CN110824399B - Remote online monitoring system and method for lightning arrester discharge counter - Google Patents
Remote online monitoring system and method for lightning arrester discharge counter Download PDFInfo
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- CN110824399B CN110824399B CN201910887214.8A CN201910887214A CN110824399B CN 110824399 B CN110824399 B CN 110824399B CN 201910887214 A CN201910887214 A CN 201910887214A CN 110824399 B CN110824399 B CN 110824399B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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Abstract
The invention relates to the technical field of power equipment, in particular to a remote online monitoring system and a method for a lightning arrester discharge counter, which comprises a detection terminal, a data acquisition box and a server, wherein the detection terminal comprises a shell, an embedded microcomputer, a wireless communication module and a connecting wire, the embedded microcomputer is connected with the lightning arrester discharge counter through the connecting wire, the embedded microcomputer is connected with the wireless communication module, and the three detection terminals are respectively connected with the three-phase lightning arrester discharge counters; the data acquisition box comprises a box body of the data acquisition box, a controller, a memory, a wireless communication module and a positioning module, wherein the memory, the wireless communication module and the positioning module are all connected with the controller, and the data acquisition box is in communication connection with a server. The substantial effects of the invention are as follows: the lightning arrester discharge counter is monitored through the detection terminal, the reading of the lightning arrester discharge counter is uploaded to the server through the data acquisition box, the remote reading of the lightning arrester discharge counter can be achieved, and the lightning arrester is convenient to monitor.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a remote online monitoring system and method for a lightning arrester discharge counter.
Background
An arrester is an apparatus for protecting the insulation of an ac power transmission and transformation apparatus. The power equipment can be protected from lightning overvoltage and operation overvoltage. The overvoltage protection circuit is used for overvoltage protection of power equipment such as transformers, transmission lines, distribution panels, switch cabinets, power metering boxes, vacuum switches, parallel compensation capacitors, rotating motors, semiconductor devices and the like in power lines. The lightning arrester utilizes the nonlinear volt-ampere characteristic of the nonlinear resistor, so that the current flowing through the lightning arrester is extremely small at normal working voltage, usually in the microampere or milliamp level; when overvoltage acts, namely lightning strike or overvoltage surge impact, the resistance value of the nonlinear resistor is sharply reduced, and the energy of the overvoltage is discharged, so that the effect of protecting the circuit and equipment in the circuit is achieved. In the power supply line through the mountain area, the popularization and use of the arrester has played a huge role for reducing the breaker action that mountain area circuit thunderbolt overvoltage arouses, nevertheless because mountain area circuit ground is far away to the arrester monitor, leakage appearance and counter all install the shaft tower eminence promptly, and the arrester parameter is checked meter and is overhauld the work degree of difficulty greatly. And the leakage detector and the counter can be aged and broken down when in use, and the lightning arrester monitor cannot work normally only by once inspection every year. Therefore, it is necessary to develop a system capable of remotely monitoring the discharge times of the lightning arrester on line.
For example, chinese patent CN1808640B, published 2011, 7, month, 20, discloses a monitor for online monitoring of working state of a lightning arrester, which includes a housing with a panel, a double-pointer counting device, a leakage current monitoring and alarming device, a mechanism for displaying working state, a monitoring and displaying circuit thereof, and a high-voltage outlet terminal. The device adopts a double-pointer counting device with a closed magnetic field loop for counting, is additionally provided with a protection circuit and a relay for displaying a working state, and is additionally provided with an ammeter and an alarm light-emitting diode at two ends. Although the counting range of the arrester discharge counter is expanded, the technical problem that the reading of the arrester discharge counter is difficult cannot be solved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the current lightning arrester discharge counter has the technical problems of difficult reading and unreliable work. A remote online monitoring system and method for a lightning arrester discharge counter with reading convenient online monitoring are provided. The invention can find the fault of the arrester discharge counter in time and improve the working reliability of the arrester discharge counter.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a remote online monitoring system for a lightning arrester discharge counter comprises a detection terminal, a data acquisition box and a server, wherein the detection terminal comprises a shell, an embedded microcomputer, a wireless communication module and a connecting wire, the embedded microcomputer and the wireless communication module are both installed in the shell, the embedded microcomputer is connected with the lightning arrester discharge counter through the connecting wire, the embedded microcomputer is connected with the wireless communication module, and the three detection terminals are respectively connected with the three-phase lightning arrester discharge counter; the data acquisition box comprises a box body, a controller, a memory, a wireless communication module and a positioning module, wherein the controller, the memory, the wireless communication module and the positioning module are all installed in the box body, the memory, the wireless communication module and the positioning module are all connected with the controller, and the data acquisition box is in communication connection with a server. The lightning arrester discharge counter is monitored through the detection terminal, the reading of the lightning arrester discharge counter is uploaded to the server through the data acquisition box, the remote reading of the lightning arrester discharge counter can be achieved, and the lightning arrester is convenient to monitor.
