Discharge data remote transmission type overvoltage lightning protection device

Abstract

The utility model relates to the technical field of power distribution network lightning protection, and provides a discharge data remote transmission type overvoltage lightning protection device, which can acquire information such as discharge times, discharge time, leakage current and the like in real time through a state monitoring module, and an impact signal processing circuit divides impact signals into three levels. The impact grade of the overvoltage lightning protection device can be quickly judged; the leakage current processing circuit can switch a collection mode for collecting the leakage current so as to reduce energy consumption; after the main control chip receives the information transmitted by the impact signal processing circuit or the leakage current, time information is obtained from the time module; the main control chip moves the calculation of the leakage current updated by the storage chip to an average value, performs difference calculation on the value and an original value, and outputs a fault signal if the difference is more than one time; the main control chip transmits related information to the data acquisition and transmission terminal, and the data acquisition and transmission terminal transmits the related information to the data management center.

Description

TECHNICAL FIELD

[0001] The utility model relates to a distribution network lightning protection technical field especially, it is a discharge data teletransmission type overvoltage lightning protection device. BACKGROUND

[0002] Lightning is a common and powerful natural phenomenon, with the progress of society and the increasingly perfect electric power system, the threat of lightning to the electric power line is also increasingly serious. As a direct transmission channel to the user, the distribution line is particularly vulnerable to lightning due to the relatively low insulation level. Overvoltage caused by lightning often causes flashover or breakdown of insulators, and even causes the overhead insulated line to break. In order to reduce the damage of lightning to the electric power line, an overvoltage lightning protection device is usually installed on the electric power line, and through the overvoltage lightning protection device, the counterattack of the instantaneous high voltage generated when the large current generated by lightning passes through the unqualified grounding to the line and equipment can be avoided, the line and the equipment on the line are effectively protected, the power outage accident caused by lightning is reduced, and the power supply reliability is improved.

[0003] However, the overvoltage lightning protection device will be damaged to different degrees when resisting lightning, and such damage will directly affect its performance and service life. The greater the intensity of lightning, the greater the damage of the overvoltage protection device; the more the number of lightning, the more serious the loss of the overvoltage protection device, resulting in a shortened life cycle. In order to ensure the protection effect of the overvoltage protection device on the distribution line, the state of the overvoltage protection device needs to be monitored.

[0004] Therefore, it is urgent to develop a discharge data teletransmission type overvoltage lightning protection device to overcome the shortcomings of the prior art. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the insufficient of prior art, and provides a discharge data teletransmission type overvoltage lightning protection device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A discharge data teletransmission type overvoltage lightning protection device, including pole top equipment, data acquisition transmission terminal, data management center;The pole top equipment includes an overvoltage lightning protection device, and a state monitoring module installed on the grounding wire of the overvoltage lightning protection device, the state monitoring module is used for collecting the discharge frequency, discharge time and leakage current information of the overvoltage lightning protection device, and storing the collected information in the internal storage chip, and sending the information to the data acquisition transmission terminal through the wireless communication module;The data acquisition transmission terminal transmits various information data generated by the state monitoring module to the data management center through 4G communication.

[0008] Preferably, the state monitoring module comprises a current sensor, an impact signal processing circuit, a leakage current processing circuit, a sensitivity adjustment circuit, a master control chip, a time module, a storage chip, a power module and a wireless communication module; the current sensor collects the discharge times, discharge times and leakage current information of the lightning protection device in an inductive manner, and transmits the collected information to the impact signal processing circuit and the leakage current processing circuit connected in parallel with the impact signal processing circuit, the impact signal processing circuit and the leakage current processing circuit transmit the processed information to the master control chip, the master control chip stores the received information in the storage chip, the time module provides time information for the master control chip, and the wireless communication module sends the information required to be sent by the master control chip to the data acquisition and transmission terminal.

[0009] Preferably, the impact signal processing circuit divides the impact signal into three levels below 1kA, 1kA-5kA and above 5kA.

[0010] Preferably, the leakage current processing circuit collects leakage current in two modes, mode one is to collect leakage current value periodically, and mode two is to take leakage current value after 1 cycle after lightning discharge.

[0011] Preferably, the storage chip only retains the leakage current data of the last 5 times, and each new data replaces the earliest data.

