical contact with the large-current diversion slip ring rotating ring. High-voltage insulating devices are arranged between the lightning rods, the lightning rod connecting conductor and the down leads on one hand and the rotating antenna body on the other hand. The antenna metal turntable base is grounded. A rotating radar antenna can be protected from direct lightning attack without affecting normal work of the rotating radar antenna.

The invention discloses a photovoltaic and photo-thermal integrated micro power station solar thermal collector which is characterized by comprising a rim, wherein a photovoltaic power generation panel fixedly connected with the rim is arranged on one side of the rim; a photo-thermal heat absorption panel core fixedly connected with the rim is arranged on the other side of the rim; and a photoelectric plug connected with the photovoltaic power generation panel is arranged at the upper end of the rim. The photovoltaic and photo-thermal integrated micro power station solar thermal collector is reasonable in structural design and convenient to use; compared with the cost of the conventional thermal collector with the photovoltaic panel and the photo-thermal panel which are independent and are of the same specification, the cost of the photovoltaic and photo-thermal integrated thermal collector with part of the structural components shared can be reduced by 20 percent; and the photovoltaic power generation panel and the photo-thermal heat absorption panel core are combined together, so that the utilization rate of unit solar energy is increased. The photovoltaic and photo-thermal integrated micro power station solar thermal collector solves the technical problems of difficulty in combination for use and low heat exchange efficiency in the prior art are solved.

The invention discloses a solar air-conditioning system with control and H-bridge inversion circuits. The solar air-conditioning system comprises a solar cell, a solar controller, a storage battery and a variable frequency air conditioner, wherein the solar controller comprises a charging circuit, a control circuit, a lightning protection circuit and a discharging circuit; the variable frequency air conditioner comprises an inversion circuit; the control circuit comprises diodes from the thirty-first to the thirty-third, a thirty-fourth voltage-stabilizing tube, a thirty-seventh voltage-stabilizing tube, a thirty-second resistor, a thirty-first MOS transistor and an integrated voltage-stabilizing chip; the inversion circuit comprises a fifty-first IGBT, a fifty-second IGBT, a fifty-third MOS transistor, a fifty-fourth MOS transistor, diodes from the fifty-first to the fifty-fourth, a fifty-first resistor and a fifty-second resistor. The solar air-conditioning system can effective prevent lightning, improves safety performance of the system, has good self-starting capability, avoids the occurrence of an endless loop state, and has high efficiency no matter a load is in light load operation or full load operation.

The invention discloses a control module of a sewage treatment equipment power system. The sewage treatment equipment power system comprises a photovoltaic power supply device, a commercial power supply device, a power supply conversion device, a control module and a blower. The control module of the sewage treatment equipment power system is characterized in that a three-phase power input line is connected with the motor line of the three-phase motor of the blower through a main loop circuit breaker and an AC contactor in the main loop of the control module. The input end of a control loop circuit breaker is connected with a two-phase power input line in the control loop of the control module. One output end of the control loop circuit breaker is connected with one wiring end of an AC contactor coil, and the other output end of the control loop circuit breaker is connected with the other wiring end of the AC contactor coil through an inching button. Performance of the power system can be improved in a certain aspect among energy conservation and environmental protection, safety, anti-interference performance or controllability and low noise and high efficiency.

The invention discloses a lightning surge protection composite piezoresistor and a manufacturing method thereof. The varistor is composed of a lightning protection valve chip and a sensitive pressure sensitive chip connected in parallel. The lightning protection valve chip uses a varistor chip with a large current peak value, a low mutation minimum resistance, and a nonlinear coefficient of 45 to 55. The sensitive varistor chip uses a varistor chip with a high nonlinear coefficient and a work-resistant Frequency overvoltage varistor chip. When a small current surge fluctuates in the line due to operation overvoltage or transient overvoltage, the sensitive varistor chip plays the main role and releases the energy immediately. When lightning overvoltage occurs, due to the impact voltage amplitude High and high energy. At this time, the lightning protection valve chip plays the main role, releasing the energy at the first time, so as to ensure the stability of the transmission line. The invention has the advantages of realizing the effective lightning protection and anti-surge impact of the transmission line, greatly prolonging the service life of the product and ensuring the reliability of the product.

The invention discloses a power system for a sewage processing device. The power system comprises a photovoltaic power supply apparatus, a commercial power supply apparatus, a power conversion apparatus, a control module and a blower fan, which are connected through shielded cables, wherein the photovoltaic power supply apparatus and the commercial power supply apparatus are jointly connected to the power conversion apparatus to select corresponding power supply means, and the control module drives the blower fan to rotate when the power conversion apparatus outputs currents. The two ends of the control module respectively access to a first grounding element and a second grounding element, wherein the first grounding element is connected between the input end and the grounding end of the control module, and the second grounding element is connected between the output end and the grounding end of the control module. The power system is improved at least in one aspect among energy saving and environmental protection performance, safety, interference immunity or controllability, low noise and high efficiency.

The present invention provides a novel filtering assembly comprising a shielding shell and a power supply filter. The shielding shell comprises a base and an upper cover. The shape of the upper cover is a single side opening cylindrical cavity structure. One end of the opening side is an inserting terminal. An external diameter of the inserting terminal is smaller than that of the cylindrical cavity structure. The shape of the base is a round pie-shaped structure. One face of the base is provided with a ring of a round notch of which the size matches the size of the inserting terminal, and a plurality of installation grooves are circularly distributed in an edge of the other face of the base. The installation grooves are of U shape, and vertical segment ends of U-shaped opening sides communicate with the edge of the base. Installation holes running through the base are included in U-shaped installation groove regions and close to the outside of the round notch. The power supply filter includes a lightning protection module used for short-circuiting an instantaneously appeared large voltage at a connection terminal to a discharging ground terminal, and the power supply filter is overall coated with a heat conductive insulating casting glue. The novel filtering assembly is suitable for outdoor application, and it is convenient to detect the validity of lightning protection elements.

The invention discloses a counterattack lightning protection measure selection and parameter optimization method based on a hyper-chaos optimization algorithm, and the method comprises the steps: building a lightning protection measure selection model through an information weight method, calculating the weight of each influence factor, carrying out the screening of four factors which have the greatest influence on the lightning counterattack trip-out rate, and carrying out the optimization of the parameters. The actual application range of the selected influence factors is determined according to the environmental factors, the hyper-chaos optimization algorithm is adopted for parameter combination optimization, the calculation amount is reduced, the working efficiency is improved, the intrinsic randomness of hyper-chaos can ensure that parameter combination obtains a globally optimal solution, and the method is suitable for large-scale popularization and application. And selecting the optimal parameter corresponding to the lowest lightning trip-out rate to carry out lightning protection transformation on the power transmission line, thereby realizing effective lightning protection on the power transmission line.