Preferably, the detection terminal and the data acquisition box are both provided with power supply modules, each power supply module comprises a storage battery BT1, a photovoltaic panel and a charging circuit, the photovoltaic panel is connected with the storage battery BT1 through the charging circuit, the charging circuit detects the voltage at two ends of the storage battery BT1, and the charging circuit is connected with the embedded microcomputer. Can be for detection terminal and data acquisition box power supply through the photovoltaic board, prolong detection terminal and data acquisition box's operating time length, reduce the maintenance number of times.
Preferably, the charging circuit comprises a photovoltaic panel interface J1, a three-terminal regulator U1, a diode D1, a resistor R1, a transistor VT1 and a chip U1, wherein the photovoltaic panel interface J1 is connected with the photovoltaic panel, the positive electrode of the photovoltaic panel interface J1 is connected with the input end of the three-terminal regulator U1, the output end of the three-terminal regulator U1 is connected with the anode of the diode D1, the cathode of the diode D1 is connected with the collector of the transistor VT1 and one end of the resistor R1, the emitter of the transistor VT1 is connected with one end of the resistor R1 and the positive electrode of the storage battery BT1, the negative electrode of the storage battery BT1 is grounded, the other end of the resistor R1 is connected with one end of the resistor R1 and the collector of the transistor VT1, the other end of the resistor R1 is grounded, one end of the resistor R1 is connected with the positive electrode of the photovoltaic panel interface J1 and the emitter of the transistor VT 72, the base of the transistor VT1 and the transistor VT1 are connected with the chip VT1, the other end of the resistor R6 is connected with one end of the resistor R5 and the chip U2, and the other end of the resistor R5 is grounded.
The working principle of the preferred scheme is as follows: when the photovoltaic panel outputs power, the triode VT1 is conducted, the photovoltaic panel supplies power to other modules through the three-terminal voltage regulator tube U1 and charges the storage battery BT1, when the photovoltaic panel does not output power, the triode VT1 is cut off, the triode VT2 is conducted, and the storage battery BT1 supplies power to other modules through the triode VT2 and the three-terminal voltage regulator tube U1.
Preferably, the monitoring terminal and the data acquisition box are respectively provided with an environment monitoring device, and the environment monitoring devices are connected with an embedded microcomputer or a controller; the environment monitoring device comprises a humidity detection device and a vibration sensor, the humidity detection device detects the air humidity in the shell or the box body, the vibration sensor is installed on the inner wall of the shell or the box body and clings to the inner wall of the shell or the box body, and the vibration sensor detects the vibration of the inner wall of the shell or the box body. Through monitoring the air humidity in casing or the box, can in time discover casing damage or box damage's test terminal or data acquisition case, in time deal with, improve test terminal and data acquisition case's operational reliability. Through monitoring casing or box vibration, record vibration amplitude and the emergence time that vibration amplitude surpassed the settlement threshold value, compare with the record of arrester counter that discharges, if the arrester does not appear when casing or box appear vibrating and discharges, then judge that casing or box suffer external force striking, probably damage, need the on-the-spot investigation, in time deal with the problem, improve the operational reliability of test terminal and data acquisition box.
Preferably, the lightning arrester discharge counter further comprises a verification module, the lightning arrester discharge counter comprises a lightning arrester, a nonlinear resistor R1, a nonlinear resistor R2, a high-voltage capacitor C and a pointer action coil L, one end of the lightning arrester is connected with a phase line, the other end of the lightning arrester is connected with one ends of the nonlinear resistor R1 and the nonlinear resistor R2, the other end of the nonlinear resistor R1 is grounded, the other end of the nonlinear resistor R2 is connected with one ends of the high-voltage capacitor C and the pointer action coil L, the other ends of the high-voltage capacitor C and the pointer action coil L are both grounded, the verification module is connected with the nonlinear resistor R1 in parallel, and the verification module is connected with the MCU through a connecting wire; the calibration module comprises a spring, a sliding ring, a sliding needle and a displacement sensor, the sliding ring is connected at the joint of the nonlinear resistor R1 and the nonlinear resistor R2, the sliding ring is fixed in the shell, the sliding needle is sleeved in the sliding ring, the outer wall of the sliding needle is abutted to the inner wall of the sliding ring, one end of the spring is connected with the sliding needle, the other end of the spring is fixedly connected with the shell and grounded, the displacement sensor is installed in the shell and detects the displacement of the sliding needle, and the displacement sensor is connected with the MCU. The lightning arrester and the nonlinear resistor R1 have larger resistance values under normal voltage, which is equivalent to insulation, when lightning strike occurs, the lightning arrester, the nonlinear resistor R1 and the nonlinear resistor R2 are all conducted, overvoltage current is led into the ground, partial current flows into the high-voltage capacitor C, after the lightning strike occurs, the lightning arrester, the nonlinear resistor R1 and the nonlinear resistor R2 all recover a high-resistance state, which is equivalent to insulation, electric energy stored in the high-voltage capacitor C is discharged through a pointer action coil L to drive a pointer to act, meanwhile, a P2 point can monitor high voltage, the high voltage is connected with an MCU through a voltage division unit, the action of the counter can be synchronously monitored by monitoring the voltage through the MCU, and synchronous counting with the counter can be realized as long as initial values are aligned. The verification module is capable of verifying the count by coupling with a non-linear resistor R1. When current passes through the spring, the spring shrinks a little, the small shrinkage can be detected through the displacement sensor, when lightning stroke does not occur, milliampere-level leakage current exists in the lightning arrester, the nonlinear resistor R1 is in a high-resistance state, the leakage current almost completely passes through the spring, at the moment, the shrinkage of the spring is small, and the displacement of the sliding needle is small; when the arrester breaks down the electric leakage current increase, the spring shrinkage increases, and the slide bar displacement volume increase just can assist the judgement arrester through being located the sensor and whether appear thunder and lightning trouble. When lightning strike occurs, the spring is equivalent to an inductor, the current of the inductor cannot be transient, the increase of the current flowing through the spring in the lightning strike process is limited, but the spring still has larger shrinkage, the displacement change can be detected by the sensor, namely, under normal lightning strike, the voltage rise can occur at the far end of the pointer action coil L, the displacement of the sliding needle can be detected by the sensor to be obviously increased, if only one of the displacement and the displacement is detected, the lightning arrester or the lightning arrester discharge counter has faults, and the online monitoring of the lightning arrester and the lightning arrester discharge counter is realized.