[0012] Preferably, a sensitivity adjustment circuit is arranged between the leakage current processing circuit and the master control chip, and the sensitivity adjustment circuit is used to adjust the detection starting value of the leakage current.

[0013] Preferably, after the master control chip receives the information transmitted by the impact signal processing circuit or the leakage current, it simultaneously obtains time information from the time module.

[0014] Preferably, the data acquisition and transmission terminal comprises a front-end information receiving module, a signal conditioning circuit, a master control unit, a terminal power supply, a 4G communication module, the master control unit is embedded with a high-speed storage, the information receiving module performs a data communication task with multiple sensors at the same time, and transmits the received information to the master control unit, the signal conditioning circuit amplifies and filters the signals transmitted by various sensors and then transmits them to the master control unit, and the 4G communication module transmits the information processed by the master control unit to a data management center.

[0015] Preferably, the terminal power supply collects solar energy through a photovoltaic panel and stores it in an internal storage battery to power the data acquisition and transmission terminal.

[0016] Preferably, the overvoltage lightning protection device comprises a current diversion device fixed on a wire, a high-voltage fully-insulated flexible cable with one end connected to the current diversion device, a discharge gap plate connected to a free end of the high-voltage fully-insulated flexible cable, a supporting insulator with one end connected to the discharge gap plate, and a mounting rack connected to a free end of the supporting insulator, wherein the mounting rack is fixed on a pole, the discharge gap plate is provided with an upper discharge electrode on a side away from the supporting insulator, a power frequency current limiter is arranged on the mounting rack below the upper discharge electrode, and the power frequency current limiter is provided with a lower discharge electrode close to one end of the upper discharge electrode.

[0017] The utility model discloses a discharge data remote transmission type overvoltage lightning protection device has the following beneficial effects.

[0018] Firstly, the utility model discloses a state monitoring module can gather discharge times, discharge time and leakage current information in real time, and an impact signal processing circuit divides impact signals into three levels below 1kA, 1kA~5kA and above 5kA, so that the overvoltage lightning protection device can be quickly judged to be hit, and a leakage current processing circuit can switch the collection mode of leakage current, thereby reducing energy consumption.

[0019] Secondly, after the main control chip receives information transmitted by the impact signal processing circuit or the leakage current, time information is obtained from the time module at the same time, so that the hit time can be clearly expressed, and historical data analysis is facilitated, the main control chip moves the average value of the leakage current after updating the storage chip, and the value is put into a fixed address, and the original value of the fixed address is calculated before being put in, if the difference is more than one time, a fault signal is outputted, relevant information is transmitted to the data acquisition transmission terminal, the data acquisition transmission terminal transmits relevant information to the data management center, and the data management center transmits information exceeding the standard value to the mobile phone of the designated user in time to carry out real-time alarm. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of the utility model.

[0021] Figure 2 It is the pole equipment structure schematic diagram of the utility model.

[0022] Figure 3 It is the state monitoring module structure schematic diagram of the utility model.

[0023] Figure 4 It is the data acquisition transmission terminal structure schematic diagram of the utility model.

[0024] Figure 5 It is the state monitoring module structure schematic diagram in example 2.

[0025] Figure 6The utility model discloses an impact signal processing circuit structure schematic diagram.

[0026] In the drawing: 1, pole device;11, drainage device;12, high pressure full insulation soft cable;13, discharge gap plate;14, upper discharge electrode;15, power frequency current limiter;16, support insulator;17, lower discharge electrode;18, mounting frame;19, state monitoring module;191, current sensor;192, impact signal processing circuit;193, leakage current processing circuit;194, sensitivity adjusting circuit;195, main control chip;196, time module;197, storage chip;198, power module;199, wireless communication module;2, data acquisition transmission terminal;21, front end information receiving module;22, signal conditioning circuit;23, main control unit;24, terminal power supply;25, 4G communication module;3, communication base station;4, data management center;5, wire. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0028] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. Embodiment 1

[0029] Reference Figure 1 A discharge data remote transmission type overvoltage lightning protection device, including pole device 1, data acquisition transmission terminal 2, data management center 4, pole device 1 includes overvoltage lightning protection device and state monitoring module 19 installed on the ground wire of overvoltage lightning protection device, state monitoring module 19 is used for collecting the discharge frequency, discharge time and leakage current information of overvoltage lightning protection device, and the information collected is stored in the internal storage chip 197, and the information is sent to data acquisition transmission terminal 2 through wireless communication module 199;Data acquisition transmission terminal 2 sends various information data of state monitoring module 19 to data management center 4 through 4G communication, and discharge time needs to be accurate to seconds.