Preferably, the calibration module further comprises a magnet, a magnetic ring fixing member and a magnetic ring adjusting nut, the magnet is annular and is fixedly connected with the sliding needle, the magnetic ring is mounted on the magnetic ring fixing member and located below the magnet, the magnetic ring and the magnet attract each other, the magnetic ring fixing member is clamped with the shell, the magnetic ring adjusting nut is rotatably clamped with the shell, and the magnetic ring adjusting nut is fixedly connected with the magnetic ring through a thread pair. When the detection terminal is installed, the sliding needle is arranged right above the spring, the spring is compressed by the gravity of the sliding needle, the magnetic ring attracts the magnet, the compression amount of the spring is reduced, the spring has a pre-compression amount by the gravity of the sliding needle and the attraction of the magnetic ring magnet, the sliding needle is at an initial position at the moment, when the detection terminal is installed at a certain inclination, the gravity of the sliding needle does not completely act on the spring, the magnetic ring is adjusted at the moment, the magnetic ring is far away from the magnet, the attraction of the magnetic ring magnet is reduced, the sliding needle returns to the initial position again, when current passes through the spring, the spring contracts, the magnet is far away from the magnetic ring, the attraction of the magnetic ring of the magnet is weakened, the contraction amount of the spring is increased, namely the magnetic ring of the magnet can amplify the spring contraction amount caused by the current, and the capacity of detecting weak current is improved.
Preferably, the displacement sensor comprises a laser emitter, a reflection wafer and a light receiver, the laser emitter and the light receiver are both arranged in the shell, the reflection wafer is arranged at the end part of the sliding needle, the diameter of the reflection wafer is equal to the diameter of a light spot of light emitted by the laser generator, and the light receiver is connected with the MCU. When the sliding needle is located at the initial position, the light spot of the emergent light of the laser emitter irradiates the reflection wafer and is totally reflected to the light receiver, when the sliding needle is displaced, the light spot of the emergent light of the laser emitter is partially moved out of the reflection wafer, so that the light intensity received by the light receiver is reduced, when the light intensity received by the light receiver is reduced to exceed a set threshold value, the current passing through the spring is considered to exceed the set threshold value, and electric leakage early warning is sent out or the lightning stroke auxiliary judgment is sent out.
A remote online monitoring method for an arrester discharge counter is suitable for the remote online monitoring system for the arrester discharge counter, and comprises the following steps: A) initializing the system: establishing communication connection between the data acquisition box and a server, and setting a lightning stroke frequency alarm threshold value; B) establishing a data acquisition box record: enumerating a data acquisition box which is in communication connection with the server, and inputting data acquisition box information, wherein the data of the data acquisition box comprises the position of the data acquisition box, corresponding line information and a reading of a detection terminal connected with the data acquisition box; C) periodic synchronization update data: the data acquisition box periodically reports the acquired lightning arrester discharge counter reading; D) automatic monitoring and alarming: and when the reading of the lightning arrester discharge counter reported by the data acquisition box exceeds the lightning stroke frequency alarm threshold value, giving an alarm.
Preferably, the method further comprises the step E) of lightning arrester leakage alarming: the method comprises the steps that a sensor reading alarm threshold value is set, a data acquisition box simultaneously collects the readings of the displacement sensors acquired by a detection terminal connected with the data acquisition box, if the readings of the displacement sensors exceed the set threshold value, whether lightning strikes occur in T time periods before and after the moment when the readings of the displacement sensors occur is judged, and if the lightning strikes do not occur, an arrester electric leakage alarm is sent out. When the lightning stroke frequency exceeds a set threshold value, an alarm is sent out, and after dispatched personnel check the circuit, the problems in the circuit can be timely solved, so that the stability and the reliability of the power grid are improved.