[0030] Reference Figure 3Specifically, the status monitoring module 19 includes a current sensor 191, an impulse signal processing circuit 192, a leakage current processing circuit 193, a sensitivity adjustment circuit 194, a main control chip 195, a time module 196, a storage chip 197, a power supply module 198, and a wireless communication module 199. The current sensor 191 collects the discharge count, discharge time, and leakage current information of the voltage surge protection device using an inductive method. The leakage current information is collected by measuring the current intensity and transmitting the collected information to the impulse signal processing circuit 192 and the leakage current processing circuit 193 connected in parallel with the impulse signal processing circuit 192. The impulse signal processing circuit 192 and the leakage current processing circuit 193 transmit the processed information to the main control chip 195. The main control chip 195 stores the received information in the storage chip 197. The time module 196 provides time information to the main control chip 195. The wireless communication module 199 sends the information that the main control chip 195 needs to send to the data acquisition and transmission terminal 2.

[0031] Impact signal processing circuit 192 Figure 6 As shown, the impact signal is divided into three levels: below 1kA, 1kA~5kA, and above 5kA, and then transmitted to the main control chip 195. The main control chip 195 records the corresponding impact intensity and impact time, updates the total number of discharges for the corresponding discharge level, and stores the corresponding information in the storage chip 197. Simultaneously, the corresponding information is sent to the data acquisition and transmission terminal 2. The leakage current processing circuit 193 transmits the collected leakage current information to the main control chip 195, which stores it in the storage chip 197. The storage chip 197 only retains the most recent 5 leakage current data, updating the earliest data with each new data update, and calculating the moving average of the leakage current after the update. This value is then placed in a fixed address. Before placement, the difference between the value at the fixed address and the original value is calculated. If the difference is more than double, the fault flag of the overvoltage surge protection device at the fixed address in the storage chip 197 is modified. Simultaneously, this indicates that the overvoltage surge protection device has malfunctioned. The main control chip 195 then sends this fault information to the data acquisition and transmission terminal 2 via the wireless communication module 199.

[0032] In the present embodiment, the current sensor 191 adopts LFT61D33-600, the master control chip 195 adopts CC430F5137, the time module 196 adopts DS1302 chip, the wide range working voltage is 2.0~5.5V, the working current is less than 300nA at 2.0V, it can calculate the seconds, minutes, hours, days, dates, weeks, months and years before 2100, and has the ability of leap year adjustment, the storage chip 197 adopts W25Q16 chip, the supply voltage is 2.7~3.6V, the normal working current is less than 4mA, and the power-off current is less than 1uA. The working temperature is -40℃ to 85℃, and the wireless communication module 199 adopts FDS199. Embodiment 2

[0033] Please refer to Figure 5 In the present embodiment, in order to reduce the calculation strength of the master control chip 195 and save energy, the sensitivity adjusting circuit 194 is arranged between the leakage current processing circuit 193 and the master control chip 195, which is used to adjust the detection starting value of the leakage current. In the present embodiment, the leakage current detection starting value is 5mA. As preferred, in order to reduce the energy consumption, the leakage current processing circuit 193 collects the leakage current in two modes. Mode one is to collect the leakage current value periodically, and the collection period is 6h in the present embodiment. Mode two is to collect the leakage current value after 20ms after lightning discharge. Embodiment 3