Preferably, in step a), the lightning stroke number alarm threshold includes a single-day lightning stroke number alarm threshold and a weekly lightning stroke number alarm threshold.
Preferably, a user management system is arranged in the server, identification information corresponding to the user is stored in the data acquisition box, the user firstly logs in the user management system before the step A) is executed, in the step A), the data acquisition box and the server establish communication connection and report the stored user identification information, the server establishes an index of the data acquisition box of the same user according to the user identification information, and establishes a data acquisition box record in the step B) according to the index.
The substantial effects of the invention are as follows: the reading of the arrester discharge counter is monitored through the detection terminal and then uploaded to the server through the data acquisition box, so that the remote reading of the arrester discharge counter can be realized, and the monitoring of the arrester is facilitated; when the lightning stroke frequency exceeds a set threshold value, an alarm is sent out, and after dispatched personnel check the circuit, problems in the circuit can be timely eliminated, so that the stability and reliability of the power grid are improved; the photovoltaic panel can supply power to the detection terminal and the data acquisition box, so that the working time of the detection terminal and the data acquisition box is prolonged, and the maintenance times are reduced; whether the lightning arrester discharge counter breaks down or not and whether the leakage current of the lightning arrester exceeds the limit or not are judged in an auxiliary mode through the checking module, and the working reliability of the lightning arrester is improved.
Drawings
Fig. 1 is a schematic structural diagram of a remote monitoring system according to an embodiment.
Fig. 2 is a schematic view of monitoring a lightning arrester according to an embodiment.
Fig. 3 is a schematic structural diagram of a verification module according to an embodiment.
FIG. 4 is an original diagram of a charging circuit according to an embodiment.
FIG. 5 is a flowchart illustrating a remote online monitoring method according to an embodiment.
Wherein: 1. the lightning arrester comprises a lightning arrester discharge counter, 2, a connecting wire, 3, a wireless communication antenna, 4, a detection terminal, 5, a photovoltaic panel, 6, a GSM communication antenna, 7, a positioning module, 8, a data acquisition box, 9, a verification module, 10, a lightning arrester, 11, a laser transmitter, 12, a reflection wafer, 13, a magnet, 14, a magnetic ring, 15, a magnetic ring fixing piece, 16, a magnetic ring adjusting nut, 17, a sliding ring, 18, a sliding needle, 19, a spring, 20 and a light receiver.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
The first embodiment is as follows:
a remote online monitoring system for a lightning arrester discharge counter 1 is disclosed, as shown in figure 1, the system comprises a detection terminal 4, a data acquisition box 8 and a server, wherein the detection terminal 4 comprises a shell, an embedded microcomputer, a wireless communication module and a connecting wire 2, the embedded microcomputer and the wireless communication module are both arranged in the shell, the wireless communication module comprises a wireless communication unit and a wireless communication antenna 3, the wireless communication antenna 3 is arranged on the outer side of the shell, the embedded microcomputer is connected with the lightning arrester discharge counter 1 through the connecting wire 2, the embedded microcomputer is connected with the wireless communication unit, and the detection terminal 4 is provided with three parts which are respectively connected with the three-phase lightning arrester discharge counter 1; the data acquisition box 8 comprises a box body, a controller, a memory, a wireless communication module and a positioning module 7, wherein the controller, the memory, the wireless communication module and the positioning module 7 are all installed in the box body, the memory, the wireless communication module and the positioning module 7 are all connected with the controller, a GSM communication unit is arranged in the data acquisition box 8, a GSM communication antenna 6 is installed on the outer side of the box body of the data acquisition box 8, and the data acquisition box 8 is in communication connection with a server through the GSM communication unit. The lightning arrester discharge counter 1 is monitored through the detection terminal 4, the reading is uploaded to the server through the data acquisition box 8, the remote reading of the lightning arrester discharge counter 1 can be achieved, and the lightning arrester 10 is convenient to monitor.
The detection terminal 4 and the data acquisition box 8 are both provided with a power supply module, the power supply module comprises a storage battery BT1, a photovoltaic panel 5 and a charging circuit, the photovoltaic panel 5 is connected with the storage battery BT1 through the charging circuit, the charging circuit detects the voltage at two ends of the storage battery BT1, and the charging circuit is connected with the embedded microcomputer. Can be for detection terminal 4 and data acquisition box 8 power supply through photovoltaic board 5, prolong detection terminal 4 and data acquisition box 8's operating time length, reduce the maintenance number of times. As shown in fig. 4, the charging circuit includes a photovoltaic panel 5 interface J1, a three-terminal regulator U1, a diode D1, a resistor R1, a transistor VT1 and a chip U1, the photovoltaic panel 5 interface J1 is connected to the photovoltaic panel 5, the positive electrode of the photovoltaic panel 5 interface J1 is connected to the input terminal of the three-terminal regulator U1, the output terminal of the three-terminal regulator U1 is connected to the positive electrode of the diode D1, the cathode of the diode D1 is connected to the collector of the transistor VT1 and one end of the resistor R1, the emitter of the transistor VT1 is connected to one end of the resistor R1 and the positive electrode of the battery BT1, the negative electrode of the battery BT1 is grounded, the other end of the resistor R1 is connected to one end of the resistor R1 and the collector of the transistor VT1, the other end of the resistor R1 is connected to the emitter of the photovoltaic panel 5 interface J1 and the transistor VT1, the base of the transistor VT1, the other end of the resistor R6 is connected with one end of the resistor R5 and the chip U2, and the other end of the resistor R5 is grounded. When the photovoltaic panel 5 outputs power, the triode VT1 is conducted, the photovoltaic panel 5 supplies power to other modules through the three-terminal voltage regulator tube U1 and charges the storage battery BT1, when the photovoltaic panel 5 does not output power, the triode VT1 is cut off, the triode VT2 is conducted, and the storage battery BT1 supplies power to other modules through the triode VT2 and the three-terminal voltage regulator tube U1.
The monitoring terminal and the data acquisition box 8 are respectively provided with an environment monitoring device, and the environment monitoring device is connected with an embedded microcomputer or a controller; the environment monitoring device comprises a humidity detection device and a vibration sensor, the humidity detection device detects the air humidity in the shell or the box body, the vibration sensor is installed on the inner wall of the shell or the box body and clings to the inner wall of the shell or the box body, and the vibration sensor detects the vibration of the inner wall of the shell or the box body. Through monitoring the air humidity in casing or the box, can in time discover casing damage or box damage's detection terminal 4 or data acquisition case 8, in time deal with, improve detection terminal 4 and data acquisition case 8's operational reliability. Through monitoring casing or box vibration, record vibration amplitude and the emergence time that vibration amplitude surpassed the settlement threshold value, compare with the record of arrester discharge counter 1, if the arrester 10 discharge does not appear when casing or box appear vibrating, then judge that casing or box suffer external force striking, probably damage, need the on-the-spot investigation, in time deal with the problem, improve the operational reliability of detection terminal 4 and data acquisition box 8.
As shown in fig. 2, the arrester discharge counter 1 includes an arrester 10, a non-linear resistor R1, a non-linear resistor R2, a high-voltage capacitor C and a pointer action coil L, one end of the arrester 10 is connected to a phase line, the other end of the arrester 10 is connected to one ends of the non-linear resistor R1 and the non-linear resistor R2, the other end of the non-linear resistor R1 is grounded, the other end of the non-linear resistor R2 is connected to one ends of the high-voltage capacitor C and the pointer action coil L, the other ends of the high-voltage capacitor C and the pointer action coil L are grounded, a verification module 9 is connected in parallel to the non-linear resistor R1, and the verification module 9 is connected to the MCU through a connection line 2.
As shown in fig. 3, the verification module includes a spring 19, a slip ring 17, a slip pin 18, a magnet 13, the magnetic ring type displacement sensor comprises a magnetic ring 14, a magnetic ring fixing piece 15, a magnetic ring adjusting nut 16 and a displacement sensor, wherein the sliding ring 17 is connected at the joint of a nonlinear resistor R1 and a nonlinear resistor R2, the sliding ring 17 is fixed in a shell, a sliding needle 18 is sleeved in the sliding ring 17, the outer wall of the sliding needle 18 is abutted to the inner wall of the sliding ring 17, one end of a spring 19 is connected with the sliding needle 18, the other end of the spring 19 is fixedly connected with the shell and grounded, the displacement sensor is installed in the shell and detects the displacement of the sliding needle 18, the displacement sensor is connected with an MCU (microprogrammed control unit), a magnet 13 is annular and is fixedly connected with the sliding needle 18, the magnetic ring 14 is installed on the magnetic ring fixing piece 15 and is located below the magnet 13, the magnetic ring 14 and the magnet 13 attract each other, the magnetic ring fixing piece 15 is clamped with the shell, the magnetic ring adjusting nut 16 is rotatably clamped with the shell, and the magnetic ring adjusting nut 16 is fixedly connected with the magnetic ring 14 through a thread pair.