[0034] Please refer to Figure 2In the embodiment, the overvoltage lightning protection device includes a current diversion device 11 fixed on the conductor 5, a high-voltage fully insulated flexible cable 12 having one end connected to the current diversion device 11, a discharge gap plate 13 connected to the free end of the high-voltage fully insulated flexible cable 12, a support insulator 16 having one end connected to the discharge gap plate 13, and a mounting bracket 18 connected to the free end of the support insulator 16. The mounting bracket 18 is fixed on the electric pole, and the discharge gap plate 13 is provided with an upper discharge electrode 14 on the side away from the support insulator 16. A power frequency current limiter 15 is arranged on the mounting bracket 18 below the upper discharge electrode 14, and the power frequency current limiter 15 is provided with a lower discharge electrode 17 close to one end of the upper discharge electrode 14. A state monitoring module 19 is arranged between the power frequency current limiter 15 and the mounting bracket 18. When the line is struck by lightning and overvoltage occurs, the power frequency current limiter 15 breaks down and discharges through the main discharge gap. When the lightning impact energy is large, the auxiliary discharge gap also discharges at the same time to ensure the effective protection of the line and the equipment on the line when lightning strikes. At the same time, the lightning striking arc point is guided to the discharge gap of the product in a "guiding" manner to effectively prevent the insulation conductor 5 from breaking due to lightning. In the embodiment, the state monitoring module 19 detects the discharge frequency, discharge time, and leakage current information flowing through the power frequency current limiter 15, and stores the collected information in the internal storage chip 197. The information is transmitted to the data acquisition and transmission terminal 2 through the wireless communication module 199. The data acquisition and transmission terminal 2 transmits various information data generated by the state monitoring module 19 to the data management center 4 through 4G communication. The discharge time needs to be accurate to seconds. Embodiment 4

[0035] Please refer to Figure 4 In the embodiment, the data acquisition and transmission terminal 2 includes a front-end information receiving module 21, a signal conditioning circuit 22, a master control unit 23, a terminal power supply 24, and a 4G communication module 25. The master control unit 23 is embedded with a high-speed memory. The front-end information receiving module 21 performs data communication tasks with multiple sensors at the same time, and transmits the received information to the master control unit 23. The signal conditioning circuit 22 amplifies and filters the signals transmitted by various sensors through two operational amplifiers in stages, and then transmits the signals to the master control unit 23. The 4G communication module 25 transmits the information processed by the master control unit 23 to the data management center 4 through the communication base station 3. The data management center 4 timely sends information exceeding the standard value to the mobile phones of designated users for real-time alarm.

[0036] Multiple state monitoring modules 19 transmit relevant data to the same data acquisition and transmission terminal 2.

[0037] The terminal power supply 24 collects solar energy through a photovoltaic panel and stores it in an internal storage battery to supply power to the data acquisition and transmission terminal 2. The inclination adjustment range of the photovoltaic panel is 0-90 degrees, which is suitable for installation at various latitudes.

[0038] In the embodiment, the front-end information receiving module 21 adopts a DSP chip TMS320F2812 of TI Company, the signal processing circuit 22 adopts a high-impedance operational amplifier CA3140, the master control unit 23 adopts stm32l101, has a high-performance ARM Cortex-M3 32-bit RISC core, a working frequency of 36MHz, a built-in high-speed memory, a flash memory of up to 128K bytes and a SRAM of 16K bytes, rich enhanced peripherals and I / O ports are connected to two APB buses, the chip internally contains a 12-bit ADC and three general 16-bit timers, also contains a standard communication interface: two I2C, two SPI and three USART, can work in a temperature range of -40 DEG C to +85 DEG C, a working voltage of 2.0V to 3.6V, the terminal power supply 24 is a power supply chip AMS1117, directly supplies the power supply chip with an external power supply of 5V, namely, outputs power supply voltages of 3.3V and 1.8V, the 4G communication module 25 adopts a ME3630 series wireless communication module 199, can provide a large 50Mbps uplink rate and 150Mbps downlink rate, and supports falling back to a 3G or 2G network, supports various network protocols (PAP, CHAP, PPP) and various functions (GNSS, Remote wakeup, MMS, SMS, etc.).

[0039] The above is only the preferred embodiment of the utility model, but the protection scope of the utility model is not limited to this. The substitution can be the substitution of part structure, device, method step, and also can be complete technical scheme. According to the technical scheme of the utility model and the utility model concept, equivalent substitution or change should be covered in the protection scope of the utility model.

Claims

1. A discharge data teletransmission type overvoltage lightning protection device, characterized by, The utility model relates to a kind of lightning protection device state monitoring system, including pole device, data acquisition transmission terminal, data management center;The pole device includes overvoltage lightning protection device, and state monitoring module is installed on the ground wire of overvoltage lightning protection device, the state monitoring module is used to collect the discharge times, discharge time and leakage current information of overvoltage lightning protection device, and the information collected is stored in internal memory chip, and information is sent to data acquisition transmission terminal by wireless communication module;Various information data generated by state monitoring module is transmitted to data management center by 4G communication by data acquisition transmission terminal.

2. The overvoltage lightning protection device of claim 1, wherein, The state monitoring module includes current sensor, impact signal processing circuit, leakage current processing circuit, sensitivity adjustment circuit, main control chip, time module, memory chip, power module and wireless communication module;The current sensor adopts inductive to collect the discharge times, discharge time and leakage current information of voltage lightning protection device, and the information collected is transmitted to impact signal processing circuit and leakage current processing circuit connected with impact signal processing circuit in parallel, and the information processed by impact signal processing circuit and leakage current processing circuit is transmitted to main control chip, and main control chip stores the information received in memory chip, and time module provides time information for main control chip, and wireless communication module sends the information required to be sent by main control chip to data acquisition transmission terminal.

3. The overvoltage lightning protection device of claim 2, wherein the discharge data remote transmission type overvoltage lightning protection device further comprises a voltage sensor, a current sensor, a voltage / current converter, a data acquisition module, a data transmission module, and a data processing module. The impact signal processing circuit divides impact signal into three levels below 1kA, 1kA~5kA and above 5kA.

4. The overvoltage lightning protection device of claim 2, wherein the discharge data remote transmission type overvoltage lightning protection device further comprises a voltage sensor for sensing a voltage of the power line and a current sensor for sensing a current of the power line. The leakage current processing circuit collects leakage current in two modes, mode one is to collect leakage current value periodically, and mode two is to take leakage current value after 1 cycle after lightning discharge.

5. The overvoltage lightning protection device of claim 2, wherein the discharge data remote transmission type overvoltage lightning protection device further comprises a voltage sensor for sensing a voltage of the power line and a current sensor for sensing a current of the power line. The memory chip only retains the leakage current data of the last 5 times, and each new data replaces the earliest data.

6. The overvoltage lightning protection device of claim 2, wherein the discharge data remote transmission type overvoltage lightning protection device further comprises a voltage sensor for sensing a voltage of the power line and a current sensor for sensing a current of the power line. Sensitivity adjustment circuit is arranged between the leakage current processing circuit and the main control chip, and the sensitivity adjustment circuit is used to adjust the detection starting value of leakage current.

7. The overvoltage lightning protection device of claim 2, wherein the discharge data remote transmission type overvoltage lightning protection device further comprises a voltage sensor for sensing a voltage of the power line and a current sensor for sensing a current of the power line. After the main control chip receives the information transmitted by impact signal processing circuit or leakage current, time information is obtained from time module simultaneously.

8. The overvoltage lightning protection device of claim 1, wherein the overvoltage lightning protection device is a discharge data remote transmission type overvoltage lightning protection device. The data acquisition transmission terminal includes front-end information receiving module, signal conditioning circuit, main control unit, terminal power module, 4G communication module, the main control unit is embedded with high-speed memory, the information receiving module performs data communication task with multiple sensors simultaneously, and the received information is transmitted to the main control unit, the signal conditioning circuit amplifies and filters the signals transmitted by various sensors and then transmits them to the main control unit, and the 4G communication module transmits the information processed by the main control unit to the data management center.

9. The overvoltage lightning protection device of claim 8, wherein the discharge data remote transmission type overvoltage lightning protection device further comprises a voltage sensor for sensing a voltage of the power line and a current sensor for sensing a current of the power line. The terminal power module collects solar energy through photovoltaic panels and stores it in internal batteries to power the data acquisition transmission terminal.

10. The overvoltage lightning protection device of claim 1, wherein the overvoltage lightning protection device is a discharge data remote transmission type overvoltage lightning protection device. The overvoltage lightning protection device comprises a current diversion device fixed on a wire, a high-voltage fully-insulated flexible cable with one end connected to the current diversion device, a discharge gap plate connected to the free end of the high-voltage fully-insulated flexible cable, a supporting insulator with one end connected to the discharge gap plate, and a mounting rack connected to the free end of the supporting insulator, wherein the mounting rack is fixed on a pole, the discharge gap plate is provided with an upper discharge electrode on the side away from the supporting insulator, the mounting rack is provided with a power frequency current limiter below the upper discharge electrode, and the power frequency current limiter is provided with a lower discharge electrode close to one end of the upper discharge electrode.

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