The lightning arrester 10 and the nonlinear resistor R1 have large resistance values under normal voltage, which is equivalent to insulation, when a lightning strike occurs, the lightning arrester 10, the nonlinear resistor R1 and the nonlinear resistor R2 are all turned on, overvoltage current is led into the ground, part of the current flows into the high-voltage capacitor C, after the lightning strike occurs, the lightning arrester 10, the nonlinear resistor R1 and the nonlinear resistor R2 all recover a high-resistance state, which is equivalent to insulation, electric energy stored in the high-voltage capacitor C is discharged through the pointer action coil L to drive a pointer to act, meanwhile, a P2 point can monitor high voltage, the voltage is connected with the MCU through the voltage division unit, the action of the counter can be synchronously monitored by monitoring the voltage through the MCU, and synchronous counting with the counter can be realized as long as initial values are aligned. The verification module 9 is able to verify the count by coupling with a non-linear resistor R1. When current passes through the spring 19, the spring 19 will shrink a little, the small shrinkage can be detected by the displacement sensor, and when lightning strike does not occur, milliampere-level leakage current exists in the lightning arrester 10, the nonlinear resistor R1 is in a high-resistance state, the leakage current almost completely passes through the spring 19, at this time, the shrinkage of the spring 19 is small, and the displacement of the sliding pin 18 is small; when the lightning arrester 10 has a fault and the leakage current increases, the contraction amount of the spring 19 increases, the displacement amount of the sliding needle 18 increases, and the lightning arrester 10 can be assisted to judge whether the lightning arrester 10 has a lightning fault or not by being located at the sensor. When lightning strikes occur, the spring 19 is equivalent to an inductor, the current of the inductor cannot be transient, the increase of the current flowing through the spring 19 in the lightning strike process is limited, but still the spring 19 has a larger shrinkage, the displacement change can be detected by the sensor, namely, under normal lightning strikes, the voltage increase of the far-end of the pointer action coil L can occur, the displacement of the sliding rod 18 can be detected by the sensor to be obviously increased, if only one of the displacement and the displacement is detected, the lightning arrester 10 or the lightning arrester discharge counter 1 has faults, and the online monitoring of the lightning arrester 10 and the lightning arrester discharge counter 1 is realized.
When the detection terminal 4 is installed, the sliding needle 18 is arranged right above the spring 19, the sliding needle 18 compresses the spring 19 by gravity, at the same time, the magnetic ring 14 attracts the magnet 13, so that the compression amount of the spring 19 is reduced, the gravity of the slide pin 18 and the attraction force of the magnet 13 of the magnetic ring 14 jointly make the spring 19 have a pre-compression amount, and the position of the slide pin 18 is the initial position, when the detection terminal 4 is installed at a certain inclination, the gravity of the sliding pin 18 does not act on the spring 19 completely, and the magnetic ring 14 is adjusted to make the magnetic ring 14 far away from the magnet 13, the attractive force of the magnet 13 of the magnetic ring 14 is reduced, the sliding pin 18 is returned to the initial position, when there is current passing through spring 19, spring 19 contracts, causing magnet 13 to move away from magnetic ring 14, the attractive force of magnet 13 and magnetic ring 14 is weakened, causing the amount of spring 19 contraction to increase, that is, the magnet ring 14 of the magnet 13 can amplify the amount of contraction of the spring 19 caused by the current, thereby improving the ability of detecting a weak current.
The displacement sensor comprises a laser emitter 11, a reflection wafer 12 and a light receiver 20, wherein the laser emitter and the light receiver 20 are all installed in a shell, the reflection wafer 12 is installed at the end part of a sliding needle 18, the diameter of the reflection wafer 12 is equal to the diameter of a light spot of emergent light of the laser generator, and the light receiver 20 is connected with the MCU. When the sliding pin 18 is located at the initial position, the light spot of the emergent light of the laser emitter 11 irradiates the reflection wafer 12 and is totally reflected to the light receiver 20, when the sliding pin 18 is displaced, the light spot of the emergent light of the laser emitter 11 partially moves out of the reflection wafer 12, so that the light intensity received by the light receiver 20 is reduced, and when the light intensity received by the light receiver 20 is reduced and exceeds a set threshold value, the current passing through the spring 19 is considered to exceed the set threshold value, and electric leakage early warning is sent out or the lightning stroke auxiliary judgment is sent out.
A method for remotely monitoring an arrester discharge counter 1 on line is applicable to the above-mentioned system for remotely monitoring an arrester discharge counter 1 on line, as shown in fig. 5, and includes the following steps: A) initializing the system: the server is internally provided with a user management system, the data acquisition box 8 is internally stored with identification information corresponding to a user, the user firstly logs in the user management system, the data acquisition box 8 and the server are in communication connection, the stored user identification information is reported, the server establishes an index of the data acquisition box 8 of the same user according to the user identification information, and sets a lightning stroke frequency alarm threshold, wherein the lightning stroke frequency alarm threshold comprises a single-day lightning stroke frequency alarm threshold and a week lightning stroke frequency alarm threshold.
B) Establishing a data acquisition box 8 record: enumerating the data acquisition box 8 which is in communication connection with the server, and inputting information of the data acquisition box 8, wherein the data of the data acquisition box 8 comprises the position of the data acquisition box 8, corresponding line information and the reading of the detection terminal 4 connected with the data acquisition box 8.
C) Periodic synchronization update data: and the data acquisition box 8 periodically reports the acquired reading of the lightning arrester discharge counter 1.
D) Automatic monitoring and alarming: and when the reading of the lightning arrester discharge counter 1 reported by the data acquisition box 8 exceeds the lightning stroke frequency alarm threshold value, an alarm is given out.
E) The lightning arrester 10 leaks electricity and reports to the police: and setting a reading alarm threshold value of the displacement sensor, simultaneously collecting the reading of the displacement sensor collected by the detection terminal 4 connected with the data collection box 8, judging whether lightning stroke occurs in the T time period before and after the moment when the reading of the displacement sensor is generated if the reading of the displacement sensor exceeds the set threshold value, and sending out leakage alarm of the lightning arrester 10 if the lightning stroke does not occur. When the lightning stroke frequency exceeds a set threshold value, an alarm is sent out, and after dispatched personnel check the circuit, the problems in the circuit can be timely solved, so that the stability and the reliability of the power grid are improved.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (9)
1. A remote on-line monitoring system for a lightning arrester discharge counter is characterized in that,
the lightning arrester detection system comprises a detection terminal, a data acquisition box and a server, wherein the detection terminal comprises a shell, an embedded microcomputer, a wireless communication module and connecting wires, the embedded microcomputer and the wireless communication module are both arranged in the shell, the embedded microcomputer is connected with a lightning arrester discharge counter through the connecting wires, the embedded microcomputer is connected with the wireless communication module, and the three detection terminals are respectively connected with three-phase lightning arrester discharge counters;
the data acquisition box comprises a box body, a controller, a memory, a wireless communication module and a positioning module, wherein the controller, the memory, the wireless communication module and the positioning module are all arranged in the box body, the memory, the wireless communication module and the positioning module are all connected with the controller, and the data acquisition box is in communication connection with a server;
the lightning arrester discharge counter comprises a lightning arrester, a nonlinear resistor R1, a nonlinear resistor R2, a high-voltage capacitor C and a pointer action coil L, one end of the lightning arrester is connected with a phase line, the other end of the lightning arrester is connected with one ends of the nonlinear resistor R1 and the nonlinear resistor R2, the other end of the nonlinear resistor R1 is grounded, the other end of the nonlinear resistor R2 is connected with one ends of the high-voltage capacitor C and the pointer action coil L, the other ends of the high-voltage capacitor C and the pointer action coil L are grounded, the verification module is connected with the nonlinear resistor R1 in parallel, and the verification module is connected with the MCU through a connecting wire;
the calibration module comprises a spring, a sliding ring, a sliding needle and a displacement sensor, the sliding ring is connected at the joint of the nonlinear resistor R1 and the nonlinear resistor R2, the sliding ring is fixed in the shell, the sliding needle is sleeved in the sliding ring, the outer wall of the sliding needle is abutted to the inner wall of the sliding ring, one end of the spring is connected with the sliding needle, the other end of the spring is fixedly connected with the shell and grounded, the displacement sensor is installed in the shell and detects the displacement of the sliding needle, and the displacement sensor is connected with the MCU.
2. The remote on-line monitoring system of the lightning arrester discharge counter according to claim 1,
the detection terminal and the data acquisition box are provided with power supply modules, each power supply module comprises a storage battery BT1, a photovoltaic panel and a charging circuit, each photovoltaic panel is connected with the corresponding storage battery BT1 through the corresponding charging circuit, the corresponding charging circuit detects the voltage at two ends of each storage battery BT1, and the corresponding charging circuit is connected with the embedded microcomputer.
3. The remote on-line monitoring system of the arrester discharge counter according to claim 1 or 2,
the monitoring terminal and the data acquisition box are respectively provided with an environment monitoring device, and the environment monitoring devices are connected with an embedded microcomputer or a controller;
the environment monitoring device comprises a humidity detection device and a vibration sensor, the humidity detection device detects the air humidity in the shell or the box body, the vibration sensor is installed on the inner wall of the shell or the box body and clings to the inner wall of the shell or the box body, and the vibration sensor detects the vibration of the inner wall of the shell or the box body.
4. The remote on-line monitoring system of the lightning arrester discharge counter according to claim 1,
the calibration module further comprises a magnet, a magnetic ring fixing piece and a magnetic ring adjusting nut, the magnet is annular and is fixedly connected with the sliding needle, the magnetic ring is arranged on the magnetic ring fixing piece and is located below the magnet, the magnetic ring and the magnet attract each other, the magnetic ring fixing piece is clamped with the shell, the magnetic ring adjusting nut is rotatably clamped with the shell, and the magnetic ring adjusting nut is fixedly connected with the magnetic ring through a thread pair.
5. The remote on-line monitoring system of the lightning arrester discharge counter according to claim 4,
the displacement sensor comprises a laser emitter, a reflection wafer and a light receiver, wherein the laser emitter and the light receiver are both arranged in the shell, the reflection wafer is arranged at the end part of the sliding needle, the diameter of the reflection wafer is equal to the diameter of a light spot of emergent light of the laser generator, and the light receiver is connected with the MCU.
6. A remote on-line monitoring method of a lightning arrester discharge counter using the remote on-line monitoring system of a lightning arrester discharge counter according to any one of claims 1 to 5,
the method comprises the following steps:
A) initializing the system: establishing communication connection between the data acquisition box and a server, and setting a lightning stroke frequency alarm threshold value;
B) establishing a data acquisition box record: enumerating a data acquisition box which is in communication connection with the server, and inputting data acquisition box information, wherein the data of the data acquisition box comprises the position of the data acquisition box, corresponding line information and a reading of a detection terminal connected with the data acquisition box;
C) periodic synchronization update data: the data acquisition box periodically reports the acquired lightning arrester discharge counter reading;
D) automatic monitoring and alarming: and when the reading of the lightning arrester discharge counter reported by the data acquisition box exceeds the lightning stroke frequency alarm threshold value, giving an alarm.
7. The remote on-line monitoring method of the arrester discharge counter according to claim 6,
and the method also comprises the step E) of lightning arrester electric leakage alarm: the method comprises the steps that a sensor reading alarm threshold value is set, a data acquisition box simultaneously collects the readings of the displacement sensors acquired by a detection terminal connected with the data acquisition box, if the readings of the displacement sensors exceed the set threshold value, whether lightning strikes occur in T time periods before and after the moment when the readings of the displacement sensors occur is judged, and if the lightning strikes do not occur, an arrester electric leakage alarm is sent out.
8. The remote on-line monitoring method of the arrester discharge counter according to claim 6,
in the step A), the lightning stroke frequency alarm threshold comprises a single-day lightning stroke frequency alarm threshold and a weekly lightning stroke frequency alarm threshold.
9. The remote on-line monitoring method of the arrester discharge counter according to claim 6,
the server is internally provided with a user management system, the data acquisition box stores identification information corresponding to a user, the user firstly logs in the user management system before the step A) is executed, the data acquisition box and the server establish communication connection and report the stored user identification information at the same time in the step A), and the server establishes an index of the data acquisition box of the same user according to the user identification information and establishes a data acquisition box record in the step B) according to the index.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020032006A (en) * | 2000-10-25 | 2002-05-03 | 이종훈 | Counter testing machine of lightning arrester |
| CN101655532A (en) * | 2008-12-16 | 2010-02-24 | 河海大学常州校区 | GPRS-based wireless remote online monitoring system of distributed arrester |
| CN201780328U (en) * | 2010-08-20 | 2011-03-30 | 万征 | On-line monitoring device for wireless transmission lightning arrester |
| CN102435871A (en) * | 2011-09-05 | 2012-05-02 | 上海格蒂电力科技股份有限公司 | On-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization |
| CN204044267U (en) * | 2014-09-10 | 2014-12-24 | 林生得 | A kind of device of power distribution network on-line monitoring lightning arrestor movement |
| CN204613333U (en) * | 2015-05-25 | 2015-09-02 | 国家电网公司 | A kind of arrester detecting device for electric system |
| CN105242128A (en) * | 2015-08-26 | 2016-01-13 | 芜湖市凯鑫避雷器有限责任公司 | Online lightning arrester monitoring system base on fuzzy neural network |
| CN106771772A (en) * | 2017-01-16 | 2017-05-31 | 国网福建省电力有限公司泉州供电公司 | A kind of arrester device for detecting performance with remote interface |
| WO2018075789A1 (en) * | 2016-10-19 | 2018-04-26 | Southern States Llc | Arrester temperature monitor |
| CN207424150U (en) * | 2017-08-24 | 2018-05-29 | 南阳金冠电气有限公司 | A kind of Zinc oxide arrester on-line monitoring system |
-
2019
- 2019-09-19 CN CN201910887214.8A patent/CN110824399B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020032006A (en) * | 2000-10-25 | 2002-05-03 | 이종훈 | Counter testing machine of lightning arrester |
| CN101655532A (en) * | 2008-12-16 | 2010-02-24 | 河海大学常州校区 | GPRS-based wireless remote online monitoring system of distributed arrester |
| CN201780328U (en) * | 2010-08-20 | 2011-03-30 | 万征 | On-line monitoring device for wireless transmission lightning arrester |
| CN102435871A (en) * | 2011-09-05 | 2012-05-02 | 上海格蒂电力科技股份有限公司 | On-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization |
| CN204044267U (en) * | 2014-09-10 | 2014-12-24 | 林生得 | A kind of device of power distribution network on-line monitoring lightning arrestor movement |
| CN204613333U (en) * | 2015-05-25 | 2015-09-02 | 国家电网公司 | A kind of arrester detecting device for electric system |
| CN105242128A (en) * | 2015-08-26 | 2016-01-13 | 芜湖市凯鑫避雷器有限责任公司 | Online lightning arrester monitoring system base on fuzzy neural network |
| WO2018075789A1 (en) * | 2016-10-19 | 2018-04-26 | Southern States Llc | Arrester temperature monitor |
| CN106771772A (en) * | 2017-01-16 | 2017-05-31 | 国网福建省电力有限公司泉州供电公司 | A kind of arrester device for detecting performance with remote interface |
| CN207424150U (en) * | 2017-08-24 | 2018-05-29 | 南阳金冠电气有限公司 | A kind of Zinc oxide arrester on-line monitoring system |
Non-Patent Citations (1)
| Title |
|---|
| 避雷器雷击动作次数远程监测***;袁军 等;《农村电气化》;20101231(第279期);第36-37页 * |
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